C1, C6

240 pF, 100 mil Chip Capacitors

C2

15 pF, 100 mil ATC Chip Capacitor

C4, C5

1 – 10 pF, Johanson Trimmer Capacitors

C3

24 pF, 100 mil ATC Chip Capacitor

C7, C9

0.1

mF, 100 mil Chip Capacitors

C8

220 pF, 100 mil ATC Chip Capacitor

C10, C11 680 pF, Feed Through Capacitors

C12

50

mF, 50 V Electrolytic Capacitor

C7

R3

RFC2

RFC1

RF Output

DUT

R1

C1

RF Input

C2

Figure 1. MRF160 500 MHz Test Circuit

R2

C3

C6

C5

C9

C10

C12

+

C8

VDD 28 V

+

VDC

R1

200

Ω, 1/2 Watt

R2

10 k

Ω, 1/2 Watt

R3

1 k

Ω, 1/2 Watt

RFC1

Ferroxcube VK200–19/4B

RFC2

8 Turns, #20 AWG, Enameled, ID 110 mils

Board Material — 0.062

″, Teflon Fiberglass, 1 oz.,

Copper clad both sides,

εr = 2.55

C2

1300 mils

C3 & C4

300 mils

Input Line

160 mils X 5315 mils

Output Line

160 mils X 4345 mils

C5

900 mils

C4

C11

Bias

Supply

–

NOTE: Due to variation in Chip Capacitor values and

board material, these are approximate positions.

3

REV 5