This fouth addition to the design guide series is not merely a serial to the first guide, Practical Filters and Couplers . Like the first article collection, this guide gathers articles of interest to both novice and experienced designers wishing to read how others have solved classic filter and coupler problems. But although this collection includes tutorials of broad interest, it contains more articles covering tunable structures and couplers than its predecessor.

Transmission Zeros in Filter Design is a review of a simple but important and often overlooked concept. The article contains not one equation, but it teaches the reader how to predict the attenuation characteristics of a filter by glancing at the schematic. Coupling Bandwidth and Reflected Group Delay Characterization of Microwave Band-Pass Filters provides an alternative approach to a classic paper by Dishal on the tuning of coupled resonator filters. Filters and an Oscillator Model Using a New Solenoid Model describes a new class of filters and an oscillator using a solenoid model first described in a paper reprinted in the predecessor to this collection.

The next four articles, An Efficient Procedure for Narrowband Band-Pass Filter Design, Practical Microwave Filter Design, Construction of High-Reliability, Low-Loss Microwave Filters, and Dual Mode Microstrip Filters provide design procedures for both waveguide and planar distributed filters. Quick Filter Design and Construction describes how a hairpin microstrip filter was created from start to a PWB in a matter of hours.

The next four articles Design of a Simple Tunable/Switchable Band-Pass Filter, Electronically...