Analysis and Design of Coplanar Waveguideto （分析和设计的共面Waveguideto）.pdfVIP

Analysis and Design of Coplanar Waveguide- to-Rectangular Waveguide Transition With FDTD Method Jianqin Deng, Wanshun Jiang, Yuemin Ning, 41st Institute of China Electronic Technology Group Corporation National Key Laboratory of Science and Technology on Electronic Test and Measurement No.98 Xiangjiang Road Qingdao Economy and Technology Development Zone, 266555 P. R. China Jianqin_deng@126.com Abstract—A broadband Coplanar Waveguide-to- terminates is placed in an abrupt open circuit, while the Rectangular Waveguide transition is proposed in this two ground planes on either sides extend further and paper. The transition consists of a very thin metal ridge, meet at a short distance away from the open circuit with the shape like a square of cosine curve, located longitudinally on the bottom broadwall of a rectangular forming an isosceles triangular slot region and over the waveguide. The ridge guides the power to a slot of slot region a cosine tapered ridge extends from the top triangle cut in the center of the top broadwall of the broad wall of the waveguide, The transition introduced rectangular waveguide. This structure can result in a in [6] is a new approach. A dielectric substrate is used to smooth field transition between 70GHz and 120GHz. The carry the CPW into the rectangular waveguide via an simulation result is achieved by FDTD method, and the aperture in the center of the end wall. The CPW center result shows that the insertion loss is very low in the