If you work on the Technical Side of the Radio Broadcast Industry, this is your gateway to the hardware of your profession. There are articles on FM transmitters, RDS and stereo encoders, SNMP managements systems and a section on broadcast related filters. See also the Broadcast Tools site for filter design, power combiners and microwave topics
The combiner choice has been expanded to include multi-step Wilkinson with different transformer profiles, conversion to a microstrip format is possible. This quarter also sees the addition of a parallel coupled filter designer. This is a rehash of desktop api developed for a sponsor. In this first release only generic parallel coupled line filters is run through. A further section of the microwave parallel coupled line filter calculator has been released. Now the generic design can be converted into microstrip, stripline and for power users the slabline format. Catalog options are provided so the physical dimension on a real substrate are given.