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:

mini gps tracker wholesaler

Cantrack G05

G200NY -Cow/Camel GPS Tracker

GPS trackers can be used however you want

The strategic role and commercial interests of GPS satellite positioning system

Last article:Classification of GPS antenna

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

Related Information

Pet GPS Tracker supplier

2023-03-16

gps vehicle tracker Processing

2023-04-11

fleet tracking mobile app

2023-03-16

Magnetic gps tracker distributors

2023-03-16

fleet tracking webfleet solutions

2023-03-16

OBD GPS Tracker

2023-03-16

Pet GPS Tracker custom

2023-04-11

real-time gps tracking Manufacturing

2023-04-23

car gps tracker manufacture

2023-04-23

OBD GPS Tracker Vendor

2023-03-16

TK103B

2022-06-20

G07L 4G GPS Tracker

2022-09-06

6000mAh Magnetic Asset GPS Tracker

2025-03-31

YG119- Hunting Dog GPS tracker

2023-10-07

G01 Smallest Personal Old People Mini GPS Tracker for Kids

2022-06-19

The strategic role and commercial interests of GPS satellite positioning system

2022-08-13

GPS automatic navigation.obd2 gps tracker verizon distributors

2023-05-17

What are the differences between car navigation and mobile phone navigation?gps tracker with magnet

2023-04-11

How receivers and drones leave GPS

2022-09-13

Do gps trackers consume data?

2022-09-16

Gps speed limiter.How to use mobile phones to locate and track vehicles with GPS installed

2023-10-28

What are the costs of buying GPS positioner?obd-II port gps tracker manufacturer

2023-04-06

GPS positioning manufacturers introduce the composition of satellite positioning systems.Dog gps tra

2023-06-14

There are many types of GPS satellite receivers.GPS Tracker for vehicles manufacture

2023-08-26

GPS receiving antenna

2022-09-27

GPS locator installation

2022-10-27

Current Development of GPS.GPS Tracking

2023-09-08

Recommended Minimum Specific GPS/TRANSIT Data (RMC) GPS recommended positioning information

2022-09-28

gps vehicle tracker.Automotive GPS positioning software and global positioning system satellites

2023-11-11

Modernization of GPS.OBD GPS Tracker manufacture

2023-09-08