Title :
A 10 GHz integrated class-E oscillating annular ring element for high-efficiency transmitting arrays
Author :
Hagerty, J.A. ; Popovic, Z.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Abstract :
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.
Keywords :
active antenna arrays; antenna radiation patterns; feedback oscillators; microstrip antenna arrays; microwave oscillators; power combiners; switching circuits; transmitting antennas; 10 GHz; 55 percent; X-band oscillating element; active antenna element; annular ring; class-E amplifier; class-E operation; compact form; distributed oscillating elements; free-space power combining; high aperture efficiency spatial power combining; high directivity; high-efficiency transmitting arrays; microstrip feedback circuit; radiating element; switched mode; Antenna feeds; Aperture antennas; Energy consumption; FETs; Feedback circuits; Impedance; Microstrip; Oscillators; Polarization; Switches;
Conference_Titel :
Microwave Symposium Digest, 2002 IEEE MTT-S International
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-7239-5
DOI :
10.1109/MWSYM.2002.1011911
