{"title":"A Nested Antenna Approach for a Quad-Band Dual Polarization Antenna Element","authors":"Gregory A. Mitchell","doi":"10.1109/APWC52648.2021.9539841","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539841","url":null,"abstract":"This paper demonstrates a quad-band antenna design that will provide four frequency bands of operation with positive realized gain across 4.0-40.0 GHz. Simulated positive realized gain is the criteria used to define the bandwidth of each individual band. For applications where impedance match and total antenna efficiency are paramount, this paper shows that a positive realized gain does not necessarily correspond to a good impedance match over all of these frequency bands.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132273362","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}
A. V. Kumar Chandrasegar, B. Gyutae Park, C. J. Koh
{"title":"Super Resolution Time Delay Estimation in Multipath Environment Using Matrix Pencil Method","authors":"A. V. Kumar Chandrasegar, B. Gyutae Park, C. J. Koh","doi":"10.1109/APWC52648.2021.9539695","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539695","url":null,"abstract":"Analysis of efficient electromagnetic waves is a very important problem in many fields. Among them, the problem of Time Delay Estimation (TDE) has been studied for a long time in the field of signal processing, sonar, radar, seismic waves, as well as the field of radio waves. This paper explores techniques for restoring super-resolution Time Delay Estimation (TDE) of signals in multi-path environments using the Matrix Pencil Method (MPM). To validate the proposed algorithm, errors were estimated and compared to the standard Multiple Signal Classification (MUSIC) and cross-correlation strategies. TDE uses cross-correlation to generate measurements based on a single model that is called the optimal world, but the precision of measurements tends to deteriorate as two or more signals are increasingly entered at times shorter than the time-period, necessitating super-resolution precise time delay calculation such as MPM and MUSIC. In this paper, a super-resolution TDE for signal spectra with data model estimation is proposed based on the MPM algorithm. The proposed Matrix Pencil Method is an adaptive super-resolution TDE algorithm that allows a single snapshot to estimate time delay measurements. Based on generalized MUSIC algorithms, a super-resolution time delay estimate is demonstrated.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129444839","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}