An experimental technique for measuring the unloaded Q of resonant antenna structures

Author

Weiss, Steven J.

Author_Institution

US Army Res. Lab., Adelphi, MD, USA

Volume

3B

fYear

2005

fDate

3-8 July 2005

Firstpage

63

Abstract

The measurement technique places a resonant antenna structure; such as a patch or dielectric resonator antenna on a large reflecting plane. Two auxiliary antennas are employed in the measurement process. Antenna number 1 acts as a transmitting antenna and is oriented at an angle of approximately 45 degrees with respect to the x-y plane. Antenna number 2 acts as a receiving antenna and is oriented along the z-direction normal to the ground plane and is placed directly above the patch antenna. This orientation places it in a near minimum of the specular beam. Both antennas are properly polarized with respect to the desired radiation field of the patch antenna.

Keywords

Q-factor measurement; antenna radiation patterns; antenna testing; dielectric resonator antennas; electromagnetic wave polarisation; electromagnetic wave reflection; electromagnetic wave scattering; microstrip antennas; receiving antennas; transmitting antennas; auxiliary antennas; dielectric resonator antenna; large reflecting plane; patch; polarization; radiation field; receiving antenna; resonant antenna structures; transmitting antenna; unloaded Q measurement; Antenna measurements; Dielectric measurements; Dielectric resonator antennas; Measurement techniques; Patch antennas; Q measurement; Receiving antennas; Reflector antennas; Resonance; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1552432

Filename

1552432