An Investigation into the Equivalnce of Radiation Characteristics of 90° Circular Sector Microstrip Antenna vis-à-vis Circular Microstrip Antenna

In this work, authors have investigated feed-probe influence on radiation characteristics of 90° circular sector microstrip antenna (CSMA). It is observed that by exciting a 90° CSMA with a feed-probe at two different feed-probe positions, two different modes TM 01 and TM21 can be excited within the...

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Bibliographic Details
Published in2018 IEEE Indian Conference on Antennas and Propogation (InCAP) pp. 1 - 4
Main Authors Ghosh, Sudip Kumar, Chakraborty, Subhradeep, Ghosh, Sanjay Kumar, Ghosh, Abhijyoti, Chattopadhyay, Sudipta, Singh, L.L. K.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2018
Subjects
Antenna feeds
Antenna radiation patterns
Circular Microstrip Antenna
Circular Sector Microstrip Antenna
Electromagnetic Modes
Microstrip
Microstrip antennas
Multiaccess communication
Resonant frequency
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Summary:In this work, authors have investigated feed-probe influence on radiation characteristics of 90° circular sector microstrip antenna (CSMA). It is observed that by exciting a 90° CSMA with a feed-probe at two different feed-probe positions, two different modes TM 01 and TM21 can be excited within the antenna structure. The resonant frequencies of these two modes are different but both of these modes have broadside radiation patterns in E and H plane. It is also observed that a 90° CSMA resonating at higher order TM 01 mode has nearly equivalent radiation characteristics with a circular microstrip antenna resonating at dominant TM 11 mode resonating at nearly same frequency. Therefore, the 90° CSMA becomes a suitable alternative to a circular microstrip antenna.
DOI:10.1109/INCAP.2018.8770757