Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807496
T. Drysdale, Clement J. Vourch
We present the design and simulation of a leaky wave antenna that has been modified to permit high power handling and produce a conical beam that is suitable for transmitting microwave power to small unmanned aerial vehicles (SUAV). We show a design with a single vertical beam of gain 25 dBi that could support the simultaneous transmission of power to three rotary winged SUAV. It would be powered by a 5 kW UHF (915 MHz) magnetron-based generator. We also show a design producing a conical beam of gain 18 dBi that would allow multiple conventionally winged, electrically propelled to fly in a circular path around the antenna, at altitudes of 10-30 m, whilst dipping a wing into the beam. The wing would contain a rectenna, or an array of rectennas, depending on mission requirements and SUAV design, and receive 15 W per rectenna at 10 m assuming a 30 kW transmitter.
{"title":"Planar antenna for transmitting microwave power to small unmanned aerial vehicles","authors":"T. Drysdale, Clement J. Vourch","doi":"10.1109/LAPC.2016.7807496","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807496","url":null,"abstract":"We present the design and simulation of a leaky wave antenna that has been modified to permit high power handling and produce a conical beam that is suitable for transmitting microwave power to small unmanned aerial vehicles (SUAV). We show a design with a single vertical beam of gain 25 dBi that could support the simultaneous transmission of power to three rotary winged SUAV. It would be powered by a 5 kW UHF (915 MHz) magnetron-based generator. We also show a design producing a conical beam of gain 18 dBi that would allow multiple conventionally winged, electrically propelled to fly in a circular path around the antenna, at altitudes of 10-30 m, whilst dipping a wing into the beam. The wing would contain a rectenna, or an array of rectennas, depending on mission requirements and SUAV design, and receive 15 W per rectenna at 10 m assuming a 30 kW transmitter.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125792645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807518
G. Karthikeya, H. Suraj
Planar antenna array on a Femtosat is used to establish inter-satellite communication link using V-band with very high bandwidth. In this paper, the results are presented for a compact metamaterial inspired coaxial fed microstrip antenna which is designed to work at 60GHz with an impedance bandwidth of 6.5GHz. Beam steering for 7×1 array is also presented. A 7×7 planar array of the same is designed for dimensions of 3×3 cm for placement analysis on a typical femtosat model.
{"title":"mmWave metamaterial inspired coaxial-fed microstrip antenna array for Femtosat","authors":"G. Karthikeya, H. Suraj","doi":"10.1109/LAPC.2016.7807518","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807518","url":null,"abstract":"Planar antenna array on a Femtosat is used to establish inter-satellite communication link using V-band with very high bandwidth. In this paper, the results are presented for a compact metamaterial inspired coaxial fed microstrip antenna which is designed to work at 60GHz with an impedance bandwidth of 6.5GHz. Beam steering for 7×1 array is also presented. A 7×7 planar array of the same is designed for dimensions of 3×3 cm for placement analysis on a typical femtosat model.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124756372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807619
Laust Fmrch, S. Kvist, J. Thaysen, K. Jakobsen
An electrically small, electric coupled antenna that operates at the 2.4 GHz ISM band has been designed for hearing instrument applications. The antenna consists of a driven monopole and a coupled structure that is separated by an air gap. The input reflection coefficient S11 is measured and compared to the simulated results. Investigation of the antenna center frequency, reflection coefficient, and efficiency sensitivity to the position of the coupled element is performed. Simulated and measured results suggest that the antenna is a suitable candidate for hearing instrument applications.
{"title":"Electric-coupled antenna for hearing-instrument applications","authors":"Laust Fmrch, S. Kvist, J. Thaysen, K. Jakobsen","doi":"10.1109/LAPC.2016.7807619","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807619","url":null,"abstract":"An electrically small, electric coupled antenna that operates at the 2.4 GHz ISM band has been designed for hearing instrument applications. The antenna consists of a driven monopole and a coupled structure that is separated by an air gap. The input reflection coefficient S11 is measured and compared to the simulated results. Investigation of the antenna center frequency, reflection coefficient, and efficiency sensitivity to the position of the coupled element is performed. Simulated and measured results suggest that the antenna is a suitable candidate for hearing instrument applications.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124841905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807583
A. S. Sokpor, M. Mantash, A. Tarot, J. Floch
This paper describes the development of a small ribbon monopole antenna for UHF and VHF frequency maritime applications. A LC-matching circuit is used to have the antenna resonance in VHF band. In order to have a compact structure a device is used to switch between the two bands (UHF and VHF). Experimental and numerical results demonstrate that the proposed antenna exhibits a bandwidth of approximately 12.3% and 4% for UHF (420 MHz) and VHF (167 MHz) respectively. The total efficiency of the antenna was measured with two methods (reverberation chamber and Wheeler cap): it was higher than 90% in the both UHF and VHF bands. A switch device was introduced to have one antenna, and good results were obtained. Gain measurement is performed in UHF band.
{"title":"Characterisation of a small switchable ribbon monopole antenna operating in VHF/UHF bands","authors":"A. S. Sokpor, M. Mantash, A. Tarot, J. Floch","doi":"10.1109/LAPC.2016.7807583","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807583","url":null,"abstract":"This paper describes the development of a small ribbon monopole antenna for UHF and VHF frequency maritime applications. A LC-matching circuit is used to have the antenna resonance in VHF band. In order to have a compact structure a device is used to switch between the two bands (UHF and VHF). Experimental and numerical results demonstrate that the proposed antenna exhibits a bandwidth of approximately 12.3% and 4% for UHF (420 MHz) and VHF (167 MHz) respectively. The total efficiency of the antenna was measured with two methods (reverberation chamber and Wheeler cap): it was higher than 90% in the both UHF and VHF bands. A switch device was introduced to have one antenna, and good results were obtained. Gain measurement is performed in UHF band.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128954735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807548
Ahmed A. Naser, Khalil H. Sayidmarie, J. Aziz
The favorable features of the Long-Term Evolution (LTE) standard has attracted much interest. At the lower bands of the LTE systems, designers of mobile handsets antennas face challenges of the conflicting requirements of limited space and long wavelengths. A multi-band PIFA antenna that is printed directly on the substrate is proposed for mobile handset applications. A parametric study using the CST Microwave Suite is presented to show the influences of various design parameters. The antenna design was optimized to attain a bandwidth of (0.67 GHz) centered at (2 GHz). The antenna has a compact size of 60×30×1.6mm3, and can be used to serve many LTE bands in the range of (1.7 GHz) to (2.37 GHz). A prototype antenna was fabricated for experimental evaluation where good agreement between simulated and measured results was obtained.
{"title":"Design and implementation of a PIFA antenna for multi-band LTE handset applications","authors":"Ahmed A. Naser, Khalil H. Sayidmarie, J. Aziz","doi":"10.1109/LAPC.2016.7807548","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807548","url":null,"abstract":"The favorable features of the Long-Term Evolution (LTE) standard has attracted much interest. At the lower bands of the LTE systems, designers of mobile handsets antennas face challenges of the conflicting requirements of limited space and long wavelengths. A multi-band PIFA antenna that is printed directly on the substrate is proposed for mobile handset applications. A parametric study using the CST Microwave Suite is presented to show the influences of various design parameters. The antenna design was optimized to attain a bandwidth of (0.67 GHz) centered at (2 GHz). The antenna has a compact size of 60×30×1.6mm3, and can be used to serve many LTE bands in the range of (1.7 GHz) to (2.37 GHz). A prototype antenna was fabricated for experimental evaluation where good agreement between simulated and measured results was obtained.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125681347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807598
T. Tuovinen, E. Salonen, M. Berg
In the present paper, the design of an artificially anisotropic substrate (AAS) with an aperture-coupled feeding structure is proposed for the generation of circular polarization (CP) at 28 GHz. The radiator configuration is constructed by assembling thin sheets with different relative permittivities as a stack for generating different effective permittivities for the wave components. It is demonstrated that by using sufficient high inclusion permittivity material together with material close to air, the AAS is observed to show AR <; 2 dB with 25 dBi higher RHCP gain than LHCP. The proposed radiator configuration provides excellent polarization purity in addition to opportunity to be integrated close to other electrical RF components in transceiver to avoid strong wiring losses at mmWaves.
{"title":"Artificially anisotropic substrate with aperture-coupled feeding for generating circularly-polarized antenna solutions at mmWaves","authors":"T. Tuovinen, E. Salonen, M. Berg","doi":"10.1109/LAPC.2016.7807598","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807598","url":null,"abstract":"In the present paper, the design of an artificially anisotropic substrate (AAS) with an aperture-coupled feeding structure is proposed for the generation of circular polarization (CP) at 28 GHz. The radiator configuration is constructed by assembling thin sheets with different relative permittivities as a stack for generating different effective permittivities for the wave components. It is demonstrated that by using sufficient high inclusion permittivity material together with material close to air, the AAS is observed to show AR <; 2 dB with 25 dBi higher RHCP gain than LHCP. The proposed radiator configuration provides excellent polarization purity in addition to opportunity to be integrated close to other electrical RF components in transceiver to avoid strong wiring losses at mmWaves.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130568831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807535
Y. Madany, H. Elkamchouchi, A. E. Ahmed
Recent technologies enable electronic and RF circuits in communication devices and radar to be miniaturized and become physically smaller in size. Antenna design has been one of the key limiting constraints to the development of small communication terminals and also in meeting next generation and radar requirements. Multiple antenna technologies (MATs) have gained much attention in the last few years because of the huge gain. MATs can enhance the reliability and the channel capacity levels. Furthermore, multiple antenna systems can have a big contribution to reduce the interference both in the uplink and the downlink. To increase the communication systems reliability, multiple antennas can be installed at the transmitter or/and at the receiver. The idea behind multiple antenna diversity is to supply the receiver by multiple versions of the same signal transmitted via independent channels. In modern communication transceiver and radar systems, primary aims are to direct high power RF signal from transmitter to antenna while preventing leakage of that large signal into more sensitive frontend of receiver. So, a Single-Pole Double-Throw (SPDT) Transmitter/Receiver (T/R) Switch plays an important role. In this paper, design of smart distributed subarray MIMO (DS-MIMO) microstrip antenna system with controller unit and frequency agile has been introduced and investigated. All the entire proposed antenna system has been evaluated using a commercial software. The final proposed design has been fabricated and the radiation characteristics have been illustrated using network analyzer to meet the requirements for communication and radar applications.
{"title":"Smart distributed subarray MIMO (DS-MIMO) microstrip antenna system with frequency agile for communication and radar applications","authors":"Y. Madany, H. Elkamchouchi, A. E. Ahmed","doi":"10.1109/LAPC.2016.7807535","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807535","url":null,"abstract":"Recent technologies enable electronic and RF circuits in communication devices and radar to be miniaturized and become physically smaller in size. Antenna design has been one of the key limiting constraints to the development of small communication terminals and also in meeting next generation and radar requirements. Multiple antenna technologies (MATs) have gained much attention in the last few years because of the huge gain. MATs can enhance the reliability and the channel capacity levels. Furthermore, multiple antenna systems can have a big contribution to reduce the interference both in the uplink and the downlink. To increase the communication systems reliability, multiple antennas can be installed at the transmitter or/and at the receiver. The idea behind multiple antenna diversity is to supply the receiver by multiple versions of the same signal transmitted via independent channels. In modern communication transceiver and radar systems, primary aims are to direct high power RF signal from transmitter to antenna while preventing leakage of that large signal into more sensitive frontend of receiver. So, a Single-Pole Double-Throw (SPDT) Transmitter/Receiver (T/R) Switch plays an important role. In this paper, design of smart distributed subarray MIMO (DS-MIMO) microstrip antenna system with controller unit and frequency agile has been introduced and investigated. All the entire proposed antenna system has been evaluated using a commercial software. The final proposed design has been fabricated and the radiation characteristics have been illustrated using network analyzer to meet the requirements for communication and radar applications.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131948012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807556
Q. Bai, R. Singh, K. L. Ford, R. Langley, T. O’Farrell
In this paper, a compact tuneable dual-band slot antenna operating over the frequency range from 560 MHz to 1 GHz is presented and evaluated through a hardware-in-the-loop test-bed. The co-existence of high order modulation schemes is investigated in Digital Terrestrial Television (DTT) and low Long-Term Evolution (LTE) bands. Error Vector Magnitude (EVM) results show that the proposed antenna can support two operating frequency bands simultaneously where each band can be tuned independently for carrier aggregation with negligible crosstalk.
{"title":"Tuneable dual-band antenna for sub 1 GHz cellular mobile radio applications","authors":"Q. Bai, R. Singh, K. L. Ford, R. Langley, T. O’Farrell","doi":"10.1109/LAPC.2016.7807556","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807556","url":null,"abstract":"In this paper, a compact tuneable dual-band slot antenna operating over the frequency range from 560 MHz to 1 GHz is presented and evaluated through a hardware-in-the-loop test-bed. The co-existence of high order modulation schemes is investigated in Digital Terrestrial Television (DTT) and low Long-Term Evolution (LTE) bands. Error Vector Magnitude (EVM) results show that the proposed antenna can support two operating frequency bands simultaneously where each band can be tuned independently for carrier aggregation with negligible crosstalk.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130430095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807559
C. Min, N. Howland, N. R. Potts
This work investigates microstrip patch antennas on composite printed circuit boards in terms of their radiating performance, manufacturing techniques and tolerances, structural and thermal properties. The objective is to validate that the designs are capable of offering stable performance, whilst providing high structural strength with significantly low mass. The results are compared with the ones on conventional builds, and have demonstrated attractive features that are rather suitable for applications in space.
{"title":"Compact patch antennas on composite printed circuit boards in space","authors":"C. Min, N. Howland, N. R. Potts","doi":"10.1109/LAPC.2016.7807559","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807559","url":null,"abstract":"This work investigates microstrip patch antennas on composite printed circuit boards in terms of their radiating performance, manufacturing techniques and tolerances, structural and thermal properties. The objective is to validate that the designs are capable of offering stable performance, whilst providing high structural strength with significantly low mass. The results are compared with the ones on conventional builds, and have demonstrated attractive features that are rather suitable for applications in space.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126648268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807490
H. Al-Lawati, S. Khamas
A wideband, singly fed, circularly polarized, elliptical dielectric resonator antenna has been designed using a conformal open loop antenna in conjunction with a concentric parasitic open loop. A wideband 3dB axial ratio has been achieved over a bandwidth of ~12% with an impedance matching bandwidth of ~23% over the same frequency bandwidth.
{"title":"Wide-band circularly polarized elliptical dielectric resonator antenna","authors":"H. Al-Lawati, S. Khamas","doi":"10.1109/LAPC.2016.7807490","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807490","url":null,"abstract":"A wideband, singly fed, circularly polarized, elliptical dielectric resonator antenna has been designed using a conformal open loop antenna in conjunction with a concentric parasitic open loop. A wideband 3dB axial ratio has been achieved over a bandwidth of ~12% with an impedance matching bandwidth of ~23% over the same frequency bandwidth.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123320515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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