Title :
Gain-enhanced distributed amplifier-based CRLH-leaky wave antenna for quasi-resonant power recycling scheme
Author :
Wu, Chung-Tse Michael ; Itoh, Tatsuo
Author_Institution :
Dept. of Electr. Eng., Univ. of California, Los Angeles, Los Angeles, CA, USA
Abstract :
A distributed amplifier combined with CRLH-leaky wave antennas (LWAs) for a new resonant type power recycling scheme is proposed. By connecting a closed loop to the LWA on the drain side of the distributed amplifier, we can obtain gain enhancement compared to the one directly terminated without the loop. Such enhancement fluctuates with respect to the frequency. At some specific frequencies, the enhancement reaches a maximum. The phenomenon will be explained theoretically and validated through the measurement and simulation in this paper.
Keywords :
distributed amplifiers; leaky wave antennas; CRLH-LWA; CRLH-leaky wave antenna; gain enhancement; gain-enhanced distributed amplifier; quasiresonant power recycling scheme; Frequency measurement; Gain measurement; Indexes; Matrices; Resonant frequency; Active antenna; CRLH-transmission lines; Distributed Amplifiers; Leaky wave antennas;
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972710
