A dielectric loaded H-plane horn for millimeter waves based on LTCC technology

In this paper, a dielectric-loaded H-plane horn antenna implemented by a substrate integrated waveguide (SIW) was designed. The SIW horn antenna was fabricated in a single low-temperature co-fired ceramic (LTCC) substrate for easy fabrication and low cost, and a CPW to SIW transition was used to feed the horn. The dielectric slab loaded at the aperture of the horn have been utilized to optimize the bandwidth, narrow the beamwidth of radiation patterns in the H-plane and E-plane, and enhance the gain of the horn antenna. The simulation results show that over the operating bandwidth of 50GHz–57GHz, reflection coefficients of the antenna is less than −10dB and the gain is from 7.4dBi to 11.6dBi.