LEA-6 / NEO-6 / MAX-6 - Hardware Integration Manual
UBX-14054794 Production Information Product handling
Page 62 of 85
Measures against in-band jamming include:
Maintaining a good grounding concept in the design
Shielding
Layout optimization
Filtering
Placement of the GPS antenna
Adding a CDMA, GSM, WCDMA bandpass filter before handset antenna
3.3.8.4 Out-band jamming
Out-band jamming is caused by signal frequencies that are different from the GPS carrier (see Figure 61). The main
sources are wireless communication systems such as GSM, CDMA, WCDMA, WiFi, BT, etc.
Figure 61: Out-band jamming signals
Measures against out-band jamming include maintaining a good grounding concept in the design and adding a
SAW or bandpass ceramic filter (as recommend in Section 3.3.6) into the antenna input line to the GPS receiver
(see Figure 62).
Figure 62: Measures against in-band jamming
3.3.8.5 GPS and GSM solution with integrated SMT antennas and chip SIM
An example is available on our C16 telematics reference design [12], that combines LEON-G200 GSM/GPRS
modem module with NEO-6Q GPS receiver module.
To Next Page
Loading...
Need help?
General
