Circularly polarized 1 × 4 square slot array antenna by utilizing compacted modified butler matrix and branch line coupler

2015 ◽  
Vol 26 (2) ◽  
pp. 146-153 ◽  
Author(s):  
Saeid Karamzadeh ◽  
Mesut Kartal
Keyword(s):  
Array Antenna ◽  
Circularly Polarized ◽  
Branch Line ◽  
Butler Matrix

Wideband Octagonal Dual Circularly Polarized Sub-array Antenna for Ku-Satellite Systems

2021 ◽  
Vol 35 (12) ◽  
pp. 1500-1506
Author(s):  
Khalid. Ibrahim ◽  
Walaa. Hassan ◽  
Esmat Abdallah ◽  
Ahmed Attiya
Keyword(s):  
Circular Polarization ◽  
Antenna Array ◽  
Single Layer ◽  
Array Antenna ◽  
Circularly Polarized ◽  
Branch Line ◽  
Satellite Systems ◽  
Analysis And Design ◽  
Simulation Results ◽  
Ku Band

In this paper the analysis and design of a dual circularly polarized 4×4 antenna array operating in Ku-band are discussed with emphasis on its sequential feeding network. The dual circular polarization is achieved by feeding a stacked octagonal patches with a wideband branch line coupler. The proposed 4×4 antenna array is based on two separate sequential feeding networks for LH and RH circular polarizations. The advantage of the proposed feeding network is that it is implemented on a single layer. Simulation results by using both HFSS and CST are presented for comparison. In addition, experimental verifications are presented.

STEERABLE ARRAY ANTENNA USING A 2 × 2 BUTLER MATRIX FOR 5G APPLICATIONS

2015 ◽  
Vol 77 (10) ◽  
Author(s):  
Stella Ifeoma Orakwue ◽  
Razali Ngah ◽  
Tharek A. Rahman ◽  
B. M. Sa’ad ◽  
Mohsen Khalily
Keyword(s):  
Dielectric Constant ◽  
Wireless Communications ◽  
Frequency Band ◽  
Substrate Material ◽  
Array Antenna ◽  
Beam Scanning ◽  
Branch Line ◽  
Wireless Applications ◽  
Butler Matrix ◽  
Fifth Generation

This paper presents the design of a beam steerable array antenna based on branch line coupler (BLC) at 28 GHz frequency band for fifth generation (5G) wireless applications.  The array is designed using Rogers RT/duroid 5880 substrate material of 0.254 mm thickness and dielectric constant of 2.2. The designed antenna has six elements array and is fed by a BLC which serves as a beamformer to obtain the beam scanning ranging from -16 to +16 degrees. The maximum gain of 14.5 dBi and a wideband that cover from 25.2 GHz to 32 GHz was obtained by measurement. The proposed antenna is applicable to 28 GHz frequency band proposed for 5G wireless communications. All simulated and measured results are clearly presented.

A Novel Dual-Band Branch Line Coupler for Dual-Band Butler Matrix

2019 ◽  
Vol 66 (12) ◽  
pp. 1987-1991 ◽  
Author(s):  
Aijaz M. Zaidi ◽  
Binod K. Kanaujia ◽  
Mirza Tariq Beg ◽  
Jugul Kishor ◽  
Karumudi Rambabu
Keyword(s):  
Dual Band ◽  
Branch Line ◽  
Butler Matrix

Compact circularly-polarized microstrip array antenna

2010 ◽  
Author(s):  
Ahmed H. Abdelrahman ◽  
Fatma Elhefnawi ◽  
Atef Z. Elsherbeni ◽  
Moataza Hendi ◽  
Salwa Elramly
Keyword(s):  
Array Antenna ◽  
Circularly Polarized ◽  
Microstrip Array ◽  
Microstrip Array Antenna
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