Beam pattern reconfigurable circularly polarized transmitarray antenna by rearrangement of sources

Lee, Jae‐Gon; Kwon, Taek-Sun; Lee, Jeong‐Hae

doi:10.1002/mop.31657

Cited by 11 publications

(8 citation statements)

References 20 publications

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“…For reconfiguring the antenna pattern, different methods are employed. Such as using the PIN diodes and choosing the width and length of the antenna, antenna based on passive metasurface and finely control the positions and phase difference of the source the beam steering angle, by switching the feeding direction of the series‐fed array antenna, employing reactive‐load switching for a planar center‐loaded linear Yagi dipole array, etc.…”

Section: Antenna Configurationmentioning

confidence: 99%

Monopole‐like and semi‐directional reconfigurable pattern antenna for wireless body area network applications

Mohamadzade

Simorangkir

Gharaei

et al. 2019

Micro & Optical Tech Letters

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A simple, low profile and pattern reconfigurable antenna with a full-ground plane is presented for use in wireless body area networks at 5.8 GHz ISM band. The antenna consists of a probe-fed circular patch, and a parasitic ring surrounding it. The ring is loaded with a rectangular slot on each side of the patch, and two PIN diodes are added in the center of each slot. With all the diodes in on-state, the antenna presents monopole-like radiation patterns with the gain of 4.2 dBi for maximum coverage on the body, whereas the pattern of the antenna can be directed to AE15 with an increased gain of 2.9 dBi, by turning off each diode for the semi-directional patterns states. Measured results of the fabricated prototype antenna show good agreement with numerical results obtained using Ansys HFSS. K E Y W O R D S circular patch antenna, monopole-like pattern, pattern reconfigurable antenna, wireless body area networks

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Section: Antenna Configurationmentioning

confidence: 99%

Monopole‐like and semi‐directional reconfigurable pattern antenna for wireless body area network applications

Mohamadzade

Simorangkir

Gharaei

et al. 2019

Micro & Optical Tech Letters

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“…The latter method structurally changes the wavefront shape of the source antenna electrically or mechanically and has the advantage of structurally fixing the TA. However, there is a disadvantage of a large motor for arrays as mentioned in [44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Recent Developments and Challenges on Beam Steering Characteristics of Reconfigurable Transmitarray Antennas

et al. 2022

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This paper highlights recent developments and challenges on beam steering characteristics of reconfigurable transmitarray antennas. It introduces the operating principle of beam forming/beam steering high gain transmitarray antennas to enable the user to opt for economical and high performance solutions. A transmitarray antenna typically consists of a source antenna and a phase transformation structure. The incident waves generated from the source antenna is tilted using the phase transformation structure in a desired direction to steer the beam. Moreover, the phase transformation structure alters the incident wavefront to a plane wavefront using phase change characteristics. In order to steer a beam to a specific desired angle, it can be divided into two methods. There is a method of applying a transmitarray with a variable transmission phase change or a method of changing the shape of the wavefront of the source antenna. This type of beam forming/beam steering high gain antenna has been mainly studied from the point of view of high efficiency, low profile, and low cost. Several solutions of transmitarray unit cells have been presented in the literature, using PIN diodes, varactors, MEMS switches, and microfluids enable electronics to realize reconfigurable characteristics of transmitarray antennas. This paper analyzes the characteristics of various beam steering high gain reconfigurable transmitarrays (RTA) and highlights the future opportunities and challenges of the structure design for transmitarray antennas. This paper also highlights the challenges and gaps in terahertz and optical frequencies related to future work due to the structure complexity and lack of components’ availability. Moreover, the challenges and limitations related to multi-bit structures and dual-band requirements are presented.

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“…하지만 구현의 복잡도 나 능동 소자의 추가 손실로 인하여 투과 안테나의 전체 적인 무선성능 저하가 발생할 수 있는 단점이 있다. 후자 의 방법은 구조적으로 소스 안테나의 파면 형상을 전기 적 또는 기계적으로 변화시키는 방법으로 메타표면이 구 조적으로 고정되는 장점이 있으나, 한정된 빔조향 각도나 이산화 또는 기계적으로 소스 안테나의 위치를 변경하 기 위해서 부피가 큰 모터를 사용해야 하는 단점이 있 다 [25]～ [29] .…”

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“…Beam steering transmitarray antenna using various source position, and phases of metasurface and source antenna [29] . 전체 투과 안테나와 빔조향 무선성능 [29] Fig. 21.…”

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confidence: 99%

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Tutorial: Reconfigurable Transmitarray Antenna Using Metasurface

Lee¹

2020

J. Korean Inst. Electromagn. Eng. Sci.

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In this paper, we describe the operation principle of a reconfigurable transmitarray antenna(TA) using a transmissive metasurface (MS) and introduce state-of-the-art technology trends. The TA comprises a source antenna; further, the design of a planar MS allows for the control of the wave front from the feed source when the MS exhibits a good transmittance and a full transmission phase variation of 360°. When the MS varies the phase of the transmitted wave passing through the MS such that it is in-phase at the normal plane of the desired direction, a highly directive beam can be obtained in this direction. Two types of methods can be employed to achieve beam steering in the desired direction. One is to control the shape of the transmission phase using an active MS with a changeable transmission phase variation. The other is to control the shape of the transmission phase by varying the wave front of the feed source. The reconfigurable TA has been intensively researched to achieve high efficiency, low-profile, and low-cost performance; further, the implementation and characteristics of various reconfigurable high-gain TAs are analyzed in this study.

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Beam pattern reconfigurable circularly polarized transmitarray antenna by rearrangement of sources

Cited by 11 publications

References 20 publications

Monopole‐like and semi‐directional reconfigurable pattern antenna for wireless body area network applications

Monopole‐like and semi‐directional reconfigurable pattern antenna for wireless body area network applications

Recent Developments and Challenges on Beam Steering Characteristics of Reconfigurable Transmitarray Antennas

Tutorial: Reconfigurable Transmitarray Antenna Using Metasurface

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