By Dhanasekharan Natarajan
This publication provides the applying of microwave literature for designing lumped/semi-lumped filters and combline/iris-coupled microwave hollow space filters. It presents the actual figuring out of the phrases and features of radio frequency (RF) filters. The publication enhances engineering textual content books on RF parts and gives help for the venture assignments of scholars. as well as the practical layout of RF filters, the built-in layout process for produceability and reliability is explained.
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Additional resources for A Practical Design of Lumped, Semi-lumped & Microwave Cavity Filters
60 dB min. Band pass filter Parameter Limit Centre frequency fo Pass band Insertion loss Return loss Pass band ripple Rejection at fo ± 100 MHz 1 GHz fo ± 40 MHz 1 dB max. 20 dB min. 4 dB max. 60 dB min. 5 GHz 60 dB min. 8 1 dB max. 20 dB min. 2 Sample Electrical Specifications of Filters 29 Pass band, Pass band ripple, Insertion loss, Return loss, and cut-off frequency are pass band characteristics whereas rejection is stop band characteristic of filters. The method of specifying filter characteristics could vary among equipment designers.
The L-C circuit configurations for lumped RF filters are presented with the functioning of the circuits. The concept of semi-lumped RF filter, resonance in microwave coaxial cavity, combline and iriscoupled cavity filters are technologies are explained in detail. Information regarding power handling capacity, equivalent circuit and factors to minimise insertion loss of cavity filters are provided. The basic microstrip and stripline circuit and the computer aids for designing the filters are also explained.
End resonant cavity sections are coupled to input/output coaxial connectors. Combline and iris-coupled microwave cavity filters are quite popular in industrial applications. Combline filters use k/8 resonators and iris-coupled filters use k/4 resonators at resonant frequency. 2 Combline and Iris-Coupled Cavity Filters In microwave cavity filters, air is the dielectric medium of transmission and the filters do not require any dielectric support. The filters are characterised by low insertion loss with high rejection making them suitable for high power applications.
A Practical Design of Lumped, Semi-lumped & Microwave Cavity Filters by Dhanasekharan Natarajan