A Flexible Phased-Array Architecture for Reception and Rapid Direction-of-Arrival Finding Utilizing Pseudo-Random Antenna Weight Modulation and Compressive Sampling
A Flexible Phased-Array Architecture for Reception and Rapid Direction-of-Arrival Finding Utilizing Pseudo-Random Antenna Weight Modulation and Compressive Sampling
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DOI：
10.1109/jssc.2019.2900200
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发表时间：
2019-03
影响因子：
5.4
通讯作者：
Matthew Bajor;Tanbir Haque;Guoxiang Han;Ciyuan Zhang;John Wright;P. Kinget
中科院分区：
文献类型：
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作者：
Matthew Bajor;Tanbir Haque;Guoxiang Han;Ciyuan Zhang;John Wright;P. Kinget
直接空-信息转换器（DSIC）将传统的延迟求和模拟常规波束成形（CBF）与压缩采样（CS）快速波达方向（DOA）探测统一到一个单一的、可重构的相控阵接收机架构中。当前基于CBF的DOA扫描仪需要详尽地搜索多个DOA角度，而DSIC能够通过伪随机调制其天线权重从所有可能的角度接收能量。DSIC射频专用集成电路（RF - ASIC）可在1至3 GHz频率范围内工作，采用65纳米CMOS工艺制造，包括八条直接转换路径，每条路径可提供32 dB的转换增益、3.3 dBm的带内输入三阶交调点（IIP3）和6.4 dB的噪声系数，同时在1.2 V电压下消耗19.8 mW功率。DSIC射频专用集成电路有两种工作模式，即CS - DOA模式和CBF -接收模式，并且能够在不到1微秒的时间内在两种模式之间切换。在CS - DOA模式下，DSIC射频专用集成电路在1微秒内以158纳焦的能耗探测到单个信号的DOA，这比类似的基于CBF的DOA扫描仪快4倍，能耗低1.5倍。
The direct space-to-information converter (DSIC) unifies conventional delay-and-sum analog conventional beamforming (CBF) with compressive sampling (CS) rapid direction-of-arrival (DOA) finding into a single, reconfigurable phased-array receiver architecture. Where current CBF-based DOA scanners need to exhaustively search through multiple DOA angles, the DSIC is able to receive energy from all possible angles by modulating its antenna weights psuedo-randomly. The DSIC RF-ASIC can operate from 1 to 3 GHz, was fabricated in 65-nm CMOS, and includes eight direct-conversion paths each delivering 32-dB conversion gain, 3.3-dBm in-band IIP3, and 6.4-dB NF while consuming 19.8 mW from 1.2 V. The DSIC RF-ASIC has two modes of operation, CS-DOA and CBF-Reception and can switch between them in less than $1~\mu \text{s}$ . In CS-DOA mode, the DSIC RF-ASIC finds the DOA of a single signal in $1~\mu \text{s}$ consuming 158 nJ which is 4 $\times $ faster and 1.5 $\times $ less energy than a comparable CBF-based DOA scanner.