Equalizer Amplifiers
2.0 GHz to 18.0 GHz
Special Purpose Amplifiers




    • Used as TWT Driver Amplifier
    • Frequency Coverage from 2 to 18 GHz
    • CTT Standard HX or FX Package
    • SMA Connectors
    • Designed for Military and Industrial Applications

Equalizer Amplifiers 2.0 GHz to 18.0 GHz Special Purpose Amplifiers
Traveling-wave tubes (TWTs) are the most common high-power microwave electron devices. They serve as the final output stage in nearly all communications satellites. They are also common in pulsed radar systems as well as in electronic-countermeasures (ECM) systems. The output characteristics of TWTs are rarely flat across frequency. For that reason, a line of solid-state driver amplifiers has been developed by CTT to include gain-equalization circuitry. The equalizers level the output characteristics of the TWT by feeding the tube with the virtual inverse of its amplitude response.

CTT’s solid-state equalizers integrate low-noise amplifiers (LNAs) with equalization circuitry, having frequency response tailored to a customer's need. CTT has developed units for frequency ranges of 2 to 8 GHz, 6 to 18 GHz, 7 to 17 GHz, 7 to 19 GHz, 18 to 26 GHz, and 26 to 40 GHz.

In units developed at CTT for use with 6 to 18 GHz TWTs, typical response includes 2 dB insertion gain at band edges and 8 to 14 dB insertion gain (four different options) at band center.

A customer only needs to supply a designated gain or power window for the tube for CTT's engineers to produce the appropriate equalizer for a specific TWT. The result is a compact, cost-effective method of leveling the output of a TWT.

CTT offers four options for amplitude response: 6, 9, 12, and 15 dB nominal gain at band center. Available output levels are +20 to +27 dBm. Equalizer insertion loss is 2 dB while VSWR is 2.0:1.

The TWT driver amplifiers are designed for use in microwave power modules (MPMs), and with TWTs, designed for high-power communications and electronic-warfare (EW) applications. The amplifier/equalizer modules are constructed with reliable MIC technology capable of handling up to 5000-G shock. They are rated for operating temperatures from -54°C to +85°C.