| Amplifier Type |
Description |
Typical Applications |
| Broadband Amplifier |
Designed to provide moderate gain over a wide bandwidth while maintaining a low noise figure. |
Front-end of receivers (antenna input), general-purpose gain stage where low noise is needed. |
| Gain Block Amplifier |
Similar to broadband amplifiers but optimized for higher gain rather than low noise. |
IF, RF, and microwave transmitters; available in narrowband and broadband versions depending on usage. |
| Logarithmic Amplifier |
Outputs a voltage that is the natural logarithm of the input voltage. |
Specialized applications where logarithmic response is required, such as signal strength measurement. |
| Variable Gain Amplifier |
Offers controllable gain, sometimes programmable. Gain adjustment via gain circuitry or attenuator. |
Closed-loop systems, power level management in signal paths, also called linear-to-log converters. |
| Low Noise Amplifier (LNA) |
Amplifies low-power signals with minimal added noise or phase noise. |
Oscillator output amplification, antenna input boosting for easier demodulation and digitization. |
| Coaxial & Waveguide Power Amplifier |
Used in transmitter RF front-end to boost signal power for antenna transmission. |
Radar, communication systems, especially where signal quality must be preserved at high power levels. |
| Linear Amplifier |
RF power amplifier with high linearity ensuring proportional input-output relationship. |
High-linearity required transmitters and test equipment. |
| Bi-Directional Amplifier (BDA) |
Combines transmitter and receiver, used to relay weak signals. |
Extending communication range in remote areas, indoor or underground signal relays. |
| High Reliability Amplifier |
Built to exceed reliability standards, robust performance under extreme conditions. |
Automotive, aerospace, space, military/defense where long-term reliability is critical. |
