Antennas formed using multilayer ceramic substrates

Details Antennas formed using multilayer ceramic substrates Antennas formed using multilayer ceramic substrates

1999-04-30

2000-11-28

Wong, Don

Communications: radio wave antennas

Antennas

Microstrip

343846, 343853, H01Q 138

Patent

active

061541761

ABSTRACT:
An array antenna includes a first ceramic layer and a second ceramic layer. A metal layer is disposed between the first and second ceramic layers. A plurality of radiating elements are mounted on the first ceramic layer, and a plurality of control circuits are mounted on the second ceramic layer. The control circuits are coupled to the radiating elements through a plurality of conductive vias which feed through the metal layer. The array antenna may also include a switch having a plurality of poles formed in the second ceramic layer and coupled to one of the radiating elements through one or more conductive vias. A plurality of phase delay elements may be coupled at a first end to a signal source and coupled at a second end to the respective plurality of poles of the switch to provide phase-delayed signals. A waveguide may also be formed within the ceramic layers. Conductive vias or coaxial transmission lines may be used to connect elements within the array antenna.

REFERENCES:
patent: 5309164 (1994-05-01), Dienes et al.
patent: 5315753 (1994-05-01), Jensen et al.
patent: 5646634 (1997-07-01), Bokhari et al.
patent: 5801660 (1998-09-01), Ohtsuka et al.
patent: 5903239 (1999-05-01), Takahashi et al.
patent: 5977915 (1999-11-01), Bergstedt et al.
patent: 5982256 (1999-11-01), Uchimura et al.

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