How to Enterprise a PCB Antenna for 2.4GHz

 

How to Enterprise a PCB Antenna for 2.4GHz

Antennas are anywhere nowadays; a maximum of the mainstream technologies like smartphones, safety, and IoT gadgets use antennas to communicate among them, and that's why RF turns into one of the most charming and strong corners of engineering and design. So, my aim today is to offer readers some simple ideas about what an antenna is, how it works & a way to build your 2.4 GHz antenna.

Before we start, allow me to tell you, I am not an RF expert, but I do have a few over the years’ revel in to inform you some of the basics to rise up and going for walks together with your project.

Antennas in General

Although the concern of this newsletter says PCB antenna for two.4GHZ, however some basic background facts about antennas can be very beneficial for novices in case you are a pro and in case your goal is just only to learn about a PCB antenna, you can bypass this part.

To understand antennas better, one ought to take a quick overview of impedance matching and resonance circuits. It's proven that to transfer most power, the supply impedance should exactly be the same as the burden impedances.

An antenna is a construction that is made up of steel objects, often twine or a set of wires used to convert high-frequency contemporary into electromagnetic waves and vice versa. In well-known, you could say it's a special type of transducer that converts high-frequency currents into EM waves.

An antenna should have the ability to shape the transmission line and the load, depending upon the frequency, cord period, and dielectric material; the twine acts as an impedance matching transmission line; we can talk extra about this later in the article.

An antenna rather must act as a resonance circuit, i.E. It must have the capability to transfer power from electrostatic to electromagnetic; if the impedance healthy is correct, the energy will start the transfer, and it'll be radiated into the ecosystem in an identical manner that a transformer transforms electricity from its primary to secondary.

The above dialogue is an over-simplification of the method that is encountered in the RF transmission; however, you may view it as a foundation for similarly discussion

Wavelength, Frequency, and Length of an Antenna

In an antenna, wavelength, frequency, and antenna duration depend on every difference, and I am going to provide an explanation for these three parameters with a simple instance.

The period and form of the antenna are associated with the wavelength of the transmitter frequency; i.E. The mechanical period is inversely proportional to the numerical fee of the frequency;

As we all recognise the formulation-

T=1/f

Where T = Time

 F = frequency

So, for a feeler operating at 50MHz,

t =1 or f = 0.2uS,

Then wave-length (λ) = C/f = three*10^8 / 50*10^6 = 6m

Where, C is the velocity of mild.

For a quarter wavelength antenna, it will become λ /4 to be constant.

The above simple example become to show you ways you may calculate the wavelength for a positive frequency

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