期刊名称：International Journal on Electrical Engineering and Informatics
印刷版ISSN：2085-6830
出版年度：2014
卷号：6
期号：1
DOI：10.15676/ijeei.2014.6.1.12
出版社：School of Electrical Engineering and Informatics
摘要：The experimental characterization in exploiting the property of microwavedevices is an essential complement to theoretical and/or simulation works. Thus, theneed of instrument for the characterization is becoming unavoidable thing to beestablished. This paper reports the development of test-fixture in form of a parallel platewaveguide (PPW) to characterize the reflectivity and/or transmittivity of microwavedevice whereby the property of reflection and/or transmission can be achieved undernormal incidence. Since the PPW is excited using a rectangular waveguide, a transitionsection which connects the rectangular waveguide and the PPW needs to be investigatedto have an optimum performance required for microwave devices characterization. Thetapering effect of transition section is examined and analyzed numerically in yieldingthe influences to the test-fixture performance. Here, a WR248 type rectangularwaveguide which has working frequency of 2.60GHz to 3.95GHz for TE10 mode is usedas coaxial-to-waveguide transducer for exciting the PPW. The result shows that thelinear-tapered transition has better performance in term of bandwidth compared to thestep-tapered one. In addition, the discussions of taper length and number of step-taperedtransition related to the performance of test-fixture as well as the experimentalcharacterization for linear-tapered transition are also presented.
