RF Amplifier Data Sheet
BT-EPR-bb series
250W/500W/1kW
BT-EPR series
Model numbers
BT00250-EPR-bb/ BT00500-EPR-bb/ BT01000-EPR-bb
Rated power
250W/500W/1kW minimum1
P1dB
200W/400W/800W minimum2
Type
Class AB MOSFET
Frequency
100-600MHz, 200-750MHz or 350-800MHz
Gain fl atness
±1.5dB maximum
Max. duty cycle
5%3
Max. pulse width
10ms 4
Pulse droop
0.25dB maximum 5
Pulse rise and fall times
At frequenices greater than 200MHz:
<20ns typical from 10% to 90% full power
At frequenices less than 200MHz:
<30ns typical from 10% to 90% full power
using a pre-gated RF input signal
Gate delay
Rising edge: 50ns typical Falling edge:50ns typical 6
Harmonics
Odd: -16dBc typical, -10dBc maximum
Even:-30dBc typical, -20dBc maximum
Spurious
<-70dBC maximum
Output noise (blanked)
<10dB above thermal
Output sample
-50dB into 50 (forward voltage sample)
Input/output impedance
50 Ω nominal
Load SWR
Tolerates at least 3:1 @ full rated power without shut down7
Remote interface
Parallel status monitoring via 25 pin D connector 8
• Extremely high phase and amplitude
stability
Connectors
RF output: N type
Cooling
Forced air
• Ultra fast pulse rise/fall times - typically
less than 20ns
Indicators
DC Power, RF Power, Enable, Selected, Over-temp,
Over-duty, Mismatch, Shutdown
• High linearity
Gain control range
10dB minimum for 0-5V control voltage
• Very low interpulse noise
RF drive
RF gate (blanking)
0dBm nominal, 10dBm for no damage
0-5V CMOS
Physical
19” Wx 500mmD x 133mmH (3RU x 19” rack mounting),
15/18kg/22kg
Mains power
110-240V, 50-60Hz, single phase, 250VA max.10
Typical mains power
consumption
65W/110W/190W when running at full power, full duty cycle.
30W/40W/50W standby
Compliance
CE
The BT-EPR series is a range of class AB
pulsed RF power amplifiers offering ultra
fast pulse rise and fall times. They are
available in a range of bands from 100MHz
to 1GHz, eg, 100-600MHz, 200-750MHz,
350MHz-800MHz
• Rugged, solid-state design - high
reliability
Suitable for EPR, ESR, ENDOR and pulsed
radar system which use very short pulses
www.tomcorf.com
RF input, gate, sample:BNC 9
1. PEP for input power of 1mW
2. Minimum output power at 1dB gain compression
3. Duty cycle is internally limited in pulsed mode
4. Maximum gate pulse width in pulsed mode (internally limited)
5. Measured at max. pulse width at nominal P1dB level
6. Rising edge measured from rising edge of GATE pulse to 90% RF output voltage. Falling edge measured from
falling edge of GATE pulse to 10% RF output voltage
7. Self resetting protection shuts the amplifier off if the load SWR is excessive
8. Pin out at www.tomcorf.com/pdf/interface.pdf
9. Other connector types available on request
10. 3-pin IEC. Mains supply must include an earth
RF Amplifier Data Sheet
BT-EPR-bb series
250W, 500W, 1kW
Typical peak envelope power plots
Harmonics
2000
P1dB
Pout for 0dBm drive
1800
0
1400
1200
1000
BT01000-EPR-bb
800
600
-20
-30
-40
-50
BT00500-EPR-bb
-60
BT00250-EPR-bb
-70
400
200
Harmonic level /-dBc
1600
-80
0
200
300
400
500
600
700
100
200
300
I
I
O
O
400
500
Frequency/MHz
Frequency/MHz
RF Power Amplifier
E
C
H
N
O
L
O
G
I
E
DANGER
S
HIGH RF
VOLTAGE
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RF IN
F01
GATE
RF SAMPLE
RF OUT
2
3456
BCDE
T
A
100
789
Power/W
2nd harmonic (2F)
3rd harmonic
4th harmonic
5th harmonic
-10
CAUTION
INTERFACE
THIS EQUIPMENT
MUST BE EARTHED
ADDRESS
38 Payneham Road, Stepney SA 5069. Australia
USA:+1 202 657 6844
Tel:+618 8362 2902 Fax:+618 8362 2912
UK:+44 20 3239 6847
Hong Kong:+852 8121 4277
EARTH
www.tomcorf.com
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