Theoretical Bounds of the Self-Interference Cancellation-Bandwidth Integral in Full Duplex RF Front Ends

Dror Regev, Itamar Melamed, Nimrod Ginzberg, Emanuel Cohen

פרסום מחקרי: פרק בספר / בדוח / בכנספרסום בספר כנסביקורת עמיתים

תקציר

This paper studies the behavior of lumped self-interference cancellation (SIC) filters in simultaneous transmit-receive (STR) RF front ends. The crux that enables a different approach in this work for finding an optimal network solution is converting the SIC circuit design flow into an equivalent impedance-matching problem. As a result, we analyze a reflective SIC filter that complies with electric-balance duplexers utilizing known techniques. Bode, Fano, Matthaei, and others studied lumped network theory considerations and devised methodical steps for maximizing the impedance-matching bandwidth for reactive loads. Accordingly, a systematic approach that considers the analysis of the SIC-Bandwidth mutual relationship, and the optimal lumped networks, is detailed in this work. We indicate that the Chebyshev band-pass filter can provide optimal and lossless SIC filter performance, which is crucial for the overall STR performance. The realistic RF front-end in this work, which includes a simulated quadrature hybrid, and a measured Wi-Fi antenna with VSWR of 3:1, achieves > 40 dB of TX-RX isolation over 200 MHz around 5.5 GHz, utilizing a second order filter that employs only two realizable inductors.

שפה מקוריתאנגלית
כותר פרסום המארחProceedings of the 2023 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2023
מסת"ב (אלקטרוני)9798350338805
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - 19 אפר׳ 2023
אירוע2023 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2023 - Waco, ארצות הברית
משך הזמן: 19 אפר׳ 202320 אפר׳ 2023

סדרות פרסומים

שם2023 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)

כנס

כנס2023 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2023
מדינה/אזורארצות הברית
עירWaco
תקופה19/04/2320/04/23

ASJC Scopus subject areas

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  • ???subjectarea.asjc.2200.2208???
  • ???subjectarea.asjc.1700.1705???

טביעת אצבע

להלן מוצגים תחומי המחקר של הפרסום 'Theoretical Bounds of the Self-Interference Cancellation-Bandwidth Integral in Full Duplex RF Front Ends'. יחד הם יוצרים טביעת אצבע ייחודית.

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