{"title":"5.8-GHz ISM band intermodulation radar for high-sensitivity motion-sensing applications","authors":"Ashish Mishra, Changzhi Li","doi":"10.1109/RWS.2018.8304930","DOIUrl":"https://doi.org/10.1109/RWS.2018.8304930","url":null,"abstract":"Many electronic components such as diodes and transistors exhibit certain degree of nonlinearity. In this paper, this nonlinearity is used for a radar target to generate intermodulation tones from incident waves with two fundamental frequencies, so that the radar detects only the target and rejects clutter reflections. In this paper, the intermodulation radar at 5.8 GHz ISM band and the passive tag were designed, fabricated and characterized. The motion and the intermodulation generated by the tag were measured, as compared with undesired fundamental reflections. This intermodulation-based nonlinear radar approach can overcome some drawbacks of harmonic radars. It has wide potential applications in clutter noise rejection and detection of unauthorized electronic devices.","PeriodicalId":170594,"journal":{"name":"2018 IEEE Radio and Wireless Symposium (RWS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125354167","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}
{"title":"Single antenna full duplex cancellation network for ISM band","authors":"G. Watkins, William H. Thompson, David Halls","doi":"10.1109/RWS.2018.8304935","DOIUrl":"https://doi.org/10.1109/RWS.2018.8304935","url":null,"abstract":"Full-Duplex (FD) communications can double wireless capacity by simultaneously transmitting and receiving (STAR) on the same frequency channel. In this paper, a single antenna solution is proposed using a hybrid coupler to isolate transmit and receive paths. The fourth port of the hybrid coupler is terminated with a variable impedance (ZV) to improve self-interference cancellation (SiC). The ZV consists of two cascaded commercially available integrated circuits (IC): a variable attenuator and a variable phase shifter, with a short circuit. This implementation resulted in 45.0 dB average SiC over a 20 MHz bandwidth in the 2.45 GHz Industrial, Medical and Scientific (ISM) band.","PeriodicalId":170594,"journal":{"name":"2018 IEEE Radio and Wireless Symposium (RWS)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126486895","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}
Wei Jiang, Yifei Jin, Tengxing Wang, Yong Huang, Guoan Wang
{"title":"3-D printed X-band Yagi-Uda antenna","authors":"Wei Jiang, Yifei Jin, Tengxing Wang, Yong Huang, Guoan Wang","doi":"10.1109/RWS.2018.8305013","DOIUrl":"https://doi.org/10.1109/RWS.2018.8305013","url":null,"abstract":"This paper presents a quarter wavelength monopole driven X-band Yagi-Uda antenna manufactured with three dimensional (3-D) printing technology. By applying image theory, only half part of conventional Yagi-Uda antenna needs to be printed to obtain equivalent performance. Since the feeding element, reflector and directors of 3-D Yagi-Uda antenna in this paper are all vertically placed pillars, substrate effects are eliminated with enabled advantage of substrate independence. In order to demonstrate the efficacy of the proposed idea, high performance Yagi-Uda antenna is implemented following classic design guidelines, and optimized dimensions are generated with ANSYS HFSS 15.0 simulation. Co-planar waveguide (CPW) feeding line is patterned first with pre-deposited 200 nm thick gold on silicon wafer. Antenna is formed with 3-D printed SU-8 pillars on top of substrate and metallized by DC sputtering method. The printed antenna is characterized using R&S ZVA67 vector network analyzer and good agreement has obtained between simulation and measurement results.","PeriodicalId":170594,"journal":{"name":"2018 IEEE Radio and Wireless Symposium (RWS)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134316996","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}
J. Russer, M. Ivrlac, M. Haider, S. Wane, D. Bajon, J. Nossek
{"title":"A compact Hertzian dipoles multiport model for near-field MIMO system assessment","authors":"J. Russer, M. Ivrlac, M. Haider, S. Wane, D. Bajon, J. Nossek","doi":"10.1109/RWS.2018.8304938","DOIUrl":"https://doi.org/10.1109/RWS.2018.8304938","url":null,"abstract":"The information flow rate in chips and also on circuit boards of modern electronic systems has developed into a bottleneck. Wireless ultrawideband (UWB) multi-input-multi-output (MIMO) chip-to-chip communication may provide a solution to this problem. The physical modeling of near-field MIMO systems requires network-oriented modeling accounting for the reciprocity of near-field MIMO antenna configurations. In this work we investigate a compact circuit model to assess near-field MIMO configurations and study a 2 × 2 MIMO test configuration for it potential with respect to its channel capacity under parameter variation concerning antenna positions and scatterers within the signal path.","PeriodicalId":170594,"journal":{"name":"2018 IEEE Radio and Wireless Symposium (RWS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130106626","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}
R. Amorim, G. Fontgalland, Joao R. Zacarias, T. Silveira, I. Fontgalland, Humberto Dionisio
{"title":"Matching improvement of an asymmetric biomimetic antenna array for source locating","authors":"R. Amorim, G. Fontgalland, Joao R. Zacarias, T. Silveira, I. Fontgalland, Humberto Dionisio","doi":"10.1109/RWS.2018.8304993","DOIUrl":"https://doi.org/10.1109/RWS.2018.8304993","url":null,"abstract":"This paper presents the design and analysis of an antenna array based on hunting capability of animals. An antenna array was built with three elements, where each element has natural resonance around 2 GHz. Nevertheless, aiming miniaturization, the antenna elements of the array are spaced with d << λ, where d is distance between the antennas. For this work, the fly Ormia Ochracea has been served as inspiration in the development of an initial two-element antenna array. The final structure is an asymmetric three-element array built to increase the antenna gain. A planar antenna array prototype with two bowtie dipole elements was built where an impedance matching network provides operating frequency around 350 MHz. An asymmetry and a matching network were introduced to reduce the coupling.","PeriodicalId":170594,"journal":{"name":"2018 IEEE Radio and Wireless Symposium (RWS)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125925018","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}
{"title":"Time and frame synchronization of IEEE 802.15.6 IR-UWB physical layer with strong narrowband interferences","authors":"Xuzhou Zuo, H. Nie","doi":"10.1109/RWS.2018.8304956","DOIUrl":"https://doi.org/10.1109/RWS.2018.8304956","url":null,"abstract":"As compared to coherent detection algorithms, the energy-detection (ED) based algorithm is more vulnerable to noise and narrowband interferences (NBIs) when detecting IR-UWB signals. Various nonlinear signal processing (NSP) technologies have been developed to mitigate the destructive effects of NBIs. In this paper, when strong NBIs present, the time and frame synchronization of the IEEE 802.15.6 IR-UWB physical layer is investigated by employing both the conventional ED-based algorithm and the one enhanced with an NSP technology. Computer simulation results show that with the existence of strong NBIs, the conventional ED-based algorithm cannot reduce synchronization errors to an acceptable level, but the NSP-enhanced one can achieve an excellent performance.","PeriodicalId":170594,"journal":{"name":"2018 IEEE Radio and Wireless Symposium (RWS)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126169973","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}
{"title":"A filter with equal-ripple negative group delay","authors":"Liang-Feng Qiu, Linsheng Wu, W. Yin, J. Mao","doi":"10.1109/RWS.2018.8305005","DOIUrl":"https://doi.org/10.1109/RWS.2018.8305005","url":null,"abstract":"A new design method is proposed for filters with equal-ripple negative group delay (NGD). By combining the coupling matrix of bandstop filter with the nonuniform-ß technique, the equal-ripple NGD characteristic is achieved. The ripple is mainly determined by the minimum dissipation factor of resonators, while the NGD is controlled by the maximum insertion loss and dissipation factors. A prototype is developed at 2.0 GHz, with the measured NGD of −3.1 ns and NGD ripple of −0.5 ns within the bandwidth of 85 MHz.","PeriodicalId":170594,"journal":{"name":"2018 IEEE Radio and Wireless Symposium (RWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129171747","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}
P. Deo, D. Mirshekar-Syahkal, G. Zheng, A. Pal, A. Mehta
{"title":"Broadband antenna for passive self-interference suppression in full-duplex communications","authors":"P. Deo, D. Mirshekar-Syahkal, G. Zheng, A. Pal, A. Mehta","doi":"10.1109/RWS.2018.8304999","DOIUrl":"https://doi.org/10.1109/RWS.2018.8304999","url":null,"abstract":"This paper presents the design, implementation and isolation performance of coaxially fed orthogonally polarized broadband rectangular spiral antenna for in-band full duplex communications. Two antennas one with RHCP and other with LHCP are designed and implemented close together on one substrate system. Measured isolation performance and radiation patterns of implemented antennas are presented. Within −10 dB impedance bandwidth of 2.2 GHz (2.5–4.7 GHz), the isolation between ports varies from −33.5 dB to −21.5 dB.","PeriodicalId":170594,"journal":{"name":"2018 IEEE Radio and Wireless Symposium (RWS)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127954033","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}
{"title":"Experimental evaluation of 61 GHz differential compensated chip-on-board interconnect for FMCW radar","authors":"W. Ahmad, D. Kissinger, H. Ng","doi":"10.1109/RWS.2018.8305008","DOIUrl":"https://doi.org/10.1109/RWS.2018.8305008","url":null,"abstract":"This paper introduces a 61 GHz Chip-on-Board interconnects between differential transceiver chip and differential antenna array. A compact differential bond wire compensation network design using stepped-impedance transmission lines is investigated for better insertion loss and bandwidth versus another double-bond wire compensation network. The compensation network is employed to interconnect an FMCW radar transceiver chip to on-board antenna array. The radar performance is then measured to verify the interconnect.","PeriodicalId":170594,"journal":{"name":"2018 IEEE Radio and Wireless Symposium (RWS)","volume":"261 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115820379","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}
Meng Zhang, Jin Li, Cheng Guo, Hongbo Wang, Jun Xu, Hongchun Yang
{"title":"A stereolithography 3-D printed Ka-band H-plane quasi-planar waveguide magic-T using slow-wave corrugations","authors":"Meng Zhang, Jin Li, Cheng Guo, Hongbo Wang, Jun Xu, Hongchun Yang","doi":"10.1109/RWS.2018.8305007","DOIUrl":"https://doi.org/10.1109/RWS.2018.8305007","url":null,"abstract":"A Äa-band H-plane quasi-planar rectangular waveguide magic-T is presented in this paper. The magic-T is based on an H-plane waveguide 3-dB directional coupler exploiting slow-wave corrugations on the narrow walls of one of the waveguide arms. These corrugations contribute to an additional phase shift of 90° in this waveguide arm. The magic-T is fabricated with ceramic-filled resin by employing stereolithography 3-D printing technique, which is followed by an electroless nickel/copper plating process to metallize its entire surface. The 3-D printed magic-T has little redundant structural material, a light weight (19.5 g), and good mechanical strength as well as thermal handling capability. This work exemplifies an effective method of fast and assembly-free prototyping multi-port waveguide passive devices.","PeriodicalId":170594,"journal":{"name":"2018 IEEE Radio and Wireless Symposium (RWS)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116970591","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}