High-efficiency terahertz full-space metasurface for the transmission linear and reflection circular polarization wavefront manipulation

2022 ◽  
pp. 127932
Author(s):  
Jun Li ◽  
Yongzhi Cheng ◽  
Junpeng Fan ◽  
Fu Chen ◽  
Hui Luo ◽  
...  
Keyword(s):  
Circular Polarization ◽  
High Efficiency

scholarly journals High-Efficiency Polarizer Reflectarray Antennas for Data Transmission Links from a CubeSat

Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1802
Author(s):  
Eduardo Martinez-de-Rioja ◽  
Daniel Martinez-de-Rioja ◽  
Rafael López-Sáez ◽  
Ignacio Linares ◽  
Jose A. Encinar
Keyword(s):  
Circular Polarization ◽  
Data Transmission ◽  
High Efficiency ◽  
High Gain ◽  
Dual Band ◽  
Left Handed ◽  
Linearly Polarized ◽  
Flat Profile ◽  
First Time ◽  
Collimated Beam

This paper presents two designs of high-efficiency polarizer reflectarray antennas able to generate a collimated beam in dual-circular polarization using a linearly polarized feed, with application to high-gain antennas for data transmission links from a Cubesat. First, an 18 cm × 18 cm polarizer reflectarray operating in the 17.2–22.7 GHz band has been designed, fabricated, and tested. The measurements of the prototype show an aperture efficiency of 52.7% for right-handed circular polarization (RHCP) and 57.3% for left-handed circular polarization (LHCP), both values higher than those previously reported in related works. Then, a dual-band polarizer reflectarray is presented for the first time, which operates in dual-CP in the frequency bands of 20 GHz and 30 GHz. The proposed antenna technology enables a reduction of the complexity and cost of the feed chain to operate in dual-CP, as a linear-to-circular polarizer is no longer required. This property, combined with the lightweight, flat profile and low fabrication cost of printed reflectarrays, makes the proposed antennas good candidates for Cubesat applications.

High‐Efficiency and Tunable Circular‐Polarization Beam Splitting with a Liquid‐Filled All‐Metallic Catenary Meta‐Mirror

2019 ◽  
Vol 4 (7) ◽  
pp. 1900334 ◽  
Author(s):  
Xin Xie ◽  
Mingbo Pu ◽  
Kaipeng Liu ◽  
Xiaoliang Ma ◽  
Xiong Li ◽  
...  
Keyword(s):  
Circular Polarization ◽  
High Efficiency ◽  
Beam Splitting

scholarly journals Ultra-wideband high-efficiency reflective linear-to-circular polarization converter based on metasurface at terahertz frequencies

2017 ◽  
Vol 25 (22) ◽  
pp. 27616 ◽  
Author(s):  
Yannan Jiang ◽  
Lei Wang ◽  
Jiao Wang ◽  
Charles Nwakanma Akwuruoha ◽  
Weiping Cao
Keyword(s):  
Circular Polarization ◽  
High Efficiency ◽  
Ultra Wideband ◽  
Polarization Converter ◽  
Terahertz Frequencies

scholarly journals Design of Compact Dual Band Circular Polarized Micro-strip Antenna for High Efficiency WLAN 802.11ax-2019

2018 ◽  
Vol 7 (3) ◽  
pp. 135
Author(s):  
Syed Muhammad Ali
Keyword(s):  
Circular Polarization ◽  
High Speed ◽  
Return Loss ◽  
High Efficiency ◽  
Axial Ratio ◽  
Dual Band ◽  
Power Capacity ◽  
Network Systems ◽  
Efficient Manner ◽  
Compact Design

Design of antennas for the latest upcoming standards of WLANs is considered as a key challenge in the science of Mobile Communication Engineering. Micro strip antennas are supposed to have some quality features in mobile and wireless network systems. Their weight and size are reduced and they are capable of having low power capacity. All these interesting features enabled these type of antennas suitable for the communication of IEEE 802.11ax-2019 high speed WLANs. Shape of these antennas can be designed in an efficient manner to achieve required gain and bandwidth. In this paper the concept of circular polarization has been introduced along with compact design of antennas in order to achieve return loss and axial ratio of less than -10 dB and 3dB respectively. Antenna has been designed and simulated on CST MW studio software and usage of dual bands 2.4 and 5.2GHz having circular polarization is properly elucidated for 802.11ax-2019.

scholarly journals Circular Polarization Array Antenna with Triplate Stripline Elliptic Resonator Antennas

2021 ◽  
Vol 19 ◽  
pp. 256-261
Author(s):  
Yumi Takizawa ◽  
Atsushi Fukasawa ◽  
Cahya Edi Santosa ◽  
Josaphat Tetuko Sri Sumantyo
Keyword(s):  
Circular Polarization ◽  
High Efficiency ◽  
Axial Ratio ◽  
Microwave Energy ◽  
The Novel ◽  
Central Frequency ◽  
Plane Antenna ◽  
X Band ◽  
Tan Δ ◽  
Directive Gain

This paper presents a plane antenna and array for X-band circular polarization. The novel factors of this development are elliptic resonator antenna and Glass-Epoxy substrates. High efficiency in resonance and radiation of microwave energy is expected by elliptic resonators. Easy process in fabrication is expected by Glass-Epoxy substrate. Elliptic ratios of feed- and reactance-elements are chosen independently each other. The dielectric constant εr and tan δ are 4.6 and 0.010 respectively. Enough bandwidth of axial ratio of circular polarization and directive gain are confirmed to be 15 % of central frequency and 10 dB respectively for antenna array.

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