HIGH POWER AMPLIFIERSPECIFICATIONS ＠＋25℃

R&K-A1.7BW0.2-6878R

Frequency Range
Output PowerOperation Mode
Impedance
Maximum Input LevelHarmonics
Spurious
Input VSWR
Output VSWRBlanking Pulse Input■ Envelope Synchronous Amplitude Modulation,
Class D RF Power Amplifier.
■ Frequency Range:1.7MHz～1.9MHz■ Output Power:60kW(pep)■ Building Block Construction
APPLICATIONHOW TO ORDER

Accelerator Application
OUTLINE DRAWING: 1.7MHz～1.9MHz: 60kW (pep): Class D: 50Ω
: 1Vp-p: －25.0dBc (max.) @Po=60kW: －60.0dBc (max.) @Po=60kW: 1.5 (max.): 2.0 (max.): TTL Lo＝ON, TTL Hi＝OFF(TTL width≦25ms，duty≦50%)
RF Blanking ON/OFF Ratio : 100dB (min.)Single Amplifier AM
modulation Level Linearity: ±25％ (max.)Single Amplifier AM
modulation Phase Linearity: ±25％ (max.)
AC Supply Input: AC200V±10％／3φ, 50／60Hz
Consumption Power: Ave. 52kVA (typ.), Peak 107kVA (typ.)Operating Temperature :0℃ to ＋35℃
Storage Temperature: －15℃ to ＋55℃Connectors: RF‐IN
N‐FEMALE
RF‐OUT 3-1/8” EIA FlangeSize: (W)824mm×(D)1160mm×(H)1680mm(W)684mm×(D) 853mm×(H) 768mm(Excluding Projection)
Weight: 1200.0kg (max.)
Cooling: Forced Air Cooling and Water CoolingProtection Circuits: Over Temperature Protection
Power Supply Voltage Protection
Output Over Power Protection
Output Over Reflection Power Protection
Blanking Input Error protection
Over Dorain Voltage/Current Protection
Gate Voltage Protection
Input Level Protection
Water Flow Protection
Water Temperature Protection: R&K Multi Monitoring System
Metering

Model Number※IN MILLIMETERSFRONT VIEW

R&K-A1.7BW0.2-6878R OP XX

SIDE VIEW

Option:Ask

REAR VIEW

1513110083.5800

R&K Company Limited
Ethernet

RFIN
1.7MHz50Ω

BLANK ING IN

T TL Lo=Active

ST-BY

EMERGENCY
STOP

POWER

RF IN-1

RF IN-3

RF IN-2

RF IN-4

RF FW D MON

RF REF MON-76dB

-76dB

R&K
A1.7BW0.4-6878R
RF POWER AMPLIFIERCONT ROL-A

AC200V/DC IN

CONT ROL-B

PAGE SELECTLOCAL

RF ON/OFF

RF IN

RF IN

RF IN

S T-BY

LINE INPUT
AC200V，3Φ 50/60Hz－1－

RF IN-2

CONT ROL-B

RF IN-1

CONT ROL-A

RF IN-2

RF IN-1

CONT ROL-B

CONT ROL-A

RF IN-2

RF IN-1

CONT ROL-B

CONT ROL-A

RF IN-2RF IN-1

RF IN

CONT ROL-B

853684

CONT ROL-A

1680

UP

768

DOWN

RESET

HIGH POWER AMPLIFIERTYPICAL PERFORMANCE (Temp @+25℃)
R&K-A1.7BW0.2-6878R

Output Power @Peak

Output Power (dBm)

80
79
78
77
76
75
74
73
1.70

1.75

1.80

1.85

1.90

VSWR

Frequency (MHz)Input / Output VSWR

3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2

Input VSWR
Output VSWR

1.70

1.75

1.80

1.85

1.90

Frequency (MHz)Output Harmonics

Output Harmonics (dBc)

0Output Power = 60kW

-10-20-30-40
1.70

1.75

1.80

Frequency (MHz)－2－1.85

1.90

HIGH POWER AMPLIFIERTYPICAL PERFORMANCE (Temp @+25℃)
R&K-A1.7BW0.2-6878R

Spurious (Broad Band)

110
1009080dBc or more

Level (dBm)

80
70
60
50
40

Modulated Noise

3020
1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2.0

2.1

2.2

Frequency (MHz)Spurious (Narrow Band)

110
1009080dBc or more

Level (dBm)8070

Modulated AM Signal

60
5040
30
20
1.60

1.62

1.64

1.66

1.68

1.70

1.72

Frequency (MHz)－3－1.741.76

1.781.80

HIGH POWER AMPLIFIERTYPICAL PERFORMANCE (Temp @+25℃)
R&K-A1.7BW0.2-6878R

10060

9050804070

3060
OutputEfficiency
Power201.70MHz

50

1.75MHz
1.80MHz101.85MHz

401.90MHz

020406080

100120Drain Voltage (V)Frequency vs. Output Power
8070

Output Power (kW)60
127.5V

50114.6V
105.8V4089.2V

3071.7V

2053.2V

1001.70

1.75

1.80

Frequency (MHz)－4－1.85

1.90

140

Efficiency (%)

Output Power (kW)Drain Voltage vs. Output Power & Efficiency
70

HIGH POWER AMPLIFIERTYPICAL PERFORMANCE (Temp @+25℃)
R&K-A1.7BW0.2-6878R

Output Power Stability vs. Time

1.0

Frequency ：1.7MHz
Output Power：63.7kW

0.8OutputPowerEnvironmental
Temp.

0.6

Level deviation (dB)100

Heatsink
Temp.

0.4

Water
Temp.

90
80
70

0.2

60

050-0.2

40-0.430-0.620-0.8

10030

60

90

Temperature (℃)■Gain
Gain / Phase Stability

120 150 180 210 240 270 300 330 360 390 420

Time (minute)

Phase Stability vs. Time100

Frequency ：1.7MHz
Output Power：63.7kW

8PhaseEnvironmental
Temp.

6Heatsink
Temp.
Water
Temp.

Phase (deg.)

4908070260050-240-430-620-810020406080100120140Time (minute)－5－160180200220240

Temperature (℃)

10HIGH POWER AMPLIFIERTYPICAL PERFORMANCE (Temp @+25℃)
R&K-A1.7BW0.2-6878R■P.S.
P.S. Output Waveform■RFRF Output Voltage Waveform・Frequency = 1.70MHz / Output Power = 65.125kW

・Frequency = 1.70MHz / Output Power = 65.125kW ※70dB coupler connection

X:5ms / DIV Y:50V / DIV

X:5ms / DIV Y:500mV / DIV・Frequency = 1.75MHz / Output Power = 65.165kW・Frequency = 1.75MHz / Output Power = 65.165kW ※70dB coupler connection

X:5ms / DIV Y:50V / DIV

X:5ms / DIV Y:500mV / DIV・Frequency = 1.80MHz / Output Power = 66.663kW

・Frequency = 1.80MHz / Output Power = 66.663kW ※70dB coupler connection

X:5ms / DIV Y:50V / DIV

X:5ms / DIV Y:500mV / DIV・Frequency = 1.85MHz / Output Power = 66.663kW

・Frequency = 1.85MHz / Output Power = 66.663kW ※70dB coupler connection

X:5ms / DIV Y:50V / DIV

X:5ms / DIV Y:500mV / DIV・Frequency = 1.90MHz / Output Power = 67.418kW・Frequency = 1.90MHz / Output Power = 67.418kW ※70dB coupler connection

X:5ms / DIV Y:50V / DIV

X:5ms / DIV Y:500mV / DIV－6－