Almost every system today is going wireless, and not just for connectivity to the Internet. Making systems wire-free for connectivity has almost become a mantra for companies.
Standard mechanical switches do not work well with RF. At high frequencies, signal coupling can occur across mechanical contact gaps, which can act like a capacitor in a high-pass filter.
To get started on a wireless system design, engineers can turn to a wide variety of low- to moderate-cost development/evaluation boards to evaluate the functionality of the chips they are considering.
Cell phones and other wireless systems that contain multiple radios and multiple antennas often share some of the antennas to reduce system clutter.
In every RF receiver system, low-noise amplifiers (LNAs) can be used to improve the signal-to-noise ratio by replacing amplifiers with higher internal noise levels.
The last output stage in every wireless system includes some form of RF power amplifier (PA) to send the signal to the antenna.
Today the word “smart” is being added to applications or products to imply that they work autonomously in a programmable environment.
Backlit displays have become ubiquitous, wherever you go today you see them, and judging the product primarily on the merits of its display.