Swissmade
OH4VNA
OH4VNAbanner2.png
OH4VNA
The advanced graphical-user-interface enables computer-aided control and measurement:
Computer guided setup of the VNA, frequency band, calibration, measured data, and target data
Full remote control of the VNA
Calibration view for fast and reliable open-short-load calibration
Measurement view with various data viewers such as log-magnitude or Smith chart
Post-processor features to directly compare the measurement results with imported target dataMillimeter-wave pseudo-vector power density probes

OH4VNA - Optical Head for Vector Network Analyzers

SPEAG’s Optical Head for Vector Network Analyzers (OH4VNA) is a bi-directional radiofrequency-over-fiber system based on our proven optical time-domain sensor technology. OH4VNA facilitates accurate S11 measurements of electrically small antennas and devices and eliminates distortions caused by the radiofrequency measurement cable. The system consists of a miniaturized, fully isolated optical head with exchangeable couplers covering 500 MHz – 6 GHz. As the optical head employs power-over-fiber, it requires no external or battery power. The OH4VNA remote unit acts as the optoelectrical interface to the VNA. Both units are controlled via PC software optimized for S11 measurements and system calibration with the calibration kit included. 

System 

An OH4VNA system is composed of an OH4VNA Remote Unit, an optical head (OH), miniature directional coupler modules, a calibration kit, and a PC based software for measurement equipment control and post-processing. 

Applications

OH4VNA is optimized for measurement of S11 of electrically small antennas in:

  • mobile phones
  • hearing aids
  • in-ear devices
  • body-worn devices
  • implanted devices
  • hand-held devices, like barcode readers and two-way radios.
Basic Configuration

OH4VNA basic configuration contains the following elements:

  • OH4VNA Remote Unit (RU)
  • Optical Head (OH)
  • Wideband Coupler Modules (C4OH)
  • Calibration Kit (MCK4OH)
  • In-Circuit Adapters (ICA4OH)

OH4VNA RU

OH4VNA Remote Unit specifications:

  • OH interconnect: TDS MU8 optical interconnect
  • VNA interconnect: 3.5mm RF connector
  • frequency range: 10 MHz - 6 GHz
  • RF dynamic range: >130 dB
  • RF P1dB: >0 dBm
  • RF return loss: >10 dB
  • power and control: USB

OH

OH4VNA Optical Head specification:

  • frequency range: 500 MHz - 6 GHz
  • RF dynamic range: >100 dB
  • electrical size: 6 × 6 mm (cylinder)
  • mechanical size: 10 mm diameter
  • antenna interconnect: via couplers (Mini-SMP)

C4OH

OH4VNA Coupler specifications:

  • low frequency range: 500 MHz - 1.5 GHz
  • high frequency range: 1 GHz - 6 GHz
  • antenna interconnect: Mini-SMP

MCK4OH

OH4VNA Calibration Kit specifications:

  • calibration standards: open/short/load
  • calibration data: touchstone
  • frequency range: 500 MHz - 6 GHz
  • connectors: Mini-SMP

Accessories

In-Circuit PCB adapter

Mini-SMP to SMA adapter

Software

The advanced graphical-user-interface of the OH4VNA V1.2 software enables computer-aided control and measurement:

  • Computer guided setup of the VNA, frequency band, calibration, measured data, and target data
  • Full remote control of the VNA
  • Calibration view for fast and reliable open-short-load calibration
  • Measurement view with various data viewers such as log-magnitude or Smith chart
  • Post-processor features to directly compare the measurement results with imported target data

API

A Python interface allows the user to customize and automate the measurement process with simple or extensive scripts.  

Calibration

The OH4VNA system comes with a calibration kit compatible with mini SMP connectors

Unique Features

frequency range

miniature interface

easy to use

durable

500 MHz - 6 GHz

electrical size  present to antenna 6 × 6 mm (cylinder)

full software automation of measurement and post-processing

exchangeable coupler modules to replace Mini-SMP connectors

Benefits

wide-band

optical link

trusted

enables the testing of wideband or multi-frequency antennas with one connection and removes the need to adapt your setup with narrow-band chokes

removes the influence of electrical cables on the S-parameter measurements

validated system in real-life applications

Compatibility

OH4VNA is compatible with most modern vector network analyzers - see VNA compatibility.

Product History see Product Lifetime

 
 
CONTACT INFORMATION
 
Latest News