I.J. Wireless and Microwave Technologies, 2019, 3, 25-32 Published Online May 2019 in MECS(http://www.mecs-press.net) DOI: 10.5815/ijwmt.2019.03.03 Available online at http://www.mecs-press.net/ijwmt Compact Antenna Analysis in terms of Wave Transmission Modes Pranjali Jumle a , Prasanna Zade b a Department of Electronics and Telecommunication Engg, G H Raisoni college of Engg, Nagpur, India b Department of Electronics and Telecommunication Engg, Yeshwantrao chavan of Engineering and Research, Nagpur, India Received: 05 April 2019; Accepted: 22 April 2019; Published: 08 May 2019 Abstract The electrically compact microstrip antenna is studied with analysis of different modes of transmission. The design of a rectangular microstrip antenna (RMSA) is implemented for a Bluetooth band. The parallel shorting plate is inserted to reduce size which in turn shifts the null point of the patch to the position of the plate and excited the mode below its fundamental operating mode i.e. TM 00 mode. IE3d simulator is used to analyze the mode of transmission in terms of the current path. Simulated and measured results validate the hypothesis made of the fact of the mode of transmission. Index Terms: Compact, shorting plate, transmission mode, current path. © 2019 Published by MECS Publisher. Selection and/or peer review under responsibility of the Research Association of Modern Education and Computer Science 1. Introduction The design of the compact microstrip antenna had been a challenging task for researchers with keeping the other antenna parameters intact. Many types of researches have reported limitations of small antennas [1-8, 16] and formed a relative theory on size reduction with wideband, higher directivity and superior quality communication characteristics. It includes a loading of distributed inductor/ Capacitor [7-9], using a complementary symmetry split ring resonator (CSSR) [10], using a virtually shorted patch [11], using a planar inverted F shaped structure (PIFA) [12]. Many structures have been reported with suspended geometry for bandwidth enhancement [13]. Shorting strips/ plates techniques with meandering has been reported in [14-15]. K.F.Lee [17] reported that by placing a shorting wall along the null in the electric field across the center of the patch, the resonant length can be reduced by a factor of two and thereby area occupied by the patch will be * Corresponding author. E-mail address: jumle.pranjali03@gmail.com