Patent ID: 6683516
Filing Date: 2004-01-27
Classification: H01P,H01Q,H05K

Abstract:
A tunable cavity for a cavity antenna comprising:a first rectangular slab of dielectric material lying in a first plane, a second rectangular slab of dielectric material, lying in a second plane substantially perpendicular to said first plane; a third rectangular slab of dielectric material lying in a third plane substantially parallel to said first plane and perpendicular to said second plane; a fourth rectangular slab of dielectric material lying in a fourth plane substantially parallel to said second plane and perpendicular to said first and third planes, said first, second, third and fourth rectangular slabs defining a cavity; and at least one pair of electrodes for applying a controllable voltage is disposed across at least one of said first, second, third or fourth dielectric materials, thereby controlling a dielectric constant of said at least one of said first, second, third and fourth dielectric materials.