Ka-Band LNA MMIC exhibits 1.7 dB noise figure with low power dissipation

Ka-Band LNA MMIC exhibits 1.7 dB noise figure with low power dissipation

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By eeNews Europe

This amplifier delivers high performance with high efficiency, reducing typical industry DC power dissipation for a device in this frequency band from approximately 340 mW down to 50 mW.

The CMD162 also offers subsystem and device designers a key cost reduction attribute. Implementation is simplified since the device only requires positive drain and gate voltages of +2 V, thereby eliminating the negative voltages and sequencer circuits commonly associated with LNAs in this frequency range. The amplifier can be biased with a drain voltage ranging from +1 to +4 V and a gate voltage ranging from 0 to +3 V.

The amplifier die measures 2.3 x 1.3 mm, includes gold backside metallization, and has full nitride passivation for increased reliability and moisture protection. It can handle input signal levels to +20 dBm. The GaAs MMIC amplifier has typical input return loss of 18 dB and typical output return loss of 20 dB, both at 30 GHz. It is a much smaller, lower-cost alternative to hybrid LNAs for this frequency range, and is uniquely suited for both narrowband and broadband applications requiring small size and low current consumption, including phased-array radar and point-to-point microwave radio systems.

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