products:

Function:
A Down-Converter translates an information carrying signal from a higher frequency to a lower frequency (IF or baseband), where it can be processed more easily or at a lower cost, by mixing the RF signal with a Local Oscillator (LO) signal to create a signal at the difference of these two frequencies. If LO is "high-side", i.e. higher in frequency than the RF signal, then the output is at f_LO - f_RF. If the LO is "lowside", or lower in frequency than the RF signal, then the output is at f_RF - f_LO.

Schematic Symbol:

Key Specifications Input Intercept Point Range: -20 to +15 dBm Undesired signals Range: -10 to -100 dBc Conversion Gain(or Loss) Range: -10 to +20 dB (-7 dB for diode mixers) Noise Figure Range: dBs to 10s of dBs LO Drive Level Range: -10 to >+17 dBm

Discrete Devices:

Schottky Diodes

Bipolar Transistors as active mixers

GaAs FETs as active mixers

Integrated Circuits:

ICs for Mixer Applications

ICs for millimeter wave Receivers

System Level:

HPMX-5001 upconverter-downconverter