Dielectric filter transmission-reception sharing unit and communication device

A dielectric filter comprising:

• a dielectric plate;
• a first electrode formed on a first main surface of the dielectric plate, the first electrode having a first opening;
• a second electrode formed on a second main surface of the dielectric plate, the second electrode having a second opening opposing said first opening;
• and
• signal input being coupled to said resonator;
• signal output being coupled to said resonator;
• wherein the signal input means and the signal output means are disposed for coupling with the dielectric resonators to input and output signals;
• and
• wherein at least one of the signal input means and the signal output means is formed on the dielectric plate as a linear conductor for coupling with the dielectric resonator, which is coupled with a particular part of the linear conductor so as to give band elimination filter characteristics to the linear conductor.

A dielectric filter comprising:

• a dielectric plate;
• a first electrode formed on a first main surface of the dielectric plate, the first electrode having a first opening;
• a second electrode formed on a second main surface of the dielectric plate, the second electrode having a second opening opposed to said first opening;
• a signal input being coupled to said resonator;
• a signal output being coupled to said resonator;
• wherein the signal input means and the signal output means are disposed for coupling with the dielectric resonators to input and output signals;
• wherein one of the signal input means and the signal output means is formed on the dielectric plate as a linear conductor for coupling with the dielectric resonator and forming a low-band pass filter circuit;
• and
• wherein the other one of the signal input means and the signal output means is formed on the dielectric plate as a linear conductor for coupling with the dielectric resonator, which is coupled with a particular part of the linear conductor so as to give band elimination filter characteristics to the linear conductor.