Vector network analysers
Vector network analysers measure S parameters (S11, S21, S12, S22) to characterise the frequency, phase and impedance response of RF and microwave components. They can be used to assess insertion loss, reflection, mismatch and coupling in ranges extending from 9 kHz to 67 GHz, and even 120 GHz with millimetre extensions. In R&D, they are used to develop filters, amplifiers, duplexers and antennas, while in production, they validate the conformity of microwave sub-assemblies. Two-, four- or eight-port architectures ensure accurate differential measurements, with systematic errors corrected by SOLT, TRL or ECal calibration. In metrology, they guarantee traceability of amplitude and phase measurements to ISO 17025. Modern models include TDR time analysis, Smith Chart display and inverse frequency-time conversion. Connected via LAN, USB or GPIB, they can be integrated into automated test benches for complete characterisation of passive or active networks.
A fundamental RF tool, the VNA establishes the link between design, modelling and actual measurement.
SEARCH :
Bandwidth
BRANDS :
DO YOU NEED HELP?
85047A
KEYSIGHT / AGILENT / HP
Module Paramètres S pour HP 8753 avec bande passante de 300KHz à 6GHz.
8752A
KEYSIGHT / AGILENT / HP
Analyseur de réseaux 300KHz à 1.3GHz avec mesures vectorielles.
8753C
KEYSIGHT / AGILENT / HP
GP-IB programmable 300 KHz to 6 GHz vector network analyser.
E5061A-250
KEYSIGHT / AGILENT / HP
Colour Vector Network Analyser: 300KHz/1.5GHz with S-parameter test set.
N4431B
KEYSIGHT / AGILENT / HP
Electronic calibration module for vector network analysers.
E5071C- 4D5019-TDR-UNQ
KEYSIGHT / AGILENT / HP
High-performance vector network analyser for RF/microwaves.
8757D
KEYSIGHT / AGILENT / HP
Colour scalar network analyser with GPIB and bandwidth from 10MHz to 110GHz.
8753D
KEYSIGHT / AGILENT / HP
Vector network analyser with wide bandwidth from 30KHz to 6GHz.
E5061B-3L5
KEYSIGHT / AGILENT / HP
Analyseur de réseau et impédance basse fréquence 5 Hz à 3 GHz.
ANT20SE
JDSU / ACTERNA / VIAVI
High-performance network analyser for accurate measurements.
P937XB & P938XB
KEYSIGHT / AGILENT / HP
Compact vector network analyser with Thunderbolt 3 interface.
N5222B-417
KEYSIGHT / AGILENT / HP
VNA 4-port vector network analyser, 10 MHz to 26.5 GHz.
8757C
KEYSIGHT / AGILENT / HP
Scalar colour display from 10 MHz to 40 GHz with 75 dB dynamic range.
MS4644A
ANRITSU
10 MHz to 40 GHz vector network analyser with USB, GP-IB and LAN interfaces.
85025E
KEYSIGHT / AGILENT / HP
10MHz to 26.5GHz detector, 3.5mm connector for scalar analyser.
ZVL3-75
ROHDE & SCHWARZ
Vector network analyser 75 Ω, 9 KHz to 3 GHz, compact and lightweight.
concrete questions about Vector network analysers
01
What is the purpose of a vector network analyser?It measures the S parameters (S11, S21, etc.) of an RF component or system, to characterise reflection, transmission, impedance matching or losses. It is a central tool in RF or microwave design and validation.
02
What's the difference with a spectrum analyser?The spectrum analyser observes the amplitude of an existing signal, while the VNA injects a reference signal and analyses how it is modified by the device under test. The VNA measures amplitude and phase, enabling complete modelling.
03
What components can be tested with a VNA?Filters, antennas, amplifiers, duplexers, cables, connectors, RF printed circuits, adapters, etc. It is also used for antenna adjustment or reflection coefficient measurement (VSWR).
04
What are the critical options to watch out for?The frequency range, number of ports (2, 4...), dynamic range, phase and amplitude accuracy, scanning speed, and the presence of automatic calibrations or calibration kits adapted to the connectors used.
05
Are reconditioned VNAs reliable for RF validation?Yes, if the linearity, stability and measurement performance have been validated in metrology. Some previous generation VNAs are still technically very competitive, especially for ranges < 8 GHz or non-critical benches.
