Analysis of Log Periodic Dipole Array Antennas using Method of Moments

Abstract

The Log Periodic Dipole Array (LPDA) antenna is extensively used for applications, which require broad bandwidth with moderate gain. The analysis of LPDA using Method of Moments (MOM) has been carried out by modeling the array of dipoles and the feeder network separately. The effect of radius of dipoles on the directivity, front to back ratio, and VSWR has been investigated, and optimum design has been proposed. The performance has been improved by additing extra elements on either side of the array.

Indexing terms:

• Log periodic dipole array antenna
• Method of moments

Additional information

Notes on contributors

Sanjay Pandav

Sanjay Pandav was born in Hyderabad in 1976. He received BE in Electronics and Communication from University College of Engineering. Osmania University. Hyderabad in 1997 and MTech in Electrical Engineering with specialization in Communication Engineering from IIT, Bombay in 1999. From 1997 to 1998, he worked as a Software Engineer with DE Shaw India Software Private Limited, Hyderabad where he was engaged in developing Distributed Network Applications. Since March 2000, he is working as a Scientist ‘B’ with DLRL, Hyderabad where he is mainly working in design and development of Electronic Surveillance Systems. His main areas of interest are Electronic Warfare and Signal Processing. He is the recipient of Prof K K Nair Gold Medal, Dr Homi J Bhabha Gold Medal and Prof Revankar Prize.

Girish Kumar

Girish Kumar has received PhD degree from the Electrical Engineering Department, IIT Kanpur, India in 1983. From 1983 to 1985, he was a Research Associate at the University of Manitoba, Winnipeg, Canada. From 1985 to 1991, he was an Assistant Professor in the Electrical Engineering Department at the University of North Dakoa, Grand Forks, ND, USA. Since 1991, he is with Electrical Engineering Department at IIT, Bombay, India, where he is currently a Professor. His research interests are in the areas of microstrip anenna and arrays, broadband antennas, microwave integrated circuits, and EMI/EMC. He has published more than 100 papers in the national/international journals and conferences. Dr Kumar is a Senior Member of IEEE and Fellow of IETE.