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RF Amplifiers

The HMC8121 amplify-and-switch MMIC offer both amplification and high power switching capability in a single device. It is a wideband MMIC with 30 dB gain and 40 dB of OIP3 from 8 to 12 GHz. The dynamic range provides high gain at low power and low distortion for high power applications.

Application field

The HMC8121 MMIC is suitable for a broad range of RF applications, such as point-to-point communication systems, broadcast repeaters, indoor distributed antenna systems (DAS), and wireless base station applications. It is also used in automotive radar systems, satellite earth station antenna systems, and other high power applications where high gain and low distortion are required.

Working principle

The HMC8121 MMIC uses a combination of two amplifier stages to provide gain and linearity. The first stage is a broadband, low noise amplifier (LNA) that has a low voltage noise figure. This stage provides gain, as well as the input impedance matching. The second stage is a medium-power amplifier (MPA) that provides additional gain and linearity. The output power is further enhanced by the use of an additional high power GaN transistor.

The MMIC is designed to operate in the 8-12 GHz frequency range, and provides gain up to 30 dB. It also has a high output third-order intermodulation product of up to 40 dB. The MMIC also provides a high power switch, with up to 25 dBm or +47 dBm peak power. This switchable feature provides a wide dynamic range and increases the range of design options.

The HMC8121 MMIC is an ideal solution for high power, high gain applications. It is regarded as one of the best MMICs on the market, offering superior performance and flexibility for any RF design.

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