With that being said let's design it! Choosing the right type of antenna Instead, I am going to discuss some of the core concepts, best practices, and things to keep in mind. Now the basic out of them, we can turn our focus to the main attraction of the blog which is PCB antenna design.īefore continuing, let me tell you that I am not going to go bit by bit and explain all the very details about every aspect of a PCB antenna because I do not have the level of expertise, tools, and measurement needed for this kind of detailed explanation. So, if you do the same calculation for 2.45GHZ, we will get an antenna length of 23mm. 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.
0 kommentar(er)
