truck tracking webfleet solutions

Home > NEWS > Other information > truck tracking webfleet solutions

Company News

Industry News

The following aspects mainly affect the performance of GPS antenna

source:truck tracking webfleet solutions release time:2022-11-12 Hits:     Popular:realtime gps tracker online

  TK100 (GT06) Vehicle Tracker

  1. Ceramic chip: the quality of ceramic powder and sintering process directly affect its performance. The ceramic chips currently used in the market are mainly 25 × 25、18 × 18、15 × 15、12 × 12。 The larger the area of ceramic sheet, the larger the dielectric constant, the higher the resonance frequency, and the better the acceptance effect. Most of the ceramic chips are square in design to ensure that the resonance in the XY direction is basically consistent, so as to achieve the effect of uniform star collection.

  2. Silver layer: The silver layer on the surface of ceramic antenna can affect the resonant frequency of antenna. The ideal frequency point of GPS ceramic chip is accurate at 1575.42MHz, but the antenna frequency point is very vulnerable to the surrounding environment. Especially when it is assembled in the whole machine, the frequency point must be adjusted to maintain 1575.42MHz again by adjusting the shape of the silver coating. Therefore, when purchasing antenna, the manufacturer of GPS complete machine must cooperate with the antenna manufacturer to provide complete machine samples for testing.

  3. Feed point: the ceramic antenna collects the resonance signal through the feed point and sends it to the rear end. Because of antenna impedance matching, the feed point is generally not in the center of the antenna, but slightly adjusted in the XY direction. This impedance matching method is simple and does not increase the cost. Moving only in the single axis direction is called monopolarized antenna, and moving in both axes is called bipolarized antenna.

  4. Amplification circuit: shape and area of PCB carrying ceramic antenna. Because GPS has the characteristic of touchdown rebound, when the background is 7cm × When the ground is 7cm, the patch antenna can play its best role. Although restricted by such factors as appearance and structure, try to maintain a considerable area and uniform shape. The gain of the amplifier circuit must be selected in conjunction with the rear LNA gain. The GSC3F of Sirf requires that the total gain before signal input shall not exceed 29dB, otherwise signal over saturation will cause self excitation.

  The GPS antenna has four important parameters: Gain, VSWR, Noise figure, and Axial ratio. The axle ratio is especially emphasized, which is an important indicator to measure the signal gain difference of the whole machine in different directions. Since satellites are randomly distributed in the hemisphere sky, it is very important to ensure that the antenna has similar sensitivity in all directions. The axial ratio is affected by antenna performance, external structure, internal circuit of the whole machine and EMI.


Read recommendations:

gps vehicle tracker custom

gps vehicle tracker sales

G900LM-4G Car Mini GPS Tracker

There are problems that occur on the four hardware of GPS.obd2 gps tracker verizon distributors

GPS application field.gps tracker für auto price

Last article:Classification of GPS antenna

Next article:The following aspects mainly affect the performance of GPS antenna

Related Information

simple gps tracking manufacturer

2023-04-23

Pet GPS Tracker

2023-04-11

GPS Tracker wholesaler

2023-04-11

GPS Tracking price

2023-04-11

car gps tracker distributors

2023-04-23

4G GPS Tracker company

2023-04-23

fleet gps tracking manufacturer

2023-04-23

4G GPS Tracker for vehicles maker

2023-04-23

pet gps tracker cat manufacture

2023-03-16

pet gps tracker cat wholesale

2023-03-16

G06L

2022-06-21

TK08AL- RFID Car GPS Tracker

2023-10-07

G900LM-4G Car GPS Tracker

2025-03-25

G200(L) -Magnet GPS Tracker

2022-06-20

P60L Personal gps tracker

2022-06-21

Compared with traditional batteries, what are the advantages of 26650 lithium batteries?

2022-10-18

Car GPS system

2023-02-09

ODM GPS Solution for Smart Wheelchair Project Launched!

2022-06-18

GPS trackers can be used however you want

2022-09-20

Why do the antennas need to be facing up when installing a GPS tracker?

2022-09-08

Design of GPS Vehicle Satellite Positioning Simulation System

2022-08-24

GPS module accuracy.gps vehicle tracker Solution

2023-07-11

How to implement GPS monitoring function.trailer gps tracker Solution

2023-07-10

Do you know the working principle of the pet GPS positioner?realtime gps tracker online wholesaler

2023-03-10

GPS development in the United States

2022-11-24

What is the accuracy error range of vehicle gps locator?van tracker webfleet solutions

2023-03-23

The relationship between GPS and Beidou navigation?Asset tracking wholesaler

2023-02-18

About GPS receiver

2022-12-05

The obvious advantages and characteristics of GPS products

2023-02-01

Origin of GPS development

2022-12-29