Abstract
On the base of gap waveguide (GWG), a transition is designed between microstrip line (MSL) and waveguide at W-band in this paper. The proposed MSL to waveguide transition consists of MSL, groove GWG, ridge GWG and WR-10 waveguide. The electromagnetic waves propagate from MSL to substrate integrated waveguide (SIW), then the energy transfer from SIW to groove GWG by two metallic pins to coupled electromagnetic waves. Then, the groove GWG is connected to the ridge GWG. Finally, the ridge GWG probe is applied for WR-10 waveguide transition. For the groove GWG and ridge GWG, ball-grid-array (BGA) play a significant role of improving performance, and limit the energy transmission over the path we have designed. The simulated results show the operating frequencies of the proposed transition are from 85.5 to 104 GHz. The proposed transition has advantages of light weight and low profile, and has potential applications in antenna in package.
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