A Flexible Phased-Array Architecture for Reception and Rapid Direction-of-Arrival Finding Utilizing Pseudo-Random Antenna Weight Modulation and Compressive Sampling
| Autor: | Peter R. Kinget, Guoxiang Han, Tanbir Haque, Ciyuan Zhang, Matthew Bajor, John Wright |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Beamforming Phased array 020208 electrical & electronic engineering Direction of arrival 02 engineering and technology Topology Compressed sensing CMOS Modulation 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Antenna (radio) Energy (signal processing) |
| Zdroj: | IEEE Journal of Solid-State Circuits. 54:1315-1328 |
| ISSN: | 1558-173X 0018-9200 |
| DOI: | 10.1109/jssc.2019.2900200 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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