RF Cancellation of Coupled Transmit Signal and Noise in STAR across 1 GHz Bandwidth
RF Cancellation of Coupled Transmit Signal and Noise in STAR across 1 GHz Bandwidth
复制标题
1 GHz 带宽内 STAR 耦合发射信号和噪声的射频消除
DOI：
--
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
J. Volakis
中科院分区：
文献类型：
--
作者：
S. Venkatakrishnan;Alexander Hovsepian;E. Alwan;J. Volakis
频谱可用性的不断减少导致了频谱分配和重用的创新方法的发展。同时发送和接收（STAR）方案是一种最有前途的频谱处理方法。实现STAR的一个主要挑战是将高功率发射（Tx）信号耦合到同一位置的接收器中，从而导致工作频率中的强信号干扰。此外，对于这种直接干扰，还需要消除谐波和传输噪声。总的来说，要成功实现STAR，必须抑制3个信号分量，即1)Tx信号，2)Tx信号谐波和3)Tx噪声。在本文中，我们提出了使用天线和滤波器在1ghz范围内对这些组件进行射频抵消的设计。此外，我们还展示了阵列环境中Tx噪声耦合的影响以及抑制它的方法。
The shrinking spectrum availability has led to the development of creative approaches for spectrum allocation and reuse. A most promising approach for spectrum is the simultaneous transmit and receive (STAR) scheme. A major challenge in realizing STAR is the coupling of high power transmit (Tx) signals into the co-located receiver, leading to strong signal interference in the operating frequency. In addition, to this direct interference, cancellation of harmonics and the transmit noise is also necessary. Overall, for successful STAR realization, 3 signal components must be suppressed, namely 1)Tx signal, 2)Tx signal harmonics, and 3)Tx noise. In this paper, we present the design of RF cancellation of these components across 1 GHz using antenna and filters. In addition, we also show the effect of Tx noise coupling in an array environment and means to suppress it.