Utilizing Advanced Filter Topology as Your New Switch

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Originally Aired - Tuesday, April 18   |   10:40 AM - 11:00 AM PT

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In a typical television or radio RF system a switch is introduced between the filter and transmission line. The switch gives the broadcaster the capability of proofing the transmitter into the RF load, or when trouble shooting high VSWR they can switch into load to determine if the problem is in the filter or transmission line and antenna. The switch is an additional path and an electronic device. What if you could eliminate that electronic component from the system but still have the same benefits all while having less parts?

In this paper, we will look at new filter technology that will allow the filter to serve as a path to proof the transmitter and/or trouble shoot the system. We also examine the added benefit of doing this for all filters in a combiner. Typically, a master combiner has a station load at the output, but this new topology would introduce the load at the filter level, which will increase the broadcaster’s troubleshooting capabilities and allow the other stations in the combiner to remain on the air while the transmitter is getting proofed on the new station.   

Presented as part of:

Radio Technology


Michael Spugnardi
Director of RF Systems and Components