NDLI: Analysis of Broadband L-probe Fed Microstrip Antennas

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Analysis of Broadband L-probe Fed Microstrip Antennas

Content Provider	CiteSeerX
Author	Deshmukh, Amit A. Jondhale, Rakesh Ajmera, Ishitva Phatak, Neelam
Abstract	Broadband suspended microstrip antenna on thicker substrate is realized by using non-contact L-probe feeding technique. The guidelines for selecting total L-probe length are not available in the reported literature. In this paper, an analysis of broadband L-probe fed variations of microstrip antenna like, circular microstrip antenna, annular ring microstrip antenna, rectangular microstrip antenna, E-shaped microstrip antenna and half E-shaped microstrip antenna, is presented. It was observed that, total L-probe feed length nearly equals quarter wavelength at the resonance frequency of equivalent patch. Further using this quarter wavelength approximation, L-probe fed rectangular and circular microstrip antennas were re-designed at different frequencies which results into the broadband response with formation of loop inside the VSWR = 2 circle. The comparison between two non-contact feeding techniques of microstrip antenna, namely proximity feed and L-probe feed is presented. The two have similar performance in terms of bandwidth and radiation pattern, with proximity feeding technique to be the simplest method to be implemented in thicker substrates. Keyword Rectangular microstrip antenna, Circular microstrip antenna, Annular ring microstrip antenna, E-shaped microstrip antenna, Broadband microstrip antenna, L-probe feed 1.
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Subject Keyword	Microstrip Antenna Circular Microstrip Antenna Broadband L-probe Fed Microstrip Antenna E-shaped Microstrip Antenna Thicker Substrate Broadband L-probe Radiation Pattern Broadband Microstrip Antenna Equal Quarter Wavelength Total L-probe Feed Length Non-contact L-probe Feeding Technique Proximity Feed Resonance Frequency Similar Performance Reported Literature Quarter Wavelength Approximation Half E-shaped Microstrip Antenna Broadband Response Annular Ring Microstrip Antenna Rectangular Microstrip Antenna Equivalent Patch Total L-probe Length Different Frequency L-probe Feed Keyword Rectangular Microstrip Antenna
Content Type	Text

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