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A Post-Wall Waveguide Matched Load with Thin-Film Resistor
Hiromitsu UCHIDA Masatoshi NAKAYAMA Akira INOUE Yoshihito HIRANO
IEICE TRANSACTIONS on Electronics
Publication Date: 2011/10/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Passive Devices and Circuits
waveguide, matched load, resistor,
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A matched load for post-wall waveguide (SIW; Substrate Integrated Waveguide) is presented. It consists of an electrically-shorted post-wall waveguide and a rectangular thin-film resistor sheet on the surface of the waveguide, resulting in a quite compact structure without three-dimensional bulky absorber as in conventional waveguide matched loads. A fabricated X-band matched load has achieved less than -20 dB reflection in more than 20% relative bandwidth.