具有码域混合波束成形功能的 4 元 Ka 波段相控阵接收器

IF 2.2 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE
Ziyi Lin;Haikun Jia;Chuanming Zhu;Wei Deng;Huabing Liao;Bao Shi;Lujie Hao;Xiangrong Huang;Baoyong Chi
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引用次数: 0

摘要

这封信介绍了一种采用 65 纳米 CMOS 技术、具有码域混合波束成形 (CDHBF) 功能的 4 元相控阵接收器。该接收器采用码分复用技术,在使用单一射频接口的同时充分保留了数字域的灵活性,从而降低了射频链的复杂性,减小了芯片面积,提高了能效。每个路径还集成了相位和振幅控制电路,以保持接收器作为传统 4 元相控阵使用的灵活性。相控阵和代码调制器可以打开或关闭,以便根据应用将这种结构重新配置为模拟波束形成器、混合波束形成器和数字波束形成器。我们设置了一个空中无线测量,并同时接收来自不同方向的两个数据流,并由拟议的接收器进行处理。在 CDHBF 模式下,100 Ms/s 和 200 Ms/s 数据流的测量 EVM 分别为 -22.7 和 -20.5 dB,无需任何数字域均衡。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A 4-Element Ka-Band Phased-Array Receiver With Code-Domain Hybrid Beamforming
This letter presents a 4-element phased-array receiver with code-domain hybrid beamforming (CDHBF) in 65-nm CMOS technology. Code-division multiplexing is used to fully preserve the flexibility in the digital domain while using a single RF interface, which reduces the RF chain complexity, reduces the chip area, and improves power efficiency. Phase and amplitude control circuits are also integrated into each path to keep the flexibility to use the receiver as a traditional 4-element phased-array. The phased-array and code modulator can be turned on or off to reconfigure this structure into an analog beamformer, hybrid beamformer, and digital beamformer according to applications. An over-the-air wireless measurement is set up and two streams from different directions are simultaneously received and processed by the proposed receiver. The measured EVMs in CDHBF mode are -22.7 and -20.5 dB for 100 and 200-Ms/s data streams, respectively, without any digital domain equalization.
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来源期刊
IEEE Solid-State Circuits Letters
IEEE Solid-State Circuits Letters Engineering-Electrical and Electronic Engineering
CiteScore
4.30
自引率
3.70%
发文量
52
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