Title :
Accuracy Compensation in Direction Finding Using Patch Antenna Array With EBG Structure
Abstract :
This letter discusses a direction finding using a patch antenna array with an electromagnetic band-gap (EBG) structure. The super-resolution algorithm MUSIC is considered as an example of an adaptive nulling. Our numerical investigation shows the accuracy and depth of MUSIC spectrum is degraded due to the perturbation of surface wave, which is attributed to the insertion of EBG structure. Then, a simple compensation scheme is proposed for an appropriate direction finding, and its effectiveness is demonstrated computationally.
Keywords :
microstrip antenna arrays; numerical analysis; photonic band gap; radio direction-finding; MUSIC; accuracy compensation; adaptive nulling; direction finding; electromagnetic band gap structure; patch antenna arrays; superresolution algorithm; surface wave perturbation; Antenna arrays; Antennas and propagation; Degradation; Geometry; Metamaterials; Multiple signal classification; Mutual coupling; Patch antennas; Periodic structures; Signal processing algorithms; Adaptive nulling; array calibration; mutual coupling of antennas; steering vector;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2005.863609
