{"title":"A Wideband Circulator Leakage Canceler for Retro-Directive RF System","authors":"T.‐B. Ngo, Quang-Huy Do, Sangwoog Yoon","doi":"10.1109/LMWC.2022.3170590","DOIUrl":null,"url":null,"abstract":"This letter presents a wideband circulator leakage canceler (CLC) IC using a negative capacitance (NCAP). It enhances a conventional circulator with a wider bandwidth and high isolation for a full-duplex retro-directive short-range wireless power transfer (WPT) application. The proposed CLC consists of a directional coupler (DC), a hybrid coupler, and a low-pass filter network (LPFN) integrated with NCAP, which shows a considerable capability of suppressing the leakage power signal from transmitter (TX) output to receiver (RX) input. The CLC was fully implemented in the Samsung LR6LP 65-nm RF CMOS process and occupied the size of 2.1 mm $\\times0.89$ mm. The measurement of IC with a commercial circulator shows an average cancelation of 19 dB over the range of 225 MHz from 2.31 to 2.535 GHz. The input P1dB in band was measured at 16 dBm while the noise figure (NF) of antenna-receiver (ANT-RX) path increased by 5.2 dB at 2.5 GHz.","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1211-1214"},"PeriodicalIF":2.9000,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Microwave and Wireless Components Letters","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1109/LMWC.2022.3170590","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 1
Abstract
This letter presents a wideband circulator leakage canceler (CLC) IC using a negative capacitance (NCAP). It enhances a conventional circulator with a wider bandwidth and high isolation for a full-duplex retro-directive short-range wireless power transfer (WPT) application. The proposed CLC consists of a directional coupler (DC), a hybrid coupler, and a low-pass filter network (LPFN) integrated with NCAP, which shows a considerable capability of suppressing the leakage power signal from transmitter (TX) output to receiver (RX) input. The CLC was fully implemented in the Samsung LR6LP 65-nm RF CMOS process and occupied the size of 2.1 mm $\times0.89$ mm. The measurement of IC with a commercial circulator shows an average cancelation of 19 dB over the range of 225 MHz from 2.31 to 2.535 GHz. The input P1dB in band was measured at 16 dBm while the noise figure (NF) of antenna-receiver (ANT-RX) path increased by 5.2 dB at 2.5 GHz.
期刊介绍：
The IEEE Microwave and Wireless Components Letters (MWCL) publishes four-page papers (3 pages of text + up to 1 page of references) that focus on microwave theory, techniques and applications as they relate to components, devices, circuits, biological effects, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, medical and industrial activities. Microwave theory and techniques relates to electromagnetic waves in the frequency range of a few MHz and a THz; other spectral regions and wave types are included within the scope of the MWCL whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
