R&S®ZNBT Vector Network Analyzer
Network analysis with up to 24 test ports
Key facts
  • Four-port R&S®ZNBT8 base unit, upgradeable to 8, 12, 16, 20 or 24 ports
  • Eight-port R&S®ZNBT20, R&S®ZNBT26, R&S®ZNBT40 base unit, upgradeable to 12, 16, 20 or 24 ports
  • Frequency range from 9 kHz to 8.5 GHz (R&S®ZNBT8) or from 100 kHz to 26.5 GHz or 40 GHz (R&S®ZNBT20)
  • Up to 24 fully phase‑coherent receivers
  • Wide dynamic range of up to 140 dB
  • Short sweep times, e.g. 2.1 ms (R&S®ZNBT8) and 2.5 ms (R&S®ZNBT20) for a sweep across 201 points
  • Wide power sweep range of 100 dB
  • High power handling capacity
  • IF bandwidths from 1 Hz to 10 MHz
  • High temperature stability of 0.01 dB/°K
  • More than 100 traces and channels
  • Simple configuration of multiport measurements
  • Manual and automatic calibration methods optimized for multiport applications
  • Status information
  • Compatible with all vector network analyzers from the R&S®ZVA/R&S®ZVT and R&S®ZNx families
Brief description
The R&S®ZNBT is the first multiport vector network analyzer offering up to 24 integrated test ports. The instrument can simultaneously test multiple DUTs or measure one DUT with up to 24 ports.
The R&S®ZNBT offers short measurement times even in scenarios with a large number of ports. Other highlights include a wide dynamic range, high output power levels and inputs featuring high power-handling capacity.
The instrument is available in two different frequency ­ranges: The R&S®ZNBT8 operates in a range from 9  kHz to 8.5 GHz, the R&S®ZNBT20, R&S®ZNBT26 and R&S®ZNBT40 from 100 kHz to 20 GHz, 26.5 GHz and 40 GHz, respectively. These features make the R&S®ZNBT ideal for applications in the mobile radio, wireless communications and electronic goods industries.
The instrument is primarily used in the development and production of active and passive multiport components such as GPS, WLAN, Bluetooth® and frontend modules for multiband mobile phones. Its outstanding performance also allows efficient analysis of base station filters and other highly selective components.
The R&S®ZNBT outperforms switch matrix based multi­port systems. Its high integration ­density makes it a very compact solution for analyzing components with up to 24 ports while requiring no more rack space than an R&S®ZNB.
The convenient user interface makes it easy to handle even very complex multi­port measurements. The R&S®ZNBT supports various remote control options and is easy to integrate into automated test systems, for example for carrying out phased-array antenna measurements.

Features & Benefits
  • Platform for challenging multiport measurements
    • True multiport network analyzer
    • Multiport measurements made easy
    • Measurements at high power levels
  • When speed counts
    • Short test times with a large number of ports
    • Data transfer simultaneously with sweep
    • Fast switchover between instrument setups
    • Test sequence control via TTL signals
    • Handler I/O interface for control of external parts handlers
    • Simultaneous testing of multiple DUTs
    • Segmented sweep for optimized speed and accuracy
    • Extended dynamic range for fast measurements on high‑blocking filters
  • Excellent measurement characteristics
    • Fast and accurate
    • High long-term stability for long calibration intervals
    • Calibration methods for every application
    • Calibration units speed up multiport calibrations
  • Complex analysis of active and passive components
    • More than 100 traces and channels for characterizing complex components
    • Wide range of virtual matching networks for realtime embedding/deembedding
    • Frequency-converting measurements on amplifiers and mixers
    • Simple and fast characterization of balanced DUTs
    • Time domain analysis with gating function and display of eye diagrams
    • Voltage and current measurements
    • Measurements on frontend modules (FEMs)