1461531100

Series:	146153
Part Status:	Active
Frequency Group:	UHF (2 GHz ~ 3 GHz), SHF (f > 4 GHz)
Frequency (Center/Band):	2.4GHz, 5GHz
Antenna Type:	Flat Patch
Number of Bands:	2
VSWR:	--
Return Loss:	-10dB
Gain:	3dBi, 4.5dBi
Power - Max:	2W
Features:	--
Termination:	Cable (100mm) - U.FL
Ingress Protection:	--
Mounting Type:	Adhesive
Height (Max):	0.004" (0.10mm)
Applications:	WLAN, Zigbee™

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RF Antennas

RF Antennas are a key technology for wireless communications, providing a link between the transmitting and receiving devices. In its simplest form, an antenna is a metal wire or rod designed to radiate (or receive) electromagnetic energy at radio frequencies (i.e., from 3 kHz to 300 GHz). By sending and receiving a wireless signal, antennas enable an RF system to further communicated with other systems or devices.The 1461531100 application field is vast, as RF antennas are used in an array of communication systems. From broadcast TV and radio networks to communication systems in aerospace, defense, and engineering applications, RF antennas transmit and receive radio frequency signals, thus enabling users to effectively transmit various forms of data. The working principle of RF antennas is as simple as it is important for wireless systems. When there is an EM wave generated by a transmitting device, the antenna catches it and amplifies it, allowing for further transmission throughout the air. On the other hand, when the EM wave is emitted by the antenna, it propagates in the air and then meets the receiving device\'s antenna, it will be amplified by the antenna and thus will be able to make it to the receiver. The efficacy of an RF antenna depends on several factors including its orientation, shape and size, material of its element, antenna array parameters, and its distance from the source. It is important to understand the needs of the antenna, its specific application, and design the antenna accordingly. The selection and design of an RF antenna depends on the type of application and the environment within which the antenna operates. Different types of antennas are designed to operate over different frequencies depending on the application. For example, TV antenna needs to operate over the UHF and VHF bandwidths (450 MHz to 806 MHz), while a WLAN antenna needs to operate within the ISM band (2.4GHz to 2.48GHz). The antenna length is determined by the wavelength of the electromagnetic wave. For example, if the frequency is 2.4 GHz, the length of the antenna should be 7.5 cm. The antenna length is also determined by the type of antenna; for instance, a dipole antenna is approximately half the wavelength of the EM wave, while Yagi-Uda antennas are much longer. The antenna gain of an antenna is determined by the radiation pattern. Antenna radiation patterns are a measure of the power emitted in different directions from the antenna, and is determined by the shape, size and orientation of the antenna.The antenna impedance is also a important factor in antenna design. Impedance is the ratio of RF voltage to RF current, measured in ohms, and is used to match the antenna to its transmitter or receiver. In order to achieve optimal transfer of energy, an antenna must be impedance matched to its source.In conclusion, RF antennas are a crucial part of any wireless system, and are a complex technology in their own right. There are several parameters and aspects to consider when designing the antenna, such as size, shape, orientation, radiation pattern, and gain. While the principles that govern their working are relatively simple, understanding and applying these principles correctly is crucial for successfully designing a suitable antenna for any application.

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