250 mW Linear Power Amplifier and T/R Switch

AM55-0004

Specifications Subject to Change Without Notice

V 2.00

M/A-COM Inc.

s

1011 Pawtucket Boulevard, Lowell, MA 01853 USA

s

Telephone: 800-366-2266

5

Power Amplifier Spectral Response Under

Modulation Drive

(

π/4 DQPSK, = 0.5, 384 kB/sec, 9-bit PN code)

(V

FREQUENCY (MHz)

1899.0

1899.4

1899.8

1900.2

1900.6

1901.0

0

-20

-40

-60

-80

Transmit/Receive Switch Performance

INSERTION LOSS

FREQUENCY (GHz)

1.50

1.75

2.00

2.25

2.50

0.0

-0.5

-1.0

-1.5

-2.0

(V

FREQUENCY (MHz)

1899.0

1899.4

1899.8

1900.2

1900.6

1901.0

0

-10

-20

-30

-40

-50

-60

-70

ISOLATION (@ -15°C, +25°C and +70°C)

FREQUENCY (GHz)

1.50

1.75

2.00

2.25

2.50

-20

-25

-30

-35

-40

RETURN LOSS (@ -15°C, +25°C and +70°C)

FREQUENCY (GHz)

1.5 1.6

1.7

1.8

1.9

2.0

2.1

2.2

2.3

2.4

2.5

0

-5

-10

-15

-20

-25

-30

-35

LINEARITY (Tx MODE)

POWER IN (dBm)

25

26

27

28

29

30

31

32

33

34

33

31

29

27

25

23

2.5

1.5

0.5

-0.5

-1.5

-2.5

V

P

3

20.5

3.6

21.4

4

22.2

4.8

23.4

6

23.7

1. Spectral output is tested under the following conditions:

Modulation scheme is

π/4 DQPSK with a bit transfer rate

of 384 kB/sec and a root Nyquist filter with

= 0.5 per

RCR STD-28. The spectrum analyzer settings are as follows:

Resolution bandwidth: 10 kHz

Video bandwidth: 100 kHz

Sweep time: 5 seconds

2. This chart documents the modulated output power delivered

for a fixed adjacent channel interference (ACI) rejection of 55

dBc at a 600-kHz offset.

-15°C

+25°C

In

Out

+70°C