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A Ku-band low-loss stripline low-pass filter for LTCC modules with low-impedance lines to obtain plural transmission zeros

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5 Author(s)
Ohwada, T. ; Mitsubishi Electr. Corp., Kanagawa, Japan ; Ikematsu, H. ; Oh-hashi, H. ; Takagi, T.
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A Ku-band low temperature co-fired ceramic (LTCC) multi-layered stripline low-pass filter (LPF) is presented. By employing a low-impedance line as an inductive element in the resonator, plural transmission zeros can be obtained near passband. Therefore, the presented LPF realizes excellent attenuation characteristics despite a small number of resonators. The LPF has extremely low insertion loss and compact dimensions, an especially thin profile, and is suitable for RF-modules. An LPF with dimensions of 0.9 mm/spl times/0.9 mm/spl times/0.4 mm has been fabricated, and measured results show the validity of the proposed structure.

Published in:

Microwave Symposium Digest, 2002 IEEE MTT-S International  (Volume:3 )

Date of Conference:

2-7 June 2002