HMC476SC70

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High frequency amplifiers or RF amplifiers are the electronic components used to increase the signal strength of any radio signal. HMC476SC70 is a high-performance, wideband amplifier designed by Hittite Microwave Corporations. Its application field and working principle are listed as follows:

Application Field

The HMC476SC70 amplifier can be utilized in multiple applications such as cellular base station infrastructure, WiFi access points, satellite communication systems, terrestrial microwave radio links, and surface-mount test and measurement equipment. It delivers great gain at output from 0 dBm to +21 dBm, providing users with a wide range of choices to deliver sufficient power for their requirements. Additionally, the amplifier has a wide operating temperature range from -40°C to +85°C, withstanding a harsh environment and allowing flexibility in usage.

Working Principle

The HMC476SC70 amplifier follows the common source amplifier circuit topology. With a gate voltage GV of 0.14V, the device can be driven by a low amount of bias, and the noise figure is minimized due to the DC supply voltage of 5V and the low gate threshold voltage (<0.2 V). This topology is used in amplifying the microwave signals, as high frequency signal are required and low power consumption is essential. All the input and output ports are matched RF ports, eliminating the need of additional matching circuit and optimizing the overall performance.

The amplifier is made of bipolar junction transistors (BJTs) configured as common source, with resistors and capacitors integrated at the source and drains for frequency bias stability, further increasing the output power gain. Additionally, they are internally compensated to ensure stability of the amplifier.

In conclusion, the HMC476SC70 amplifier is a reliable and efficient high-performance wideband amplifier that can fit in different power amplifier applications. Its wide operating temperature range from -40°C to +85°C also ensures that it can adapt to any conditions. With the common source amplifier circuit topology, the amplifier circuit is simple and power consumption is low, making it an ideal choice for many application.

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