Summary
International Symposium on Antennas and Propagation
2011
Session Number:FrP2
Session:
Number:FrP2-54
A broadband duplexer design for a single balanced mixer application
Young-Gon Kim, Il-Heung Kang, Sung-Kyun Kim, Kang Wook Kim,
pp.-
Publication Date:2011/10/25
Online ISSN:2188-5079
Summary:
A broadband contiguous duplexer for a broadband single balanced mixer is presented. The duplexer is designed by combination of singly terminated low and high pass filters. The fabricated duplexer performs from DC to 4.6 GHz for low pass channel and 4.6 GHz to 18 GHz for high pass channel. For broadband high pass filter, broadside-coupling line is used. For low pass filter, high impedance lines without bottom conductor of the substrate are realized to obtain high values of inductance. The fabricated duplexer shows that insertion loss for low pass channel is less than 1 dB and high pass channel is less than 3 dB. More than 10 dB return loss is obtained for overall operating frequencies.