GPS Module with embedded GPS patch antenna

GPS module characteristics

This combined  GPS antenna module has high sensitivity, low power and tiny form factor. This GPS module has SiRF Star III inside and can provide you superior sensitivity and performance even in urban canyon and dense foliage environment. The integrated GPS patch antenna makes the GPS module easy and the best choice to integrate into portable device like mobile phone, PDAs, camera and ultra small people trackers. Based on its integrated antenna you save space on PCB and interference with GSM/UMTS antenna. The SMT mounting on PCB saves costs for connectors and manual work.

This GPS module offers the advantages as below

• Dimensions (mm): 14 x 14 x 2.5 (GPS module including embedded GPS patch antenna)
• SiRF Star III GSC3LT(f)
• 20 parallel channels
• UART and SPI communication
• Fast TTFF at low signal level
• Capable of SBAS (WAAS, EGNOS, MSAS)
• Integrated 15 mm x 15 mm GPS patch antenna
• Built-in LNA and SAW filter optimised against GSM bursts
• Wide input voltage 3,25 - 5.5 V
• Low power consumption: Tracking 75 mW only including active GPS antenna
• SMD type with stamp hole

Ultra small size designed for tiny applications

Ultra small tracking devices (people, animals, assets), PDA, digital camera, mobile phones, GSM / GPS watch

Block diagram of GPS module with embedded GPS patch antenna

Based on the embedded SAW filters you get a high protection against the GSM bursts. The GPS module will not interfere with the 2 Watt power level of GSM.

GPS module features

• Frequency L1 1575.42 MHz, C/A code
• Channels 20
• Update rate 1 Hz
• Sensitivity
• Acquisition -157 dBm (Deep Indoor)
• Tracking -159 dBm (Deep Indoor)
• Cold Start -142 dBm
• Acquisition Time
• Hot Start < 1s -130 dBm (Outdoor)
• Warm Start < 35s -130 dBm (Outdoor)
• Cold Start < 40s -130 dBm (Outdoor)
• Signal Reacquisition < 1s -130 dBm (Outdoor)
• Position Accuracy
• (2D RMS) < 5 m -130 dBm (Outdoor)
• (2D RMS) <4 m -130 dBm (Outdoor), SBAS
• Max. Altitude < 60,000 ft
• Max. Velocity < 1,000 knots
• Protocol Support
• NMEA 0183 ver 3.0 9600 bps, 8 data bits, no parity, 1 stop bits (default) 1Hz: GGA, GLL, GSA, GSV, RMC, VTG
• SiRF Binary 38400 bps, 8 data bits, no parity, 1 stop bits
• Power Consumption
• Acquisition 100 mW
• Tracking 75 mW
• Hibernate 100 μW
• Industrial operating temperature range: -40^o to 85^o C

Interfaces

• Power supply nominal 3.3 Volt, wide range  3.25 - 5.5 Volt
• One RS232 on CMOS 1.8V/2.5V/3.3V compatible without flow control (RX, TX)
• SPI bus 1.8 Volt (SDI, SDO, nSE, SCK)
• 50 Ohm antenna
• Backup battery

GPS module 3D dimensions