Combined Antenna Systems for Assault Amphibian Use

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$476,872.00
Award Year:
1993
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
18221
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Astron Corp
470 Spring Park Place, Herndon, VA, 22070
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Ed Farren
(703) 471-0600
Business Contact:
() -
Research Institution:
n/a
Abstract
Monopole and dipole antennas have been determined to radiate most efficiently when the size of the antenna is proportional to the frequency being transmitted or received, i.e. one-quarter, one-half or one wavelength. As the operating frequency is varied from that ideal frequency nulls begin to develop which threaten the integrity of the communication link. Experience has shown that small excursions (+ 50% of the resonent frequency) can be achieved without degrading performance by use of matching devices. But, larger bandwidths such as 30 to 90 MHz are normally accommodated by active high impedence tuning devices and couplers. Experience has also shown that antennas which are located in close proximity to each other tend to limit each others performance unless electrical isolation on the order of 30 dB is achieved. Finally, antenna array performance is best achieved by reducing the potential for intra antenna reaction and complicity. This investigation will evaluate new low impedance passive broadbanding techniques which minimize array complexity, maximize intra antenna isolation to produce a low profile high performance vertical antenna array which supports two transceivers and operates in the 30 to 90 bandwidth.

* information listed above is at the time of submission.

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