Title :
Near-field wideband frequency invariant beamformer design for circular antenna arrays based on convex optimization
Author :
Liao, Yanping ; Raza, Ahsan ; Wang, Huiqiang ; Yang, Shenyuan
Abstract :
In this paper, a convex-optimization based design method is proposed to solve the near-field wideband beam former design problem with frequency invariant response. The objective is to find the weight vectors required for a uniform circular array capable of forming a beam with a pre defined side lobe attenuation level with desired frequency invariant response over a frequency band of interest against a particular target frequency for an arbitrary focal point within a given scanning area. Design examples have been provided for simulated results.
Keywords :
antenna arrays; array signal processing; convex programming; circular antenna arrays; convex optimization; frequency invariant response; near-field wideband beam former design problem; near-field wideband frequency invariant beamformer design; side lobe attenuation level; uniform circular array; weight vectors; Wideband; Convex Optimization; Frequency Invariant Beam forming; Near-field beam pattern; Spatial Response Variation; Tapped Delay Line; Wideband beam forming;
Conference_Titel :
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2011
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-9792-8
DOI :
10.1109/CSQRWC.2011.6037216