Liquid Crystal-Based Optical Control of Phased Array Antennas

Nabeel A. Riza

doi:10.1109/50.202805

Liquid Crystal-Based Optical Control of Phased Array Antennas

Nabeel A. Riza

General Electric

Research output: Contribution to journal › Article › peer-review

Abstract

Nematic liquid crystal (NLC) technology-based optical systems for controlling phased array antennas are presented. These systems can provide low cost, high quality (> 6 bit), phase-based antenna control for very large phased arrays (e.g., 5000 elements). An experiment demonstrating NLC-based antenna phase control is performed, with 0-3π phase shift measured for a 60-MHz carrier. A novel time-multiplexed radar beam scanning approach is introduced to counter the slow response of the NLC’s, allowing fast 200 beams/s antenna scanning rates.

Original language	English
Article number	202805
Pages (from-to)	1974-1984
Number of pages	11
Journal	Journal of Lightwave Technology
Volume	10
Issue number	12
DOIs	https://doi.org/10.1109/50.202805
Publication status	Published - Dec 1992
Externally published	Yes

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10.1109/50.202805

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title = "Liquid Crystal-Based Optical Control of Phased Array Antennas",

abstract = "Nematic liquid crystal (NLC) technology-based optical systems for controlling phased array antennas are presented. These systems can provide low cost, high quality (> 6 bit), phase-based antenna control for very large phased arrays (e.g., 5000 elements). An experiment demonstrating NLC-based antenna phase control is performed, with 0-3π phase shift measured for a 60-MHz carrier. A novel time-multiplexed radar beam scanning approach is introduced to counter the slow response of the NLC{\textquoteright}s, allowing fast 200 beams/s antenna scanning rates.",

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year = "1992",

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N2 - Nematic liquid crystal (NLC) technology-based optical systems for controlling phased array antennas are presented. These systems can provide low cost, high quality (> 6 bit), phase-based antenna control for very large phased arrays (e.g., 5000 elements). An experiment demonstrating NLC-based antenna phase control is performed, with 0-3π phase shift measured for a 60-MHz carrier. A novel time-multiplexed radar beam scanning approach is introduced to counter the slow response of the NLC’s, allowing fast 200 beams/s antenna scanning rates.

AB - Nematic liquid crystal (NLC) technology-based optical systems for controlling phased array antennas are presented. These systems can provide low cost, high quality (> 6 bit), phase-based antenna control for very large phased arrays (e.g., 5000 elements). An experiment demonstrating NLC-based antenna phase control is performed, with 0-3π phase shift measured for a 60-MHz carrier. A novel time-multiplexed radar beam scanning approach is introduced to counter the slow response of the NLC’s, allowing fast 200 beams/s antenna scanning rates.

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DO - 10.1109/50.202805

M3 - Article

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SN - 0733-8724

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EP - 1984

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

IS - 12

M1 - 202805

ER -

Liquid Crystal-Based Optical Control of Phased Array Antennas

Abstract

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