A Multi-Channel Multi-Bit Programmable Photonic Beamformer Based on Cascaded DWDM

被引：14

作者：

Yu, Anliang ^{[1
]}

Zou, Weiwen ^{[1
]}

Li, Shuguang ^{[2
]}

Chen, Jianping ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Elect Engn, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China

[2] Shanghai Aerosp Elect Technol Inst, Shanghai 201109, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2014年 / 6卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Microwave photonics; photonic beamformer; true-time delay; dense wavelength division multiplexer; radiation pattern; phased array antenna; TRUE-TIME-DELAY; FIBER;

D O I：

10.1109/JPHOT.2014.2344007

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose and experimentally demonstrate a novel multi-channel multi-bit programmable photonic beamformer, which consists of multiple parallel photonic true-time delay (PTTD) subnetworks based on cascaded DWDMs. Each PTTD subnetwork can provide multi-bit true-time delays (TTDs) for a multi-channel modulated RF signal of a phased array antenna (PAA) and operate over a wide RF range from 10 MHz to 12 GHz. The RF signal is modulated to a spectrally separated laser array combined by a DWDM to form a multi-channel spatially separated PAA. The multi-bit TTDs for scanning PAA angles are rapidly programmed by means of a control circuit of optical switches in the PTTD subnetwork. By using an optical splitter, multiple parallel PTTD subnetworks can be topologically configured out for a PAA with a large number of elements. The obtained radiation patterns demonstrate that the proof-of-concept experimental result agrees well with the theoretical analysis, verifying the feasibility of the proposed photonic beamformer.

引用

页数：10

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