Topology design optimization of dielectric substrates for bandwidth improvement of a patch antenna

Microstrip patch antennas with 3-dimensional substrates

“…The term 'textured dielectrics' was coined by Professor Volakis and his colleagues at Ohio University and refers to a substrate where the permittivity is varied as a function of location [24][25][26][27]. In this work, holes were cut into the substrate and different materials were manually inserted to create heterogeneous substrates.…”

Patch Antenna Shape Design Using the Genetic Algorithm

“…확률 과정을 이용하는 유전 알고리즘(genetic algorithm)은 최적 패치 형상을 얻 기 위한 유용한 방법으로 널리 사용되어 왔으며 [6], 설계 변수가 적은 최적화 문제에서는 민감도 에 기반한 최적설계가 효과적인 반면에, 설계 변 수가 많은 경우엔 유전 알고리즘도 효율적으로 사 용될 수 있다 [7]. 민감도에 기반한 최적 설계 방 법 중 하나인 밀도법은 이미 대역폭 향상을 위해 패치안테나의 유전체 기판 설계에 적용된 바 있다 [8]. …”

Antennas on quasi synthetic media

“…In previous work, it has been shown that a larger bandwidth can be achieved with an as yet unrealizable substrate with equal permittivity and permeability [1]. In addition, using textured dielectrics in which the permittivity of the substrate is mapped to the electric field intensity, such as with a patch antenna, has been shown to improve antenna performance [2][3][4][5]. Fig.…”