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A 52-dB Self-Interference Rejection Receiver using RF Code-Domain Signal Processing

机译:使用RF码域信号处理的52dB自干扰抑制接收器

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This paper presents a code-domain receiver (RX) for simultaneous transmit and receive (STAR) applications. The RX achieves 52 dB of transmitter self-interference (TX SI) rejection through the application of direct sequence spread spectrum (DSSS) techniques at the antenna. The rejection is achieved through a cascade of code notch (CN) and code pass (CP) filters operating at the same center frequency. The integrated RX is tunable from 0.25 GHz to 1.25 GHz with 39 dB of gain at 1 GHz. The RX is implemented in a 45-nm CMOS SOI process and occupies an area of 2.6 mm2 including the filters, a low noise amplifier (LNA), and baseband circuits.
机译:本文提出了一种用于同时发送和接收(STAR)应用的码域接收器(RX)。 RX通过在天线上应用直接序列扩频(DSSS)技术,实现了52 dB的发射机自干扰(TX SI)抑制。通过在相同中心频率下工作的级联码陷波(CN)和码通过(CP)滤波器来实现抑制。集成的R​​X可在0.25 GHz到1.25 GHz的范围内可调,在1 GHz时增益为39 dB。 RX采用45纳米CMOS SOI工艺实现,占地2.6毫米 2 包括滤波器,低噪声放大器(LNA)和基带电路。

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