Scheduled System Maintenance:
On May 6th, single article purchases and IEEE account management will be unavailable from 8:00 AM - 5:00 PM ET (12:00 - 21:00 UTC). We apologize for the inconvenience.
By Topic

A millimeter wave beam shaping phased antenna array

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

7 Author(s)
Chia-Chan Chang ; Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA ; Cheng Liang ; Bihe Deng ; Domier, C.W.
more authors

A millimeter wave phased antenna array (PAA) serving as an electrically controlled "lens" is being developed for use in plasma imaging reflectometric diagnostics. To account for the rapid changes of the cutoff layer with plasma density variation, a true time delay (TTD) controlled phased antenna array (PAA) is being developed as an artificial lens with controllable focal length for launching the illumination beam of the microwave imaging reflectometry (NUR) system. Varactor diode loaded transmission lines, also called Nonlinear Delay Lines (NDL), are utilized in this electronic lens to control the time delays between each array element, and subsequently the wavefront of the probe beam. Proof of principle 1-D and 2-D PAAs have previously been demonstrated in beam steering systems. A 45 GHz monolithic NDL-based PAA is currently under development and will be installed on the National Spherical Torus Experiment (NSTX) in the near future.

Published in:

Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002. 2002 3rd International Conference on

Date of Conference:

17-19 Aug. 2002