Physical and Quantitative Analysis of Compact Rectangular Microstrip Antenna with Shorted Non-Radiating Edges for Reduced Cross-Polarized Radiation Using Modifi ed Cavity Model

2014 ◽  
Vol 56 (4) ◽  
pp. 61-72 ◽  
Author(s):  
Dia Ghosh ◽  
Sudip Kr. Ghosh ◽  
Sudipta Chattopadhyay ◽  
Swarnali Nandi ◽  
Debolina Chakraborty ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Microstrip Antenna ◽  
Cavity Model ◽  
Rectangular Microstrip Antenna ◽  
Polarized Radiation

Rectangular Microstrip Antenna on Slot-Type Defected Ground for Reduced Cross-Polarized Radiation

2015 ◽  
Vol 14 ◽  
pp. 321-324 ◽  
Author(s):  
Abhijyoti Ghosh ◽  
Dia Ghosh ◽  
Sudipta Chattopadhyay ◽  
L. Lolit Kumar Singh
Keyword(s):  
Microstrip Antenna ◽  
Rectangular Microstrip Antenna ◽  
Polarized Radiation

Arc-cornered microstrip antenna with defected ground structure for broad banding and improved cross-polarization suppression over whole skew planes

2015 ◽  
Vol 9 (2) ◽  
pp. 437-446 ◽  
Author(s):  
Subhradeep Chakraborty ◽  
Sudipta Chattopadhyay
Keyword(s):  
Microstrip Antenna ◽  
Dominant Mode ◽  
Impedance Bandwidth ◽  
Cross Polarization ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Rectangular Microstrip Antenna ◽  
Opposite Manner ◽  
Sharp Corners ◽  
Polarized Radiation

Defected ground structure (DGS)-integrated arc-cornered rectangular microstrip antenna (RMA) has been investigated to achieve broadband along with high co-polarized to cross-polarized radiation (CP–XP) isolation over principal as well as over skew planes without affecting the dominant mode co-polarized (CP) radiation pattern. The present arc-cornered RMA on circular and rectangular dot-type DGS is thoroughly studied and compared with the conventional rectangular microstrip antenna. In the present paper, a crucial emphasis is given to improve CP–XP isolation in all the skew planes and by employing circular dot-type DGS around 20 dB CP–XP isolation is achieved over whole skew planes as well as in the H-plane with the proposed structure with 20% impedance bandwidth. On the contrary, the CP–XP isolation and impedance bandwidth vary in opposite manner in case of the rectangular dot-type DGS. Around 25 and 10 dB CP–XP isolation with 9 and 22% impedance bandwidth have been obtained with thin and thick rectangular dot-type DGS, respectively. The corners of the patch surface are rounded in such a way to reduce spurious radiations from the sharp corners, which are generally attributed for high XP radiation along the diagonal directions.

Improved Cross Polarization and Broad Impedance Bandwidth from Simple Single Element Shorted Rectangular Microstrip Patch: Theory and Experiment

Frequenz ◽  
2016 ◽  
Vol 70 (1-2) ◽  
pp. 1-9 ◽  
Author(s):  
Rakshapada Poddar ◽  
Subhradeep Chakraborty ◽  
Sudipta Chattopadhyay
Keyword(s):  
Microstrip Antenna ◽  
Impedance Bandwidth ◽  
Single Element ◽  
Cross Polarization ◽  
Radiation Characteristics ◽  
Microstrip Patch ◽  
Present Structure ◽  
Rectangular Microstrip Antenna ◽  
Theory And Experiment ◽  
Polarized Radiation

AbstractA simple, compact and single element rectangular microstrip antenna with three pairs of shorting plates has been proposed and investigated experimentally for broad impedance bandwidth and improved cross polarized (XP) radiation compared to maximum co-polarized (CO) gain without affecting the co-polarized radiation pattern. Around 25–40 dB isolation between copolarized radiation to cross polarized radiation (CO-XP isolation) along with 1.32 GHz impedance bandwidth is achieved with the proposed structure. The present structure is very simple and easy to manufacture and provides high CO-XP isolation over entire angular range around the broadside direction. Moreover, the present structure is free from back radiation in terms of XP fields. The present investigation provides an insightful, visualization-based understanding of concurrent improvement in impedance bandwidth and the XP radiation characteristics with the present structure.

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