Summary
International Symposium on Antennas and Propagation
2010
Session Number:3TA4
Session:
Number:3TA4-5
Proposal and Preliminary Study of a Partially Driven Array Antenna Using Transmission Line Coupling
Hiroyuki Hosono, Kenji Saegusa, Tadashi Takano,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
In the former partial drive technique, which contributes to the cost reduction of array antenna (AA), a part of the whole radiating elements were driven, and the rest were excited by spatial coupling[1][2]. This technique can realize the performance approximately equivalent to that of a fully driven AA. But the configuration is limited in design freedom due to spatial coupling. In that case, it is necessary to optimally determine the height and the spacing of elements. In this paper we propose a method to connect the driven and parasitic elements by using a transmission line in order to get sufficient coupling even in a printed antenna. Impedance matching can be achieved by adjusting the transmission line, as is effective to realize low profile antennas. This paper shows that a partially driven AA(PD-AA) using transmission line coupling can realize almost the same characteristics as a fully driven AA, and a meander transmission line can decrease the distance between antenna elements so that the grating lobe can be reduced.