Remote Bias Tee (Rbt) And 3-Port Power Divider; Rbt; 3-Port Power Divider - Keithley 4200-SCS User Manual

Section 1: Getting Started

Remote bias tee (RBT) and 3-port power divider

The 4205-RBT and power divider are used for the Keithley Instrument's PulseIV-Complete and
Demo-PulseIV projects. Two RBT adapters and one 3-port power divider are included with the
4200-PIV-A solution bundle. Also included are two 4200-MAG-BASE mounts (that attach bias tee
adapters to the prober platen magnetically). For more information, refer to the
PulseIV-Complete and Demo-PulseIV projects, page

RBT

The RBT adapter (see
Model 4205-PG2 pulse generator channel. The output of the RBT provides pulse output riding on
the DC V bias.
As shown in
SMU (FORCE and SENSE), and two female SMA connectors, one for AC inputs, such as a pulse
generator card and scope card (Model 4200-SCP2HR or 4200-SCP2), and one for AC+DC output
connection to a prober or directly to a DUT.
Figure 1-23
pulse generator card to pass through to the output, while blocking DC from the SMU. The
inductors allow DC from the SMU to pass through to the output, while blocking pulses from the
pulse generator.
Figure 1-23
Model 4205-RBT simplified schematic

3-port power divider

port power divide
The 3-
16.67 W resistor in each "leg" (see
provide an impedance matched signal (pulse) path (50 Ω).
As shown in
SMA male connector. The SMA male connector allows the power divider to connect directly to the
RBT (AC input).
1-26
Figure 1-23) is a coupler for DC bias from a SMU, and pulse output from a
Figure 1-23, the RBT has two three-lug female triax connectors for connection to a
also shows the simplified schematic of the RBT. The capacitor allows pulses from the
Connect to
1
SMU SENSE
Connect to
1
SMU FORCE
4205-RBT Remote Bias Tee
3-Lug Triax Connectors
(female)
1) When using a SMU PreAmp, use 4200-TRX-X cables for connections. When
NOT using a PreAmp, use 4200-MTRX-X cables for connections.
2) Use SMA cables (male-to-male) for connections.
r divides the electrical power equally among its three connectors using a
Figure 1-24, the power divider is equipped with two SMA female connectors and one
Return to
12-4.
Connect to pulse generator card
2
and/or scope card
AC Input
20kW
Figure 1-24). The power divider is used on the gate of a FET to
Section Topics
Model 4200-SCS User's Manual
Reference Manual,
SMA Connectors
(female)
Connect to DUT
2
or Prober
4200-900-01 Rev. K / February 2017