Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Acousto-optic liquid-crystal analog beam former for phased-array antennas

Not Accessible

Your library or personal account may give you access

Abstract

A compact phased-array antenna acousto-optic beam former with element-level analog phase (0–2π) and amplitude control using nematic-liquid-crystal display-type technology is experimentally demonstrated. Measurements indicate >6-bit phase control and 52.6 dB of amplitude-attenuation control. High-quality error calibration and antenna sidelobe-levelcontrol is possible with this low-control-power analog beam former. Optical system options using rf Bragg cells or wideband Bragg cells are discussed, with the rf design being the current preferred approach. Transmit–receive beam forming based on frequency upconversion–downconversion by electronic mixing is introduced for the rf Bragg-cell beam former, and comparisons with digital beam forming are highlighted. A millimeter-wave signal generation and control optical architecture is described.

© 1994 Optical Society of America

Full Article  |  PDF Article
More Like This
Lithium niobate guided-wave beam former for steering phased-array antennas

Mario N. Armenise, Vittorio M. N. Passaro, and Giuseppe Noviello
Appl. Opt. 33(26) 6194-6209 (1994)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (17)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved