Microwave-based Communications Platform To The Microwave Filter Analysis And Design

MCI is a five-year high principles of electronic communications professional one of the core curriculum, the focus on vocational training of students is thinking of the ability to speak, to determine the development of microwave communication principles of experimental platform for practical training. The platform will be able to complete the microwave communications system to send and receive letters experiments reproduced the entire process of microwave communication systems and modules to complete the circuit experiment.Take teaches full completely needs as the principle, the union industrial application and the modern ADS simulation development technology, the choice has high selective, the low loss, the small volume as well as the low cost parallel coupling honeycomb wire tapping type microstrip filter. The tap type input output unit, the structural style is compact, the design method is flexible. Because the equivalent circuit law analysis's precision is bad, the debugging difficulty to be big, the development cycle is long, but unifies with the high frequency electromagnetism simulation software, may increase the design precision, reduces the development cycle.The purpose of this paper gives the deeper research of tapped line microwave filters, to provide the fast and precise design for the kinds of filters. The main works are as follows:1.The paper systematically describes basic concepts and theories that form the foundation for design of general microwave filters. The topics will cover filter transfer function, low pass prototype filters, frequency transformations, immittance inverters and the pass band insertion loss under the influence of the dissipation of filter elements.2.The tapped line I/O block and the internal coupling structure is systematically analyzed. Two methods of analysis and design programs of filters are given.3. The union concrete design, applies in the quality microwave passes faithfulness to teach in the platform, and develops the corresponding experiment.In all, the paper systematically studies the tapped line microwave filters. The filters with compact size and good property are great suitable for the engineering. And has well may the setting range, has guaranteed the experiment parameter need effectively.