A reconfigurable patch antenna using switchable slots for circular polarization diversity

2002 ◽  
Vol 12 (3) ◽  
pp. 96-98 ◽  
Author(s):  
Fan Yang ◽  
Y. Rahmat-Samii
Keyword(s):  
Circular Polarization ◽  
Patch Antenna ◽  
Polarization Diversity ◽  
Circular Polarization Diversity

A CPW-fed reconfigurable patch antenna with circular polarization diversity

2014 ◽  
Vol 7 (6) ◽  
pp. 753-758 ◽  
Author(s):  
Ch. Sulakshana ◽  
L. Anjaneyulu
Keyword(s):  
Circular Polarization ◽  
Patch Antenna ◽  
Return Loss ◽  
Coplanar Waveguide ◽  
Axial Ratio ◽  
Polarization Diversity ◽  
Left Hand ◽  
Switching Condition ◽  
Parametric Studies ◽  
Made In

This paper presents a simple and compact coplanar waveguide (CPW)-fed circular-shaped reconfigurable patch antenna with a switchable circular polarization (CP) sense. The circular patch is cut at the ends vertically and switches are introduced to connect the patch ends. By controlling the ON/OFF status of the two switches, the polarization of the antenna can be switched between two states: left-hand circular polarization and right-hand circular polarization. The patch is designed on a very thin RT Duroid substrate of dielectric constant (εr) of 2.2 and thickness of 0.254 mm. The overall antenna dimensions are 35 × 30 mm. The antenna is designed and simulated using finite-element method -based EM simulator, HFSS. For each switching condition the return loss curve, radiation pattern are obtained. Axial ratio curves for polarization diversity cases are also plotted. Parametric studies have been made in order to get optimized values for certain antenna dimensions such as thickness, CPW ground to feed gap, etc.

Sign in / Sign up

Export Citation Format

Share Document