ASI Point Contact Mixer Diodes are designed for applications from UHF through 26 GHz. The overall noise figure is expressed by the following relationship: NF, = L,(NR, + NF, - 1) NF, = overall receiver noise figure NR, = output noise temperature ratio of the mixer diode NF,, = noise figure of the I.F. amplifier (1.5dB) L, = conversion loss of the mixer diode IF IMPEDANCE VS. LO POWER 500 475 \ 450 \ 425 \ 400 IF IMPEDANCE, Z,(OHMS) 375 SC 325 ~ INQ -10 8 6 4 -2 0 2 4 6 LO POWER LEVEL (dBm) NOISE FIGURE VS. LO POWER 3.0 7.8 -. NOISE FIGURE (dB) N SS a 64 ae -10 8 6 4 2 o 2 4 6 LO POWER LEVEL (dBm) SILICON POINT CONTACT MIXER DIODES 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 Stripline applications. 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: 1. Conversion Loss-AL, = 0.3dB maximum 2. IF Impedance-AZ,,= 25 OHMS maximum NOISE FIGURE VS. FREQUENCY 75 IF = 30 MHz NF, = 1.5 dB R, =220HMS P., = 1 mW of 1 3 5 7 3 an) 13 15 17 FREQUENCY (GHz} NOISE FIGURE (dB) rN o VSWR VS LOCAL OSCILLATOR POWER 2.0 F = 9.375 R = 22 OHMS . ti VSWR (RATIO) O41 O41 1.0 10.0 LOCAL OSCILLATOR POWER (mw) These mixer diodes are categorized by noise figure at the designated test frequencies from UHF to 26Ghz. BAND UHF FREQUENCY (GHz) Up to 1 1to2 2to4 4to8 8 to 12.4 u 12.4 to 18. 18.0 to 26. AAKO NIT 0 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. ADVANCED SEMICONDUCTOR, INC. 7525 ETHEL AVENUE - FAK (818! NORTH HOLLYWOOD, CALIFORNIA 765 3004 91605 - USA. 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