Larry A FriendGilbert, AZ
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Us Patents
Stripline Interdigital Band-Pass Filter
US Patent:
4020428, Apr 26, 1977
Filed:
Nov 14, 1975
Appl. No.:
5/631803
Inventors:
Larry O. Friend - Scottsdale AZ
John J. Lockwood - Tempe AZ
John J. Lockwood - Tempe AZ
Assignee:
Motorola, Inc. - Chicago IL
International Classification:
H01P 120
H01P 308
H01P 700
H01P 116
H01P 308
H01P 700
H01P 116
US Classification:
333 73S
Abstract:
There is disclosed a stripline interdigital filter fabricated in a self-supporting structure and including a plurality of parallel-coupled resonators. The parallel-coupled resonators are disposed between first and second ground planes, which first ground plane being removably mounted to the filter housing to facilitate interchanging of the first ground plane with another ground plane so dimensioned that the spacing between the parallel-coupled resonators and the first ground plane is varied a predetermined amount whereby the band-pass characteristics of the filter are varied.
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