HMC387MS8

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RF mixers are a key part of any radio communication system. They are used to modulate a carrier signal, which is then transmitted as a baseband signal to another receiver. The HMC387MS8 is a balanced active mixer which is designed for use in radio systems operating from 100 MHz to 450 MHz. It is fully balanced to minimize noise and has a good linearity, making it ideal for application in high-frequency systems.

The HMC387MS8 mixer is based on a Gilbert Cell topology, which is a balanced mixer circuit composed of two matched, complementary FET transistors. It is designed to provide a low-noise mixer with high linearity in both the input and output stages. The mixer has a wide dynamic range, meaning it can provide good signal fidelity and low distortion for both strong and weak input signals. It is also low-cost and has a wide selection of components, making it an appealing option for applications like cable TV and cellular communication systems.

The HMC387MS8 also features an integrated third order intercept point of +20dBm. This allows the mixer to reject strong input signals without clipping, resulting in better signal fidelity and overall performance. The mixer is also equipped with a wide range of gain, balancing, and control features, which enable it to optimize its performance based on the input signal.

The HMC387MS8 has a wide range of application fields, including base stations for cellular and satellite communication systems, mobile radios, microwave point-to-point systems, commercial communications, cable TV, and navigation systems. It is also well suited for applications which require fast switching between different frequencies, such as Wi-Fi systems.

In terms of operation, the HMC387MS8 mixer works by receiving an input signal from the antenna and mixing it with a local oscillator frequency. This results in two output signals, which are shifted in frequency from the input signal by the local oscillator frequency. The shifted signals are then amplified with the gain stage, and then the combined, amplified signal is passed through the output stage.

The HMC387MS8 is an effective and versatile RF mixer, providing a balanced active mixer for a wide range of application fields and having a good linearity and low-noise performance. Its ability to reject strong input signals without clipping makes it ideal for applications where signal fidelity and overall performance are important. Additionally, its low cost and wide selection of components make it a good choice for many radio system applications, from cable TV to satellite communications.

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