H - Electricity – 01 – P
Patent
H - Electricity
01
P
26/128, 333/68
H01P 1/205 (2006.01) H01P 11/00 (2006.01)
Patent
CA 1212432
- 16 - MICROWAVE CIRCUIT DEVICE AND METHOD FOR FABRICATION Abstract of the Disclosure Microwave devices are fabricated by a method wherein a block of dielectric material is conformed to the physical configuration of a required microwave device, and it is then coated with electrically conductive material. Portions of the coating material are removed from predetermined regions of the block to implement a predetermined microwave device. One microwave device fabricated in accordance with the foregoing method is shown, and comprises an interdigital bandpass filter in which the block is shaped and drilled with a line of parallel holes to define the physical configuration of an interdigital filter in which the interiorly-coated drilled holes comprise resonator rods within a microwave cavity formed by the exteriorly-coated remaining portions of the dielectric material block. Coating material is removed from end portions of the rods formed by the coated holes in order to fine-tune the filter to a desired center frequency in the band of operation.
457746
American Telephone And Telegraph Company
Kirby Eades Gale Baker
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