A High-Isolation Duplexer With Mismatched Load Impedance for Integrated Sensing and Communication

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

IEEE Microwave and Wireless Components Letters Pub Date : 2022-09-01 DOI:10.1109/LMWC.2022.3166259

Jingyun Lu, Lina Ma, Changzhan Gu, Junfa Mao

引用次数: 0

Abstract

A novel 2.4 GHz passive duplexer with mismatched load impedance and high isolation between transmitting (TX) and receiving (RX) is proposed for integrated sensing and communication (ISAC) applications. By adjusting the impedance of a canceling tuner located between the quadrature coupler and the antenna, the load impedance of the coupler is tactfully mismatched, which reflects a portion of the TX power with the desired amplitude and phase to cancel out the TX/RX leakage to achieve a high TX/RX isolation of >56 dB. In the meantime, by leveraging the quadrature nature of the quadrature coupler, the proposed duplexer makes it possible for the transceiver to operate at dual circularly polarized (CP) mode, which is beneficial for the polarization requirement of ISAC. The proposed duplexer is fully characterized and evaluated in the custom-designed communication and radar sensing systems, and the simulation and experimental results demonstrate the feasibility for ISAC applications.

查看原文本刊更多论文

用于集成传感和通信的负载阻抗不匹配的高隔离双工器

针对集成传感与通信（ISAC）应用，提出了一种新型的2.4GHz无源双工器，该双工器具有不匹配的负载阻抗和发射（TX）与接收（RX）之间的高隔离度。通过调整位于正交耦合器和天线之间的抵消调谐器的阻抗，耦合器的负载阻抗被巧妙地失配，这反映了具有期望幅度和相位的TX功率的一部分，以抵消TX/RX泄漏，从而实现＞56dB的高TX/RX隔离。同时，通过利用正交耦合器的正交特性，所提出的双工器使收发器能够在双圆偏振（CP）模式下工作，这有利于ISAC的偏振要求。所提出的双工器在定制设计的通信和雷达传感系统中得到了充分的表征和评估，仿真和实验结果证明了ISAC应用的可行性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.