SHF Communication Technologies AG
Wilhelm-von-Siemens-Str. 23D • 12277 Berlin • Germany
Phone +49 30 772051-0 • Fax ++49 30 7531078
E-Mail: sales@shf.de • Web: http://www.shf.deDatasheet
SHF 2856 AFrequency Doubler

SHF reserves the right to change specifications and design without notice – SHF 2856 A - V002 – Nov. 20, 2014

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Description
The SHF 2856 A is a balanced diode frequency doubler with integrated output buffer amplifier. It features
a low conversion gain of approximately 0 dB in the output frequency range between 50 GHz and 60 GHz.
Beyond those limits the frequency doubler operates with slightly worse characteristic. A co-planar balun
ensures a good suppression of the fundamental frequency.

FeaturesLow Input Power Drive: 0 dBm

Fundamental Suppression: >30 dBc

Single Supply: +5V @ 150 mA

SHF reserves the right to change specifications and design without notice – SHF 2856 A - V002 – Nov. 20, 2014

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Specifications – SHF 2856 AParameter

Unit

Symbol

Min.

Typ.

Max.

CommentAbsolut Maximum Ratings
DC Voltage at RF Input

V±9AC coupled input

DC Voltage at RF Output

V±7

AC coupled output

Case Temperature°CTcase

10

Input Frequency

GHzfin25

Input Power Level

dBm

Pin-6

Input Return Loss

dB3050Input
32044Output
Output Frequency

GHzfout5064

Output Power Level

dBm

Pin-60Suppression of Fundamental

dBc

2530

Supply Voltage

V+4.75

Supply Current

mA

150

Power Consumption

mW

750

4varies with Pin

Power+5.25@ 5V Supply Voltage

Mechanical Parameters
Input Connector

1.85 mm (V) female

Output Connector

1.85 mm (V) maleDimensionsmm

27 x 18 x 10

SHF reserves the right to change specifications and design without notice – SHF 2856 A - V002 – Nov. 20, 2014

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Typical Conversion Gain
The measurements below have been performed using a Tektronix DSA (8300) with a 70 GHz Sampling
Module (80E11) and a Phase Reference Module (82A04B-60G).

0.5 m Microwave
Cable AssemblySignalGenerator
Pout=0dBm

Frequency
Doubler

DSA
Tektronix 8300

SHF 2856 A

3Conversion Gain [dB]0-3-6-940

45

50

55

60

65

70

75

SHF reserves the right to change specifications and design without notice – SHF 2856 A - V002 – Nov. 20, 2014

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Output Frequency [GHz]Typical PIN to POUT Relation
The measurements below have been performed using a Tektronix DSA (8300) with a 70 GHz Sampling
Module (80E11) and a Phase Reference Module (82A04B-60G) at 56 GHz output frequency.

0.5 m Microwave
Cable AssemblySignalGenerator
Pout=0dBm

Frequency
Doubler

DSA
Tektronix 8300

SHF 2856 A

64
20Pout [dBm]-2-4-6-8-10-12-14-16-10-8-6-4-2024

SHF reserves the right to change specifications and design without notice – SHF 2856 A - V002 – Nov. 20, 2014

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Pin [dBm]

Typical Suppression of Fundamental Signal
The measurements below have been performed using a Anritsu 68197C Signal Generator with a 0,5m Totoku
cable assembly and an Agilent 8565 EC Spectrum Analyzer.

0.5 m Microwave
Cable AssemblySignalGenerator
Pout=0dBm

Frequency
Doubler

Spectrum
Analyzer
Agilent 8565EC

SHF 2856 A

40Suppression [dB]3530252015
104045505560

65

70

75

SHF reserves the right to change specifications and design without notice – SHF 2856 A - V002 – Nov. 20, 2014

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Output Frequency [GHz]Typical Output Waveforms
The measurements below have been performed using a Tektronix DSA (8300) with a 70 GHz Sampling Head(80E11) and a Phase Reference Module (82A04B-60G) with approximately 0 dBm input power.

Output signal @ fout = 46 GHz

Output signal @ fout = 48 GHz

Output signal @ fout = 50 GHz

Output signal @ fout = 52 GHz

Output signal @ fout = 54 GHz

Output signal @ fout = 56 GHz

SHF reserves the right to change specifications and design without notice – SHF 2856 A - V002 – Nov. 20, 2014

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Output signal @ fout = 58 GHz

Output signal @ fout = 60 GHz

Output signal @ fout = 62 GHz

Output signal @ fout = 64 GHz

Output signal @ fout = 66 GHz

Output signal @ fout = 68 GHz

SHF reserves the right to change specifications and design without notice – SHF 2856 A - V002 – Nov. 20, 2014

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4x M2.5

13.6

Mechanical Drawing

55
6.1

15

2.2

18
4.7

12.3

n.c.

27

25
6.1

10

12.3

+5V /150mA

Outx2

XXXXX
In

SHF 2856 A

4.7

172.2
17PortInOutConnector1.85mm (V) female
1.85mm (V) maleAll dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF 2856 A - V002 – Nov. 20, 2014

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