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Tesco customers have been left furious after having to wait hours in a virtual queue to secure a Christmas delivery slot. This morning the supermarket released slots for the week starting 21 December - but only to their delivery saver customers who pay a subscription fee.
*Tesco Grocery Christmas Delivery Slots 2018 Las Vegas
*Tesco Grocery Christmas Delivery Slots 2018 Youtube
*Tesco’s Christmas delivery slots open on 20 November at 7am. The retailer warns that slots fill quickly, so advises setting a reminder and booking as soon as possible. Any groceries that aren.
*Tesco has apologised after its website struggled to cope with demand from shoppers trying to book Christmas delivery slots. The supermarket giant had to install an online queue system to help it.
26 November 2018, 15:43 | Updated: 26 November 2018, 17:01
What are the Christmas delivery and collection cut-off dates for 2018? Check major supermarkets Xmas closing times including Tesco, Sainsbury’s, Marks & Spencer, Waitrose and Asda.
Thinking of your Christmas delivery already? Worried you’ll miss the cut off time? Well, many major supermarkets are already allowing customers to book their delivery slots for Christmas 2018.
Here are all the delivery and collection cut-off dates for Tesco, Sainsbury’s, Marks & Spencer, Waitrose and Asda.Sainsbury’s Christmas delivery times
Sainsbury’s will open its delivery slots on Wednesday 28th November, giving customers the opportunity to get everything sorted three weeks ahead of Christmas.
You are able to update your basket until 11pm the date before delivery, however there are no deliveries on the 24th, 25th or 26th December, or the 1st Jan.Tesco’s Christmas delivery times
Online delivery slots will open for the 20th December on the 30th November. However, you’ll have to wait until 4th December if you’re hoping for your goods to arrive on the 24th - and even then there are only selected areas eligible for the service.
The full times are as follows:
For Thursday 20th December 2018 delivery - book on Thursday 30th November
For Friday 21st December 2018 delivery - book on Friday 1st December
For Saturday 22nd December 2018 delivery - book on Saturday 2nd DecemberTesco Grocery Christmas Delivery Slots 2018 Las Vegas
For Sunday 23rd December 2018 delivery - book on Sunday 3rd December
For Monday 24th December 2018 delivery - book on Monday 4 December (specific areas only).
Between the 19th December and 3rd January, same dame delivery is not an option.Marks & Spencer’s Christmas delivery times
Whilst M&S don’t do a delivery service, you are already able to place a click and collect order for M&S already - although the 23rd and 24th December are filling up fast.
The last option to do this is 15th December.Morrisons Christmas delivery times
Morrisons’ Christmas delivery slots are already available to book for delivery between 20th - 24th December.
Delivery Pass customers can also claim up to two free deliveries in this period.
You are able to edit your order once it’s been placed, but the cut off for doing this is 24 hours before the delivery slot.AsdaChristmas delivery times
Delivery and collection slots are already live.
The cut off for Food to Order delivery is December 16th, whilst the collect option stays available until 23rd December.
You are able to amend your orders as many times as you like, providing it’s all confirmed by midnight before your allotted date.
Tesco customers have been left furious after having to wait hours in a virtual queue to secure a Christmas delivery slot.
This morning the supermarket released slots for the week starting 21 December - but only to their delivery saver customers who pay a subscription fee.
But after waking up to log on at 7am, many complained they had still not been given a slot after two-and-a-half hours of waiting.
One person posted on Twitter: ’What an absolute joke. Been a delivery customer for years, have delivery saver.
Almost two and a half hours waiting and still in the queue
Tesco customers have been left furious after having to wait hours in a virtual queue to secure a Christmas delivery slot. This morning the supermarket released slots for the week starting 21 December - but only to their delivery saver customers who pay a subscription fee.
*Tesco Grocery Christmas Delivery Slots 2018 Las Vegas
*Tesco Grocery Christmas Delivery Slots 2018 Youtube
*Tesco’s Christmas delivery slots open on 20 November at 7am. The retailer warns that slots fill quickly, so advises setting a reminder and booking as soon as possible. Any groceries that aren.
*Tesco has apologised after its website struggled to cope with demand from shoppers trying to book Christmas delivery slots. The supermarket giant had to install an online queue system to help it.
26 November 2018, 15:43 | Updated: 26 November 2018, 17:01
What are the Christmas delivery and collection cut-off dates for 2018? Check major supermarkets Xmas closing times including Tesco, Sainsbury’s, Marks & Spencer, Waitrose and Asda.
Thinking of your Christmas delivery already? Worried you’ll miss the cut off time? Well, many major supermarkets are already allowing customers to book their delivery slots for Christmas 2018.
Here are all the delivery and collection cut-off dates for Tesco, Sainsbury’s, Marks & Spencer, Waitrose and Asda.Sainsbury’s Christmas delivery times
Sainsbury’s will open its delivery slots on Wednesday 28th November, giving customers the opportunity to get everything sorted three weeks ahead of Christmas.
You are able to update your basket until 11pm the date before delivery, however there are no deliveries on the 24th, 25th or 26th December, or the 1st Jan.Tesco’s Christmas delivery times
Online delivery slots will open for the 20th December on the 30th November. However, you’ll have to wait until 4th December if you’re hoping for your goods to arrive on the 24th - and even then there are only selected areas eligible for the service.
The full times are as follows:
For Thursday 20th December 2018 delivery - book on Thursday 30th November
For Friday 21st December 2018 delivery - book on Friday 1st December
For Saturday 22nd December 2018 delivery - book on Saturday 2nd DecemberTesco Grocery Christmas Delivery Slots 2018 Las Vegas
For Sunday 23rd December 2018 delivery - book on Sunday 3rd December
For Monday 24th December 2018 delivery - book on Monday 4 December (specific areas only).
Between the 19th December and 3rd January, same dame delivery is not an option.Marks & Spencer’s Christmas delivery times
Whilst M&S don’t do a delivery service, you are already able to place a click and collect order for M&S already - although the 23rd and 24th December are filling up fast.
The last option to do this is 15th December.Morrisons Christmas delivery times
Morrisons’ Christmas delivery slots are already available to book for delivery between 20th - 24th December.
Delivery Pass customers can also claim up to two free deliveries in this period.
You are able to edit your order once it’s been placed, but the cut off for doing this is 24 hours before the delivery slot.AsdaChristmas delivery times
Delivery and collection slots are already live.
The cut off for Food to Order delivery is December 16th, whilst the collect option stays available until 23rd December.
You are able to amend your orders as many times as you like, providing it’s all confirmed by midnight before your allotted date.
Tesco customers have been left furious after having to wait hours in a virtual queue to secure a Christmas delivery slot.
This morning the supermarket released slots for the week starting 21 December - but only to their delivery saver customers who pay a subscription fee.
But after waking up to log on at 7am, many complained they had still not been given a slot after two-and-a-half hours of waiting.
One person posted on Twitter: ’What an absolute joke. Been a delivery customer for years, have delivery saver.
Almost two and a half hours waiting and still in the queue
Egt Slot Penguin Style
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*Egt Slot Penguin Style 2019
*Egt Slot Penguin Style Secrets
We’re heading off to Antarctica with EGT’s unique Penguin Style video pokie, where killer whales, squid and krill are joining some friendly penguins in a party on the ice. Things can heat up with a range of hot bonus features, such as free spins where wins are guaranteed, wild substitutions and the Jackpot Cards progressive round that’s common to all games from EGT.
These cartoon characters land across 20 fixed paylines, making up winnings combinations with 3, 4 or 5 of a kind on adjacent reels running from the left side. The minimum stake is 0.20 and there’s a high limit of 40.00 per spin, although free Penguin Style video pokies can be practiced at many casinos.
Try Penguin Style slot online for free in demo mode with no download and no registration required and read the game’s review before playing for real money. EGT Online Slots / Penguin Style / 35 votes. PLAY Penguin Style FOR REAL MONEY AT: CASINO OF THE YEAR 2020. Double Down Casino. Read casino review. All egt slots Penguin Style Mobile Slot - Available on all mobile devices: iPhone / iPad / Android phone & tablet Penguin Style RTP - The Return to Player for this Slot is 96.08%. Penguin Style Slot. What a lovely winter game and such a fun way to pay tribute to the frosty season. Penguin Style is certainly one of EGT’s better slot games and offers a great deign, with entertaining 3D graphics and animations. We’ve already seen an icy game by this developer before, which also featured a couple of adorable penguins.Playing Penguin Style
There’s ice all over the place in this pokie, even some of the symbols are encased in in, while the playing card symbol look as if they have been carved from colourful blocks of the stuff. Each of the J, Q, K and A will pay out 5x the line bet when stopping on 3 reels of a payline, while 4 of them are worth 20x and a full run of 5 will result in a win of 100x.
EGT’s background in land-based casinos means that there is a strong classic feel to their slots collection, and 40 Super Hot is one of the best examples of this. A pumped-up version of its predecessor 20 Super Hot, this game is a fun ride through the traditional reels of juicy fruits and flaming red 7s.
There’s a cute shrimp that will be worth wins of 10, 25 or 150x, which is the same as a friendly squid, while the penguin and his goldfish symbol, along with the snowboarding penguin, will each return wins of 15, 30 or 200x. The most valuable standard symbol is a killer whale, who instead of eating the penguins, will award punters with prizes worth 230, 50 or 500x the line bet for 3, 4 or 5 across the reels. Any creature that’s part of a win will become animated, in short sequences that look like something from Happy Feet or the Penguins of Madagascar.
A dapper penguin in a top hat is a wild symbol, so he’s able to substitute for others to help complete winlines, and as he’s stacked on any reel that he appears on, this is comparatively easy. It’s also the top valued symbol, paying 50, 200 or 1000x the line bet, but it won’t be able to replace the igloo scatter symbol.
This will only appear on the middle reel, and isn’t worth anything on its own, but the real value comes from the 3 free spins that play out anytime it turns up. Penguin StyleLike PlayPokies:Casino of the year 2020×For all new players at BetWay CasinoSIGN UP NOW!Deposit €250, Get €250 FreeSIGN UP NOW!Free Spins Bonus
While 3 free games isn’t much, there’s some special features that ensure each is a winner. The scatter symbol that triggered them will stay locked in place before expanding to the reel positions on the left and right. If more than 1 scatter was on the middle reel, each expands, potentially filling all of the middle 3 reels. It will then transform into wilds, remaining in place throughout the 3 bonus spins.
Any symbols on reel 1 will therefore be substituted across reels 2, 3 and 4 resulting in a guaranteed win each time, and multiple wins if the scatter has filled entire reels. The free spins can’t be retriggered.Other Features
All EGT pokies share a couple of features, and the one players will encounter all the time is the optional gamble game. In Penguin Style, wins of less than 700 coins can be doubled if a playing card is correctly predicted to be from a red or black suit, and if the gamble pays off, there’s another option to collect it, or try to go again for an even bigger prize. Getting the guess wrong will, of course, mean the gamble is lost, and players lose the triggering win along with anything gained in the gamble round so far.
EGT pokies also share the Jackpot Cards progressive feature, which has 4 levels, Club, Diamond, Heart and Spade, with the current values displayed above the reels. It’s a random feature that can occur after any spin and takes players to a second screen where they will see 12 playing cards, which they start clicking on to reveal the suits.
Once 3 of a kind have been found, the related jackpot is paid out, and if the Spades are found first, then the best prize has been won.Egt Slot Penguin Style 2019The Verdict
Penguins and other polar wildlife seem to be quite a popular theme to be covered by online casino pokie machines. Penguin Style has some cute critters on the reels and some sweet bonus features, notably the free spins with 3 reels having wild symbols on them.Egt Slot Penguin Style Secrets
If there’s any real issues that can be pointed out, it’s the lack of a mobile-optimised version of this game, and while a 0.20 minimum stake isn’t going to break the bank, some players who are on thin ice may not want to bet this much.
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*Egt Slot Penguin Style 2019
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We’re heading off to Antarctica with EGT’s unique Penguin Style video pokie, where killer whales, squid and krill are joining some friendly penguins in a party on the ice. Things can heat up with a range of hot bonus features, such as free spins where wins are guaranteed, wild substitutions and the Jackpot Cards progressive round that’s common to all games from EGT.
These cartoon characters land across 20 fixed paylines, making up winnings combinations with 3, 4 or 5 of a kind on adjacent reels running from the left side. The minimum stake is 0.20 and there’s a high limit of 40.00 per spin, although free Penguin Style video pokies can be practiced at many casinos.
Try Penguin Style slot online for free in demo mode with no download and no registration required and read the game’s review before playing for real money. EGT Online Slots / Penguin Style / 35 votes. PLAY Penguin Style FOR REAL MONEY AT: CASINO OF THE YEAR 2020. Double Down Casino. Read casino review. All egt slots Penguin Style Mobile Slot - Available on all mobile devices: iPhone / iPad / Android phone & tablet Penguin Style RTP - The Return to Player for this Slot is 96.08%. Penguin Style Slot. What a lovely winter game and such a fun way to pay tribute to the frosty season. Penguin Style is certainly one of EGT’s better slot games and offers a great deign, with entertaining 3D graphics and animations. We’ve already seen an icy game by this developer before, which also featured a couple of adorable penguins.Playing Penguin Style
There’s ice all over the place in this pokie, even some of the symbols are encased in in, while the playing card symbol look as if they have been carved from colourful blocks of the stuff. Each of the J, Q, K and A will pay out 5x the line bet when stopping on 3 reels of a payline, while 4 of them are worth 20x and a full run of 5 will result in a win of 100x.
EGT’s background in land-based casinos means that there is a strong classic feel to their slots collection, and 40 Super Hot is one of the best examples of this. A pumped-up version of its predecessor 20 Super Hot, this game is a fun ride through the traditional reels of juicy fruits and flaming red 7s.
There’s a cute shrimp that will be worth wins of 10, 25 or 150x, which is the same as a friendly squid, while the penguin and his goldfish symbol, along with the snowboarding penguin, will each return wins of 15, 30 or 200x. The most valuable standard symbol is a killer whale, who instead of eating the penguins, will award punters with prizes worth 230, 50 or 500x the line bet for 3, 4 or 5 across the reels. Any creature that’s part of a win will become animated, in short sequences that look like something from Happy Feet or the Penguins of Madagascar.
A dapper penguin in a top hat is a wild symbol, so he’s able to substitute for others to help complete winlines, and as he’s stacked on any reel that he appears on, this is comparatively easy. It’s also the top valued symbol, paying 50, 200 or 1000x the line bet, but it won’t be able to replace the igloo scatter symbol.
This will only appear on the middle reel, and isn’t worth anything on its own, but the real value comes from the 3 free spins that play out anytime it turns up. Penguin StyleLike PlayPokies:Casino of the year 2020×For all new players at BetWay CasinoSIGN UP NOW!Deposit €250, Get €250 FreeSIGN UP NOW!Free Spins Bonus
While 3 free games isn’t much, there’s some special features that ensure each is a winner. The scatter symbol that triggered them will stay locked in place before expanding to the reel positions on the left and right. If more than 1 scatter was on the middle reel, each expands, potentially filling all of the middle 3 reels. It will then transform into wilds, remaining in place throughout the 3 bonus spins.
Any symbols on reel 1 will therefore be substituted across reels 2, 3 and 4 resulting in a guaranteed win each time, and multiple wins if the scatter has filled entire reels. The free spins can’t be retriggered.Other Features
All EGT pokies share a couple of features, and the one players will encounter all the time is the optional gamble game. In Penguin Style, wins of less than 700 coins can be doubled if a playing card is correctly predicted to be from a red or black suit, and if the gamble pays off, there’s another option to collect it, or try to go again for an even bigger prize. Getting the guess wrong will, of course, mean the gamble is lost, and players lose the triggering win along with anything gained in the gamble round so far.
EGT pokies also share the Jackpot Cards progressive feature, which has 4 levels, Club, Diamond, Heart and Spade, with the current values displayed above the reels. It’s a random feature that can occur after any spin and takes players to a second screen where they will see 12 playing cards, which they start clicking on to reveal the suits.
Once 3 of a kind have been found, the related jackpot is paid out, and if the Spades are found first, then the best prize has been won.Egt Slot Penguin Style 2019The Verdict
Penguins and other polar wildlife seem to be quite a popular theme to be covered by online casino pokie machines. Penguin Style has some cute critters on the reels and some sweet bonus features, notably the free spins with 3 reels having wild symbols on them.Egt Slot Penguin Style Secrets
If there’s any real issues that can be pointed out, it’s the lack of a mobile-optimised version of this game, and while a 0.20 minimum stake isn’t going to break the bank, some players who are on thin ice may not want to bet this much.
Register here: http://gg.gg/ozuse
https://diarynote-jp.indered.space
Register here: http://gg.gg/ozurm
*Dual-polarized Slot Antenna For Millimeter Waves Wave
*Dual Polarized Slot Antenna
For the most common dual-polarized Vivaldi antenna shown in Figure 6 (a), in order to avoid the feeding lines overlapping each other, Vivaldi 2 is ahead of Vivaldi 1 with mm. Based on the parameter study of, which is the distance between Vivaldi 2 and Vivaldi 1, the isolation between two antenna ports is shown in Figure 7 (a).
*The design, fabrication and performance of mixers and components for low noise dual-polarized and balanced receivers at millimeter and submillimeter wavelengths both in quasi-optical and waveguide con gurations. The quasi-optical receiver utilizes a novel cross-slot antenna on a silicon hyperhemispherical lens, two junction tuning.
*Index Terms — millimeter wave, waveguide slot array, dual polarization, orthomode transducer, 40GHz 1. Introduction A dual-polarized corporate-feed waveguide slot array antenna was proposed and fabricated as a low-profile high-efficiency planar antenna for effective frequency reuse in the 60 GHz and 120 GHz bands 1 2. This paper presents a.
*< Previous
*Next >Electronic Theses and Dissertations, 2004-2019TitleAuthorKeywords
Wideband, Dual-Polarized, Differential, SIW, Cavity Backed, Slot, Antenna, Double-Resonant, Circular Polarization, ArrayAbstract
A new technique for designing wideband dual-polarized cavity-backed slot antennas is presented. The structure is in the form of a double-resonant, dual-polarized slot antenna backed by a shallow substrate integrated cavity with a depth of approximately one tenth the free space wavelength. The presence of the cavity behind the slot enhances the antenna’s directivity and reduces the possibility of surface wave propagation in the antenna substrate when the element is used in an array environment. Moreover, the dual-polarized nature of this radiating element may be exploited to synthesize any desired polarization (vertical, horizontal, RHCP, or LHCP). The double-resonant behavior observed in this substrate-integrated cavity-backed slot antenna (SICBSA) is utilized to enhance its bandwidth compared to a typical cavity-backed slot antenna. A prototype of the proposed antenna is fabricated and tested. Measurement results indicate that a bandwidth of 19%, an average gain of 5.3 dB, and a wideband differential isolation of 30 dB can be achieved using this technique. The principles of operation along with the measurement results of the fabricated prototype are presented and discussed in this dissertation. The SICBSA is investigated as a candidate for use as an array element. A uniform two element phased array is demonstrated to locate the main beam from boresight to thirty degrees. The potential effects of mutual coupling and surface wave propagation are considered and analyzed.Notes
If this is your thesis or dissertation, and want to learn how to access it or for more information about readership statistics, contact us at STARS@ucf.eduGraduation Date
2010Advisor
Wahid, ParveenDegree
Doctor of Philosophy (Ph.D.)College
College of Engineering and Computer ScienceDual-polarized Slot Antenna For Millimeter Waves WaveDepartment
Electrical Engineering and Computer ScienceDegree Program
Electrical EngineeringFormat
application/pdfIdentifier
CFE0003066URL
http://purl.fcla.edu/fcla/etd/CFE0003066Language
EnglishRelease Date
May 2010Length of Campus-only Access
NoneAccess Status
Doctoral Dissertation (Open Access)Dual Polarized Slot AntennaSTARS Citation
Paryani, Rajesh, ’Design Of A Wideband Dual-polarized Cavity Backed Slot Antenna’ (2010). Electronic Theses and Dissertations, 2004-2019. 4226. https://stars.library.ucf.edu/etd/4226 Included inCOinS
*< Previous
*Next >Electronic Theses and Dissertations, 2004-2019TitleAuthorKeywords
Wideband, Dual-Polarized, Differential, SIW, Cavity Backed, Slot, Antenna, Double-Resonant, Circular Polarization, ArrayAbstract
A new technique for designing wideband dual-polarized cavity-backed slot antennas is presented. The structure is in the form of a double-resonant, dual-polarized slot antenna backed by a shallow substrate integrated cavity with a depth of approximately one tenth the free space wavelength. The presence of the cavity behind the slot enhances the antenna’s directivity and reduces the possibility of surface wave propagation in the antenna substrate when the element is used in an array environment. Moreover, the dual-polarized nature of this radiating element may be exploited to synthesize any desired polarization (vertical, horizontal, RHCP, or LHCP). The double-resonant behavior observed in this substrate-integrated cavity-backed slot antenna (SICBSA) is utilized to enhance its bandwidth compared to a typical cavity-backed slot antenna. A prototype of the proposed antenna is fabricated and tested. Measurement results indicate that a bandwidth of 19%, an average gain of 5.3 dB, and a wideband differential isolation of 30 dB can be achieved using this technique. The principles of operation along with the measurement results of the fabricated prototype are presented and discussed in this dissertation. The SICBSA is investigated as a candidate for use as an array element. A uniform two element phased array is demonstrated to locate the main beam from boresight to thirty degrees. The potential effects of mutual coupling and surface wave propagation are considered and analyzed.Notes
If this is your thesis or dissertation, and want to learn how to access it or for more information about readership statistics, contact us at STARS@ucf.eduGraduation Date
2010Advisor
Wahid, ParveenDegree
Doctor of Philosophy (Ph.D.)College
College of Engineering and Computer ScienceDepartment
Electrical Engineering and Computer ScienceDegree Program
Electrical EngineeringFormat
application/pdfIdentifier
CFE0003066URL
http://purl.fcla.edu/fcla/etd/CFE0003066Language
EnglishRelease Date
May 2010Length of Campus-only Access
NoneAccess Status
Doctoral Dissertation (Open Access)STARS Citation
Paryani, Rajesh, ’Design Of A Wideband Dual-polarized Cavity Backed Slot Antenna’ (2010). Electronic Theses and Dissertations, 2004-2019. 4226. https://stars.library.ucf.edu/etd/4226 Included inCOinS
Register here: http://gg.gg/ozurm
https://diarynote.indered.space
*Dual-polarized Slot Antenna For Millimeter Waves Wave
*Dual Polarized Slot Antenna
For the most common dual-polarized Vivaldi antenna shown in Figure 6 (a), in order to avoid the feeding lines overlapping each other, Vivaldi 2 is ahead of Vivaldi 1 with mm. Based on the parameter study of, which is the distance between Vivaldi 2 and Vivaldi 1, the isolation between two antenna ports is shown in Figure 7 (a).
*The design, fabrication and performance of mixers and components for low noise dual-polarized and balanced receivers at millimeter and submillimeter wavelengths both in quasi-optical and waveguide con gurations. The quasi-optical receiver utilizes a novel cross-slot antenna on a silicon hyperhemispherical lens, two junction tuning.
*Index Terms — millimeter wave, waveguide slot array, dual polarization, orthomode transducer, 40GHz 1. Introduction A dual-polarized corporate-feed waveguide slot array antenna was proposed and fabricated as a low-profile high-efficiency planar antenna for effective frequency reuse in the 60 GHz and 120 GHz bands 1 2. This paper presents a.
*< Previous
*Next >Electronic Theses and Dissertations, 2004-2019TitleAuthorKeywords
Wideband, Dual-Polarized, Differential, SIW, Cavity Backed, Slot, Antenna, Double-Resonant, Circular Polarization, ArrayAbstract
A new technique for designing wideband dual-polarized cavity-backed slot antennas is presented. The structure is in the form of a double-resonant, dual-polarized slot antenna backed by a shallow substrate integrated cavity with a depth of approximately one tenth the free space wavelength. The presence of the cavity behind the slot enhances the antenna’s directivity and reduces the possibility of surface wave propagation in the antenna substrate when the element is used in an array environment. Moreover, the dual-polarized nature of this radiating element may be exploited to synthesize any desired polarization (vertical, horizontal, RHCP, or LHCP). The double-resonant behavior observed in this substrate-integrated cavity-backed slot antenna (SICBSA) is utilized to enhance its bandwidth compared to a typical cavity-backed slot antenna. A prototype of the proposed antenna is fabricated and tested. Measurement results indicate that a bandwidth of 19%, an average gain of 5.3 dB, and a wideband differential isolation of 30 dB can be achieved using this technique. The principles of operation along with the measurement results of the fabricated prototype are presented and discussed in this dissertation. The SICBSA is investigated as a candidate for use as an array element. A uniform two element phased array is demonstrated to locate the main beam from boresight to thirty degrees. The potential effects of mutual coupling and surface wave propagation are considered and analyzed.Notes
If this is your thesis or dissertation, and want to learn how to access it or for more information about readership statistics, contact us at STARS@ucf.eduGraduation Date
2010Advisor
Wahid, ParveenDegree
Doctor of Philosophy (Ph.D.)College
College of Engineering and Computer ScienceDual-polarized Slot Antenna For Millimeter Waves WaveDepartment
Electrical Engineering and Computer ScienceDegree Program
Electrical EngineeringFormat
application/pdfIdentifier
CFE0003066URL
http://purl.fcla.edu/fcla/etd/CFE0003066Language
EnglishRelease Date
May 2010Length of Campus-only Access
NoneAccess Status
Doctoral Dissertation (Open Access)Dual Polarized Slot AntennaSTARS Citation
Paryani, Rajesh, ’Design Of A Wideband Dual-polarized Cavity Backed Slot Antenna’ (2010). Electronic Theses and Dissertations, 2004-2019. 4226. https://stars.library.ucf.edu/etd/4226 Included inCOinS
*< Previous
*Next >Electronic Theses and Dissertations, 2004-2019TitleAuthorKeywords
Wideband, Dual-Polarized, Differential, SIW, Cavity Backed, Slot, Antenna, Double-Resonant, Circular Polarization, ArrayAbstract
A new technique for designing wideband dual-polarized cavity-backed slot antennas is presented. The structure is in the form of a double-resonant, dual-polarized slot antenna backed by a shallow substrate integrated cavity with a depth of approximately one tenth the free space wavelength. The presence of the cavity behind the slot enhances the antenna’s directivity and reduces the possibility of surface wave propagation in the antenna substrate when the element is used in an array environment. Moreover, the dual-polarized nature of this radiating element may be exploited to synthesize any desired polarization (vertical, horizontal, RHCP, or LHCP). The double-resonant behavior observed in this substrate-integrated cavity-backed slot antenna (SICBSA) is utilized to enhance its bandwidth compared to a typical cavity-backed slot antenna. A prototype of the proposed antenna is fabricated and tested. Measurement results indicate that a bandwidth of 19%, an average gain of 5.3 dB, and a wideband differential isolation of 30 dB can be achieved using this technique. The principles of operation along with the measurement results of the fabricated prototype are presented and discussed in this dissertation. The SICBSA is investigated as a candidate for use as an array element. A uniform two element phased array is demonstrated to locate the main beam from boresight to thirty degrees. The potential effects of mutual coupling and surface wave propagation are considered and analyzed.Notes
If this is your thesis or dissertation, and want to learn how to access it or for more information about readership statistics, contact us at STARS@ucf.eduGraduation Date
2010Advisor
Wahid, ParveenDegree
Doctor of Philosophy (Ph.D.)College
College of Engineering and Computer ScienceDepartment
Electrical Engineering and Computer ScienceDegree Program
Electrical EngineeringFormat
application/pdfIdentifier
CFE0003066URL
http://purl.fcla.edu/fcla/etd/CFE0003066Language
EnglishRelease Date
May 2010Length of Campus-only Access
NoneAccess Status
Doctoral Dissertation (Open Access)STARS Citation
Paryani, Rajesh, ’Design Of A Wideband Dual-polarized Cavity Backed Slot Antenna’ (2010). Electronic Theses and Dissertations, 2004-2019. 4226. https://stars.library.ucf.edu/etd/4226 Included inCOinS
Register here: http://gg.gg/ozurm
https://diarynote.indered.space
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