Simple and compact slot-patch antenna with broadband circularly polarized radiation

2016 ◽  
Vol 58 (7) ◽  
pp. 1634-1641 ◽  
Author(s):  
Tu Tuan Le ◽  
Viet Hoang The ◽  
Hyun Chang Park
Keyword(s):  
Patch Antenna ◽  
Circularly Polarized ◽  
Circularly Polarized Radiation ◽  
Polarized Radiation

scholarly journals A Slotted Single Feed Circularly Polarized Microstrip Patch Antenna with Suppressed Surface Wave Losses for WLAN Applications

2019 ◽  
Vol 9 (1S) ◽  
pp. 246-248
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Antenna Structure ◽  
Circularly Polarized ◽  
Microstrip Patch ◽  
Circular Patch Antenna ◽  
Circularly Polarized Radiation ◽  
Polarized Radiation

The circularly polarized microstrip antenna has been of great importance in WLAN applications. A circularly polarized slotted circular patch antenna with co-axial feed geometry has been designed to meet the requirements. The antenna designed has been slotted at several locations to make it radiate circularly polarized radiation. Two metallic cylindrical vias have been inserted near the two diametric ends of the slot to improve the realized gain of the antenna. The antenna structure is resonating at 6.4 GHz with 3dB axial ratio bandwidth of 200MHz and gain of 9.8dB has been observed.

scholarly journals A Novel Dual-Broadband Circularly Polarized Patch Antenna for Precise Satellite Navigation

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Fumin Lin ◽  
Liangxian Zhang ◽  
Huiping Cai ◽  
Mingjian Liu ◽  
Xiaopeng Li ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Satellite Navigation ◽  
Capacitive Coupling ◽  
Dual Band ◽  
Gain Bandwidth ◽  
Circularly Polarized ◽  
Compact Antenna ◽  
Circularly Polarized Radiation ◽  
High Band ◽  
Polarized Radiation

This paper presents a novel dual-band circularly polarized patch antenna for precise satellite navigation. The radiation elements are composed of the inner cross-shaped patch and the outer annular patch which are printed on the same surface of one substrate. Two patches work in different bands, respectively, and emit dual-band circularly polarized radiation. In order to obtain a more compact antenna to meet the application of precise satellite navigation, we vertically place four metal cylinders under the ends of the cross-shaped patch to form four capacitive loadings to lower the resonant frequency of the inner cross-shaped patch. A capacitive coupling feed structure is used to match the input impedance of a patch antenna and make the antenna compact enough. The simulated and measured results show that the proposed antenna can produce appropriate dual-band circularly polarized radiation patterns for precise satellite navigation. The measured results of the antenna illustrate that maximum RHCP gain of the antenna is 4.72 dBi in the low band and 3.98 dBi in the high band, the 3 dB gain bandwidth is 70 MHz in the low band and 65 MHz in the high band.

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