Design Guide: Fundamentals of RF and Microwave PCBs

Tài liệu : Những nguyên tắc cơ bản trong thiết kế PCB cho Microwave và RF

The electromagnetic spectrum consists of a number of radiations that are classified based on their frequency or wavelength bands. These include radio waves, infrared waves, microwaves, visible light, ultraviolet rays, and gamma rays.

The electronic circuits that operate in the frequency ranges of radio waves (3Hz - 300GHz) and microwaves (more than 1GHz) are considered RF electronics. These devices form a major part of the electronic gadgets available today. We use electronic goods that operate in the high-frequency spectrum. The circuits of these devices are equipped with PCBs designed to provide maximum efficiency while dealing with signals in the radio frequencies.

As mentioned earlier, the signals in the electromagnetic spectrum with frequencies between 3Hz and 300GHz fall in the radio frequency range. Among these signals, the ones with frequencies above 1GHz are termed microwaves. The name comes from the small wavelengths that these signals exhibit. These waves are widely used in applications such as radar,
cooking, RF transmission, and so on.