A Low-Profile Equiangular Spiral Antenna Using a Novel EBG Ground Plane

Author

Li, Zhong ; Wang, Guangming ; Cao, Yi

Author_Institution

Missile Inst., Air Force Eng. Univ., Sanyuan

fYear

2006

fDate

26-29 Oct. 2006

Firstpage

1

Lastpage

3

Abstract

In this paper, we adopt a novel electromagnetic band-gap (EBG) ground plane to reduce the profile of planar equiangular spiral antenna. The novel EBG structure is notched on every unit cell to form a square loop, combining the virtue of mushroom-like structure and tunable structure, which is not found in the correlative literatures. The lower resonant frequency means reducing the size of EBG cell in the same band-gap frequency. The novel EBG structure can emulate well a perfect magnetic conductor (PMC). The combination of EBG and equiangular spiral antenna produces a low-profile, high gain and wide-band antenna.

Keywords

antenna radiation patterns; broadband antennas; photonic band gap; spiral antennas; PMC; electromagnetic band-gap ground plane; low-profile equiangular spiral antenna; mushroom-like structure; novel EBG ground plane; perfect magnetic conductor; radiation performance improvement; resonant frequency; tunable structure; Capacitors; Conductors; Frequency selective surfaces; Inductors; Lattices; Metamaterials; Periodic structures; Photonic band gap; Spirals; Tunable circuits and devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas, Propagation & EM Theory, 2006. ISAPE '06. 7th International Symposium on

Conference_Location

Guilin

Print_ISBN

1-4244-0162-3

Electronic_ISBN

1-4244-0163-1

Type

conf

DOI

10.1109/ISAPE.2006.353349

Filename

4168038