Pub Date : 2011-06-05DOI: 10.1109/MWSYM.2011.5972957
A. Grichener, Gabriel M. Rebeiz
A 20–40 GHz 2-port quasi-optical scalar network analyzer consisting of a transmitter and receiver both built in planar technology is presented. The network analyzer is based on a Schottky-diode mixer integrated inside a double-slot antenna and fed differentially by a CPW transmission line. The antenna is placed on an extended hemispherical high-resistivity silicon substrate lens. The LO signal is swept from 3-5 GHz and high-order harmonic mixing in both up- and down- conversion mode is used to realize the 20–40 GHz RF bandwidth. The network analyzer resulted in a dynamic range of greater than 30 dB and was successfully used to measure a frequency selective surface designed to give a band-pass response at 30 GHz. Furthermore, the system was built with circuits and components for easy scaling to millimeter-wave frequencies which is the primary motivation for this work. The application areas for a millimeter-wave network analyzer include material characterization and art diagnostics.
{"title":"A 20–40 GHz quasi-optical network analyzer","authors":"A. Grichener, Gabriel M. Rebeiz","doi":"10.1109/MWSYM.2011.5972957","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972957","url":null,"abstract":"A 20–40 GHz 2-port quasi-optical scalar network analyzer consisting of a transmitter and receiver both built in planar technology is presented. The network analyzer is based on a Schottky-diode mixer integrated inside a double-slot antenna and fed differentially by a CPW transmission line. The antenna is placed on an extended hemispherical high-resistivity silicon substrate lens. The LO signal is swept from 3-5 GHz and high-order harmonic mixing in both up- and down- conversion mode is used to realize the 20–40 GHz RF bandwidth. The network analyzer resulted in a dynamic range of greater than 30 dB and was successfully used to measure a frequency selective surface designed to give a band-pass response at 30 GHz. Furthermore, the system was built with circuits and components for easy scaling to millimeter-wave frequencies which is the primary motivation for this work. The application areas for a millimeter-wave network analyzer include material characterization and art diagnostics.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"66 34","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134196898","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972634
O. Karabey, F. Goelden,, A. Gaebler, S. Strunck, R. Jakoby
This paper presents the design and realization of a tunable periodically loaded slot line phase shifters. The tunability is achieved by using liquid crystal (LC) as a tunable dielectric. Two prototypes are fabricated based on a printed circuit board (PCB) - LC - PCB structure for 12 GHz and a glass - LC - glass structure for 18 GHz. Measurements are performed and the figure of merits of the phase shifters are determined as 47 °/dB and 42 °/dB, respectively.
{"title":"Tunable loaded line phase shifters for microwave applications","authors":"O. Karabey, F. Goelden,, A. Gaebler, S. Strunck, R. Jakoby","doi":"10.1109/MWSYM.2011.5972634","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972634","url":null,"abstract":"This paper presents the design and realization of a tunable periodically loaded slot line phase shifters. The tunability is achieved by using liquid crystal (LC) as a tunable dielectric. Two prototypes are fabricated based on a printed circuit board (PCB) - LC - PCB structure for 12 GHz and a glass - LC - glass structure for 18 GHz. Measurements are performed and the figure of merits of the phase shifters are determined as 47 °/dB and 42 °/dB, respectively.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134427839","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972865
F. Huang, S. Fouladi, R. Mansour
This paper presents the design and implementation of a new class of high-Q tunable dielectric resonator (DR) filters based on microelectromechanical systems (MEMS) switches. The use of MEMS switches results in the compact implementation of the proposed filter with near to zero DC power consumption for tuning and high tuning speed. The filter consists of two disk shape dielectric resonators with circular holes created in the center of each resonator. An initial prototype of the filter is assembled. The filter operates in TME mode at a center frequency of 4.8 GHz with a bandwidth of 21 MHz. Measurement results of this prototype demonstrate a tuning range of 160 MHz while the quality factor ranges from 1200–510 over the tuning range. The proposed tuning approach is applicable to other modes of dielectric resonator filters.
{"title":"A novel MEMS-based tunable dielectric resonator filter","authors":"F. Huang, S. Fouladi, R. Mansour","doi":"10.1109/MWSYM.2011.5972865","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972865","url":null,"abstract":"This paper presents the design and implementation of a new class of high-Q tunable dielectric resonator (DR) filters based on microelectromechanical systems (MEMS) switches. The use of MEMS switches results in the compact implementation of the proposed filter with near to zero DC power consumption for tuning and high tuning speed. The filter consists of two disk shape dielectric resonators with circular holes created in the center of each resonator. An initial prototype of the filter is assembled. The filter operates in TME mode at a center frequency of 4.8 GHz with a bandwidth of 21 MHz. Measurement results of this prototype demonstrate a tuning range of 160 MHz while the quality factor ranges from 1200–510 over the tuning range. The proposed tuning approach is applicable to other modes of dielectric resonator filters.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133760899","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972941
K. Hettak, T. Ross, J. Wight, G. Morin
This paper proposes a new approach for realizing a compact SPDT switch incorporating compact, elevated coplanar waveguide (ECPW) series stubs in conjunction with CPS series stubs in order to extend the operating frequency. The design technique has been successfully demonstrated using a multi-layer 90nm CMOS process. The proposed SPDT switch takes advantage of the multi-level metallization processes offered in CMOS technology. The intrinsic area of the fabricated 3D SPDT switch is significantly reduced. Simulated and experimental results are presented in support of the novel compact switch. The switch achieves a measured insertion loss of less than 3.8 dB and a measured isolation of better than 18 dB from DC to 70 GHz.
{"title":"DC to 70 GHz 90 nm 3D CMOS SPDT using elevated CPW and CPS series stubs","authors":"K. Hettak, T. Ross, J. Wight, G. Morin","doi":"10.1109/MWSYM.2011.5972941","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972941","url":null,"abstract":"This paper proposes a new approach for realizing a compact SPDT switch incorporating compact, elevated coplanar waveguide (ECPW) series stubs in conjunction with CPS series stubs in order to extend the operating frequency. The design technique has been successfully demonstrated using a multi-layer 90nm CMOS process. The proposed SPDT switch takes advantage of the multi-level metallization processes offered in CMOS technology. The intrinsic area of the fabricated 3D SPDT switch is significantly reduced. Simulated and experimental results are presented in support of the novel compact switch. The switch achieves a measured insertion loss of less than 3.8 dB and a measured isolation of better than 18 dB from DC to 70 GHz.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122348330","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972951
M. Chia, CK Ang, B. Luo, S. Leong
We have developed a wideband submillimeterwave communications transceiver system, which is operating at a carrier of 307.2 GHz with bandwidth of 30 GHz. This is able to transmit and receive high speed wireless signals at 12.5 Gigabits per second (Gbps) using coherent binary phase shift keying (BPSK) modulation to about 2 meters. Measured results are reported for Bit Error Rates (BER) and constellation plot. Design considerations for this direct conversion transceiver architecture using subharmonic mixers at submillimeterwave and 76.8 GHz synthesizer will be discussed.
{"title":"Wideband 307 GHz transceiver system for high speed digital wireless at 12.5 Gbps","authors":"M. Chia, CK Ang, B. Luo, S. Leong","doi":"10.1109/MWSYM.2011.5972951","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972951","url":null,"abstract":"We have developed a wideband submillimeterwave communications transceiver system, which is operating at a carrier of 307.2 GHz with bandwidth of 30 GHz. This is able to transmit and receive high speed wireless signals at 12.5 Gigabits per second (Gbps) using coherent binary phase shift keying (BPSK) modulation to about 2 meters. Measured results are reported for Bit Error Rates (BER) and constellation plot. Design considerations for this direct conversion transceiver architecture using subharmonic mixers at submillimeterwave and 76.8 GHz synthesizer will be discussed.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114571797","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972980
T. Thai, H. Aubert, P. Pons, M. Tentzeris, R. Plana
A highly sensitive wireless passive radio frequency strain transducer is designed and developed based on a patch antenna loaded with an open loop. A novel idea of utilizing a cantilever at the gap of the open loop significantly improves the sensitivity of resonant frequency shifts. The ground plane allows the sensitivity of the sensor to be independent from the applied surface. A proof-of-concept prototype is fabricated and the measurements successfully validate the operation principle.
{"title":"Design of a highly sensitive wireless passive RF strain transducer","authors":"T. Thai, H. Aubert, P. Pons, M. Tentzeris, R. Plana","doi":"10.1109/MWSYM.2011.5972980","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972980","url":null,"abstract":"A highly sensitive wireless passive radio frequency strain transducer is designed and developed based on a patch antenna loaded with an open loop. A novel idea of utilizing a cantilever at the gap of the open loop significantly improves the sensitivity of resonant frequency shifts. The ground plane allows the sensitivity of the sensor to be independent from the applied surface. A proof-of-concept prototype is fabricated and the measurements successfully validate the operation principle.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117242169","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972724
D. Goshi, Y. Liu, K. Mai, L. Bui, Y. Shih
This paper presents an interferometric real-beam scanning FMCW imaging radar. As opposed to the more commonly discussed interferometric SAR radar system that requires a finite capture interval as well as traditionally long post-processing times, the proposed system is a real-time imaging system that generates a 10Hz real-beam radar image. The interferometric technique is proposed as a means to enhance the raw 2D-based image result by providing target height estimation from phase difference measurements, paving a foundation for a 3D volumetric sensor. The general concepts of the system will be discussed followed by details on the RF characteristics and performance. Lastly, the initial validation results of phase estimation measurements will be presented.
{"title":"A W-band interferometric real-beam scanning FMCW imaging radar","authors":"D. Goshi, Y. Liu, K. Mai, L. Bui, Y. Shih","doi":"10.1109/MWSYM.2011.5972724","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972724","url":null,"abstract":"This paper presents an interferometric real-beam scanning FMCW imaging radar. As opposed to the more commonly discussed interferometric SAR radar system that requires a finite capture interval as well as traditionally long post-processing times, the proposed system is a real-time imaging system that generates a 10Hz real-beam radar image. The interferometric technique is proposed as a means to enhance the raw 2D-based image result by providing target height estimation from phase difference measurements, paving a foundation for a 3D volumetric sensor. The general concepts of the system will be discussed followed by details on the RF characteristics and performance. Lastly, the initial validation results of phase estimation measurements will be presented.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114966814","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972579
M. Tsai, S. Hsu, F. Hsueh, C. Jou, T. Yeh, Jun-De Jin, H. Hsieh
By means of co-designed methodology, a 24-GHz low-noise amplifier, utilizing junction varactors as ESD protection, is first demonstrated by a 65-nm CMOS technology. The ESD protection capability of the junction varactors with multi-finger topology is characterized in details by transmission line pulse (TLP) measurements. Under a 1.2-V supply voltage and a 5.8-mA drain current, the proposed LNA achieves a 1.4-A TLP failure level, corresponding to an over 2-kV human body model (HBM) ESD protection. The LNA presents a lowest noise figure of 2.8 dB at 23.5 GHz and a peak power gain of 14.3 dB at 24 GHz, respectively. The input third-order intercept point (IIP3) is −5 dBm and the input and output return losses are both greater than 10 dB. To the best of our knowledge, this is the first attempt using junction varactors as the ESD device in 65-nm CMOS.
{"title":"A 24-GHz low-noise amplifier co-designed with ESD protection using junction varactors in 65-nm RF CMOS","authors":"M. Tsai, S. Hsu, F. Hsueh, C. Jou, T. Yeh, Jun-De Jin, H. Hsieh","doi":"10.1109/MWSYM.2011.5972579","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972579","url":null,"abstract":"By means of co-designed methodology, a 24-GHz low-noise amplifier, utilizing junction varactors as ESD protection, is first demonstrated by a 65-nm CMOS technology. The ESD protection capability of the junction varactors with multi-finger topology is characterized in details by transmission line pulse (TLP) measurements. Under a 1.2-V supply voltage and a 5.8-mA drain current, the proposed LNA achieves a 1.4-A TLP failure level, corresponding to an over 2-kV human body model (HBM) ESD protection. The LNA presents a lowest noise figure of 2.8 dB at 23.5 GHz and a peak power gain of 14.3 dB at 24 GHz, respectively. The input third-order intercept point (IIP3) is −5 dBm and the input and output return losses are both greater than 10 dB. To the best of our knowledge, this is the first attempt using junction varactors as the ESD device in 65-nm CMOS.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116173100","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972764
H. Kayano, T. Kawaguchi, N. Shiokawa, K. Nakayama, M. Yamazaki
We have proposed narrow-band transmitting hybrid filter which puts on the output of the 100kW klystron amplifier for X-band radar application. A transmitting hybrid filter consists of superconducting resonators and conventional cavities. Novel hybrid filter structured with two cascade connections of reflection-type cavities, reflection-type superconducting resonators, and open-stub realizes low power concentration in superconducting resonators. Compatibility of the high power handling capability and the sharp skirt feature is possible by this filter. As a result, power handling capability for the hybrid filter was obtained 100 kW. Also, this filter had fractional bandwidth of 0.055%. Given these features, the transmitting signal with low spurious and the high density carrier frequency assignment for next-generation Radar applications is expected to be realized by applying these filters.
{"title":"Narrow-band superconducting hybrid filter for 100kW transmitter of X-band radar application","authors":"H. Kayano, T. Kawaguchi, N. Shiokawa, K. Nakayama, M. Yamazaki","doi":"10.1109/MWSYM.2011.5972764","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972764","url":null,"abstract":"We have proposed narrow-band transmitting hybrid filter which puts on the output of the 100kW klystron amplifier for X-band radar application. A transmitting hybrid filter consists of superconducting resonators and conventional cavities. Novel hybrid filter structured with two cascade connections of reflection-type cavities, reflection-type superconducting resonators, and open-stub realizes low power concentration in superconducting resonators. Compatibility of the high power handling capability and the sharp skirt feature is possible by this filter. As a result, power handling capability for the hybrid filter was obtained 100 kW. Also, this filter had fractional bandwidth of 0.055%. Given these features, the transmitting signal with low spurious and the high density carrier frequency assignment for next-generation Radar applications is expected to be realized by applying these filters.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115034121","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972748
Chieh-Hsun Hsiao, Chi-Tsan Chen, T. Horng, K. Peng
This paper studies the local oscillator (LO) pulling problems associated with a direct-conversion transmitter (DCT) that uses non-constant envelope modulation schemes. The relevant theory provides a time-domain LO model with a modulated outer self-injection to predict the phase fluctuation of an LO that is pulled by the transmitter's modulated output signal. Based on a theoretical analysis, the proposed model can be used to evaluate the degraded quality of the transmission signal in terms of error vector magnitude (EVM) and adjacent channel power ratio (ACPR). To mitigate the effects of LO pulling, a novel approach for reducing the AM-FM and PM-FM distortions by a combination of second-point VCO modulation and inner self-injection is proposed. The improved performance is verified by implementing a Quadrature-Phase-Shift-Keying (QPSK) transmitter for cdma2000 1× applications. The theoretical and experimental results agree closely with each other.
{"title":"Direct-conversion transmitter with resistance to local oscillator pulling in non-constant envelope modulation systems","authors":"Chieh-Hsun Hsiao, Chi-Tsan Chen, T. Horng, K. Peng","doi":"10.1109/MWSYM.2011.5972748","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972748","url":null,"abstract":"This paper studies the local oscillator (LO) pulling problems associated with a direct-conversion transmitter (DCT) that uses non-constant envelope modulation schemes. The relevant theory provides a time-domain LO model with a modulated outer self-injection to predict the phase fluctuation of an LO that is pulled by the transmitter's modulated output signal. Based on a theoretical analysis, the proposed model can be used to evaluate the degraded quality of the transmission signal in terms of error vector magnitude (EVM) and adjacent channel power ratio (ACPR). To mitigate the effects of LO pulling, a novel approach for reducing the AM-FM and PM-FM distortions by a combination of second-point VCO modulation and inner self-injection is proposed. The improved performance is verified by implementing a Quadrature-Phase-Shift-Keying (QPSK) transmitter for cdma2000 1× applications. The theoretical and experimental results agree closely with each other.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115309437","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：