Wideband and High-Gain Corporate-Fed Gap Waveguide Slot Array Antenna With ETSI Class II Radiation Pattern in $V$ -Band

2017 ◽  
Vol 65 (4) ◽  
pp. 1823-1831 ◽  
Author(s):  
Abbas Vosoogh ◽  
Per-Simon Kildal ◽  
Vessen Vassilev
Keyword(s):  
Radiation Pattern ◽  
Class Ii ◽  
High Gain ◽  
Array Antenna ◽  
Waveguide Slot ◽  
V Band

scholarly journals Radiation Pattern Reconfigurable Waveguide Slot Array Antenna Using Liquid Crystal

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Hongyu Shi ◽  
Jianxing Li ◽  
Shitao Zhu ◽  
Anxue Zhang ◽  
Zhuo Xu
Keyword(s):  
Dielectric Constant ◽  
Liquid Crystal ◽  
Electric Field ◽  
Radiation Pattern ◽  
Array Antenna ◽  
Antenna Element ◽  
Waveguide Slot ◽  
Radiation Direction ◽  
Coupled Resonator

In this paper, we proposed a radiation pattern reconfigurable waveguide slot array antenna using liquid crystal (LC). Together with the waveguide slot, the designed complementary electric-field-coupled resonator functions like a switch controlled by the dielectric constant of the LC, which can control the antenna element to radiate or not. Thus, the array factor and radiation pattern can be manipulated. The proposed antenna was simulated, fabricated, and measured. Its radiation direction can be reconfigured to 46° or 0° at about 15 GHz.

W-Band Waveguide Slot Array Antenna with High Gain Based on Rectangular Micro-Coaxial Process

2021 ◽  
Author(s):  
Minjie Shu ◽  
Weiwei Liu ◽  
Jianxing Li ◽  
Yuanxi Cao ◽  
Cheng Guo ◽  
...  
Keyword(s):  
High Gain ◽  
Array Antenna ◽  
Waveguide Slot ◽  
W Band

scholarly journals Novel Design of High-Gain Planar Dipole-Array Antenna for RFID 2.45 GHz

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Danpeng Xie ◽  
Xueguan Liu ◽  
Huiping Guo ◽  
Xinmi Yang
Keyword(s):  
Radiation Pattern ◽  
High Gain ◽  
Base Station ◽  
Array Antenna ◽  
Phase Retardation ◽  
Parallel Lines ◽  
Novel Design ◽  
Radiation Direction ◽  
Peak Gain

This paper presents a novel high-gain planar dipole-array antenna for 2.45 GHz which consists of four planar dipole elements placed in two parallel lines. Phase retardation of each element is set by feeding network to form controllable radiation direction. The radiation pattern of the array is discussed according to Arrays Theorem. The measured −10 dB band is from 2.3 GHz to 2.57 GHz, and peak gain in this band is 7.5 dBi. The gain can even reach 10.5 dBi after installing additional ground. The proposed antenna has advantages of high gain, controllable direction, and planarity which are suitable for 2.45 GHz RFID base station.

scholarly journals Switch-Beam Vivaldi Array Antenna Based On 4x4 Butler Matrix for mmWave

2018 ◽  
Vol 218 ◽  
pp. 03011
Author(s):  
Nurlaila Safitri ◽  
Rina Pudji Astuti ◽  
Bambang Setia Nugroho
Keyword(s):  
Radiation Pattern ◽  
Single Layer ◽  
High Gain ◽  
Array Antenna ◽  
Low Loss ◽  
Butler Matrix ◽  
Directional Radiation ◽  
Phase Setting ◽  
Vivaldi Antenna ◽  
Fixed Beam

It will be diffcult to use either omnidirectional or fixed beam antenna due to the high propagation losses caused by atmospheric absorption at mmWave for 5G mobile communication. Several studies have been conducted recently using butler matrix which is part of switchable antenna with some advantages such as simple, minimal cost, low loss, etc. Previous studies also have designed vivaldi array antenna at 28 GHz which provides a fix beam directional radiation pattern with narrow beam that requires real phase setting. However, there has been no research using vivaldi antenna with butler matrix, whereas it has some advantages such as wide bandwidth, high gain, high directivity, etc. This paper proposed 4x4 butler matrix integrated with vivaldi antenna by using phase shift of 45 . The design is developed on a single layer of Rogers RT5880 with dielectric constant 2.2 and thickness 0.254 mm. Best results of simulation were picked for overall system at 28 GHz, and the results of antenna as follows: the return loss was below -10 dB, the realized antennas gain was 10.2 dB with unidirectional radiation pattern and bandwidth antenna of 6 GHz that covers from 25 GHz to 31 GHz. The butler matrix average phase di erent between output port are -44.106°, 137.38°, -137.66°, 43.95° with phase err°r °f 0.894°, 2.38°, 2.66°, 1.06°. Antenna array that has been given di erent phase by butler matrix is able to shift radiation pattern on the input port successively with range of beam that can be achieved equal to 185o.

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