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US 7,009,470 B2Granted
Waveguide-type dielectric filter
AssigneeToko, Inc.
InventorsYukikazu Yatabe, Hiroshi Kojima, Hiroyuki Katou
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AssigneeToko, Inc.
InventorsYukikazu Yatabe, Hiroshi Kojima, Hiroyuki Katou
Estimating the term…
Disclosed is a waveguide-type dielectric filter, which comprises a dielectric block, a plurality of resonators formed in the dielectric block, and a coupling portion for adjusting the coupling between the adjacent resonators. The dielectric block includes a pair of dielectric substrates which are divided in the arranging direction of the resonators and joined together through joint surfaces thereof, and a slot formed between the joint surfaces. The slot defines a through-hole severing as the coupling portion between the adjacent resonators. The slot may be formed in each of the joint surfaces or may be formed in only one of the joint surfaces. The above dielectric filter may include input and output sections, and a conductive film may be formed between the joint surfaces to provide a coupling portion of the input or output section. The present invention can provide a waveguide-type dielectric filter capable of being readily produced without causing any problem of mechanical strength.
A waveguide-type dielectric filter comprising a dielectric block elongated along a longitudinal axis, a plurality of waveguide resonators formed in said dielectric block and sequentially located one after another along the longitudinal axis, and a coupling portion for adjustably coupling adjacent resonators to each other,
Dependencies are inferred from the claim text.