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A high-power Ka-band single-pole single-throw switch MMIC using 0.25 µm GaN on SiC 一种大功率ka波段单极单掷开关MMIC，采用0.25µm GaN和SiC
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129738
S. Kaleem, J. Kuhn, R. Quay, M. Hein
{"title":"A high-power Ka-band single-pole single-throw switch MMIC using 0.25 µm GaN on SiC","authors":"S. Kaleem, J. Kuhn, R. Quay, M. Hein","doi":"10.1109/RWS.2015.7129738","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129738","url":null,"abstract":"A single-pole single-throw switch monolithic microwave integrated circuit using 0.25 μm GaN HEMT technology is presented for Ka-band downlink frequencies 17 - 22 GHz. On-wafer small-signal measurements demonstrated a low insertion loss of ≤1 dB, a high on-to-off isolation of ≥28 dB and a switch figure-of-merit R<sub>on</sub>C<sub>off</sub> of 330 fs. Large-signal measurements at 20GHz revealed input compression points `P<sub>-1dB</sub>' of 40dBm and 36dBm in the transmit (V<sub>c</sub> = -20 V) and isolation (V<sub>c</sub> = 0) states, respectively. The low insertion loss, high isolation, high power handling, and negligible static power consumption in compact dimensions of 1.75mm × 1.75mm form a baseline for an advanced design of a reconfigurable switch matrix based on GaN passive-HEMT.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134463561","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}
引用次数: 7
Wideband six-port receiver using elliptical microstrip-slot directional couplers 采用椭圆微带槽定向耦合器的宽带六端口接收机
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129731
M. Wei, Yu-Tzu Chen, Saad Qayyum, C. Tseng, R. Negra
{"title":"Wideband six-port receiver using elliptical microstrip-slot directional couplers","authors":"M. Wei, Yu-Tzu Chen, Saad Qayyum, C. Tseng, R. Negra","doi":"10.1109/RWS.2015.7129731","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129731","url":null,"abstract":"A prototype of a wideband six-port receiver is presented. It consists of three multilayer elliptical microstrip-slot directional couplers (MSDCs), a power divider and reactive-matching power detectors. To compose the receiver using MSDCs, a controlled-impedance via is required. The via, taken advantage of the multilayer structure, reaches a bandwidth of more than 190% and low insertion loss. 64-QAM signals with different data rates are fed for testing. From 0.5 GHz to 5 GHz the measured EVM is less than 4% with 1 Mbps data rate. The operation frequency covers many commercial standards and thus, the concept is suitable for cognitive radio application. A sensitivity of -52dBm and -58dBm is achieved at 0.9 GHz and 2.4 GHz, respectively, without LNAs.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133019618","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}
引用次数: 1
Performance comparison of raised cosine shaped and rectangular pulsed signals in E-band wireless communication systems 凸起余弦形状和矩形脉冲信号在e波段无线通信系统中的性能比较
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129729
F. Boes, J. Antes, D. Meier, T. Messinger, D. Müller, R. Henneberger, A. Tessmann, I. Kallfass
{"title":"Performance comparison of raised cosine shaped and rectangular pulsed signals in E-band wireless communication systems","authors":"F. Boes, J. Antes, D. Meier, T. Messinger, D. Müller, R. Henneberger, A. Tessmann, I. Kallfass","doi":"10.1109/RWS.2015.7129729","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129729","url":null,"abstract":"A performance comparison of broadband complex modulated non return to zero raised cosine shaped and rectangular pulsed signals is analyzed on an all-electrical MMIC-based E-band wireless data transmission set up over a free space distance of 4.1 km. We successfully demonstrated a transmission of up to 12 Gbit/s in 4.05 GHz radio frequency bandwidth, whereat the difference between both pulse forms has been analyzed in terms of EVM and BER. Compared to a rectangular pulsed signal, a raised cosine filtered communication signal suffers more from linear and nonlinear effects caused by the transmission system due to inter symbol interference and stronger requirements on the exact sampling time.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125056294","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}
引用次数: 2
Millimeter-wave channel sounding of outdoor ground reflections 室外地面反射毫米波通道测深
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129712
Richard J. Weiler, M. Peter, W. Keusgen, A. Kortke, M. Wisotzki
{"title":"Millimeter-wave channel sounding of outdoor ground reflections","authors":"Richard J. Weiler, M. Peter, W. Keusgen, A. Kortke, M. Wisotzki","doi":"10.1109/RWS.2015.7129712","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129712","url":null,"abstract":"A channel sounder for time variant channels is presented. A 60 GHz outdoor measurement campaign was conducted with focus on the properties of ground reflections over large distances up to 1000 m. A two-ray propagation model is introduced and compared to the measurement results in order to derive the ground reflection properties.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130938839","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}
引用次数: 19
Curved spiral antennas for freshwater applications 用于淡水应用的弯曲螺旋天线
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129723
R. A. Llamas, J. Niemeier, A. Kruger
{"title":"Curved spiral antennas for freshwater applications","authors":"R. A. Llamas, J. Niemeier, A. Kruger","doi":"10.1109/RWS.2015.7129723","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129723","url":null,"abstract":"Using FEKO EMSS simulation software we performed a numerical investigation of prototype, curved spiral antennas for underwater applications. We simulated flat and curved spiral antennas mounted on a pocketbook mussel (lampsilis cardium) in river water. The simulation incorporated the antenna, the mussel shell, the mussel tissue and freshwater as medium. We compared the radiation patterns and the input impedance differences between the flat and curved antennas.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127526271","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}
引用次数: 5
Resonant characteristics of metal rod resonator supported by PEEK material at 60 GHz PEEK材料支撑金属棒谐振器60 GHz谐振特性
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129741
F. Kuroki, M. Teramoto
{"title":"Resonant characteristics of metal rod resonator supported by PEEK material at 60 GHz","authors":"F. Kuroki, M. Teramoto","doi":"10.1109/RWS.2015.7129741","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129741","url":null,"abstract":"From the viewpoints of cost-effectiveness and fabrication accuracy, the self-injection locked NRD guide Gunn oscillator using a metal rod resonator was investigated at 60GHz, where the supporting method for the metal rod resonator hasn't been established. With this in mind, the metal rod resonator supported by the dielectric pieces which have a high mechanical strength and an easily fabrication was examined in this paper. First, the resonant characteristics of the PEEK (Polyether-ether-ketone) materials to use as the dielectric pieces were measured. Next, the eigenvalues of the PEEK resonator were calculated, and then the dielectric constants of the PEEK were estimated at nearly 60GHz. Finally, the lowest mode and the first higher mode resonators supported by the PEEK were designed and the resonant characteristics were calculated.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126835863","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}
引用次数: 1
Outphasing multi-level RF-PWM signals for inter-band carrier aggregation in digital transmitters 数字发射机带间载波聚合的多电平RF-PWM信号失相
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129769
SungWon Chung, R. Ma, K. Teo, K. Parsons
{"title":"Outphasing multi-level RF-PWM signals for inter-band carrier aggregation in digital transmitters","authors":"SungWon Chung, R. Ma, K. Teo, K. Parsons","doi":"10.1109/RWS.2015.7129769","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129769","url":null,"abstract":"A novel non-contiguous concurrent multi-band digital-RF transmitter architecture is presented, which is based on outphasing the multi-level RF pulse-width modulated signals (MLRF-PWM) for digital Class-S power amplifiers. In order to improve the transmitter power efficiency, the outphasing modulation in the proposed architecture effectively increases the number of MLRF-PWM signal output levels. In addition, a multi-band multi-bit band-pass delta-sigma modulator (BPDSM) with a hard clipping technique is introduced, which further improves power coding efficiency by trading off distortion performance with coding efficiency. Experimental results with a dual-channel 25-GSPS arbitrary waveform generator (AWG) demonstrate non-contiguous carrier aggregation for 3-level Class-S PAs with inter-band LTE signals at 874 MHz and 1501 MHz for the channel bandwidth of 10-MHz and 20-MHz, respectively. The proposed outphasing MLRF-PWM technique achieves 59.5% power coding efficiency, which is significant improvement from the 8.6% coding efficiency of conventional 3-level BPDSM with the experimental dual-band LTE signal transmission.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121614053","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}
引用次数: 7
A class of planar multi-band Wilkinson-type power divider with intrinsic filtering functionality 一类具有内禀滤波功能的平面多频带威尔金森型功率分压器
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129746
Raul Loeches-Sanchez, D. Psychogiou, D. Peroulis, R. Gómez‐García
{"title":"A class of planar multi-band Wilkinson-type power divider with intrinsic filtering functionality","authors":"Raul Loeches-Sanchez, D. Psychogiou, D. Peroulis, R. Gómez‐García","doi":"10.1109/RWS.2015.7129746","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129746","url":null,"abstract":"This paper focuses on the application of signal-interference techniques to develop planar multi-band Wilkinson-type power dividers. By inserting transversal signal-interference multi-band filtering cells into the branches of the classic Wilkinson-type power-divider scheme, multi-band power-splitting/combining actions with added filtering operation can be attained. Design formulas for this dual-behavior filtering/power-dividing device for a particular class of embedded multi-band filtering cell are provided. Moreover, a 1.6/3/4.4-GHz triple-band microstrip prototype is built and tested for practical validation.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124868658","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}
引用次数: 10
Transmit-receive (T/R) isolation enhancement with an indented antenna array 用缩进式天线阵列增强收发隔离
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129772
Qiang Xu, Shihan Qin, Y. Wang
{"title":"Transmit-receive (T/R) isolation enhancement with an indented antenna array","authors":"Qiang Xu, Shihan Qin, Y. Wang","doi":"10.1109/RWS.2015.7129772","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129772","url":null,"abstract":"This paper presents a T/R isolation enhancement technique that takes advantage of the different phase delay characteristics of the T/R paths in an indented antenna array. The purpose is to enhance the T/R isolation from what is offered by circulators as well as to overcome the antenna reflection power without limiting the choices of antenna polarizations and radiation patterns. The essential idea of indented array is to offset the antenna element away from the broadside of the array aperture so that the leakage signal and reflection from each individual antenna is cancelled when combined. An eight-element antenna array is designed and co-simulated with feeding network in ADS. The simulation results show 18dB average isolation improvement and 20dB return loss improvement of the eight-element antenna array.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125048031","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}
引用次数: 5
Double Quadrature Mixer for adaptive spur cancellation in ultra-wideband radios 用于超宽带无线电自适应杂散抵消的双正交混频器
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129780
Simon Mack, J. Wight
{"title":"Double Quadrature Mixer for adaptive spur cancellation in ultra-wideband radios","authors":"Simon Mack, J. Wight","doi":"10.1109/RWS.2015.7129780","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129780","url":null,"abstract":"Direct Digital Synthesizers (DDS) are known to be very spurious due to the use of Digital-to-Analog Convertors (DAC). This paper presents the phase behaviour of spurs of the AD9912 DDS and its SpurKiller cancellation system. A great variation in spur phase and a variation in increased spurious-free dynamic range (SFDR) was observed. As a result, an adaptive system is proposed using a Double Quadrature Mixer and a variable phase LO. The system is tested at the Intermediate Frequency (IF) of 1.2 GHz, simulating an Ultra-Wideband (UWB) radio. In simulation, an increase in SFDR of 29 dB resulted. In system prototype, an increase in SFDR of 10 dB resulted.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129170114","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}
引用次数: 0
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