Data Sheet SHF 2781 A
SHF Communication Technologies AG

Data SheetSHF 2781 AFrequency Tripler

SHF reserves the right to change specifications and design without notice
V001 - Oct. 10, 2023 - Page 1

Data Sheet SHF 2781 A
SHF Communication Technologies AGDescription
The SHF 2781 A is an active frequency tripler. With as little input power as -10 dBm the SHF 2781 A provides
a clean output signal covering nearly the whole E-Band (57 GHz up to 81 GHz). The build in filter ensures anoutstanding fundamental suppression.

Features•Frequency triplication from 19... 27 to 57… 81 GHz•

Low input drive power: -10 dBm… -3 dBm•Fundamental suppression: >50 dBc•

2nd Harmonic suppression: >30 dBc•Wide Single Supply Range 6 V…14 V @ <250 mA

Ease of Use•

Only a single 6 V…14 V DC supply is needed for operation.

•Upon delivery, the multiplier is ready to use. No additional software is needed.

SHF reserves the right to change specifications and design without notice
V001 - Oct. 10, 2023 - Page 2

Data Sheet SHF 2781 ASHF Communication Technologies AGSpecifications
Absolute Maximum Ratings
ParameterUnit

SymbolMinTypMax

Input PowerdBm

Pin

External DC Voltage on RF-In

V

VDC-6+6DC Supply Voltage

V

VSupply

020Comment-2
Only on AC coupled port

Electrical Characteristics (At 28°C case temperature, unless otherwise specified)Parameter

Unit

SymbolMin

TypMaxInput Frequency

GHz

fin

1927

Input PowerdBm

Pin-10-3

Output Frequency

GHz

fout

57

81

Output PowerdBm

Pout-12-4

Fundamental Suppression

dBc

H015080

Second Harm. Suppression

dBc

H023080

Spurious Signals

dBc

SParameter

Unit

SymbolMin

DC Supply Voltage

V

Vsupply

614DC Supply Current

I

Isupply90

250Power Dissipation

W

PdUnitSymbolCommentSee typ. output power page 4-60

Power Requirements
TypMaxComment

1.5

Mechanical Characteristics
ParameterMin

TypMaxConditions

Input Connector

1.85 mm (V) female1

Output Connector

1 mm female1

Weight1

Other gender configurations are available on request.

SHF reserves the right to change specifications and design without notice
V001 - Oct. 10, 2023 - Page 3

Data Sheet SHF 2781 A
SHF Communication Technologies AG

Typical Output PowerThe measurement below has been performed using an R&S© FSW-85 and an R&S© SMR-40 as a signal
generator. The SHF 2781 A has been directly connected to the FSW.

Typical Output Power for Various Input Power
0.00

Output Power in dBm-2.00
Pin = -3 dBm-4.00

Pin = -4 dBm
Pin = -5 dBm-6.00

Pin = -6 dBm
Pin = -7 dBm-8.00

Pin = -8dBm
Pin = -9 dBm-10.00Pin = -10 dBm-12.0057 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81

Output Frequency in GHz©

R&S is a registered trademark of Rohde & Schwarz GmbH & Co. KG

SHF reserves the right to change specifications and design without notice
V001 - Oct. 10, 2023 - Page 4

Data Sheet SHF 2781 A
SHF Communication Technologies AG

Typical Harmonic Suppression
The measurement below has been performed using an R&S© FSW-85 and an R&S© SMR-40 as a signal
generator with an output power of -6 dBm. The SHF 2781 A has been directly connected to the FSW.

Typical Harmonic Suppression
0.00-10.00Suppression in dBc-20.00-30.00-40.00Fundamental-50.00

Second Harmonic-60.00-70.00-80.00-90.0057 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81

Output Frequency in GHz©

R&S is a registered trademark of Rohde & Schwarz GmbH & Co. KG

SHF reserves the right to change specifications and design without notice
V001 - Oct. 10, 2023 - Page 5

Data Sheet SHF 2781 A
SHF Communication Technologies AG

Typical Waveforms
The measurement below has been performed using an Keysight© N1000A DCA with a 100 GHz sampling head
(N1046A) and an Agilent© E8244A as a signal generator. The SHF 2781 A has been directly connected to theN1046A.

©

Output Signal @ 57 GHz

Output Signal @ 60 GHz

Output Signal @ 63 GHz

Output Signal @ 66 GHz

Output Signal @ 69 GHz

Output Signal @ 72 GHz

Agilent and Keysight are a registered trademark of Keysight Technologies Inc.

SHF reserves the right to change specifications and design without notice
V001 - Oct. 10, 2023 - Page 6

Data Sheet SHF 2781 A
SHF Communication Technologies AG

Output Signal @ 75 GHz

Output Signal @ 78 GHz

Output Signal @ 81 GHz

SHF reserves the right to change specifications and design without notice
V001 - Oct. 10, 2023 - Page 7Data Sheet SHF 2781 A
SHF Communication Technologies AG

Mechanical Drawing with Heat Sink
2x M4x 5 mm

99.9

9.5

271326.5
9.5

2
10.2

5.5

7

23.2

10.4

3

3.2

12.2

OutIn

7.1

ncnc

5
4

GND +10 V
0.15 A

nc

6

3.5

9.9

173
36.5
26.5

9.5

9.9

27

14.3

13

all dimensions in mm

Pos.
1
2
3
4
5
6
7Connector
Input
Outputnc
GND+10 V / 0.15 A
ncnc

For permanent mounting remove the heat sink from the multiplier. In that case, please ensure that adequatecooling of the is guaranteed. It is recommended to use thermal paste or a thermal gap pad for the mounting.
In order to separate the heat sink, remove the four screws on the heat sink. Please note, thermal paste isused between the heat sink and the multiplier housing.

SHF reserves the right to change specifications and design without notice
V001 - Oct. 10, 2023 - Page 8

Data Sheet SHF 2781 A
SHF Communication Technologies AG

Mechanical Drawing without Heat Sink

23.6

4x M2x 5 mm

9.855.4

2110
23.535+142 -0

2x M2x 4 mm

5212.17221.2

12.4

5.1

In3
9.8

10.2

Outnc
nc

54

GND +10 V
0.15 A

37.3

24nc639.7

15.440
23.5

55.4

10all dimensions in mmPos.
12345
67Connector
Input
Outputnc
GND+10 V / 0.15 A
ncnc

Please ensure that adequate cooling of the multiplier is guaranteed.

SHF reserves the right to change specifications and design without notice
V001 - Oct. 10, 2023 - Page 9

Data Sheet SHF 2781 A
SHF Communication Technologies AGSHF Communication Technologies AGWilhelm-von-Siemens-Str. 23 D | 12277 Berlin | Germany+49 30 772 051 0
sales@shf-communication.com
www.shf-communication.com

SHF reserves the right to change specifications and design without notice
V001 - Oct. 10, 2023 - Page 10