SHF Communication Technologies AG
Wilhelm-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 BT65
Broadband Bias Tee

Resonance free transmission performance from 20 kHz to over 65 GHz
Innovative construction – Patent pendingSpecifications – SHF BT65
Parameter

SymbolUnitMinHigh frequency 3 dB point

fHIGH

GHz65

Low frequency 3 dB point

fLOW

Insertion loss
Input return loss

TypMax

ConditionskHz50

at 0.4 AS21dB

1.5<60 GHz

S11dB-17-15-9>40 MHz <15 GHz<30 GHz<65 GHz-10Isolation

dB-40

Maximum input powerPmax

dBm

30

Rise time/Fall timetr/tf

ps510…90%Bias voltage

Vbias

V

160.4 A

Input connector

V (1.85 mm)

Output connector

V (1.85 mm)

Dimensions

mm

40x13x12.6

Insertion loss

SHF reserves the right to change specifications and design without notice – SHF BT65 – Rev. 1.23 – 17/NOV/2003

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Low frequency insertion loss
0S21 [dB]-1-2-3-4-5
0.01

0.05

0.100.50

1.00

5.00 10.00

Frequency [MHz]Input return loss
0-5S11 [dB]-10-15-20-25
-30
-35
0.01

0.05

0.10

0.50

1.00

5.00 10.00

Frequency [MHz]Group delay and phase response

Aperture of group delay measurement: 100MHz

SHF reserves the right to change specifications and design without notice – SHF BT65 – Rev. 1.23 – 17/NOV/2003

Page 3/6

Option EMThe performance of the bias tee can be measured up to 110GHz. The data is supplied on afloppy disk in .s2p format. Measured with Agilent 8510XF and 1mm → V adaptors on input andoutput of bias tee. The data presented contain the contributions due to the adaptors.
Insertion loss

The spike at ~71GHz is due to moding of the V connectors.
Input return loss

SHF reserves the right to change specifications and design without notice – SHF BT65 – Rev. 1.23 – 17/NOV/2003

Page 4/6

Eye diagrams at 2.5 Gbps
Input signal generated by SHF BPG 44 Opt. LJ NRZ, PRBS 223 –1, measured with Digital
Communications Analyzer Agilent 86100B / 83484A
50 cm Sucoflex 102EA + 3 dB V-Gold attenuator between the generator and the sampling head
input
Output signal measured with Digital Communications Analyzer Agilent 86100B / 83484A
50 cm Sucoflex 102EA between the generator and the bias tee
3 dB V-Gold attenuator before the sampling head input

Input signal

Output signal

Eye diagrams at 44 Gbps
Measurement conditions as above

Input signal

Output signal

SHF reserves the right to change specifications and design without notice – SHF BT65 – Rev. 1.23 – 17/NOV/2003

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Outline diagram

12,1

 Applications

5,4

Research andDevelopment

13

SHF BT-65 A
16V/0,4A

11,3

SN XXXX 50 kHz - 65 GHz

High-Speed Pulse
Experiments
Data Transmission

6,5

Optical Communications

6,3136,340

12,1The following
combinations ofconnectors areavailable.

12,61316V/0,4A

SN XXXX 50 kHz - 65 GHz
11,3Please specify with yourorder.

6,55,4SHF BT-65 B

6,313

6,312,6

12,14013

16V/0,4A

12,1

SN XXXX 50 kHz - 65 GHz

6,55,4SHF BT-65 C

6,313

6,312,6

11,34013

16V/0,4A

11,3

SN XXXX 50 kHz - 65 GHz

6,55,4SHF BT-65 D

6,31340

6,3All dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF BT65 – Rev. 1.23 – 17/NOV/2003

12,6

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