A meander annular-ring slot antenna for circularly polarized radiation

2010 ◽  
Author(s):  
Meng Ji ◽  
Zhijun Zhang ◽  
Zhenghe Feng ◽  
Ruihong Li
Keyword(s):  
Slot Antenna ◽  
Circularly Polarized ◽  
Annular Ring ◽  
Circularly Polarized Radiation ◽  
Polarized Radiation

scholarly journals A Novel Concentric Annular-Ring Slot Dual-Band Circularly Polarized Microstrip Antenna

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Yong Cheng ◽  
Hui Liu
Keyword(s):  
Microstrip Antenna ◽  
Simple Structure ◽  
Dual Band ◽  
Circularly Polarized ◽  
Annular Ring ◽  
Ism Band ◽  
Annular Slot ◽  
Circularly Polarized Radiation ◽  
Polarized Radiation

A simple structure concentric annular-ring slot dual-band circularly polarized (CP) microstrip antenna operating at ISM band (2.45 GHz) and 5G band (3.5 GHz) is proposed in this paper. The antenna achieves dual-band operation by digging two concentric annular-ring slots on the ground. And on the angular positions with 45 degrees inclined of each annular slot, two bent structures are loaded to generate circularly polarized radiation. The radiation of this antenna is bidirectional, and the directions of rotation are opposite. The measured results of the annular-ring slot microstrip antenna show good performance of dual-band circularly polarized characteristics.

A circular CPW-FED slot antenna for broadband circularly polarized radiation

2007 ◽  
Vol 49 (11) ◽  
pp. 2728-2733 ◽  
Author(s):  
I-Chung Deng ◽  
Jin-Bo Chen ◽  
Qing-Xiang Ke ◽  
Jun-Rong Chang ◽  
Woon-Fa Chang ◽  
...  
Keyword(s):  
Slot Antenna ◽  
Circularly Polarized ◽  
Circularly Polarized Radiation ◽  
Polarized Radiation

Wideband Inverted-L Microstrip-via-Fed Circularly Polarized Antenna with Asymmetrical Ground for WLAN/Wimax Applications

Frequenz ◽  
2018 ◽  
Vol 72 (7-8) ◽  
pp. 333-341 ◽  
Author(s):  
Qiang Chen ◽  
Hou Zhang ◽  
Lu-chun Yang ◽  
Bin-bin Li ◽  
Xue-liang Min
Keyword(s):  
Circular Polarization ◽  
Parametric Study ◽  
Ground Plane ◽  
Axial Ratio ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
Large Bandwidth ◽  
Circularly Polarized Radiation ◽  
Polarized Radiation

Abstract A design with wideband and circularly polarized radiation antenna from an open-slot antenna has been demonstrated in this paper. The proposed antenna, which consists of an open slot and an inverted-L strip feeding, provides a large bandwidth, which completely cover the Wimax (3.3–3.8 GHz) and WLAN (2.4–2.48 GHz) bands. The open slot is formed by an modified ground plane with a slit cut and monofilar spiral stubs employed, which fed by an asymmetrical inverted-L strip feedline using a via. As demonstrated, the CP operation was significantly improved by loading monofilar spiral stubs connected to the asymmetric feedline by means of a via. A parametric study of the key parameters is made and the mechanism for circular polarization is described. After optimization, the impedance bandwidth is approximately 3.78 GHz (2.12 to 5.9 GHz) and the 3 dB axial ratio bandwidth is approximately 2.75 GHz (2.2 to 4.95 GHz), which represent fractional bandwidths of approximately 94.3 % and 76.9 %, respectively.

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