By Topic

Novel reduction technique of the non-linear distortion at the receiving point in the multi-beam active phased array antenna

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

5 Author(s)
Yamauchi, K. ; Mitsubishi Electr. Corp., Kanagawa, Japan ; Nakayama, M. ; Ikeda, Y. ; Isota, Y.
more authors

The reduction technique of the non-linear distortion (NLD) is investigated in the multi-beam active phased array antenna (APAA) with the modulated signals. In the multi-beam APAA, NLD is given by the sum of intermodulation distortion (IMD) and interference distortion (IFD). IMD is generated by amplifying the modulated signal nonlinearly. IFD is generated by interference between the carriers. In this paper, it makes clear analytically that the IMD-beams and the carrier-beams are radiated in the same direction, however, the IFD-beams are radiated in the different directions. So that, the multibeam APAA can reduce NLD at the receiving point by removing IFD. In the two-beam APAA with the modulated signals, radiation pattern is calculated. It can be confirmed that IFD-beams and carrier-beams are radiated in the different direction. NPR in the direction of the carrier-beams is improved of 1.3 dB. The improvement is shown to be independent of the output back-off of the power amplifiers. This reduction technique is especially effective in the saturation region where the predistortion linearizer cannot reduce the distortion.

Published in:

Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings  (Volume:1 )

Date of Conference:

4-7 Dec. 2005