Abstract
Half-Mode Substrate Integrated Waveguide Yagi Array with Low Cross Polarization
Highlights
With the development of satellite communications, antennas achieving compact size, low profile, high gain, specific radiation patterns and ease integration with planar circuits are highly demanded
We introduce the half-mode substrate integrated waveguide (HMSIW) as the driven element of Yagi antenna
Due to the asymmetrical structure and field distribution, the Yagi arrays composed by the HMSIW Yagi antenna with different arrangements have different radiation characteristics
Summary
With the development of satellite communications, antennas achieving compact size, low profile, high gain, specific radiation patterns and ease integration with planar circuits are highly demanded. By duplicating the microstrip Yagi antenna perpendicular to the projective direction of the tilted beam, linear arrays would be obtained [5,6,7] This method of array arrangement is mainly used to achieve a high gain greater than 10 dBi. In addition, electronic scanning could be achieved by feeding each element with calibrated phase shifters [6]. Combined with the switching elements, such as single pole three throw switches and pin diodes, the crossed Yagi arrays have reconfigurable radiation patterns covering the full azimuth plane. These different methods of array arrangement provide more performance features for the Yagi array. The four-element array with mirrored arrangement is fabricated and measured, and the experimental results validate the simulation
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