Low Frequency Tuners


The low frequency tuners are a unique product technology using MPT algorithms for low frequency wideband tuning. Three or more cascaded tuning sections use series transmission cables and parallel rotary capacitors.

The length of the cables and number of tuning sections are optimized for maximum tuning range over a given bandwidth. HLFT tuners use 6 tuning sections allowing second harmonic frequency tuning.

A multi-band, electro-mechanical programmable impedance tuner for the frequency range between 10 and 200 MHz uses cascades of three or more continuously variable mechanical capacitors interconnected with sets of low loss flexible or semi-rigid cables; for each frequency band a different set of cables and capacitors are used. The cables and/or variable capacitors inside each tuning block are switchable manually or remotely. Multi-section variable capacitors are also used. Instantaneous impedance tuning is effectuated by changing the state of the capacitors using electrical stepper motors. The tuner is calibrated using a vector network analyzer and the data are saved in the memory of the control computer, which then allows tuning to any user defined impedance within the tuning range. Reflection factor values between O and higher than 0.9 can be obtained using this tuner at all frequency bands.

Low Frequency Tuners
Model Min Frequency Max Frequency Type Datasheets Request Quote
wdt_ID Model Min Frequency Max Frequency Type Datasheets Request Quote
118 LFT-002001 10.0 20.0 Fundamental
120 LFT-004002 20.0 40.0 Fundamental
121 LFT-006003 30.0 60.0 Fundamental
122 LFT-008004 40.0 80.0 Fundamental
123 LFT-01005 50.0 100.0 Fundamental
124 LFT-013006 60.0 130.0 Fundamental
125 LFT-0170130 130.0 170.0 Fundamental