Recently I designed a 10W power amplifier at L-band for a satellite terminal. Good agreement between simulation and measurement was achieved. The design was done with Keysight’s ADS...Read More
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
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
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
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
We are often asked to design an antenna or match an antenna to a receiver or transmitter. Our experience includes design of the following types: patch printed helical...Read More
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
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
IBM’s DOORS software is a great tool to capture and manage product requirements, test requirements and test evidence for large systems. I have used it extensively on an...Read More
Linecalc is a useful utility that is bundled with Keysight ADS, and is used to estimate the performance of pcb transmission lines. To demonstrate what it can do,...Read More