WJ Communications SA1056 Datasheet

Watkins-Johnson: The Cell Extenders

Power Amplifiers

SA1056

CDMA 1.5-Watt

1.93 GHz to 1.99 GHz

Linear Power Amplifier Module

The Wireless Edge

™

■

1.5 Watts CDMA IS-95

■

+38 dBm P1dB

■

40 dB Gain

■

-30°C to +85°C

2.300

GND+25 V+5 V

GND

+25 V+5 V

4x ] .136 THRU

RF IN

RF OUT

MODEL WJ-SA1056
PCS AMPLIFIER
1930-1990 MHz
SERNO-0112

WATKINS­JOHNSON

5.00

3.75

3.100

4.700

.150

.150

2X SMA FEMALE

.75

2X .475

OUTLINE DRAWING

WJ Wireless Products: 1-800-WJ1-4401 • FAX: [phone] • e-mail: [e-mail].

W

atkins-Johnson’s SA1056 Power

Amplifier provides exceptional

linearity for CDMA digital modulation

applications. Utilizing WJ’s GaAs

amplifiers driving bipolar transistors

in the class A output stage, the SA1056

achieves a very high output third-order

intercept point combined with superior

efficiency.

Watkins-Johnson: The Cell Extenders

Power Amplifiers

The Wireless Edge

™

SA1056

CDMA 1.5-Watt 1.93 GHz to 1.99 GHz

Linear Power Amplifier Module

Specifications

Parameters Typical Level Specified Limits

Frequency 1.930 -1.990 GHz
P

out

at 1 dB Gain Compression (Min.) +38 dBm +37 dBm
Small Signal Gain at +25°C 40 ± 0.75 dB
Gain Variation over Temperature (-30 to +85°C) ±0.75 dB
CDMA Adjacent Channel Power Rejection (ACPR)

Measured ±885 kHz away from the center frequency in a 30 kHz bandwidth -48 dB -45 dB
Measured ±1.25 MHz away from the center frequency in a 12.5 kHz bandwidth -54 dB -52 dB
Spurious power level at fo ± 2.75 MHz in a 1.0 MHz bandwidth, P

out

= +32 dBm (Max.) -35 dBm -30 dBm
3rd Order Two-Tone Output Intercept Point, Measured with +25 dBm per Tone (Min.) +47 dBm +45 dBm
Harmonic Output with +32 dBm CDMA Output at the Fundamental (Min.)

2nd harmonic -45 dBm Not Guaranteed

3rd harmonic -35 dBm Not Guaranteed
Noise Figure (Max.) 5.0 dB 6.0 dB
Input and Output Impedance 50 Ohm
Return Loss, 1.930 to 1.990 GHz

Input and Output -20 dB -15 dB
Load Mismatch Sustainable without Damage (Pin ≤ -5 dBm V

supply

≤ +25.0 Vdc) 3.0:1

Stability, no spurious output above -50 dBm Unconditionally stable

for all loads
Supply Voltages +5 and +25 Vdc
Maximum Supply without Damage

+25 Volt Supply +26.5 Vdc
+5 Volt Supply +6 Vdc

Maximum DC Current

+25 Vdc Supply 1850 mA 2000 mA
+5 Vdc Supply 505 mA 560 mA

DC Power Dissipation (Max.)

+25 Vdc Supply 50 watts
+5 Vdc Supply 2.8 watts

Baseplate Temperature Range

2

-30 to +85°C
Size (Refer to interface control drawing WJ-299010SK) 0.75” (H), 3.75” (W), 5.00” (L)
RF Connectors SMA Female
Weight 13.8 oz. 14 oz.

IM (Lower)
IM (Upper)

15

-80

-70

-60

-50

-40

-30

-20

-10

20 25

Output Power Per CW Tone (dBm)

Intermod Product Rejection (dBc)

30 35 40 25

-70

-65

-60

-55

-50

-45

-40

28 31 34

Output Power (dBm)

Adjacent Channel Power Rejection (dB)

37 40

ACPR at -885 KHz
ACPR at +885 KHz
(in 30 KHz BW)

ACPR at -1.25 MHz
ACPR at +1.25 MHz
(in 1.25 KHz BW)

25

-30

-25

-20

-15

-10

-5

0

28 31 34

Output Power (dBm)

Power at 2.75 MHz Offset (dBm)

37 40

Power at -1.25 MHz
Power at +1.25 MHz
(in 1.0 MHz BW)

Intermodulation Suppression vs. Output
Power Per Tone

ACP Rejection vs. Output Power CDMA Power vs. Output Power

Frequency = 1960 MHz
Tempterature = +25°C

Note: Offsets and resolution bandwidths
Comply with SP-3383. Measured with a
Noise/Com CDMA Generator (12 dB peak­to-average ratio).

Third-Order Two-Tone

Frequency = 1960 MHz
Tempterature = +25°C

Note: 1. CDMA adjacent power and spurious measurements are made using a Rohde & Schwarz SMIQ03 source in an IS-95

forward link mode.

2. This unit is to be mounted on a ground plane and thermal heat sink, with a maximum heat sink temperature of +85°C.

WATKINS-JOHNSON COMPANY • 3333 Hillview Avenue • Palo Alto, CA 94304-1223