Author: Peter King
Site Surveys
Recently I was asked to investigate interference in the 2.4GHz ISM band at a particular location to ascertain which bands were most clear of spurious. The following plot... Read More
Satellite Link Modelling
Recently I modelled the DVB-S2X and DVB-RCS2 PHY layers, created link budgets for various GEO and LEO scenarios, and modelled the impact of every RF impairment on the... Read More
Channel Modelling
Since doing my PhD in radio propagation 10 years ago, I have often been asked to create channel models for Clients and program channel emulators. Recently I have... Read More
Product Development
One of the largest jobs we secured was for some signal generator modules with USB control from a PC. The development took nearly one year working during the... Read More
What is EVM?
EVM or Error Vector Magnitude is a measure of how the measured constellation points deviate from the ideal locations. EVM(%) = sqrt(P_error / P_reference) * 100 P_error... Read More
LNA Design Principles
Here follows a basic tutorial on LNA design described by example using ADS. The steps involved usually follow the sequence: Define LNA requirements Select device(s) Find good bias... Read More
