Fundamental Measurement Techniques: Network Analysis

Fundamental Measurement Techniques: Network Analysis Part One

Published: 6th January 2015

Part 5 of our new occasional series around ‘Fundamental measurement techniques’ takes a look at the basics of network analysis.

In these measurements there is clearly a need for both magnitude and phase information to fully characterise the system.

Network Analysis gives:

  • Complete characterisation of linear networks
  • Knowledge of complex impedance needed to design matching circuits
  • Measurement of complex values needed for device modelling
  • Time-domain characterisation and
  • Vector-error correction

First some basics on theory of transmission lines in that

1. For reflection, if a transmission line is terminated in Z_zero it would behave like an infinitely long transmission line

2. For reflection, a transmission line terminated in a short or open would reflect all power back to source.

However we rarely deal with linear systems and complexities rapidly evolve from

1. Linear behaviour where input and output frequencies are the same (no additional frequencies created) and output frequency only undergo magnitude and phase change to

2. Nonlinear behaviour where an output frequency may undergo a frequency shift (such as with mixers) or where additional frequencies are created (harmonics, intermodulation).

In summary, very quickly network analysis can become a complicated measurement so if in doubt get in touch and we’ll be only too glad to help.

You Might also like

Screenshot 2020 11 09 113809

Building and Testing the Next-Generation High-Performance Wi-Fi 6E Devices

With the FCC’s Report on Order establishing rules for unlicensed devices in Wi-Fi 6E and the IEEE 802.11ax rules of operation, Wi-Fi 6E device makers have a lot to consider. As exciting as this new Wi-Fi spectrum availability is, it is critical that new Wi-Fi 6E devices meet the stringent requirements for performance and interoperability.

Read more
3 series mdo Tektronix 16348 500x333

Receive FREE OPTIONS when you purchase a Tektronix NEW 3 Series oscilloscope!

The 3 Series MDO features a 11.6-inch HD (1920x1080) capacitive touch display. Up to 4 inputs with optional 16 digital channels and built-in spectrum analyser available in 1 GHz or 3 GHz versions.

Offer ends 31st December 2021.

Read more
2019 02 22 Tektronix 15860 500x333

FREE bandwidth upgrade and options when you purchase a NEW 4 Series oscilloscope.

The 4 Series MSO offers outstanding detail and accurate measurements on all channels with 6.25 GS/s on all analog and digital channels, up to 62.5 Mpoints record length and 12-bit vertical resolution (16-bit in high res mode).

Offer ends 25th June 2021.

Read more

Sign up for the MCS Newsletter

You will receive all the latest test & measurement news and rental offers.