Elevation Plane Beam Scanning of a Novel Parasitic Array Radiator Antenna for 1900 MHz Mobile Handheld Terminals

One- and Two-Dimensional Beam-Switching Antenna for Millimeter-Wave MIMO Applications

“…1 that the position of the dipole antenna determines the scan angle in both azimuth and elevation planes since the movement of antenna changes the effective path length of each ray over its radiating aperture. Better understanding of the mechanism of this phenomenon can be obtained by calculating the array factor as described in [21]. The dipole antenna is considered to be a quasi TE source and the polarization of the E-field is along the azimuth plane.…”

Energy efficient switched parasitic array antenna for 5G networks and IoT

“…6 shows anechoic chamber result for θ=90 one can observe small elevation form desired x-y axis because of ground skirt [17].In simulations elevation angle of 85 0 is observed. Traditional ESPAR antenna and switched parasiric array antenna have all cylindrical elements, including the active element [3], [4]. We have made center element conical instead of cylindrical.…”

“…Design of parastic array radiator antennas is discussed in [3], [4] in which there is a center active element surrounded by a circular array of passive elements, where each passive element is loaded with a specific reactance. ESPAR antennas are smaller in size as compared to phase array antennas because elements have to be placed at a quarter of wavelength or less distance from each other for effective mutual coupling.…”

“…Similarly diversity gain can also be achieved by using smart antennas. In particular, we can transmit the same signal in multiple directions through directional beams, such that they experience different propagation channels [4]. Our proposed antenna is more suited for MIMO applications compared to previously designed model because of its higher gain and improved bandwidth efficiency.…”

Design and Performance Evaluation of M×M MIMO Transmission in ESPAR Antenna

“…ESPAR 안테나에 대한 기존의 연구들은 효율적인 빔 포밍을 통한 다이버시티 이득을 얻거나 [7,8] , 간섭신호 를 효과적으로 Nulling 시킬 수 있는지에 대한 연구가 주로 이루어 졌다 [9] . 참고 논문 [10] 에서는 단일 RF 체인 구조를 가지는 ESPAR 안테나를 사용한 BS-MIMO 시스템을 제안 하였다.…”