HMC966LP4E

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RF Mixers

The HMC966LP4E is a high linearity, low noise performance double balanced active mixer for microwave radio applications. It operates in the Frequency range from DC to 6 GHz with user-selectable LO frequency. This mixer offers typical conversion loss of 11.5 dB, typical isolation of 20 dB, and low LO-to-RF leakage of -45 dBm. This balanced mixer can also be used as a phase detector or a LO multiplier.

Application Fields

The HMC966LP4E is a device designed for a wide range of radio frequency (RF) applications. With 13 dBm 1dB compression point of conversion gain and low harmonic distortion, it can be used in a variety of transceiver designs in telecommunication systems. It is especially suitable for high linearity applications such as direct up-conversion mixers in software-defined radio projects. The device can also be employed in wireless infrastructure for up/down-conversions of high-level inputs and in frequency demodulation and sensing applications. Additionally, using the mixer as a phase detector, it is well suited for tracking and phasing locks in digital radio systems.

Working Principle

The HMC966LP4E is a surface mount passive diode double balanced mixer with an integrated amplifier circuit blocks. The mixer combines two signals in the frequency domain, one signal being the local oscillator (LO) frequency and the other being the received signal (RF). The LO is applied directly to the input of the double balanced diode mixer and the RF is applied to the output of the balun of the amplifier circuit. By rectifying the differential input current, the LO signal is converted to a DC voltage drive signal for the amplifier circuit and provides the linearity and gain. The amplified RF signal is recombined with the amplified LO signal and the resulting I/Q signal is output in the form of an I/Q demodulated signal.

Conclusion

The HMC966LP4E active mixer combines a galvanically-isolated high performance double-balanced active diode mixer and an integrated amplifier circuit block in a small four-lead package. It provides low-power linearity and low noise suitable for high-level up/down-conversion of RF signals and for demodulating and performing baseband signal processing. It is an ideal choice for use in a wide range of RF applications from as low as DC up to 6 GHz.

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