Integer N Synthesizer Design for LoRa Transceivers

Main Author: Vítor Fialho
Other Authors: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP)
Format: Article Journal
Bahasa: eng
Terbitan: , 2021
Subjects:
Online Access: https://zenodo.org/record/5413215
Daftar Isi:
  • This paper presents the study and design of an Integer N synthesizer model for three LoRa ISM bands: 430 MHz 868 MHz and 915 MHz. The proposed topology is composed by two voltage controlled oscillators working in two different bands. The presented model uses the same phase-frequency detector, charge pump and loop filter. This study is focused on dynamic and steady-state analysis in order to infer the synthesizer stability and bandwidth. The performed study shows that the settling time for all bands is less than 40 μs for a bandwidth of 102 kHz.