ERI manufactures UHF television band pass filters in both reflective and constant impedance configurations. Th company builds a complete suite of accessory products including switches, directional couplers, hybrid power combiners, and RF loads.
UHF Band Pass FiltersThe UF Series UHF band pass filters are tunable and exceptionally efficient available in models to accommodate 100 watts to 50 kilowatts. The filter is constructed of lightweight silver plated Aluminum with silver plated Brass resonators. The Evanescent coupled TEM resonators are durable and provide a rugged design that tunes easily. Tuning elements are designed with the tuner in mind, allowing precise tuning for today’s stringent applications in significantly less time for additional cost savings. Multiple cross couplings are provided to increase rejection of transmitter out of band emissions. Six and eight pole designs are available for 8-VSB and COFDM applications.
UHF Low Pass Harmonic FiltersERI high rejection UHF low-pass harmonic filters are designed for transmitter power levels up to 39 kW, average power. Chebyshev design parameters define element values that provide 40 dB or greater rejection at the second harmonic and 30 dB or greater rejection at the third harmonic.