Beam Steering Array Antenna by employing of Butler Matrix Feed and Broad Band Phase Shifterfor MM-Wave Application

In this paper, a compact broadband beam steering array antenna with a novel Butler matrix feed network ispresented. To overcome short-range effects on mm-wave frequencies, two techniques of broadside single-antennaelements and a feed network with a Butler matrix are presented. The single elements are compact zeroth-orderresonance antennas that are fed by the aperture feed technique. Proposed elements to have a structure such as ametamaterial mushroom can be used in low distance along with low mutual coupling. With this novel design comprising۱۶ (۴×۴) mentioned elements with ۰.۳۵𝜆 in between, a broadband and high-gain beam steering array antenna formaximum input of impedance bandwidth of ۳۲-۳۸GHz and a scan angle of about ~۹۳° was attained. The aim ofdesigning the proposed antenna is to implement a novel beam steering antenna that is high gain with a broadsidepattern. This text presents the simulated, measured step-by-step procedure for designing the proposed.

کلیدواژه ها:

Metamaterials ، Butler Matrix ، Array Antenna ، Beam steering