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- W4352977364 abstract "Full-duplex (FD) enables high spectrum efficiency and dynamic spectrum accessing, although its application is restricted by significant self-interference. In this work, we present an integrated, single antenna, wideband FD self-interference suppression front-end solution, targeting for short-range wireless communication. Based on the characteristic of bi-directional signal transparency of N-phase passive mixer, a mixer-first active electrical balance self-interference suppression architecture is proposed. As no costly and space-consuming out-of-chip circulator is needed, compared with traditional single antenna suppression solutions, it is attractive for cost and area saving In addition, to alleviate the multi-path effect, a two-tap baseband self-interference suppression is adopted, which also helps broaden the self-interference suppression bandwidth. The fabricated FD front-end chip, employing 180nm CMOS process, has a noise figure (NF) of 8.6dB, and at the maximum TX power, the NF is degrade by 4.9dB. Test results show the achieved self-interference suppression depth is up to 52dB over 30MHz, with a much smaller antenna interface and chip size which is 0.75 mm <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$^{2}$</tex-math> </inline-formula> , compared with other dual and signal antenna solutions. The wireless communication function of the propose FD front-end has been verified and the operation carrier frequency range is 0.4-1.2GHz." @default.
- W4352977364 created "2023-03-23" @default.
- W4352977364 creator A5019721584 @default.
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- W4352977364 date "2023-09-01" @default.
- W4352977364 modified "2023-10-14" @default.
- W4352977364 title "Single Antenna and No Circulator Full-Duplex With 52 dB Wideband Self-Interference Suppression" @default.
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- W4352977364 doi "https://doi.org/10.1109/tcsi.2023.3247744" @default.
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