Introduction to Matching Networks and Phasing

Course Description
Table of Contents
SBE Recertification Credit
Enrollment Information

Course Description

At the heart of any AM transmission system is any number of matching networks that are used to impedance match the antenna to the transmission line and transmitter and provide proper inter-element current phasing. These networks, composed of mica and vacuum capacitors and plated coils that often sing with modulation, are the stuff of mystery. Many capable broadcast engineers who have not previously dealt with these components and networks approach them with some trepidation, as they have for decades been the realm of the consulting engineer, things not to be touched if at all possible. While there is wisdom in leaving a working system alone, any engineer responsible for the care and feeding of an AM transmission facility should understand the networks therein.

The purpose of this course is to give the student a good overall understanding of the various types of networks used in an AM transmission system, the situations in which each might be used and calculating the leg values thereof. It also discusses the phase budget for a phasing and coupling system and the use of power divider and phasing networks therein.

Matching, L and Tee Networks Practical Considerations for Matching Networks
Phase Shifting Networks and Power Dividers
Phase Budget
Network, Divider and Shifter Designs
Multi-Mode Systems

SBE Recertification Credit

The completion of a course through SBE University qualifies for 1 credit, identified under Category I of the Recertification Schedule for SBE Certifications.