Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters
Patent
1990-08-24
1991-08-13
LaRoche, Eugene R.
Wave transmission lines and networks
Coupling networks
Frequency domain filters utilizing only lumped parameters
333184, 333185, 361414, H03H 700
Patent
active
050399659
ABSTRACT:
A multilayer circuit board (200) providing a feedthrough filter having metallized via (234) having input and output ports (232, 226) which are coupled to metallized areas (206, 214). Each of the metallized areas (206, 214) being opposed by ground planes (202, 210, and 218) which are separated from the metallized areas (206, 214) by dielectric layers (204, 208, 212, and 216) forming a reactive coupling between the metallized areas (206, 214) and the ground planes (202, 210, and 218). The multilayer circuit board as employed in the present invention, may be advantageously utilized in a variety of applications where multilayer circuit boards require attenuation of unwanted RF signals.
REFERENCES:
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patent: 4864722 (1989-09-01), Lazzarini et al.
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patent: 4954877 (1990-09-01), Nakanishi et al.
Ham Seung
LaRoche Eugene R.
Motorola Inc.
Nichols Daniel K.
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