EXPERIMENTAL STUDY OF MICROWAVE LOW-PASS FILTERS

Abstract

Kic'4nve 10 pass Piltera are finding extesive use in psr e " `rtc emphiers, x'adr, satellite ccmimtione solid state microwave devices etc. This thesis is an attpt towards the design and developnont of two microwave low-pass filters, having chebyehav transfer function for doubly tormi.. nated, smetrical and losQleee two port network using planar trenmission lines vie, micro strip and strip Vie. The first one is a microetrip I- el et low page filter using teflci as dielectric operating at 2.0 GUs and other in a strip line elmrmt low pass filter using Rexolte 2200 dielectric substrate operating at 1.bGUs. Ctieter I deals 4th the historical . v opml t end the classification of the filters. mfferent planar thmsie4on lines Bch arc used in the Zabrioatien of microwave inter ted circuits have also been discussed in this section. Ater 11 deecribse the various design tec i ues which are generallyused the design of micas Lt]ters. In Chapter- ' XIX design procedure of microwave law- pass filters using planar traneeieaion 'des has been discussed. Details of fabrication of filters are given in Chapter IV. iie chapter also deals 4th the determination of ' ,* 3. L R. and attenuation characteristics of the filters. The overall perforunce of t.e filters is also assessed in this