Specifications

NETWORK ANALYZERS
358 For product ordering information, see pages 4 – 10
POWER AMPLIFIER TEST SYSTEM (PATS)
ME7840A
800 to 2400 MHz, 100 Watts
PATS is a flexible, easy-to-use system for power amplifier design and
manufacturing. It allows real-time, simultaneous tuning of various
amplifier parameters, including IMD and hot S
22
in both swept-fre-
quency and swept-power modes. Adjacent Channel Power Ratio
(ACPR) shows the performance of your PA under real-world modu-
lated conditions and is available with swept power mode. The follow-
ing table summarizes the PATS measurement capability between
800 and 2400 MHz for applications up to 100 Watts.
Easy-to-Use System for Power Amplifier Design and Manufacturing
GPIB
AUT
OPTIONAL
POWER
METER
OPTIONAL
SPECTRUM
ANALYZER
SYSTEM
CONTROLLER
(PC)
B2RF1 B1A1 A2
STEP
ATTENUATOR
70dB, 10dB/step
POWER
SUPPLY
COMBINER
RF2
OPTIONAL
MODULATION
SYNTHESIZER
-30dB
-30dB
-30dB
OPTIONAL
EXTERNAL
PRE-AMP
NN
NSSN
NSS
LIMITER
SS
SMA
NN
N SMASMA SMA N
-30dB
N
MS462XC DIRECT RECEIVER
ACCESS SCORPION
®
MS4782D TYPICAL TEST SET
EXT I/O
SOURCE 2
SOURCE 1
STEP
ATTENUATORS
70dB, 10dB/step
RF3
FORWARD REVERSE
TRANSFER
SWITCH
RECEIVERS
OPTIONAL
CURRENT PROBE
ANALOG IN
GPIB
GPIB
CONTROL
LINES
OPTIONAL
EXTERNAL
PREAMPLIFIERS
1
0
0
W
T
E
R
M
IN
A
T
IO
N
S
C3
C2
C1
S
S
OPTIONAL
EXTERNAL
CIRCULATOR
*
*Circulator is required only for S
22
measurement.
If S
22
is not required, port C1 is connected to C2
as shown by dashed line.
Measurements CW
Swept Frequency
(as fast as 150 µsecs/pt)
Swept Power
(as fast as 150 µsecs/pt)
ACPR √
√∗
IMD, TOI (two-tone):
3
rd
, 5
th
, 7
th
, & 9
th
√√ √
Gain Compression:
P
1
dB
AM/PM
√
√
√√
√
Harmonics:
Magnitude
Phase
√√
√
√
Power Added
Efficiency (PAE)
√√ √
Drain Current √√ √
Measurement capabilities:
•
Scorpion PA Navigator
The Scorpion PA Navigator is installed on your computer to orchestrate
the PATS measurements. The computer should be a Pentium II at 200
MHz or equivalent system with a GPIB Card (computer not included).
PATS Block Diagram
The following block diagram depicts the standard MS4782D Test Set
design. Anritsu can configure and optimize a custom test set for your
specific requirements.
PATS consists of three distinct parts: The MS462xC Vector Network
Measurement System, the MS4782D Test Set, and the Scorpion PA
Navigator.
• MS462xC Vector Network Measurement System
The MS462xC is the Direct Receiver Access (DRA) configuration for
the MS462xx family of Vector Network Measurement Systems (VNMS).
The MS462xC series is available in two wide-band RF models cov-
ering the 10 MHz to 3 GHz or 6 GHz range (MS4622C and
MS4623C respectively).
• MS4782D Test Set
The MS4782D Test Set provides the necessary hardware to inter-
face between your power amplifier and the VNMS.
S-Parameters
Hot S
22
√√ √
∗ Swept power speed is related to external source