External Navigation Receiver Gps Antenna

External Navigation Receiver Gps Antenna

8 month ago

28 0

Yetnorson Antenna Co., Ltd.

 8 year year

Product details

The performance of GPS Antenna/GSM Antenna is mainly affected by the following aspects:
Ceramic slice
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 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.
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.
GSM/GPRS 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.
Product Specification:

Frequency Range (MHz): 170-240/470-862 MHz, versatile coverage for multiple bands.

Input Impedance (Ohm): 75, optimized for minimal signal loss.

Gain (dBi): 30, high gain for superior signal reception.

Consumption Electric (MA): 20, low power consumption for efficient operation.

Supply Voltage (V): 5, standard voltage requirement.

V.S.W.R: ≤1.5, ensures stable and efficient signal transmission.

Antenna Length (mm): 330*230, compact dimensions for easy installation.

Antenna Width (mm): 300*200, slim design for versatile mounting options.

Cable (mm): 3000 or as customer's requirements, flexible length to suit your needs.

Connector Type: F or IEC, versatile connections to suit various devices.

Mounting: Paste, easy and secure installation method.

Gross Weight (g): 30, lightweight for portability and convenience.

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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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