A Wideband Circulator Leakage Canceler for Retro-Directive RF System

IF 2.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Microwave and Wireless Components Letters Pub Date : 2022-10-01 DOI:10.1109/LMWC.2022.3170590

T.‐B. Ngo, Quang-Huy Do, Sangwoog Yoon

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.

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一种用于反向射频系统的宽带环行器泄漏消除器

这封信提出了一个宽带环行器泄漏消除(CLC) IC使用负电容(NCAP)。它增强了传统的环行器，具有更宽的带宽和高隔离度，适用于全双工反向指令短距离无线电力传输(WPT)应用。所提出的CLC由一个定向耦合器(DC)、一个混合耦合器和一个集成了NCAP的低通滤波器网络(LPFN)组成，该网络显示出相当大的抑制从发射机(TX)输出到接收机(RX)输入的泄漏功率信号的能力。该CLC在三星LR6LP 65纳米RF CMOS工艺中完全实现，尺寸为2.1 mm × 0.89 mm。用商用环行器测量IC，在2.31至2.535 GHz的225 MHz范围内平均消除19 dB。在16 dBm频段测量输入P1dB，而天线-接收机(ANT-RX)路径的噪声系数(NF)在2.5 GHz频段增加了5.2 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Microwave and Wireless Components Letters 工程技术-工程：电子与电气

自引率

13.30%

发文量

376

审稿时长

3.0 months

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.