US Patent No. 9,111,714

BACKWARD-WAVE OSCILLATOR IN COMMUNICATION SYSTEM


Patent No. 9,111,714
Issue Date August 18, 2015
Title Backward-wave Oscillator In Communication System
Inventorship Ju Yeon Hong, Daejeon (KR)
Young Jun Chong, Daejeon (KR)
Jeong Hae Lee, Seoul (KR)
Dong Jin Kim, Seoul (KR)
Assignee ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)

Claim of US Patent No. 9,111,714

1. A backward-wave oscillator in a communication system, comprising a waveguide formed of a metamaterial,
wherein a unit structure of the waveguide comprises:
a top plate;
a short-circuited stub;
a bottom plate separated at a predetermined gap from the top plate, and having the short-circuited stub formed in the center
thereof;

a first metal pillar connecting the top plate at a first port positioned on one surface based on the short-circuited stub
to the bottom plate at a second port positioned on the opposite surface of the first port based on the short-circuited stub;
and

a second metal pillar separated from the first metal pillar, and connecting the top plate at the second port to the bottom
plate at the first port.