Licky's Column

How to design a better pulse oximeter?

by Licky Li

How to design a better pulse oximeter?

Transmissive vs. Reflective A PPG signal can be obtained using a transmissive or reflective LED and PD configuration. A transmissive configuration ...

How to improve efficiency of DC-DC converters ?

by Licky Li

How to improve efficiency of DC-DC converters ?

Overview of DC/DC Converter The DC/DC stage of a power converter is a key part of a power supply. This stage converts an input constant voltage to ...

How to make wireless charging more pervasive?

by Licky Li

How to make wireless charging more pervasive?

Proprietary power extensions with Qi backward compatibility In the highly competitive inductive wireless charging market, OEMs have a continuous de...

How to combine UWB and BLE for secure entry systems ?

by Licky Li

How to combine UWB and BLE for secure entry systems ?

Combining UWB and BLE radios can create efficient secure entry systems. To understand why this is so, it is important to have knowledge of the stre...

How to get better wireless performance for mobile devices with small PCBs?

by Licky Li

How to get better wireless performance for mobile devices with small PCBs?

Embedded Antennas – how they work A dipole antenna uses two radiators to operate, but an embedded chip antenna has only one. For an embedded antenn...

How to solve PCB switching noise with simple layout rules?

by Licky Li

How to solve PCB switching noise with simple layout rules?

Signal coupling problems occur when a PCB trace with high impedance termination is next to a trace with fast-changing voltages such as a digital or...

RF PCB Design rules and Manufacturing process

by Licky Li

RF PCB Design rules and Manufacturing process

  How to design a good RF PCB Layout? Simple tips to design RF PCB layout. In this section, we will discuss the simple tips when you want to design...

RF Pcb Design Guidelines and Principles

by Licky Li

RF Pcb Design Guidelines and Principles

RF PCB design is a specialized field that focuses on designing circuit boards for applications involving high-frequency radio frequency signals. To...

Design Factors of RF PCB Circuits

by Licky Li

Design Factors of RF PCB Circuits

Designing RF (Radio Frequency) PCB circuits requires meticulous attention to various factors to ensure optimal performance in high-frequency applic...

DVI Sock: HDMI/DVI for the Raspberry Pi Pico

by Licky Li

DVI Sock: HDMI/DVI for the Raspberry Pi Pico

The Raspberry Pi Pico with its PIO state machines is able to deliver amazing things. While generating analog signals like VGA is hardly a hurdle fo...

IoT based Soil Moisture Monitoring System using ESP32

by Licky Li

IoT based Soil Moisture Monitoring System using ESP32

Components Required ESP32 Soil Moisture Sensor OLED Display Connecting Wires   OLED Display The OLED displays are one of the most common and eas...

FPGA – Field Programmable Gate Array

by Licky Li

FPGA – Field Programmable Gate Array

Basic Structure of FPGA The FPGA architecture mainly includes four parts: configurable logic block (CLB), input and output block (IOB), inter...