B82453C0203A000 RF/IF and RFID

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RFID Antennas

RFID antennas are used to capture and redirect radio waves from the radio-frequency identification (RFID) system to power the RFID reader and tag. The B82453C0203A000 is a linear polarized antenna designed for UHF RFID applications, operating at a frequency range of 865-867 MHz. The antenna is composed of a radiating element and a matching network, which is comprised of a balun, an inductor, and a capacitor. The balun provides a low resistance path between the antenna and the RFID reader or tag by converting the balanced current of the transmitter to an unbalanced current accepted by the reader or tag.

B82453C0203A000 Application Field and Working Principle

The B82453C0203A000 antenna is designed to be used in UHF RFID applications. It is a linear polarization antenna with a gain of 4dBi, and is suitable for reading distances of up to three meters. The antenna is designed to be used in both indoor and outdoor environments and can be attached to walls or ceilings. The antenna has a vertical radiation pattern with a low-angle radiation, which helps to reduce the angle of incidence and ensure a better read of the RFID tags. The radiating element of the antenna is formed by a copper coil which is wound around a cylinder made of ferrite material.

The antenna also features a matching network, composed of a balun, an inductor, and a capacitor. The balun is used to convert the balanced current of the transmitter to an unbalanced current accepted by the reader or tag. By converting the current, the balun reduces the voltage standing wave ratio of the signal, creating less signal loss and enabling the antenna to receive a stronger signal. The inductor and capacitor are used to adjust the impedance matching between the transmitter and the antenna, which maximizes the power transfer from the transmitter to the antenna.

The B82453C0203A000 antenna also features a high-performance RF layer that prevents interference and ensures consistent read rates. This layer is designed to exclude signals from sources such as mobile phones, Wi-Fi, or other external sources. The antenna also has a low temperature coefficient, which means that it is not affected by changes in temperature or humidity and can be used in extreme weather conditions.

In summary, the B82453C0203A000 is a linear polarized antenna designed for UHF RFID applications, with a frequency range of 865-867 MHz. The antenna is composed of a radiating element and a matching network, which is composed of a balun, an inductor, and a capacitor. The antenna is suitable for both indoor and outdoor applications and can be used to read RFID tags from a distance of up to three meters. The antenna also features a high-performance RF layer to block out external signals and a low temperature coefficient, making it suitable for use in extreme weather conditions.

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