A trace antenna is an antenna made out of a small strip of copper wire on the PCB which just happens to resonate at certain frequencies. This could be intentional, like an F antenna design for 2.4 ...
Making traces wider on the PCB can be advisable here, but ultimately you have to know what is best for your design, as each project has its own requirements. Even when the calculations look good ...
No user-serviceable parts inside? Give me a break! The head unit is tough to get to, but the PCBs within the chassis use ...
The impedance of a PCB trace is proportional to its parasitic ... To determine the impedance spec that a design must target, the engineer must know their maximum load step and the allowable ...