Sun, 27 Jul 2008 07:47:06 BST CiteULike: dcastro's Hagerty http://www.citeulike.org/user/dcastro/author/Hagerty CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dcastro/article/2774720 <i>Microwave Symposium Digest, 2002 IEEE MTT-S International, Vol. 2 (2002), pp. 1317-1320.</i><br /><br />An X-band oscillating element can be achieved in compact form with class-E operation and high directivity. An annular ring is used both as the radiating element and microstrip feedback circuit for the class-E amplifier. A maximum conversion efficiency of the DC power consumption to radiated copolarized power is 55% at 10 GHz with maximum effective radiated power of 23.6 dBm and total radiated power of 15.5 dBm. This active antenna element is shown to be a good candidate for high aperture efficiency spatial power combining A 10 GHz integrated class-E oscillating annular ring element for high-efficiency transmitting arrays JA Hagerty Z Popovic doi:10.1109/MWSYM.2002.1011911 Microwave Symposium Digest, 2002 IEEE MTT-S International, Vol. 2 (2002), pp. 1317-1320. 2008-05-09T08:23:39-00:00 2002 Microwave Symposium Digest, 2002 IEEE MTT-S International 2 1317 1320 active antenna efficiency high integrated oscillator