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

  G05N 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:

fleet gps tracking company

Pet GPS Tracker sales

G900LS-4G Car GPS Tracker

Key Points for GPS Purchase.gps tracker no monthly fee wholesale

Several principles for car navigation purchase.plug & play Obd gps tracker supplier

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

Next article:Problems related to the use and operation of GPS.mileage tracking webfleet solutions

Related Information

4G GPS Tracker for vehicles custom

2023-04-23

gps tracker for trailer

2023-03-16

Dog gps tracker Processing

2023-04-23

Pet GPS Tracker price

2023-04-11

Dog gps tracker Processing

2023-04-23

4G GPS Tracker for vehicles sales

2023-04-23

Car gps tracking Production

2023-04-23

GPS Trackers sales

2023-04-11

pet gps tracker cat sales

2023-03-16

4G GPS Tracker for vehicles distributors

2023-04-23

TK100B- Accurate Pro version GT06/TK100

2023-10-06

10000mAh Magnetic Asset GPS Tracker

2025-04-08

TK08AL- RFID Car GPS Tracker

2023-10-07

G09L -6 inch Tail light tracker

2022-06-20

GF70L-Solar Magnetic Asset GPS Tracker

2023-10-07

Da GPS tells how to prevent car theft

2022-08-25

What positioning is the GPS positioner?

2023-02-17

Cold start, warm start and hot start of gps

2023-02-01

GPS helps you avoid the electronic eye

2023-02-02

Overview of GPS Vehicle Positioning System

2022-07-12

Introduction to GPS World

2022-10-25

What are the key points for purchasing in car GPS.personal gps tracker Solution

2023-06-16

Multiple factors affecting the popularity of mobile GPS.realtime gps tracker online Factory

2023-08-03

Calibration method for Beidou/GPS fuel sensor of large trucks.gps vehicle tracker

2023-09-18

Installation method for automotive GPS locator equipment

2023-09-13

GPS establishes network connection

2022-10-19

How to apply GPS positioner to view the location of the electric vehicle

2023-03-06

Handheld GPS navigation products will enter a period of rapid development.pet gps tracker cat wholes

2023-05-27

The manufacturer introduced in detail what applications of GPS in aviation flight navigation.gps tra

2023-04-25

The obvious advantages and characteristics of GPS products

2023-02-01