Reflected fields from twist reflector in twist reflector scanning antenna configuration

Polarization twist reflector antenna — A systematic design approach

“…Polarization twist antenna was explored by several investigators. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Complicated mode matching analysis for trans-reflector and twist-reflector designs were given in Reference [1]. Spectral iteration technique using integral equation approach was studied in Reference [2], which involved intensive numerical computations.…”

“…15 It is apparent that in designs 1-4 complicated analysis techniques with intensive numerical computations were involved. Relatively simpler analysis techniques with relatively easier computations were employed in References [5][6][7][8]. Use of frequency selective elements and meandering for twist reflector were conceived in References [9][10][11].…”

“…Polarization twist antenna was explored by several investigators 1–15 . Complicated mode matching analysis for trans‐reflector and twist‐reflector designs were given in Reference [1].…”

“…Relatively simpler analyses were conceived in References [5][6] which involved relatively less computations. Simpler transmission line model based formulations for twist reflector design were also used in References [7][8] where mainly cross-polarization suppression ratio with angle of incidence and frequency was demonstrated. Integral equation with Galerkin procedure and basis function was employed [9] for frequency selective structure based twist polarizer.…”

Design of the Shaped Cassegrain Antenna Considering the Excited Power Function

“…실제 사용되는 캐서그레인 안테나는 부 반사판의 가림 효과(blockage effect)를 없애주기 위해 스트립 라인을 이용한 편파변환기를 설계하는데 [4], [5] , 이때 설계되는 스트립라인의 두께는 0. …”