In the blog 'Go for a perfect PCB design and get off to a flying start with these 3 steps' taught you what to pay attention to when designing a new PCB design. However, it doesn't stop there, the following points also help prevent production loss. Go for the perfect PCB design with our tips and learn everything you need to know to turn your design into a working product as efficiently as possible.
1. Use already certified radio modules for the perfect PCB design
If your product uses Bluetooth or WiFi, try using a pre-certified radio module. These modules are pre-designed and packaged systems that are guaranteed to function properly with an associated FCC identification number. Using a pre-certified radio module increases the chance of a properly functioning wireless system and also reduces the chance of failing FCC and CE radio emissions compliance testing.
2. Consider the layout of your wireless antenna
The PCB layout of any antennas is critical. For most wireless connectivity components (a transceiver), there is a recommended layout in the manufacturer's datasheet. Following the recommended layout is likely your fastest path to success.
There are a number of things to pay attention to when creating the PCB layout. First, adjust the impedance between the transceiver and the antenna. Secondly, the transceiver data sheet should provide more detail on selecting the correct antenna, designing a 'tuning filter' and the correct impedance required for maximum performance.
We recommend performing pre-compliance testing on your product if you are designing your own wireless connectivity. The pre-compliance testing will hopefully catch any obvious issues with your design. Look for frequency harmonically and within what you are aiming for in the clocks, oscillators and transmission spectrum.
3. Don't forget the decoupling capacitors
Electrical components need stable voltage sources. In addition, decoupling capacitors, also called decoupling capacitors, should be included on your PCB near each individual active component. Decoupling capacitors work best when they are as close to the power pins of the component as possible.
For larger components, with multiple power pins, you may need decoupling capacitors at each power pin. Power sensitive components such as sensors, ADCs and FPGAs, you may also want to include disconnect caps for the ground pins. The decoupling capacitor should be in line with the power source and the component as this improves the performance of the capacitor.
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