Licky's Column

Design Guidelines for RF and Microwave PCB Assembly

by Licky Li

Design Guidelines for RF and Microwave PCB Assembly

Essential Design Guidelines for RF And Microwave PCB Assembly Here are some of the pitfalls of this process in an attempt to prevent them from happ...

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 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...

Heavy Copper PCB – What makes it the most heavy-duty circuit?

by Licky Li

Heavy Copper PCB – What makes it the most heavy-duty circuit?

What is heavy copper PCB? We know PCBs are made of non-substrate and copper material where copper works by conducting electricity through th...

Building an RF Switching Unit

by Licky Li

Building an RF Switching Unit

  In my case, I was interested in having a way to electronically switch connections for test equipment. It's a real pain having to swap out connec...

DC Motor vs Stepper Motor vs Servo Motor

by Licky Li

DC Motor vs Stepper Motor vs Servo Motor

1. Brushed and Brushless DC Motors DC motors are electromagnetic devices that use the interaction of magnetic fields and conductors to convert elec...

How are PCB voids formed in SMT processing?

by Licky Li

How are PCB voids formed in SMT processing?

What are the reasons for PCB voids in SMT processing? First of all, we need to understand the process of SMT processing. SMT (Surface...

10 common electronic components and their symbols

by Licky Li

10 common electronic components and their symbols

Resistor Resistor will cause a change in the flow of electrons. The smaller the resistance, the greater the flow of electrons, and vice v...

How Flash Memory Works – Advantages & Disadvantages

by Licky Li

How Flash Memory Works – Advantages & Disadvantages

What is Flash Memory? Flash memory is a type of erasable read-only memory (EEPROM) that clears and rewrites data in chunks for fast, energy-efficie...

What is read only memory (ROM)? Types of ROM defined

by Licky Li

What is read only memory (ROM)? Types of ROM defined

Read-Only Memory (ROM), is a type of electronic storage that comes built in to a device during manufacturing. You’ll find ROM chips in computers an...