Showing Posts From
Wireless Communication
6 articles
- 22 Oct, 2026
An Introduction to eSIM Technology
This article, drawing from engineering practices with 5G RedCap modules such as the Quectel RG255C-NA00AB, offers a systematic and comprehen…
- 15 Jul, 2026
Summary of 5G/LTE Working Modes
Power management of 5G and LTE modules is a core component in hardware design and BSP driver development. To strike a balance between respon…
- 20 Jan, 2025
Summary of Learning on RF Circuit Components
This note provides a brief summary of the basic working principles and applications of various common component circuits in wireless radio f…
- 17 Jan, 2025
Correction to My Understanding of Dual-Band WiFi Antenna Multiplexing and a Comparison Between Duplexer and Diplexer
Previously, in another note of mine describing 2.4GHz and 5GHz dual-band WiFi sharing a single antenna for communication, based on my unders…
- 15 Jan, 2025
The Basics of Dipole Antennas and Antenna Gain
According to the book LTE Tutorial: Principles and Implementation: The half-wave dipole antenna is the most fundamental structural unit of a…
- 03 Jan, 2025
Fundamental Phase Modulation Techniques: BPSK, QPSK, and DQPSK
Carrier modulation methods that manipulate phase, such as BPSK and QPSK, are widely used in wireless communications today. The lower-specifi…