×

Dielectric filter, dielectric duplexer, and communication device

  • US 6,774,744 B1
  • Filed: 02/24/2000
  • Issued: 08/10/2004
  • Est. Priority Date: 02/25/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A dielectric filter, comprising:

  • a dielectric resonator having at least three resonant modes, including a conductive cavity, and a dielectric resonator arranged within said cavity; and

    an input/output coupling that couples to said dielectric resonator, wherein said input/output coupling couples to a resonant mode at a first stage, as well as to at least one resonant mode at an h-th stage (h=2n+1;

    where n is an integer) approximately in negative-phase with respect to the first stage, among the resonant modes of said dielectric resonator.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×