Claims
- 1. An ultra-wideband RF radiator, comprising:
- a photoconductive dielectric substrate having an upper and a lower surface, each said upper and lower surface having an outer annular region and a center region adjacent thereto;
- a ground plane electrode positioned on said lower surface of said photoconductive dielectric substrate substantially toward said outer annular region of said lower surface; and
- a top surface electrode positioned on said upper surface of said photoconductive substrate, said top surface electrode having an energy storage region and an energy radiation region, said energy storage region positioned substantially toward said outer annular region of said top surface directly above said ground plane electrode, said energy radiation region positioned substantially toward said center of said top surface such that no ground plane lies directly beneath said energy radiation region;
- said energy storage region of said top surface electrode having a recessed region exposing a predetermined portion of said upper surface of said photoconductive substrate to form a bulk photoconductive switch in said recessed region so that said photoconductive switch electrically shorts said energy storage region of said top surface electrode to said ground plane electrode upon the application of a predetermined type of light energy such that a pulse of nanosecond pulsewidth dimension is radiated from said energy radiation region of said top surface electrode.
- 2. The ultra wideband RF radiator of claim 1 wherein said top surface electrode is comprised of a plurality of metallic arms.
- 3. The ultra wideband RF radiator of claim 2 wherein said plurality of metallic arms are have a spiral antenna portion in said energy radiation region and a charging pad portion in said energy storage region.
- 4. The ultra wideband RF radiator of claim 1 wherein said photoconductive dielectric substrate is comprised of GaAs.
NOTICE OF CONTINUATION
This application is a continuation-in-part of application Ser. No. 08/109,541, entitled "Photon Triggered Ultra-Wideband Radiator with Charged Reservoir," by inventors Anderson H. Kim and Leo D. DiDomenico, Attorney Docket No. CECOM 4804, filed Aug. 19, 1993, now abandoned.
GOVERNMENT INTEREST
The invention described herein may be manufactured, used, and licensed by or for the Government of the United States of America for governmental services without the payment to us of any royalty thereon.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
5075331 |
Mar 1992 |
JPX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
109541 |
Aug 1993 |
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