Design of a circular array antenna for generating waves with orbital angular momentum

2017 ◽  
Vol 59 (9) ◽  
pp. 2246-2249 ◽  
Author(s):  
Jae-Won Choi ◽  
Soon-Soo Oh
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Array Antenna ◽  
Circular Array ◽  
Circular Array Antenna

scholarly journals Focusing light with orbital angular momentum by circular array antenna

2017 ◽  
Vol 25 (12) ◽  
pp. 13728 ◽  
Author(s):  
Takashi Arikawa ◽  
Shohei Morimoto ◽  
Koichiro Tanaka
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Array Antenna ◽  
Circular Array ◽  
Circular Array Antenna

Design of Higher-Order Circular Array Antenna with Multiple Patch Elements Based on Angular Momentum

2021 ◽  
pp. 1-7
Author(s):  
R. Krishnamoorthy ◽  
S. L. Prathapa Reddy ◽  
Ambresh P. Ambalgi ◽  
M. Amina Begum
Keyword(s):  
Angular Momentum ◽  
Higher Order ◽  
Array Antenna ◽  
Circular Array ◽  
Circular Array Antenna

scholarly journals An Electronically Mode Reconfigurable Orbital Angular Momentum Array Antenna

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 64603-64610 ◽  
Author(s):  
Yan-Yang Wang ◽  
Yong-Xing Du ◽  
Ling Qin ◽  
Bao-Shan Li
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Array Antenna

scholarly journals Synthesis of Circular Array Antenna for Sidelobe Level and Aperture Size Control Using Flower Pollination Algorithm

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
V. S. S. S. Chakravarthy Vedula ◽  
S. R. Chowdary Paladuga ◽  
M. Rao Prithvi
Keyword(s):  
Array Antenna ◽  
Computational Time ◽  
Flower Pollination Algorithm ◽  
Side Lobe Level ◽  
Aperture Size ◽  
Circular Array ◽  
Sidelobe Level ◽  
Beam Scanning ◽  
Flower Pollination ◽  
Circular Array Antenna

Sidelobe level suppression is a major problem in circular array antenna (CAA) synthesis. Many conventional numerical techniques are proposed to achieve this which are time consuming and often fail to handle multimodal problems. In this paper, a method of circular array synthesis using nature inspired flower pollination algorithm (FPA) is proposed. The synthesis technique considered here adapts one and two degrees of freedom, namely, amplitude only and amplitude spacing. The effectiveness of the FPA is studied by comparing the results with genetic algorithm (GA) and uniform circular array antenna (UCAA) with uniform spacing. Also the effect of additional degree of freedom on the aperture size and the computational time is analyzed. A relative side lobe level (SLL) of −25 dB is achieved using the algorithm under both no beam scanning (0°) and beam scanning (15°) conditions for 20 and 40 elements of CAA.

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