Application Notes

1. Fast Switching, High Performance PLL And Quadband VCO Frequency Synthesizer 8/22/2022

   PLLs are used to generate RF and IF signals from less than 1 MHz to tens of GHz and higher. Application requirements vary widely, and PLL design and optimization involves trading off parameters such as power consumption, phase noise, frequency tuning range, frequency resolution, and lock time.

2. USB Powered 5.8 GHz RF LNA Receiver with Output Power Protection 4/19/2022

   The 5.8 GHz band is preferred for short range digital communication applications because of the number of channels and the bandwidth available. This design provides high gain, robust overpower monitoring, and protection all in a small footprint.

3. How To Make A Digital Predistortion Solution Practical And Relevant 11/22/2021

   According to much of the promotional material for digital predistortion (DPD), its performance is based on static quantitative data. The demands of 5G NR continue to push application requirements. This, coupled with the desire for higher PA efficiencies, compounds the challenge of DPD algorithm development.

4. Meeting Biasing Requirements Of Externally Biased RF/Microwave Amplifiers 10/18/2021

   Radio frequency (RF) and microwave amplifiers provide their best performance under specific bias conditions. The quiescent current established by the bias point affects critical performance metrics such as linearity and efficiency. While some amplifiers are self biased, many devices require external biasing using multiple supplies that must be sequenced properly for safe operation.