Application of Printed Double-sided Circuit Boards in Communication Equipment

The significant advantages of double-sided circuit boards

Higher wiring density: 

Compared to single panels, it has twice the wiring space, allowing for the design of more complex circuits.

Stronger design flexibility: 

Two sided wiring, combined with via connections, allows for more routing options, making it easier to bypass obstacles and optimize layout.

Smaller size: 

Usually more space saving than a single panel when achieving the same functionality.
Better signal integrity (compared to single panel): Reasonable stacking and ground plane (partial) design can provide a certain signal loop path, reducing electromagnetic interference (EMI) and crosstalk. Double sided ground wire mesh is a common practice.
High cost-effectiveness: The manufacturing cost is much lower than that of multi-layer boards (4 layers or more) (eliminating complex processes such as lamination and inner layer production), while also meeting more complex circuit requirements than single panel boards, with outstanding cost-effectiveness.
Mature manufacturing process: With a long history of development, the process is very mature and stable, with high yield and relatively short production cycle.
Suitable for medium complexity circuits: It is an ideal bridge between simple single panels and complex multi-layer boards.

The main application areas of double-sided circuit boards

Double sided panels are widely used due to their excellent cost-effectiveness and sufficient complexity carrying capacity

Consumer electronics products:

Mobile phone charger, power adapter
Mainboards or functional module boards for televisions, set-top boxes, and audio equipment
Home appliance control board (air conditioner, refrigerator, washing machine, microwave, rice cooker, etc.)
Electric toys
Keyboard, Mouse, Gamepad
Small household appliances (such as electric fans, humidifiers, LED desk lamps)

Industrial Control and Automation:

Industrial sensor interface board
Motor driver control board
Programmable Logic Controller Module
Instrumentation (such as power supplies, oscilloscopes, and circuit boards for multimeters)
Industrial computer interface board, acquisition card

Automotive Electronics:

Vehicle control module (control of lights, doors and windows, wipers, etc.)
Simple ECU peripheral circuit
Instrument panel display panel (partial)
Entertainment information system (radio, basic audio)
Sensor interface board (temperature, pressure, etc.)

Communication equipment:

Mid to low end models or partial functional boards of routers and switches
modem
Partial auxiliary circuit board of the base station
telephone

Computers and peripherals:

Some auxiliary small cards on the motherboard (such as certain jumper boards, interface conversion boards)
Low end models or auxiliary circuits of graphics cards
Control board for printers and scanners
Main control board for USB flash drives and portable hard drives

Medical Electronics:

Relatively simple medical equipment control board (such as blood pressure monitor, blood glucose meter, basic monitor module)
Power module and interface board for medical instruments

LED lighting:

LED driver power board
LED display control board (partial)

Power system:

Main control board and driver board for various switching power supplies, regulated power supplies, and inverters

Testing and measuring equipment:

Various testing fixture boards and interface boards
Circuit board for simple testing instruments