The above basic example was to show you how you can calculate the wavelength for a certain frequency the mechanical length is inversely proportional to the numerical value of the frequency Īnd the wavelength (λ) = C/f = 3*10^8 / 50*10^6 = 6mįor a quarter wavelength antenna, it becomes λ /4 to be fixed. The length and shape of the antenna is related to the wavelength of the transmitter frequency i.e. In an antenna, wavelength, frequency, and antenna length depend on each other, I am going to explain these three parameters with a basic example. The above discussion is an over-simplification of the process that is encountered in the RF transmission but you can view it as a basis for further discussion Wavelength, Frequency, and Length of an Antenna it must have the ability to transfer energy from electrostatic to electromagnetic, if the impedance match is correct, the energy will begin the transfer and it will be radiated into the atmosphere in the same way that a transformer transforms energy from its primary to secondary. In general, you can say it's a special type of transducer that converts high-frequency currents into EM waves.Īn antenna must have the ability to match the transmission line and the load, depending upon the frequency, wire length, and dielectric material, the wire acts as an impedance matching transmission line, we will discuss more on this later in the article.Īn antenna somewhat must act as a resonance circuit i.e. It's proven that to transfer maximum power, the source impedance must exactly be equal to the load impedance.Īn antenna is a structure that is made up of metallic objects, often wire or a group of wires used to convert high-frequency current into electromagnetic waves and vice versa. To understand antennas better, one must take a quick review of impedance matching and resonance circuits.
Qucs pcb antenna design pro#
Antennas in GeneralĪlthough the subject of this article says PCB antenna for 2.4GHZ, but some basic background information about antennas will be very useful for beginners if you are a pro and if your intention is just only to learn about a PCB antenna, you can skip this part.
Qucs pcb antenna design how to#
So, my goal today is to give readers some of the basic ideas about what an antenna is, how it works & how to build your 2.4 GHz antenna.īefore we start, let me tell you, I am not an RF expert, but I do have some over the years’ experience to tell you some of the basics to get up and running with your project. Antennas are everywhere these days, most of the mainstream technologies like smartphones, security, and IoT devices use antennas to communicate between them and that's why RF becomes one of the most fascinating and robust corners of engineering and design.
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