gps active antenna-rf-product


GPS is a very useful but complex technology. In order for the GPS devices to work they need a clear view of the sky and strong signals from the satellites. But that does not always possible. There are many obstacles in the path like topography, weather etc in that particular area. The one of the solutions is to connect an external wire as antenna and receive signals. But This method may not be very helpful as signals travelling through metallic wire will be weakened due to resistance of the wire.To over come this issue the best option is to use GPS Active antenna. An active antenna is an antenna that contains active electronic components such as transistors etc. These electronic components enhance the signal, thus overcoming the affects of resistance by the wire.

23mm/sup 2/single-chip 0.18/spl mu/m CMOS GPS receiver with 28mW-4.1 mm/sup 2/radio and CPU/DSP/RAM/ROM
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Satellites tracking and position fK (with 3m rms precision) has been achieved by the SoC GPS receiver connected to a GPS active antenna in an outdoor environment . In this paper Radio RF parameters with and without base- band running are reported

Real-world interferences impacts analysis using high dynamic range GNSS RF/IF signals record and playback
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Real-World Interference Impacts Analysis using High Dynamic Range GNSS RF/IF Signals Record and Playback

Technical description of the LET spectrometer Liulin-4SN with GPS receiver
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Figure 1. External view of the Liulin-4S components. Liulin-4 Spectrometer is in the middle. Rechargeable battery package is at the top of figure. Gray box in the upper right part of the figure is the GPS active antenna . Page 2. Technical Description of Liulin-4S 2

Liulin type spectrometers: new developments
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Li-ion Rechargeable battery package is at the top of figure. Black box in right part of the figure is the GPS active antenna . These type spectrometers were specially designed for the IBERIA airlines space radiation study program

Green supplier selection models utilizing voting analytic hierarchy process
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Co. Founding year Capital (NT$ billion) Major products Listed or OTC Subject GPS patch antenna, GPS active Antenna , RF module, GPS receiver Yes Advisor Touch Phone, PDA Phone, Smartphone, Mobile Computer Yes General manager

Development of a dynamic variable measurement system for use in wind powered yachts
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A design of the low profile tri-band antenna for ECS application
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AMPS/PCS/ GPS Active Antenna for Emergency Call Systems. IEEE Antenna and Wireless Propagation Letters,

Design of Vehicle Tracking System using MCU STM32F103RET6 and SIM908
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Wireless Internet Based GPS Tracking System
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With this configuration we saw more sensitivity Figure 5 GPS Expansion Board Figure 6 GPS Active Antenna Modification Page 9 L1 (1575.42 MHz), C/A code Cold Start Time 36 s Hot Start Time 3.5 s GPS Active Antenna Model VTorch G050A Gain 26dB Voltage

IDENTIFICATION SYSTEM, TRACKING AND SUPPORT FOR VESSELS ON RIVERS
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The system has the following characteristics: size: 16.5 cm x 9.5 cm x 3.9 cm; weight: 0.38 Kg (without accessories); GPS receiver: 12 channels; GPS active antenna ; Update Rate: 1 Hz; Precision: 1-15 m; Datum: WGS-84; Power: 9-30 VDC; Current intensity less than 80mA at

Green Supplier Evaluation for 3C Industry Utilizing Data Envelopment Analysis
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Co. Founding year Capital (NT$ billion) Major products Listed or OTC Subject title A 1979 16.26 GPS patch antenna, GPS active Antenna , RF module, GPS receiver Yes Advisor B 1997 43.6 Touch Phone, PDA Phone, Smartphone, Mobile Computer Yes General manager

To develop a GPS (Global positioning system) AVL (automatic vehicle locator) tracking system
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2.14 Specification for GPS:- Receiver 16 channel, L1 1575.42 MHz Accuracy Position: 2.5 m CEP; 5.0 m SEP Position with DGPS/SBAS: 2.0 m CEP; 3.0 m SEP GPS dedicated AT commands Support of SBAS (WAAS/EGNOS) data GPS active antenna supply: 3.0V A

Antennas and Front-End in GNSS
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AMPS/PCS/ GPS active antenna for emergency call systems.

Technical description of liulin-4 type LET spectrometers (LETS)
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Picture of the large size LETS without display. Fig. 9. External view of Liulin-4S. Rechargeable battery package is at the top of figure. Gray box is the GPS active antenna .. Fig. 6. Picture of the Small size LETS with display. Fig. 5. Picture of the Small size LETS without display

Electric Vehicle Conversion Project Hardware Implementation and Data Acquisition System
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Page 1. ELECTRIC VEHICLE CONVERSION PROJECT HARDWARE IMPLEMENTATION AND DATA ACQUISITION SYSTEM TEOH JIA XIAN UNIVERSITI TUNKU ABDUL RAHMAN Page 2. ELECTRIC VEHICLE CONVERSION PROJECT HARDWARE

EROBOT: a second-generation NDE inspection robot
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