D Band (110-150) GHz Radial Line Filter for Millimeter-wave Devices

Abstract

Theoretical and experimental performance of a millimetre-wave radial line filter has been studied using air as dielectrics. The results are found to be in good agreement with an error of less than 1.3 %. The filter has also been tested in D-band InP Gunn oscillator and the 2nd harmonic power of more than 3 mW is achieved at 141 GHz.