IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
The 40GHz band duplexer with E-plane planar circuit
Toshihisa KameiYozo UtsumiNguyen Thanh
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2007 Volume 4 Issue 17 Pages 549-554


We report on the design and construction of a prototype band pass filter using inductive-strips (E-plane planar circuits) based on electromagnetic-field simulations. We also report on the construction and characteristics of a prototype duplexer consisting of two band-pass filters-one each for the uplink and downlink-and a Y-shaped branch circuit. As a result of the experiment of duplexer, an insertion loss of about 3.1dB in a bandwidth of 195MHz for the uplink filter and an out-of-band attenuation of 50dB at 41.47GHz could be achieved. And an insertion loss of about 3.0dB in a bandwidth of 763MHz for the downlink filter and an out-of-band attenuation for the downlink filter of 59dB at 42.09GHz could be achieved.

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© 2007 by The Institute of Electronics, Information and Communication Engineers
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