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VNA Measurements Application Note

VNA Measurements Application Note

Basic measurements with a Vector Network Analyser In our wireless world the need of RF component testing is one of a key factors to bring a product to market. Devices are getting smaller and are containing more and more complex components. It is a must to have knowledge of complex impedance (or admittance) and reflection / transmission parameters to bring the most optimum functionality to the RF...
VNA Measurements Application Note

Real-Time vs. Swept Spectrum Analysers

Real-Time Spectrum Analyser vs Spectrum Analyser Today the RF industry has to face more and more the open question, how to transport the data from my test device (DUT) to different receiver spots (like to transmit data into World Wide Web). For IoT applications the most common way is, to use wireless transmission of data via common standards like Bluetooth, Wi-Fi or Zigbee. A more complex test s...
VNA Measurements Application Note

IoT Antenna Debugging

Wireless Communication and Function The internet of Things (IoT) is one of the fastest growing areas of technology today. In this increasing competitive field, the greatest challenge facing IoT device manufacturers is determining how to create the smallest devices possible without sacrificing performance in terms of range or power. For IoT devices that utilise radio frequency (RF) communication,...
VNA Measurements Application Note

FM signal transmission and demodulation demo

Solution: This application note is designed to show FM data transmission and modulation using some common test instruments. An FM transmission consists of a wave who's frequency is modulated, or changed, with respect to an input signal. If the input signal frequency changes, so does the carrier frequency. The modulating signal affects the FM deviation. The total deviation is a function of th...
VNA Measurements Application Note

How to measure a filter using a DSA-815-TG Spectrum Analyser

Solution: This document provides step-by-step instructions on using the Rigol DSA800 series of Spectrum Analysers to measure the characteristics of an RF Bandpass filter. NOTE: The DSA must have a Tracking Generator to effectively perform the following test. Normalise the trace (Optional) Many elements in an RF signal path can have nonlinear characteristics. In many cases, these nonlinear effec...
VNA Measurements Application Note

How to measure an amplifier using a DSA-815-TG?

How to measure an RF Amplifier using a DSA800 Series Spectrum Analyser Solution: This document provides step-by-step instructions on using the Rigol DSA800 series of Spectrum Analysers to measure the characteristics of an RF Amplifier. In addition to the DSA-800 Spectrum Analyser, you will need an RF Source, cabling, and adapters. Measure the amplifier 1. Connect the RF generator output to t...
VNA Measurements Application Note

EMC Precompliance Testing

Why is Pre-Compliance Testing done? Almost any electronic design slated for commercial use is subject to EMC (Electromagnetic Compatibility) testing. Any company intending to sell these products into a country must ensure that the product is tested versus specifications set forth by the regulatory body of that country. In the USA, the FCC specifies rules on EMC testing. CISPR and IEC test definit...
VNA Measurements Application Note

EMC Precompliance: Conducted Emission Testing

EMC Precompliance Testing: Conducted Emissions Electromagnetic Interference (EMI) can cause undesirable effects on electronic products. These effects can range from annoying glitches to rendering a product unusable. In an effort to minimise these issues, countries have established standards and limits to products that are being sold within that market. This Electromagnetic Compatibility (EMC) ...
VNA Measurements Application Note

EMC Precompliance: Near Field Probes

EMC Pre-Compliance Testing: Near Field Probing Solution: Electronic products can emit unwanted electromagnetic radiation, or electromagnetic interference (EMI). Regulatory agencies, such as the FCC in North America, create standards that define the allowable limits of EMI over specific frequency ranges. Testing designs and products for compliance to these standards can be difficult and expensive...
VNA Measurements Application Note

Measuring Cable Loss with a Spectrum Analyser

Testing Cable Loss with a Spectrum Analyser Solution: A spectrum analyser with a tracking generator can be a useful piece of test gear. This application note covers making a simple loss measurement on a coaxial cable with BNC connectors. Required: – Two N-type to BNC Adapters. Select adapters that convert N-type (in/out connectors on most spectrum analysers) to the cable type you are testin...