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 BT45
Broadband Bias Tee

Resonance free transmission performance from 20 kHz to over 45 GHz
Innovative construction – Patent pendingSpecifications – SHF BT45
Parameter

SymbolUnitMinHigh frequency 3 dB point

fHIGH

GHz45

Low frequency 3 dB point *fLOWInsertion loss
Input return loss

MaxConditionskHz20at 0.4 AS21dB

1.5<40 GHz

S11dB-17>40 MHz <15 GHz-15<20 GHz-10<45 GHz

Isolation

TypdB-40

Maximum input powerPmaxdBm

30

Rise time/fall timetr/tf

ps520…80%Bias voltage *Vbias

V

160.4 A *Input connector

K (2.9 mm)

Output connector

K (2.9 mm)

Dimensions

mm

40x13x12.6* High current and high voltage bias tees are also available – this affects the fLOW value.

Group delay
50

Group delay variation (ps)403020100-10-20-30-40-50
051015202530

3540

4550

Frequency (GHz)

Aperture of group delay measurement: 81 MHz

SHF reserves the right to change specifications and design without notice – SHF BT45 – Rev. 1.4– 1/DEC/2004

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Phase response
30

Phase deviation (°)

20100-10-20-30051015202530

3540

4550

30

35404550

Frequency (GHz)

Input return loss
0-5-10S11 (dB)

-15-20-25-30-35-40-45-50
0

51015

2025
Frequency (GHz)0-5-10S11 (dB)-15-20-25-30-35-40-45-50
0.01

0.1

110100Frequency (MHz)SHF reserves the right to change specifications and design without notice – SHF BT45 – Rev. 1.4– 1/DEC/2004

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Insertion loss
Standard version
0S21 (d B )-1-2-3-4-505101520253035404550

Frequency (GHz)
0S21 (dB)-1-2-3-4-50.01

0.1110100Frequency (MHz)High current / high voltage options
0S21 (d B)-1-2-3-4-505

1015

20253035404550

Frequency (GHz)The spike at 47GHz is due to moding of the K connectors

SHF reserves the right to change specifications and design without notice – SHF BT45 – Rev. 1.4– 1/DEC/2004

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Isolation
0-10Isolation (dB)-20-30-40-50-60-70-80-90-10005101520253035404550Frequency (GHz)

Measured between DC port and HF port.

Options
The following options are available for the BT45. The table provides a summary of all options.
HV100
Maximum bias voltage: 100 V
Maximum bias current: 400 mA
Low frequency 3dB point: 400 kHz

HC600
Maximum bias voltage: 16 V
Maximum bias current: 600 mA
Low frequency 3dB point: 1 MHz

HV200
Maximum bias voltage: 200 V
Maximum bias current: 400 mA
Low frequency 3dB point: 2 MHz

HC1000Maximum bias voltage: 16 V
Maximum bias current: 1 A
Low frequency 3dB point: 300 MHz

HVC100/1000
Maximum bias voltage: 100 V
Maximum bias current: 1 A
Low frequency 3dB point: 300 MHz

HC2000Maximum bias voltage: 16 V
Maximum bias current: 2 A
Low frequency 3dB point: 1 GHz

I

400mA

600mA

1A

2A

fL = 20 kHz

fL = 1 MHz

fL = 300 MHz

fL = 1 GHz

U16V

100V
fL = 400 kHz

fL = 300 MHz

200V
fL = 2 MHzSHF reserves the right to change specifications and design without notice – SHF BT45 – Rev. 1.4– 1/DEC/2004

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Outline diagram

12,7Applications
5,4
13

SHF BT-45 A
16V/0,4A

Research andDevelopment

9,6

SN XXXX 20 kHz - 45 GHz

High-Speed Pulse
Experiments
Data Transmission

6,5

OpticalCommunications

6,3

13

6,3

40

12,7

The following
combinations ofconnectors areavailable.

12,6

13

16V/0,4A

SN XXXX 20 kHz - 45 GHz
9,6Please specify withyour order.

6,5

5,4

SHF BT-45 B

6,3

13

6,312,6

12,7

40

13

16V/0,4A

12,7

SN XXXX 20 kHz - 45 GHz

6,55,4SHF BT-45 C

6,3136,312,6

9,640

1316V/0,4A

9,6

SN XXXX 20 kHz - 45 GHz

6,55,4SHF BT-45 D

6,31340

6,3All dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF BT45 – Rev. 1.4– 1/DEC/2004

12,6Page 6/6