Demonstration of a wide-band fiber-optic nulling system for array antennas

Paul J. Matthews; Pao Lo Liu; John B. Medberry; Michael Y. Frankel; Ronald D. Esman

doi:10.1109/22.775474

Demonstration of a wide-band fiber-optic nulling system for array antennas

Paul J. Matthews
, Pao Lo Liu
, John B. Medberry
, Michael Y. Frankel
, Ronald D. Esman

Department of Electrical Engineering

Naval Research Laboratory

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

15 Scopus citations

Abstract

A novel technique for forming and steering squintfree wide-band nulls in the far-field pattern of an ultrawideband array antenna is presented. The nulling system relies upon a fiber-optic dispersive prism tapped delay-line microwave filter to generate the appropriate nulling waveform. The nullforming architecture was integrated with a wide-band fiberoptic dispersive prism true-time-delay transmit beamformer for demonstration in an anechoic chamber. Measurements show null depths on the order of 15 dB over the 4-18-GHz bandwidth of the system for various steering angles. The demonstrated architecture may be used for simultaneous wide-band beamforming, sidelobe reduction, and jammer suppression.

Original language	English
Pages (from-to)	1327-1331
Number of pages	5
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	47
Issue number	7 PART 2
DOIs	https://doi.org/10.1109/22.775474
State	Published - 1999

Keywords

Antenna arrays
Array signal processing
Opticalfiber dispersion

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10.1109/22.775474

Cite this

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title = "Demonstration of a wide-band fiber-optic nulling system for array antennas",

abstract = "A novel technique for forming and steering squintfree wide-band nulls in the far-field pattern of an ultrawideband array antenna is presented. The nulling system relies upon a fiber-optic dispersive prism tapped delay-line microwave filter to generate the appropriate nulling waveform. The nullforming architecture was integrated with a wide-band fiberoptic dispersive prism true-time-delay transmit beamformer for demonstration in an anechoic chamber. Measurements show null depths on the order of 15 dB over the 4-18-GHz bandwidth of the system for various steering angles. The demonstrated architecture may be used for simultaneous wide-band beamforming, sidelobe reduction, and jammer suppression.",

keywords = "Antenna arrays, Array signal processing, Opticalfiber dispersion",

author = "Matthews, \{Paul J.\} and Liu, \{Pao Lo\} and Medberry, \{John B.\} and Frankel, \{Michael Y.\} and Esman, \{Ronald D.\}",

year = "1999",

doi = "10.1109/22.775474",

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journal = "IEEE Transactions on Microwave Theory and Techniques",

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AU - Matthews, Paul J.

AU - Liu, Pao Lo

AU - Medberry, John B.

AU - Frankel, Michael Y.

AU - Esman, Ronald D.

PY - 1999

Y1 - 1999

N2 - A novel technique for forming and steering squintfree wide-band nulls in the far-field pattern of an ultrawideband array antenna is presented. The nulling system relies upon a fiber-optic dispersive prism tapped delay-line microwave filter to generate the appropriate nulling waveform. The nullforming architecture was integrated with a wide-band fiberoptic dispersive prism true-time-delay transmit beamformer for demonstration in an anechoic chamber. Measurements show null depths on the order of 15 dB over the 4-18-GHz bandwidth of the system for various steering angles. The demonstrated architecture may be used for simultaneous wide-band beamforming, sidelobe reduction, and jammer suppression.

AB - A novel technique for forming and steering squintfree wide-band nulls in the far-field pattern of an ultrawideband array antenna is presented. The nulling system relies upon a fiber-optic dispersive prism tapped delay-line microwave filter to generate the appropriate nulling waveform. The nullforming architecture was integrated with a wide-band fiberoptic dispersive prism true-time-delay transmit beamformer for demonstration in an anechoic chamber. Measurements show null depths on the order of 15 dB over the 4-18-GHz bandwidth of the system for various steering angles. The demonstrated architecture may be used for simultaneous wide-band beamforming, sidelobe reduction, and jammer suppression.

KW - Antenna arrays

KW - Array signal processing

KW - Opticalfiber dispersion

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JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 7 PART 2

ER -

Demonstration of a wide-band fiber-optic nulling system for array antennas

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Keywords

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