Compact circularly polarized GNSS antenna with broad beam and stable phase center based on fragment‐type crossed dipoles

2021 ◽  
Author(s):  
Wenjuan Zhang ◽  
Hongliang Zhang ◽  
Xiaopo Wu ◽  
Gang Wang
Keyword(s):  
Stable Phase ◽  
Phase Center ◽  
Circularly Polarized ◽  
Broad Beam ◽  
Fragment Type

scholarly journals A BROADBAND CROSSED-SLOT CIRCULARLY POLARIZED ANTENNA WITH STABLE PHASE CENTER FOR GNSS APPLICATIONS

2018 ◽  
Vol 86 ◽  
pp. 55-67 ◽  
Author(s):  
Hongliang Zhang ◽  
Yuanyue Guo ◽  
Wenjuan Zhang ◽  
Gang Wang
Keyword(s):  
Stable Phase ◽  
Phase Center ◽  
Circularly Polarized

A Wideband Circularly Polarized Crossed-Slot Antenna With Stable Phase Center

2019 ◽  
Vol 18 (5) ◽  
pp. 941-945 ◽  
Author(s):  
Hongliang Zhang ◽  
Yuanyue Guo ◽  
Gang Wang
Keyword(s):  
Slot Antenna ◽  
Stable Phase ◽  
Phase Center ◽  
Circularly Polarized

A Wideband Corrugated Ridged Horn Antenna With Enhanced Gain and Stable Phase Center for X- and Ku-Band Applications

2019 ◽  
Vol 18 (5) ◽  
pp. 1031-1035 ◽  
Author(s):  
Saeed Manshari ◽  
Slawomir Koziel ◽  
Leifur Leifsson
Keyword(s):  
Horn Antenna ◽  
Stable Phase ◽  
Phase Center ◽  
Ku Band

scholarly journals Optimization of the UWB Feed Antenna Position in Reflector Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Nurhan Türker Tokan
Keyword(s):  
High Performance ◽  
Phase Error ◽  
Design Procedure ◽  
Reflector Antenna ◽  
Slot Antenna ◽  
Stable Phase ◽  
Phase Center ◽  
Center Position ◽  
Reflector System ◽  
Novel Method

In reflector system design, achieving high stability of phase center position with changes in frequency in reflector feed antennas is highly desired. However, obtaining highly stable phase center is not possible for UWB feed antennas, specially for planar ones. Thus, an optimum positioning for the UWB feed antenna should be defined. Optimization of the positioning of the feed antenna is essential since this process lowers resulting phase error losses significantly. In this work, a novel method for optimizing the UWB feed position of a prime focus reflector antenna from phase and amplitude recordings of the measured radiated field is introduced. An automatic and fast design procedure, based on Genetic Algorithms, is described. The proposed methodology has been numerically and experimentally assessed. The procedure is introduced by an application example to one of the most commonly used UWB feed antennas in high-performance reflector antenna systems: Linear Tapered Slot Antenna (LTSA). A LTSA antenna operating in 6–25 GHz frequency band is designed and manufactured. The performance of the method is quantified in terms of its phase error losses inE- andH-planes for reflector illumination.

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