SHF Communication Technologies AGWilhelm-von-Siemens-Str. 23 • Aufgang D • 12277 Berlin – Marienfelde • Germany
Phone ++49 30 / 772 05 10 • Fax ++49 30 / 753 10 78
E-Mail: sales@shf.biz • Web: http://www.shf.biz

Datasheet
SHF 816
Power Amplifier

Specifications – SHF 816
Parameter

SymbolUnit

Min

High frequency 3 dB point

fHIGH

GHz

27

Low frequency 3 dB point

fLOWGHz

Gain

GdB

31

Gain control voltageUgc

V0

Output power at 1 dBcompression

P01dBdBm(V)

29(17.8)30(20)>17.5GHz <27GHz

Output power at 2 dBcompression

P02dBdBm(V)

30(20)

30.5(21)>17.5GHz <27GHz

Output power at 3 dBcompression

P03dBdBm(V)

30.5(21)31(22)>17.5GHz <27GHz

Input return loss

S11dB-10>17GHz <27GHz

Output return loss

S22dB-10>17GHz <27GHz

Maximum input power
Supply voltage
Power consumption

MaxConditions

17dBm
Us

Typ

32

inverting-5410V

9W

9.9

reduces gain by morethan 3 dB1

in operation
without power supply
101.1 A, reverse voltage
protectedusing 9 V supply
voltage

Input connector

K (2.9mm) female2

Output connector

K (2.9mm) male2

Dimensions (LxWxH)

12mm

51x35x13.5
excluding connectors

large signal gain – see page 4other connectors available on request

The SHF 816 has a three stage amplifier design using special monolithic microwave integrated
circuits (MMICs) inside special carriers to achieve low noise performance. The custom made
MMIC carrier is optimized for good input return loss between its interior and the 50 Ohm outside
hybrid technology. The computer optimized broadband circuit is specially tuned for maximum
output power and gain. A voltage regulator IC makes the amplifier insensitive to reverse voltage
and line ripple.

SHF reserves the right to change specifications and design without notice – SHF 816 – Rev. 1.2 – 22/APR/2004

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S-Parameters, group delay and phase response at maximum gain

Aperture of group delay measurement: 81 MHz

SHF reserves the right to change specifications and design without notice – SHF 816 – Rev. 1.2 – 22/APR/2004

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Saturation power

Top (red): 3 dB compression; Middle (green): 2 dB compression; Bottom (blue): 1 dB compression

Gain reduction function
34|S 2 1 | [ d B ]3230
282624

S21 (dB) - Ugc=0V

S21 (dB) - Ugc=-2V

22S21 (dB) - Ugc=-4V

S21 (dB) - Ugc=-5V

182224Frequency [ GHz ]S21 (dB) - Ugc=-3V

20
1620

26

28

30

S21 measured at different gain control voltages. Power in = -2dBm

Ugc=-3V30

Ugc=-4VUgc=-5V

28
Pout [ dBm ]32Ugc=0V

26
24
2220
18
16-10-9-8-7-6-5Pin [ dBm ]-4-3-2-1Output power vs. input power at different gain control voltages. Measured at 20GHz
SHF reserves the right to change specifications and design without notice – SHF 816 – Rev. 1.2 – 22/APR/2004

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4244
47,4

Power
supplyOutput Bias-T(Optional)

4,8
7,15
10,6
13,5

The following options cannot be combined:
01 and 02
03 and 04
02 and 04

Side view

9,5GainControl

04: Built-in bias-T on output

Input

Input Bias-T(Optional)

03: DC return on output

Top view

01: DC return on input
02: Built-in bias-T on input

Output Available Options

4,916,542332
35

Bottom view

M2,5x5 (4x)

31
48
51

SHF reserves the right to change specifications and design without notice – SHF 816 – Rev. 1.2 – 22/APR/2004

Page 5/6

User Instructions
ATTENTION !
Electrostatic sensitive GaAs FET amplifier1.

To prevent damage through static charge build up, cables should be always discharged before
connecting them to the amplifier!

2.

Attach a 50 Ohm output load before supplying DC power to the amplifier!

3.

The supply voltage can be taken from any regular 9…10V, 1.1A DC power supply and can beconnected to the supply feed-through filter via an ON / OFF switch.

4.

The minimum supply voltage is 9V. A higher one increases the power dissipation of the internal
voltage stabilizer.

5.

Using a 3 dB or 6 dB input attenuator will result in a 6 dB or 12 dB increase of the input returnloss. For minimal degradation these attenuators should have a bandwidth specification of >40
GHz (K/ 2.9mm attenuators)!

6.

An input signal of about 0.5 Vpp equivalent to -2 dBm will produce the full swing output of 20 Vpp7.

We recommend that the amplifier be used in conjunction with a 50 Ohm load. Use of a reflective
load for extended periods should be avoided.

8.

The input voltage should never be greater than 1 Vpp equivalent to 4 dBm input power.
The input voltage without DC power supplied to the amplifier should never be greater than 2 Vppequivalent to 10 dBm input power.

SHF reserves the right to change specifications and design without notice – SHF 816 – Rev. 1.2 – 22/APR/2004

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