Title :
Thin-film LCP amplitude compensated long time delay circuit
Author :
Chen, Morgan J. ; Zhang, Zhaonian ; Pham, Anh-Vu H. ; Hyman, Daniel J.
Author_Institution :
Microwave Microsystems Laboratory, University of California at Davis, 95616, USA
Abstract :
We present the design and development of an amplitude compensated long time delay circuit (LTD) in multilayer liquid crystal polymer (LCP) films. The design is implemented with MEMS switches. An LTD is built on a thin-film multilayer stack to provide a variety of transmission lines to offer different attenuation characteristics for amplitude compensation. True time delay (TTD) components produce 0 ps, 200 ps, 400 ps, and 600 ps relative delays. This part is intended to work over wide frequency ranges from DC to 10 GHz. Insertion loss mismatch between delays is measured to be less than plusmn0.4 dB across the band.
Keywords :
delay circuits; liquid crystal polymers; microswitches; microwave circuits; multilayers; thin film circuits; transmission lines; MEMS switches; amplitude compensation; attenuation characteristics; insertion loss mismatch; long time delay circuit; multilayer liquid crystal polymer films; thin-film multilayer stack; time 200 ps; time 400 ps; time 600 ps; transmission lines; Attenuation; Delay effects; Distributed parameter circuits; Frequency; Insertion loss; Liquid crystal polymers; Microswitches; Nonhomogeneous media; Polymer films; Thin film circuits; Delay-lines; flexible structures; packaging; phase shifter;
Conference_Titel :
Microwave Symposium Digest, 2008 IEEE MTT-S International
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1780-3
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2008.4633123
