scholarly journals 12- and 21-GHz Dual-Band Dual-Circularly Polarized Offset Parabolic Reflector Antenna Fed by Microstrip Antenna Arrays for Satellite Broadcasting Reception

2019 ◽  
Vol E102.B (7) ◽  
pp. 1323-1333 ◽  
Author(s):  
Masafumi NAGASAKA ◽  
Masaaki KOJIMA ◽  
Hisashi SUJIKAI ◽  
Jiro HIROKAWA
Keyword(s):  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Reflector Antenna ◽  
Dual Band ◽  
Circularly Polarized ◽  
Parabolic Reflector ◽  
Satellite Broadcasting

scholarly journals Modified Dual-Band Stacked Circularly Polarized Microstrip Antenna

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Guo Liu ◽  
Liang Xu ◽  
Yi Wang
Keyword(s):  
Radiation Pattern ◽  
Global Positioning System ◽  
Microstrip Antenna ◽  
High Performance ◽  
Axial Ratio ◽  
Dual Band ◽  
Optimized Design ◽  
Positioning System ◽  
Circularly Polarized ◽  
Global Positioning

A novel high-performance circularly polarized (CP) antenna is proposed in this paper. Two separate antennas featuring the global positioning system (GPS) dual-band operation (1.575 GHz and 1.227 GHz for L1 band and L2 band, resp.) are integrated with good isolation. To enhance the gain at low angle, a new structure of patch and two parasitic metal elements are introduced. With the optimized design, good axial ratio and near-hemispherical radiation pattern are obtained.

Circularly-Polarized Focused Microstrip Antenna Arrays

2016 ◽  
Vol 15 ◽  
pp. 52-55 ◽  
Author(s):  
Yuhai Jiang ◽  
Wen Geyi ◽  
Lingsheng Yang ◽  
Hucheng Sun
Keyword(s):  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Circularly Polarized

Offset Parabolic Reflector Antenna Fed by EBG Dual-Band Focal Feed for Space Application

2010 ◽  
Vol 9 ◽  
pp. 854-858 ◽  
Author(s):  
Ahmad Kanso ◽  
R. Chantalat ◽  
M. Thevenot ◽  
E. Arnaud ◽  
T. Monediere
Keyword(s):  
Reflector Antenna ◽  
Dual Band ◽  
Space Application ◽  
Parabolic Reflector

scholarly journals Design of Multilevel Sequential Rotation Feeding Networks Used for Circularly Polarized Microstrip Antenna Arrays

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Aixin Chen ◽  
Chuo Yang ◽  
Zhizhang Chen ◽  
Yanjun Zhang ◽  
Yingyi He
Keyword(s):  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Communication Systems ◽  
Satellite Communication ◽  
Phased Array ◽  
Improve Performance ◽  
Multiple Series ◽  
Circularly Polarized ◽  
Microstrip Antenna Array ◽  
Feeding Techniques

Sequential rotation feeding networks can significantly improve performance of the circularly polarized microstrip antenna array. In this paper, single, double, and multiple series-parallel sequential rotation feeding networks are examined. Compared with conventional parallel feeding structures, these multilevel feeding techniques present reduction of loss, increase of bandwidth, and improvement of radiation pattern and polarization purity. By using corner-truncated square patch as the array element and adopting appropriate level of sequential rotation series-parallel feeding structures as feeding networks, microstrip arrays can generate excellent circular polarization (CP) over a relatively wide frequency band. They can find wide applications in phased array radar and satellite communication systems.

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.

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