Performance Investigations of Quasi-Yagi Loop and Dipole Antennas on Silicon Substrate for 94 GHz Applications

Abstract EN

This paper introduces the design and implementation of two high gain Quasi-Yagi printed antennas developed on silicon substrate for 94 GHz imaging applications.

The proposed antennas are based on either driven loop or dipole antennas fed by a coplanar waveguide (CPW) feeding structure.

For better matching with the driven antennas, a matching section has been added between the CPW feedline and the driven antenna element.

To improve the gain of either loop or dipole antennas, a ground reflector and parasitic director elements have been added.

Two Quasi-Yagi antenna prototypes based on loop and dipole antenna elements have been fabricated and experimentally tested using W-band probing station (75–110 GHz).

The measured results show good agreement with simulated results and confirm that the proposed antennas are working.

In addition, a feed and matching configuration is proposed to enable coupling a microbolometer element to the proposed Quasi-Yagi antenna designs for performing radiation pattern measurements.