MPSH24

3

Motorola Small–Signal Transistors, FETs and Diodes Device Data

Figure 7. VHF Mixer Test Circuit

(fif = 44 MHz, B.W. = 6.0 MHz)

10

dB

10

dB

10

dB

fsig

fosc

INPUT

C1

C2

L1

C3

–VEE

470 pF

470 pF

C4

L2

L3

C5

470 pF

470 pF

5.6

mH

5.6

mH

+20 V

RL = 50 W

0.002

mF

60 MHz

TRAP

10 k

fsig

60 MHz

105 MHz

1.5–20 pF

8.0–60 pF

8.0–60 pF

3.0–35 pF

1.5–20 pF

5 Turns #26

Air, Tap 1 Turn

10 Turns #26

Air

fosc

Ohmite Z235

213 MHz

258 MHz

1.5–20 pF

6.0–12 pF

1.5–20 pF

—

—

3 Turns #16

Air, Tap 1/2 Turn

10 Turns #26

Arnold A1–10

Core

—

C1

C2

C3

C4

C5

L1

L2

L3