Broadband Millimeter-wave Microstrip Line to Waveguide Transition
نویسندگان
چکیده
Millimeter-wave antennas have been developed for applications of broadband high-speed wireless communication systems and automotive radar systems in these days. Microstrip antennas (MSA) are more advantageous than other millimeter-wave antennas at the viewpoints of low-profile and low-cost. The antenna is connected to the backed RF circuits through the waveguide in the millimeter-wave module as is shown in Fig.1. Therefore, microstrip line (MSL) to waveguide transition (MSL-WG transition) is required at the connection of the waveguide and the antenna feed[1][2]. We propose a novel MSL-WG transition which covers more than 25% frequency bandwidth for the uses of broadband applications and wide tolerance in manufacturing. We designed the MSL-WG transition by using an electromagnetic simulator. Performance and applicability are confirmed by measurement in the millimeter-wave band.
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