Parallel connection multi-stage band-pass filter
First Claim
Patent Images
1. A parallel connection multi-stage band-pass filter comprising an input terminal and an output terminal for signals, and a plurality of resonators each provided with first and second ports;
- said resonators having respective resonant frequencies different from and close to each other;
said first port of each of said resonators being electrically connected to said input terminal through a first impedance matching means;
said second port of each of said resonators being electrically connected to said output terminal through a second impedance matching means;
wherein said first port of each of said resonators is electrically connected to said input terminal through said first impedance matching means by inductive coupling;
said second port of each of said resonators being electrically connected to said output terminal through said second impedance matching means by inductive coupling.
1 Assignment
0 Petitions
Accused Products
Abstract
A parallel connection multi-stage band-pass filter including an input terminal and an output terminal for signals, a plurality of resonators respectively having resonator frequencies different from and close to one another which are electrically connected in parallel to each other between said input and output terminals.
-
Citations
22 Claims
-
1. A parallel connection multi-stage band-pass filter comprising an input terminal and an output terminal for signals, and a plurality of resonators each provided with first and second ports;
-
said resonators having respective resonant frequencies different from and close to each other; said first port of each of said resonators being electrically connected to said input terminal through a first impedance matching means; said second port of each of said resonators being electrically connected to said output terminal through a second impedance matching means; wherein said first port of each of said resonators is electrically connected to said input terminal through said first impedance matching means by inductive coupling; said second port of each of said resonators being electrically connected to said output terminal through said second impedance matching means by inductive coupling. - View Dependent Claims (3, 4, 5, 7, 8, 9, 10, 15, 16, 17)
-
-
2. A parallel connection multi-stage band-pass filter comprising an input terminal and an output terminal for signals, and a plurality of resonators each provided with first and second ports;
-
said resonators having respective resonant frequencies different from and close to each other; said first port of each of said resonators being electrically connected to said input terminal through a first impedance matching means; said second port of each of said resonators being electrically connected to said output terminal through a second impedance matching means; wherein the respective resonators are dielectric resonators. - View Dependent Claims (6, 11, 12, 13, 14, 18, 19, 20, 21, 22)
-
Specification