Title:
WIDEEBAND MICROWAVE BIAS NETWORK
Document Type and Number:
Japanese Patent JPS5238864
Kind Code:
A
Abstract:
For supplying a bias (modulation) signal, either AC or DC, to a microwave circuit, a network consisting of a low pass filter is provided which presents a high isolating impedance to an extremely wide bandwidth of microwave frequencies, while allowing low frequency bias or modulating signals to be supplied to the microwave circuit without significant attenuation. The network consists of two helical inductors, one within the other, plus a bypass capacitor. The inner small inductor presents a high, non-resonant impedance to high microwave frequencies and the outer, larger inductor presents a high impedance to lower microwave frequencies. The bypass capacitor cooperates with the outer inductor to complete the filter circuit for the lower microwave frequencies. The smaller inductor's proximity to and within the larger inductor provides a distributed shunt capacitance to ground so as to terminate the filter for the higher microwave frequencies at the smaller inductor.
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Inventors:
TOMASU JIERARUDO MAKUSON JIYUN
JIEIMUZU FURANSHISU REINORUZU
JIEIMUZU FURANSHISU REINORUZU
Application Number:
JP10588676A
Publication Date:
March 25, 1977
Filing Date:
September 06, 1976
Export Citation:
Assignee:
VARIAN ASSOCIATES
International Classes:
H03C7/02; H01P1/20; H03H7/01; (IPC1-7): H01P1/20; H03C7/02; H03H7/04; H04B15/00; H05K9/00