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XCAF-12L type antenna

Circular polarization, small size, easy to install

Key words:

Hongxing

Classification:

Antenna

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+86 0755-28225517

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Detailed description

The XCAF-12L antenna is mainly used in the 902~928MHz radio frequency identification system, the center frequency is 915MHz, can be directly connected to the reader through the coaxial cable, small size, easy to install, can be well matched with the coaxial cable and has a good direction.

Circular Polarization Mode of Antenna
Two spatially orthogonal linearly polarized waves of equal amplitude can be synthesized into a circularly polarized wave. The circularly polarized waves can be divided into left-handed and right-handed circularly polarized waves according to the different directions of rotation of the electric field. A right-handed polarized wave is an electromagnetic wave conforming to the right-handed rule, and a left-handed circularly polarized wave is an electromagnetic wave conforming to the left-handed rule. The polarization mode of the XCAR-12L antenna is circular polarization, so within the reading range of the antenna, the tag can be read even if it rotates at will. However, for most tags that work in a polar mode, when receiving circular polarized waves, the power that the tag can receive is lost by half. Therefore, when the reader uses a circular polar antenna, the reading and writing distance is shorter than that of a general linear polarized antenna. The XCAF-12L is a low gain antenna, and its radome material is ABS engineering plastic.

The role of the antenna
The role of the antenna is to transmit radio frequency signals between the electronic tag and the reader. The reader of the RFID system must emit energy through the antenna to form an electromagnetic field, and identify the electronic tag through the electromagnetic field. It can be said that the electromagnetic field range formed by the antenna is the readable area of the radio frequency system. Sometimes the RFID system is transmitted and received by an antenna at the same time; sometimes the RFID system is transmitted by one antenna and received by another antenna. The form and number of antennas used should depend on the specific application.

standing wave ratio curve
The standing wave ratio curve of the XCAF-12L antenna in its working frequency range is relatively flat, and the value is small, which indicates that the antenna works well at this time. When the frequency range is exceeded, the standing wave ratio value of the antenna increases sharply, and the performance of the antenna drops sharply.

directivity of antenna
The antenna has different radiation or reception capabilities in different directions in space, which is the directivity of the antenna. The maximum direction of the antenna radiation is in the normal direction perpendicular to the antenna surface, and the radiated energy is basically concentrated in this direction. On the back of the antenna, the radiated energy is very small. Once the shape and size of the antenna are set, the direction of the antenna is also set, that is, the distance of reading the tag depends entirely on the power transmitted by the reader.

◆Product parameters

physical parameters
Size: 294 x 294 x 64mm
Weight: 1.5kg
Radome material: ABS engineering plastic

Environmental parameters
Working temperature:-40 ℃ ~ 85 ℃
Relative humidity: ≤ 95%

Performance parameters
Operating frequency band: 902~928 MHz
Center frequency: 915MHz
Polarization mode: circular polarization
Standing wave ratio: ≤ 1.3
Antenna gain: 7.15dBi
Characteristic impedance: 50 Ω
Half-power beam width: E plane 70 °,H plane 70 °
Joint mode: N type

* The above parameters may change, please refer to the actual parameters, please understand the inconvenience.

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