HMC399MS8E

RF Mixers

The HMC399MS8E is a type of RF mixer that is used to convert RF signals from a familiar frequency range to a higher frequency range band for further amplification. The name of the device comes from the combining of two signals to create an output signal with the sum and difference frequencies of the two original signals. The mixer also converts the signal from the low frequency, near antenna RF signals, into frequencies suitable for the architecture of the receiver system.

Application Field

The HMC399MS8E is most commonly used in wireless communications systems as it is a cost-effective solution for the task of frequency up-conversion. This is a vital job in any wireless communication system as it is used to convert low frequency signals from the antenna to a higher frequency band for the receiver to pick up. It is also used in radio receivers as a means of extracting the signal from the powerful undesired signals.

Working Principle

The RF mixer works by combining two frequency signals. These two signals are linked to a device known as a multiplier, which digitally multiplies the two signals together. This then creates the sum and difference frequencies across the output ports of the mixer. The low frequency output is attenuated by the device. As a result, the higher frequency signal is then forced through an amplifier to drive any further stages and then outputted.

The HMC399MS8E is an ideal device for this process, as the device itself features a very high input IP3 linearity. Additionally, the device also offers the protection of an integrated EMIFET circuit. By using this device, the incoming signal is attenuated, but also with excellent IP3 linearity so that noise is significantly reduced. This helps minimizing any system noise due to the conversion process.

Moreover, all of the conversion is done on-chip, meaning that there are also minimal circuit components required to make the mixer work, signifying that the mixer can be economical and reliable in comparison to other mixers. Furthermore, it is also designed with an internal self-calibration feature, which means that the device is easy to integrate and setup, whilst also providing excellent linearity.

Conclusion

To conclude, the HMC399MS8E is an RF mixer suitable for frequency up-conversion. The mixer offers a highly linear output and is also designed with a self-calibration feature. This allows users to easily set it up and is a economical choice when compared with other RF mixers.