7

MRF21125 MRF21125S MRF21125SR3

MOTOROLA RF DEVICE DATA

Figure 9. Series Equivalent Input and Output Impedance

f

MHz

Ω

Ω

2110

2140

2170

3.81 + j6.86

4.84 + j8.46

4.33 + j7.90

1.56 – j1.58

1.53 – j1.90

1.48 – j2.26

= Complex conjugate of source impedance.

impedance at a given output power, voltage,

IMD, bias current and frequency.

2-Carrier W-CDMA

power, drain efficiency and intermodulation distortion.

2170 MHz

f = 2110 MHz

Note 2: Measurements were taken on the MRF21125 test circuit

with SMA Launchers.

2170 MHz

f = 2110 MHz

Z in

Z OL*

Input

Matching

Network

Device

Under Test

Output

Matching

Network