Patent ID: 7719391

Claim:
A dielectric resonator circuit comprising: a housing; first, second, and third resonators positioned substantially in a row in a first direction within said housing with said second resonator positioned between said first and third resonators; said housing enclosing said first, second, and third resonators and further comprising a separating wall intermediate said first and third resonators in said first direction in order to inhibit coupling between said first and third resonators; and wherein said separating wall comprises a first end and a second end along a length thereof and wherein said wall defines an iris at said first end, said iris positioned to permit coupling between said first resonator and said second resonator and between said second resonator and said third resonator, said wall comprising a main wall portion positioned substantially between said first and third resonators and an extension wall portion at said first end that extends at a non-zero angle from said main wall portion of said separating wall.