Summary
International Symposium on Antennas and Propagation
2008
Session Number:4C33
Session:
Number:4C33-2
Designing a Linear Microstrip Array for Broadside Radiation Using the Leaky Wave Approach
Adrian Sutinjo, Michal Okoniewski, Ronald H. Johnston,
pp.-
Publication Date:2008/10/27
Online ISSN:2188-5079
Summary:
The topic of designing a traveling wave linear microstrip array (TLMA) is a classical one and has been discussed in detail [1]. However, the conventional design technique treats each radiating element individually, and subsequently accounts for the mutual coupling effects as the array is designed. The possibility of designing a TLMA using the leaky wave (LW) approach was suggested in [2], though an example was not given. Using the LW approach, the mutual couplings are inherently accounted for and the radiation behaviors can be concisely described using the leaky wavenumber kLW = β - jα [2]. Broadside radiation can be achieved using a symmetric (center-fed) TLMA [1] and also a symmetric leaky wave antenna (LWA) [3, 4]. In this paper, we apply some of the LW theoretical analyses presented in [3, 4] to the design of a 1-D TLMA for broadside radiation. Note that in the LW approach, the influence of the truncation effects is usually neglected since the antenna is assumed to be infinitely long [3, 4]. In contrast, the influence of the finite antenna length and the associated end terminations are considered here.