ASI Point Contact Mixer Diodes are designed for applications from UHF through 26 GHz.
The overall noise figure is expressed by the following relationship:
NF0 = Lc(NR0 + NFIF - 1)
NF0 = overall receiver noise figure
NR0 = output noise temperature ratio of the mixer diode
NFIF = noise figure of the I.F. amplifier (1.5dB)
Lc = conversion loss of the mixer diode
They feature high burnout resistance, low noise figure and are hermetically sealed. The are available in
DO-7, DO-22, DO-23 and DO-37 package styles which make them suitable for use in Coaxial, Waveguide and
These diodes are available as matched pairs and are supplied in either forward pairs (M) or
forward/reverse pairs (MR). The matching criteria for these mixer diodes is:
- Conversion Loss-DLc = 0.3dB maximum
- IF Impedance-DZIF = 25 OHMS maximum
These mixer diodes are categorized by noise figure at the designated test frequencies from UHF to 26Ghz.
||Up to 1
||1 to 2
||2 to 4
||4 to 8
||8 to 12.4
||12.4 to 18.0
||18.0 to 26.5
All of the point contact mixer diodes meet or exceed the military environmental specifications of MIL-S-19500,
MIL-STD-202 and methods from MIL-STD-750 that specify mechanical, electrical, thermal and environmental tests.