PULSED RF POWER AMPLIFIER
R&K-GA2856BW4-5555RPW■ Very High Stability(Both Phase & Level)■ All Solid-State Amplifier■ Frequency Range:2856MHz±2MHz■ Output Power:300W(min.) @Peak(Pulse)
APPLICATION
Accelerator Application

SPECIFICATIONS ＠＋25℃: 2856MHz±2MHz: ＋55.0dB (min.): 300W (min.) @Peak
Pulse Width: 6μs Duty: 0.01%: 30ns (max.)
Pulse Rise Time: 30ns (max.)
Pulse Fall Time
: 3% (max.)
Over/Under Shoot: 1% (max.) @Flat-top
Pulse Flatness: 50Ω
Impedance: 1.2 (max.)
Input VSWR
: 1.5 (max.)
Output VSWR
Maximum RF Input Power : 0dBm
: AC100V±15％／1φ,
AC Supply Input
50／60Hz, 200VA:0℃ to ＋35℃
Operating Temperature: －15℃ to ＋55℃
Storage Temperature: RF‐IN
N‐FEMALE
Connectors
RF‐OUT N‐FEMALE: (W)480mm × (D)449.5mm × (H)177mm
Size: 35.0kg (max.)
Weight: Forced Air Cooling and Water CoolingCooling: Over Temperature Protection
Protection Circuits
Power Supply Voltage Protection
Output Over Power Protection: With Output Circulator
OtherFrequency Range
Small Signal Gain
Output PowerOUTLINE DRAWING※IN MILLIMETERSFRONT VIEW
480

GA2856BW4-5555RP
PULSED RF POWER AMPLIFIER
2856MHz±2MHz 55dB 300W

FWD MON

PAGE UPRF ON/OFF

ST-BY

RFBANDFWD POWERREF POWER

RESET

ON
150W
1W

PAGE DOWNBLANKING IN

177

POWER

REAR VIEW
430

ST-BY

RF IN

WATER OUT

WATER IN

FUSE

FUSE

171

RF OUT

LINE INPUT
AC100V 50/60Hz

GND

SIDE VIEW
36449.5

45

HOW TO ORDER
Model Name

TYPICAL PERFORMANCE (Temp @+25℃)
Gain Flatness

59

2.059

Input VSWR
Output VSWR

1.857

Option: Ask

Output Power Linearity & Current

57

1.756VSWR

55
54

55

1.64

1.5
53

1.4
1.3

51

1.2

52

1.1

2852

2854

2856

Frequency (MHz)

2858

2860

Phase Droop Fluctuations-1028542856

Frequency (MHz)

2858

2860

Level Droop Fluctuations

Frequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec

-15

2852

Frequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec

349

Current (A)53

Output Power (dBm)

Gain (dB)

Input / Output VSWR

1.958

Phase (deg.)

R&K-GA2856BW4-5555RPW OP XX

4724543-2041

Output PowerCurrent-25

139-30Measuring Points

0306090120150Time (minutes)

180210Frequency：2856MHz
Duty：0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec

X：1us / DIV
Y：65mV / DIV

37

0.3us
3.0us
5.7us

-35

240-20-18-16-14-12-10-8

Input Power (dBm)-6-4-20

PULSED RF POWER AMPLIFIERTYPICAL PERFORMANCE (Temp @+25℃)■Gain / Phase Stability

・Phase Stability in Pulse Width

R&K-GA2856BW4-5555RPW

Frequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec

・Gain Stability (1st Pulse Reference)
Frequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec

・Phase Stability (1st Pulse Reference)
Frequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec

・Gain Stability (After 60ms, 2nd Pulse)
Frequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec

・Phase Stability (After 60ms, 2nd Pulse)
Frequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec

PULSED RF POWER AMPLIFIERTYPICAL PERFORMANCE (Temp @+25℃)■Phase Stability

R&K-GA2856BW4-5555RPW

Frequency：2856MHz
Po：300W
Duty：0.01%／16.66pps
Pulse width ：6usec
Pulse Period ：60msec
10min. after turn on

Frequency：2856MHz
Po：300W
Duty：0.01%／16.66pps
Pulse width ：6usec
Pulse Period ：60msec
60min. after turn on

Frequency：2856MHz
Po：300W
Duty：0.01%／16.66pps
Pulse width ：6usec
Pulse Period ：60msec
120min. after turn on

Frequency：2856MHz
Po：300W
Duty：0.01%／16.66pps
Pulse width ：6usec
Pulse Period ：60msec
240min. after turn on

PULSED RF POWER AMPLIFIERTYPICAL PERFORMANCE (Temp @+25℃)■Output Pulse Characteristics
・Pulse Rise

R&K-GA2856BW4-5555RPW

Frequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec
X：50ns / DIV
Y：100mV / DIV・Over ShootFrequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec
X：50ns / DIV
Y：100mV / DIV・Pulse Fall
Frequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec
X：50ns / DIV
Y：100mV / DIV

・Under ShootFrequency：2856MHz
Po：300W @Duty0.01%/16.66pps
Pulse width ：6usec
Pulse Period ：60msec
X：50ns / DIV
Y：100mV / DIV