GLTRS--Glenn
TITLE AND SUBTITLE:
Suspended Patch Antenna Array With Electromagnetically Coupled Inverted Microstrip Feed

AUTHOR(S):
Rainee N. Simons

REPORT DATE:
May 2000

FUNDING NUMBERS:
WU-632-6E-51-00
NAS3-98008

PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES):
Dynacs Engineering Company, Inc.
2001 Aerospace Parkway
Brook Park, Ohio 44135

PERFORMING ORGANIZATION REPORT NUMBER:
E-12247

SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES):
National Aeronautics and Space Administration
John H. Glenn Research Center at Lewis Field
Cleveland, Ohio 44135-3191

REPORT TYPE AND DATES COVERED:
Final Contractor Report

SPONSORING/MONITORING AGENCY REPORT NUMBER:
NASA CR-2000-210069

SUPPLEMENTARY NOTES:
Prepared for the Sixth Ka Band Utilization Conference sponsored by the IIC-Istituto Internazionale delle Comunicazioni, Cleveland, Ohio, May 31-June 2, 2000. Rainee N. Simons, Dynacs Engineering Company, Inc., 2001 Aerospace Parkway, Brook Park, Ohio 44135. Project Manager, Dennis Vano, Systems Engineering Division, organization code 7830, (216) 433-2730.

ABSTRACT:
The paper demonstrates a four-element suspended patch antenna array, with a parasitic patch layer and an electromagnetically coupled inverted microstrip feed, for linear polarization at K-Band frequencies. This antenna has the following advantages over conventional microstrip antennas: First, the inverted microstrip has lower attenuation than conventional microstrip; hence, conductor loss associated with the antenna corporate feed is lower resulting in higher gain and efficiency. Second, conventional proximity coupled patch antennas require a substrate for the feed and a superstrate for the patch. However, the inverted microstrip fed patch antenna makes use of a single substrate, and hence, is lightweight and low cost. Third, electromagnetic coupling results in wider bandwidth. Details regarding the design and fabrication will be presented as well as measured results including return loss, radiation patterns and cross-polarization levels.

SUBJECT TERMS:
Suspended patch antenna; Inverted microstrip line; Array antenna; Suspended substrate stripline

NUMBER OF PAGES:
11

PDF AVAILABLE FROM URL:
2000/CR-2000-210069.pdf
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