Interwoven Spiral Array (ISPA) With a 10:1 Bandwidth on a Ground Plane

Author

Tzanidis, Ioannis ; Sertel, Kubilay ; Volakis, John L.

Author_Institution

ElectroScience Lab., Ohio State Univ., Columbus, OH, USA

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

115

Lastpage

118

Abstract

We describe a novel, planar, circularly polarized (CP), interwoven spiral array (ISPA) having a 10:1 bandwidth while operating conformally on a perfect electric conducting (PEC) ground plane. The array is comprised of rectangular, self-complementary spirals. However, unlike typical array designs, the elements have their arms "interwoven" to enhance coupling. This coupling serves to mitigate the inductive effects contributed by the PEC ground plane. Consequently, the unit cell of the array encompasses several adjacent array elements. This feature leads to unique array properties, and in this letter, we pursue a numerical analysis and design of an array version that delivers a 10:1 bandwidth, for a broadside scan, in a conformal setting.

Keywords

antenna arrays; numerical analysis; spiral antennas; ISPA; PEC ground plane; adjacent array elements; coupling enhancement; inductive effect mitigation; interwoven spiral array; numerical analysis; perfect electric conducting ground plane; rectangular antenna; self-complementary spiral antenna; Antenna arrays; Arrays; Bandwidth; Broadband antennas; Impedance; Spirals; Conformal arrays; spiral antenna; ultrawideband (UWB) antenna arrays;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2010.2070786

Filename

5559323