Several types of Schottky diodes.
ACST offers several types of Schottky diodes, optimized for operation under zero-voltage conditions and suitable for operation at mm-waves and THz frequencies.
They differ in structure layout, dedicated frequency range and mounting approach. Low-barrier diodes are usually used in varistor mode, but with strongly reduced differential resistance under zero-bias conditions.
Lack of bias voltage allows for strongly reduced noise and low differential resistance allows for better matching with reading circuitry in microwave frequency range. ACST low-barrier diodes feature ultra-low differential resistance and high current responsivity. These parameters make ACST low-barrier diodes best suited for ultra-low noise radiometers and ultra-fast envelope detectors.
Apart of that these diodes can also be used for frequency mixers with low Local Oscillator requirements (frequency down-conversion), low-power frequency multipliers (frequency up-conversion), power detection, wireless power transmission, etc.