By Topic

Accurate gain measurement for millimeter-wave horn and open-ended waveguide antennas

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Harima, K. ; EMC Lab., Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan

The pyramidal horn and open-ended waveguide (OEG) antennas are widely used on millimeter-wave bands as the standard or wideband antenna. These aperture antennas are normally calibrated in the far-field ranges by using the three-antenna method. However, even if the antenna separation distance satisfies the usual far-field criterion 2D2/λ (D: maximum aperture size), the gain of horn antennas is reduced by the order of 1 dB. The separation distance needed for accurate measurement, i.e., to obtain a gain reduction within 0.05 dB, is 32D2/λ or more. Newell et al. developed the extrapolation technique for reducing the distances required for conventional far-field measurements. As another approach for the same purpose, the efficacy of considering the phase center of an antenna in the three-antenna method has been shown. In this paper, we discuss the determination of the gain of millimeter-wave pyramidal horn and OEG antennas by considering the phase center, and evaluate experimentally the effect of measurement distance on the gain.

Published in:

Antennas and Propagation (ISAP), 2012 International Symposium on

Date of Conference:

Oct. 29 2012-Nov. 2 2012