MRF6402

2

MOTOROLA RF DEVICE DATA

Characteristic

Symbol

Min

Typ

Max

Unit

ON CHARACTERISTICS

DC Current Gain

(IC = 0.1 Adc, VCE = 20 Vdc)

hFE

50

—

200

—

DYNAMIC CHARACTERISTICS

Output Capacitance

(VCB = 26 V, IE = 0, f = 1 MHz)

Cob

—

6

—

pF

FUNCTIONAL TESTS

Common–Emitter Amplifier Power Gain

(VCC = 26 V, Pout = 4 W, ICQ = 40 mA, f = 1.88 GHz)

Gp

9

10

—

dB

Collector Efficiency

(VCC = 26 V, Pout = 4 W, f = 1.88 GHz)

η

40

43

—

%

Load Mismatch

(VCC = 26 V, Pout = 4.5 W, ICQ = 40 mA, f = 1.88 GHz,

Load VSWR = 3:1, All Phase Angles at Frequency of Test)

Ψ

No Degradation in Output Power

f

(GHz)

1.75

1.84

1.95

0.12 + j0.18

0.13 + j0.2

0.15 + j0.16

0.06 + j0.05

0.06 + j0.04

0.06 + j0.02

Figure 1. Input and Output Impedances with Circuit Tuned for Maximum Gain

@ VCE = 26 V, ICQ = 40 mA, Pout = 4.5 W

Zin

(

Ω)

ZOL*

(

Ω)

ZOL*: Conjugate of optimum load impedance

into which the device operates at a

given output power, voltage, current

and frequency.

Zin

ZOL*

f = 1.95 GHz

1.75

f = 1.95 GHz

1.75

Zo = 50 Ω

1.84