Paper Info
Title
A Characteristic-Mode-Based Polarization-Reconfigurable Antenna and its Array.
Abstract
This paper reports a novel polarization-reconfigurable antenna based on the theory of characteristic mode (CM), which can electronically alter its polarization states between linear polarization (LP), left-hand circular polarization (LHCP), and right-hand circular polarization (RHCP). A square patch with an I-shaped slot is used as a main radiator, which has two LP orthogonal CMs with the same modal significance and 90 degrees characteristic angle difference at 2.4 GHz. A simple feeding network is designed to excite the different combinations of the two modes. By properly choosing the state of the excitation, the LP, LHCP, and RHCP waves can be generated. A 1 x 4 antenna array is designed for the demonstration of array application, and experiments are carried out to validate the proposed design. The measured overlapping impedance bandwidth (BW) (vertical bar S-11 vertical bar <= -10 dB) and 3-dB gain BW is 2.25-2.7 GHz in the LP state. The overlapping BWs in conjunction with the 3-dB axial ratio BW are 2.16-2.65 and 2.1-2.55 GHz in the LHCP and RHCP states, respectively. The measured maximum gains are 7.2 dBi, 9.78 dBic, and 9.8 dBic for the LP, LHCP, and RHCP states, respectively. The common BW for all three polarization states is 2.25-2.55 GHz or 12.5%. Experimental results show a good performance of the proposed antenna array.
Year
DOI
Venue
2018
10.1109/ACCESS.2018.2877498
IEEE ACCESS
Keywords
Field
DocType
Theory of characteristic mode (CM),polarization-reconfigurable antenna,modal significance,characteristic angle
Radiator (engine cooling),Antenna (radio),Circular polarization,Computer science,Optics,Antenna array,Polarization (waves),Reconfigurable antenna,Linear polarization,Axial ratio,Distributed computing
Journal
Volume
ISSN
Citations 
6
2169-3536
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Ke Li15026.41
Yan Shi255.54
Hua Shen300.34
long tu li453.75