Pub Date : 2019-06-02DOI: 10.1109/mwsym.2019.8700958
Gepeng Zhang, Jiaming Yan, Hanqing Chen, Hong Hong, Heng Zhao, Chen Gu, Xiaohua Zhu, Changzhi Li
Identifying vital-related signals from human targets in a single synthetic aperture radar (SAR) image processing is important but challenging for localization and rescue applications. Recently, hybrid-mode SAR was reported for human identification and localization by alternating a radar in both the interferometry and frequency-modulated continuous-wave (FMCW) modes. However, it increased system complexity and required doubling the scanning efforts. In this paper, a novel phase-demodulation based vital-SAR-imaging method with a portable radar in pure FMCW mode is proposed. The solution can identify human targets from the SAR image by extracting high-resolution breathing signals on a moving platform. Experiments have been con-ducted to demonstrate the accuracy and robustness of the pro-posed method.
{"title":"Phase-demodulation based Human Identification for Vital-SAR-Imaging in Pure FMCW Mode","authors":"Gepeng Zhang, Jiaming Yan, Hanqing Chen, Hong Hong, Heng Zhao, Chen Gu, Xiaohua Zhu, Changzhi Li","doi":"10.1109/mwsym.2019.8700958","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700958","url":null,"abstract":"Identifying vital-related signals from human targets in a single synthetic aperture radar (SAR) image processing is important but challenging for localization and rescue applications. Recently, hybrid-mode SAR was reported for human identification and localization by alternating a radar in both the interferometry and frequency-modulated continuous-wave (FMCW) modes. However, it increased system complexity and required doubling the scanning efforts. In this paper, a novel phase-demodulation based vital-SAR-imaging method with a portable radar in pure FMCW mode is proposed. The solution can identify human targets from the SAR image by extracting high-resolution breathing signals on a moving platform. Experiments have been con-ducted to demonstrate the accuracy and robustness of the pro-posed method.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"92 1","pages":"152-155"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86709799","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700766
Kai Zhan, Yao Liu, T. Kamgaing, R. Khanna, G. Dogiamis, Huaping Liu, A. Natarajan
Space-shift keying (SSK) or spatial modulation can provide increased energy-efficiency by using antennas/beam switching to transfer data. Such links are attractive at mm-wave due to small physical size and potential applications in slow-varying short-range channels. Low-power pulsed phased-array mm-wave TX has been demonstrated that maintains energy-efficiency while providing beam switching functionality. In this work, a two-element mm-wave FSK/SSK RX is presented that can concurrently demodulate FSK and SSK by using relative outputs of a two-element combiner to detect angle-of-incidence. A 65-nm CMOS 68 GHz 2-element RX prototype is packaged with aperture-coupled PCB antennas to demonstrate >2 Gb/s data rates while consuming <30 mW across both elements. The first end-to-end CMOS SSK link using CMOS FSK-SSK TX and RX is demonstrated with 2 Gb/s data transfer across ˜6 cm in a reflective channel.
{"title":"A Low-Power FSK/Spatial Modulation Receiver for Short-Range mm-Wave Wireless Links","authors":"Kai Zhan, Yao Liu, T. Kamgaing, R. Khanna, G. Dogiamis, Huaping Liu, A. Natarajan","doi":"10.1109/mwsym.2019.8700766","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700766","url":null,"abstract":"Space-shift keying (SSK) or spatial modulation can provide increased energy-efficiency by using antennas/beam switching to transfer data. Such links are attractive at mm-wave due to small physical size and potential applications in slow-varying short-range channels. Low-power pulsed phased-array mm-wave TX has been demonstrated that maintains energy-efficiency while providing beam switching functionality. In this work, a two-element mm-wave FSK/SSK RX is presented that can concurrently demodulate FSK and SSK by using relative outputs of a two-element combiner to detect angle-of-incidence. A 65-nm CMOS 68 GHz 2-element RX prototype is packaged with aperture-coupled PCB antennas to demonstrate >2 Gb/s data rates while consuming <30 mW across both elements. The first end-to-end CMOS SSK link using CMOS FSK-SSK TX and RX is demonstrated with 2 Gb/s data transfer across ˜6 cm in a reflective channel.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"17 1","pages":"492-495"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86191626","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8701016
K. Okamoto, T. Ueda, T. Itoh
An enhancement technique of phase-shifting nonreciprocity in normally magnetized ferrite metamaterial lines is proposed by applying a slow wave structure based on spoof surface plasmon. The nonreciprocity is further enhanced by inserting an appropriate value of capacitance in the corrugated metallic strip. Metamaterial lines with high dispersive characteristics and large nonreciprocity were numerically designed and demonstrated in the experiment.
{"title":"Enhancement of Phase Shifting Nonreciprocity in Normally Magnetized Ferrite Metamaterial Lines Using Slow Wave Structure Based on Spoof Surface Plasmon","authors":"K. Okamoto, T. Ueda, T. Itoh","doi":"10.1109/mwsym.2019.8701016","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8701016","url":null,"abstract":"An enhancement technique of phase-shifting nonreciprocity in normally magnetized ferrite metamaterial lines is proposed by applying a slow wave structure based on spoof surface plasmon. The nonreciprocity is further enhanced by inserting an appropriate value of capacitance in the corrugated metallic strip. Metamaterial lines with high dispersive characteristics and large nonreciprocity were numerically designed and demonstrated in the experiment.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"7 1","pages":"28-30"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85863336","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8701066
Manoj Johnson, Abhishek Agrawal, A. Natarajan
Applying orthogonal sequences to N-path filters promises reconfigurable select/reject filtering of signals based on their spatial, spectral and code-domain properties. Achieving code and frequency-domain notch filtering using inductors instead of capacitors has been challenging due to parasitics and self-resonance associated with large off-chip inductors. In this work, N-path frequency/code-domain reject and select filtering is demonstrated using N-path switching with passive inductors. A cascaded inductor approach and differential N-path filtering is used to overcome inductor parasitics and enable GHz operation. A 65-nm CMOS prototype of a code-domain notch filter followed by a code-domain select receiver demonstrates 0.5 GHz to 1.0 GHz operation with 26 dB blocker filtering with 8 dBm power handling, while consuming 60 mW (at 1 GHz LO) and occupying 1.2 mm2 of die area.
{"title":"Frequency/Code-Domain Filtering Using Walsh-Function Sequence Based N-path Filters","authors":"Manoj Johnson, Abhishek Agrawal, A. Natarajan","doi":"10.1109/mwsym.2019.8701066","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8701066","url":null,"abstract":"Applying orthogonal sequences to N-path filters promises reconfigurable select/reject filtering of signals based on their spatial, spectral and code-domain properties. Achieving code and frequency-domain notch filtering using inductors instead of capacitors has been challenging due to parasitics and self-resonance associated with large off-chip inductors. In this work, N-path frequency/code-domain reject and select filtering is demonstrated using N-path switching with passive inductors. A cascaded inductor approach and differential N-path filtering is used to overcome inductor parasitics and enable GHz operation. A 65-nm CMOS prototype of a code-domain notch filter followed by a code-domain select receiver demonstrates 0.5 GHz to 1.0 GHz operation with 26 dB blocker filtering with 8 dBm power handling, while consuming 60 mW (at 1 GHz LO) and occupying 1.2 mm2 of die area.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"29 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85882046","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700906
Christopher M. Grotsch, B. Schoch, S. Wagner, I. Kallfass
In this paper we present a transmit and receive MMIC for FMCW radar. The transmitter consisting of a frequency multiplier-by-three and a power amplifier featuring a high output power of 7 dBm with a 60 GHz 3-dB RF-bandwidth. The receiver is designed to be highly linear over a LO and RF bandwidth from 235 to 285 GHz. It employs a frequency tripler and a power amplifier as driver stage for a passive I/Q downconverter which enables an image reject architecture. To ensure linear operation and improve the overall receiver noise an input amplifier stage with an input referred 1-dB compression point exceeding -3 dBm is also integrated. The chipset is realized in a 35 nm metamorphic high electron mobility transistor technology.
{"title":"A Highly Linear FMCW Radar Chipset in H-Band with 50 GHz Bandwidth","authors":"Christopher M. Grotsch, B. Schoch, S. Wagner, I. Kallfass","doi":"10.1109/mwsym.2019.8700906","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700906","url":null,"abstract":"In this paper we present a transmit and receive MMIC for FMCW radar. The transmitter consisting of a frequency multiplier-by-three and a power amplifier featuring a high output power of 7 dBm with a 60 GHz 3-dB RF-bandwidth. The receiver is designed to be highly linear over a LO and RF bandwidth from 235 to 285 GHz. It employs a frequency tripler and a power amplifier as driver stage for a passive I/Q downconverter which enables an image reject architecture. To ensure linear operation and improve the overall receiver noise an input amplifier stage with an input referred 1-dB compression point exceeding -3 dBm is also integrated. The chipset is realized in a 35 nm metamorphic high electron mobility transistor technology.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"1 1","pages":"646-649"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86012484","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700993
Yansong Yang, Ruochen Lu, Ali Kourani, S. Gong
A brief review of the motivations and development effort for LN thin film devices is offered before recent advances on LN thin film devices are reported. LN devices for a sub-6 GHz band and X-band have designed and fabricated. As a result of the design and implementation effort, the most advanced LN resonator is reported at 1. 7 GHz with a kt2 of 14%, a high Q of 3112, a FoM of 435, and a spurious-free response, greatly surpassing the state of art at this frequency range. An acoustic prototype filter at 10 GHz is also demonstrated with an insertion loss of 3.8 dB, out of band rejection of 20 dB, and an FBW of 0.8%.
{"title":"Advancing Lithium Niobate Based Thin Film Devices for 5G Front-Ends","authors":"Yansong Yang, Ruochen Lu, Ali Kourani, S. Gong","doi":"10.1109/mwsym.2019.8700993","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700993","url":null,"abstract":"A brief review of the motivations and development effort for LN thin film devices is offered before recent advances on LN thin film devices are reported. LN devices for a sub-6 GHz band and X-band have designed and fabricated. As a result of the design and implementation effort, the most advanced LN resonator is reported at 1. 7 GHz with a kt2 of 14%, a high Q of 3112, a FoM of 435, and a spurious-free response, greatly surpassing the state of art at this frequency range. An acoustic prototype filter at 10 GHz is also demonstrated with an insertion loss of 3.8 dB, out of band rejection of 20 dB, and an FBW of 0.8%.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"2 1","pages":"881-884"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83098445","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8701093
P. Theofanopoulos, G. Trichopoulos
We characterize a novel fabrication procedure for the implementation of large arrays of subwavelength graphene devices. With the proposed process, we can now integrate graphene layers on large substrate areas (> 4 cm2) and implement thousands of devices with high-yield (> 90 %). Examples of such systems include broadband THz phased arrays and metasurfaces that can be used in THz imaging and sensing. Current nano-fabrication processes hinder the proliferation of large arrays due to the fragile nature of graphene. Conversely, we use titanium sacrificial layers to protect the delicate graphene throughout the fabrication process. Thus, we minimize graphene delamination and enable multiple devices on large-area substrates with high-yield. In addition, we present a series of on-wafer measurement results in the 220-330 GHz band, verifying the robustness of our fabrication process.
{"title":"On-Wafer Graphene Devices for THz Applications Using a High-Yield Fabrication Process","authors":"P. Theofanopoulos, G. Trichopoulos","doi":"10.1109/mwsym.2019.8701093","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8701093","url":null,"abstract":"We characterize a novel fabrication procedure for the implementation of large arrays of subwavelength graphene devices. With the proposed process, we can now integrate graphene layers on large substrate areas (> 4 cm2) and implement thousands of devices with high-yield (> 90 %). Examples of such systems include broadband THz phased arrays and metasurfaces that can be used in THz imaging and sensing. Current nano-fabrication processes hinder the proliferation of large arrays due to the fragile nature of graphene. Conversely, we use titanium sacrificial layers to protect the delicate graphene throughout the fabrication process. Thus, we minimize graphene delamination and enable multiple devices on large-area substrates with high-yield. In addition, we present a series of on-wafer measurement results in the 220-330 GHz band, verifying the robustness of our fabrication process.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"8 1","pages":"1107-1110"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89498792","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8701099
Yunfeng Dong, V. Zhurbenko, P. J. Hanberg, T. Johansen
This paper presents a rectangular waveguide-to-coplanar waveguide (CPW) transition using metal ridge at D-band (110-170 GHz). The proposed transition is useful in particular for packaging circuits with large dimensions. A CPW with extended ground traces is designed on a quartz substrate and its performance is compared with a conventional CPW. Besides, an absorber layer is added underneath for restricting parasitic modes. As the critical part of the transition, the metal ridge is described in detail. The proposed rectangular waveguide-to-CPW transition using metal ridge is designed, fabricated, and measured in a back-to-back configuration. The electric field distribution as well as the assembly of the proposed transition is illustrated. For the fabricated transition prototype in a back-to-back configuration, the measured return loss remains better than 12.5 dB at D-band which corresponds to a bandwidth of 60 GHz. From 122.5 GHz to 156.5 GHz, the measured insertion loss is less than 3 dB while it increases to 4 dB at the maximum. Thus, each fabricated transition contributes less than 2 dB insertion loss at D-band.
{"title":"A D-Band Rectangular Waveguide-to-Coplanar Waveguide Transition Using Metal Ridge","authors":"Yunfeng Dong, V. Zhurbenko, P. J. Hanberg, T. Johansen","doi":"10.1109/mwsym.2019.8701099","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8701099","url":null,"abstract":"This paper presents a rectangular waveguide-to-coplanar waveguide (CPW) transition using metal ridge at D-band (110-170 GHz). The proposed transition is useful in particular for packaging circuits with large dimensions. A CPW with extended ground traces is designed on a quartz substrate and its performance is compared with a conventional CPW. Besides, an absorber layer is added underneath for restricting parasitic modes. As the critical part of the transition, the metal ridge is described in detail. The proposed rectangular waveguide-to-CPW transition using metal ridge is designed, fabricated, and measured in a back-to-back configuration. The electric field distribution as well as the assembly of the proposed transition is illustrated. For the fabricated transition prototype in a back-to-back configuration, the measured return loss remains better than 12.5 dB at D-band which corresponds to a bandwidth of 60 GHz. From 122.5 GHz to 156.5 GHz, the measured insertion loss is less than 3 dB while it increases to 4 dB at the maximum. Thus, each fabricated transition contributes less than 2 dB insertion loss at D-band.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"21 1","pages":"1050-1053"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89697863","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700909
Ramon A. Beltran
An outphasing transmitter using true-transient class-E power amplifiers shows limited frequency bandwidth due to the high sensitivity of the amplifiers to frequency-dependent varying load impedances when performing into outphasing conditions. This paper describes a design technique for broadband operation of an outphasing transmitter using class-E amplifiers. Proper loading network tuning and asymmetric combiner phasing allow optimum impedances to be presented to the amplifiers across a frequency band and as a function of input-drive phase angle. The concept is verified with a prototype at 10-MHz center frequency showing 40% bandwidth. The measured efficiency curves resemble those of conventional class-E outphasing at frequencies from 8 to 12-MHz achieving efficiencies greater than 80% or so at 10-dB output power back-off. On the other hand, the output power varies around 1.5-dB within the same frequency range which is almost half of the variation of a single-ended broadband class-E amplifier.
{"title":"Broadband Outphasing Transmitter using Class-E Power Amplifiers","authors":"Ramon A. Beltran","doi":"10.1109/mwsym.2019.8700909","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700909","url":null,"abstract":"An outphasing transmitter using true-transient class-E power amplifiers shows limited frequency bandwidth due to the high sensitivity of the amplifiers to frequency-dependent varying load impedances when performing into outphasing conditions. This paper describes a design technique for broadband operation of an outphasing transmitter using class-E amplifiers. Proper loading network tuning and asymmetric combiner phasing allow optimum impedances to be presented to the amplifiers across a frequency band and as a function of input-drive phase angle. The concept is verified with a prototype at 10-MHz center frequency showing 40% bandwidth. The measured efficiency curves resemble those of conventional class-E outphasing at frequencies from 8 to 12-MHz achieving efficiencies greater than 80% or so at 10-dB output power back-off. On the other hand, the output power varies around 1.5-dB within the same frequency range which is almost half of the variation of a single-ended broadband class-E amplifier.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"46 1","pages":"67-70"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83026572","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8701092
J. Plouchart, X. Gu, Wooram Lee, A. Tzadok, Duixian Liu, Huijian Liu, M. Yeck, C. Baks, A. Valdes-Garcia
Compact phased array transmitter (TX) and receiver (RX) modules operating at 94 GHz are presented and demonstrated in a 3D radar imaging system. Each module consists of four SiGe ICs and a package that integrates 8X8 dual-polarized antennas and 10-GHz IF power combiners. Each TX and RX IC integrates beam-forming, frequency conversion, LO generation, and digital control functions. The modules have beam steering capabilities in both azimuth and elevation over a range of +/- 32 degrees. A radar imaging system is implemented comprising an evaluation board with one TX module and one RX module, FMCW signal generation and acquisition components, and an FPGA for fast beam steering control. The system can steer TX and RX beams to a given direction and perform a radar measurement in that direction in less than 100us, enabling 3D imaging in real time. Measurement results are presented for the modules and the prototype imaging system.
{"title":"Si-Based 94-GHz Phased Array Transmit and Receive Modules for Real-Time 3D Radar Imaging","authors":"J. Plouchart, X. Gu, Wooram Lee, A. Tzadok, Duixian Liu, Huijian Liu, M. Yeck, C. Baks, A. Valdes-Garcia","doi":"10.1109/mwsym.2019.8701092","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8701092","url":null,"abstract":"Compact phased array transmitter (TX) and receiver (RX) modules operating at 94 GHz are presented and demonstrated in a 3D radar imaging system. Each module consists of four SiGe ICs and a package that integrates 8X8 dual-polarized antennas and 10-GHz IF power combiners. Each TX and RX IC integrates beam-forming, frequency conversion, LO generation, and digital control functions. The modules have beam steering capabilities in both azimuth and elevation over a range of +/- 32 degrees. A radar imaging system is implemented comprising an evaluation board with one TX module and one RX module, FMCW signal generation and acquisition components, and an FPGA for fast beam steering control. The system can steer TX and RX beams to a given direction and perform a radar measurement in that direction in less than 100us, enabling 3D imaging in real time. Measurement results are presented for the modules and the prototype imaging system.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"7 1","pages":"532-535"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74284490","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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