GPS Antenna

4 year ago

107 0

Yetnorson Antenna Co., Ltd.

 8 year year

Product details

Ceramic slice: the quality of ceramic powder and sintering process directly affect its performance. Currently, the ceramic pieces used in the market are mainly 25×25, 18×18, 15×15 and 12×12. The larger the ceramic plate area, the larger the dielectric constant, the higher the resonance frequency, the better the reception effect. Ceramic tiles are mostly square in design to ensure that the resonance in the XY direction is basically the same, so as to achieve the effect of uniform star collection.
Silver layer: The silver layer on the surface of the ceramic GPS Antenna can affect the resonance frequency of the antenna. The ideal GPS ceramic chip frequency point accurately falls at 1575.42mhz, but the antenna frequency point is very vulnerable to the influence of the surrounding environment, especially in the assembly of the whole machine, it is necessary to adjust the shape of the silver coating to adjust the frequency point to keep at 1575.42mhz. Therefore, GPS Antenna for Car manufacturers must cooperate with antenna manufacturers when purchasing antennas, and provide samples of the whole machine for testing.
Inside Gps Antenna has four important parameters: Gain, VSWR, Noise figure and Axial ratio. The axial ratio is especially emphasized, which is an important index to measure the difference of signal gain in different directions. Since satellites are randomly distributed across the hemispherical sky, it is important to ensure that antennas have similar sensitivity in all directions. The axis ratio is affected by antenna performance, appearance structure, internal circuit and EMI.
Feed point: the ceramic Antenna For Gsm collects the resonance signal through the feed point and sends it to the back end. Because of antenna impedance matching, the feed point is generally not directly in the center of the antenna, but slightly adjusted in the XY direction. Such impedance matching method is simple and does not increase the cost. An antenna that moves only in one axis is called single-biased, and one that moves in both axes is called double-biased.
Amplifier circuit: PCB shape and area bearing ceramic antenna. Since GPS has the characteristics of rebound from ground contact, when the background is 7cm×7cm uninterrupted earth, the effectiveness of patch antenna can be brought into full play. Although restricted by external structure and other factors, but as far as possible to maintain a considerable area and uniform shape. The amplifier gain must be selected in conjunction with the backend LNA gain. Sirf's GSC3F requires that the total gain before signal input should not exceed 29dB, otherwise the signal will oversaturate and generate self-excitation.

Center Frequency (GPS): Operates at the standard 1575.42MHZ for precise and reliable GPS positioning.
V.S.W.R(GPS)≤1.8: Ensures efficient GPS signal transmission with minimal reflection, maintaining high signal quality.
Gain (GSM): Provides 3.5dBi gain for enhanced GSM signal reception and coverage.
Gain (GPS): Offers 29dB±3dB gain for powerful and stable GPS signal reception, ensuring accurate positioning.
Polarization Type(GSM): Utilizes vertical polarization for optimal GSM signal reception and penetration.
Connector Type(GSM): Comes with an SMA-Male connector, customizable to suit various integration needs.
Connector Type(GPS): Features an SMA-Male connector for seamless connection to GPS devices.
Certification: Complies with FCC/CE/ROHS/ISO standards, ensuring global market compatibility and safety.
Logo: Offers free logo printing service, allowing for personalized branding and identification.

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Yetnorson Antenna Co., Ltd.

 Audited supplier

8 year

Address: Shenzhen, China

Main Product: TV Antenna, GPS Antenna, GSM Antenna, 4G Antenna, Wifi Antenna , RF Cable

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