유전체 마개와 덮개가 부착된 구형 도파관의 평면 배열 안테나의 복사패턴 계산

Calculation of Radiation Patterns of Planar Array Antennas of Rectangular Waveguides Loaded by Dielectric Plug and Sheath

The radiation pattern of a rectangular-grid array antenna consisted of rectangular waveguides is represented by multiplication of its element and array factors. Calculated radiation patterns for excitation of TES110T mode inside the waveguides suffer from the blindness at a particular direction on E-plane. Numerical simulations show that the blindness can be removed by inserting dielectric plug inside the waveguides or covering dielectric sheath in front of the waveguides.