Title :
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
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;
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
DOI :
10.1109/ISAPE.2006.353349
