Design of UWB Rectangular Microstrip Antenna with Defected Ground Structure to Detect Breast Cancer

2022 ◽  
pp. 215-222
Author(s):  
A. Sudhakar ◽  
M. V. Nageswara Rao ◽  
Telagarapu Prabhakar
Keyword(s):  
Breast Cancer ◽  
Microstrip Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Rectangular Microstrip Antenna ◽  
Detect Breast Cancer

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.

Application of Defected Ground Structure for Augmenting High-Gain Ultra-Wide Bandwidth from Rectangular Microstrip Antenna

2018 ◽  
Vol 38 (2) ◽  
pp. 123-133 ◽  
Author(s):  
Pawar Umesh Ankush ◽  
Subhradeep Chakraborty ◽  
L. Lolit Kumar Singh ◽  
Sudipta Chattopadhyay
Keyword(s):  
Microstrip Antenna ◽  
High Gain ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Wide Bandwidth ◽  
Rectangular Microstrip Antenna
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