By Topic

ENVELOP Antenna: A Class of Very Low Profile UWB Directive Antennas for Radar and Communication Diversity Applications

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Elsherbini, A. ; Electr. Eng. & Comput. Sci. Dept., Univ. of Michigan, Ann Arbor, MI, USA ; Sarabandi, K.

In this paper we present the concept of new electrically narrow very low profile (ENVELOP) directive antennas for low frequency radars and diversity communication applications. The basic structure consists of a short TEM horn combined with an inductive loop antenna. The proposed antenna height is 0.063 where is the minimum operating wavelength and has good matching and radiation characteristics over more than an octave. It is based on the principle of crossed electric and magnetic dipoles with a TEM horn as the electric dipole and a sheet loop as the magnetic dipole. However, unlike the standard structures, the proposed structure is designed to enhance the radiation in a direction perpendicular to the TEM horn axis. This limits the maximum pattern bandwidth to about one octave but allows the antenna height along the direction of maximum radiation to be very small which is very important for airborne radars and in low frequency military communications that require conformal antennas. Three different variations of the basic structure are also presented which offer improved pattern characteristics and/or pattern and polarization diversity. Two antennas were fabricated and measured. The measured results agreed well with the simulation results and both showed that the antenna can operate over 1-2 GHz with consistent radiation pattern, low dispersion and input impedance matching performance.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:61 ,  Issue: 3 )