User’s Guide RIGOL
Sep. 2012
VB1020 VSWR Bridge
Product Overview
VB1020 is used in combination with the RIGOL DSA series spectrum analyzer to measure
S11-related parameters (such as return loss, reflection coefficient and VSWR). VB1020
provides three N female connectors as shown in the figure below.
— IN: Signal input terminal. Here the signal
generator or the output terminal of the
tracking generator of the spectrum analyzer is
connected.
— OUT: Signal output terminal. Here the
wattmeter or the RF input terminal of the
spectrum analyzer is connected.
— DUT: Here the device under test is connected.
Measurement Connection
Connect VB1020 to the spectrum analyzer as
shown in the figure on the right.
— Connect the spectrum analyzer
Use 2 adaptors (N male-N male) to
connect the output terminal of the
tracking generator and the RF input
terminal of the spectrum analyzer to the
IN terminal and OUT terminal of the
VSWR bridge respectively.
— Connect the device under test
Do not use cables or adaptors as far as possible to avoid additional reflection.
Typical Applications
— Measurement of the S11-related parameters of the filter, amplifier, mixer, etc.
— Resonant frequency and VSWR tests of the antenna.
VSWR Bridge
Spectrum Analyzer
Adapter
Connect the device under test
User’s Guide RIGOL
Sep. 2012
Specifications
Frequency
Frequency range 1 MHz to 2 GHz
Connector
Connector type N (Female) Type
Adaptor Dual N (Male) Type
Impedance 50 Ω
Insertion Loss
IN to DUT 5 dB (typical)
Directivity
Typ. 20 dB
Min. 15 dB
Input Power
Maximum Input Power +27 dBm (0.5 W)
General Specifications
Dimensions
130 mm×75 mm×30 mm
With Package 256 mm×190 mm×43 mm
Weight
0.5 kg
With Package 1.2 kg
Operation Temperature
-20 ℃ to 80 ℃
Storage Temperature
-40 ℃ to 100 ℃