Gallery of helical, patch, chip antennas
Pictures will tell more than thousand words.
GPS antenna helical SMT
This inexpensive helical GPS antenna will be mounted direct on PCB.
Quadrifilar GPS antenna
This Quadrifilar GPS antenna will be mounted on PCB as well. Inside the Quadrifilar GPS antenna is a balun. The GPS antenna is operating differential. Differential operating makes GPS antennas independent on ground plane. Quadrifilar GPS antenna are interfering less with human body.
GPS chip antenna
GPS chip antennas can give you the same sensitivity like a 18x18x4 mm GPS patch antenna. The only drawback is the missing right hand polarisation. A 18x18x4 mm without linear polarisation gives you a loss of 3 dB. The missing circular polarisation will give the drawback of receiving of reflected signals. By refection normally the polarisation turns from right hand to left hand. Left hand polarised signal will be attenuated high by right hand polarisedÂ GPS antennas. The listed GPS chip antenna is symbolic for different other.
GPS patch antenna
The evaluation kits contains 10 different GPS patch antennas in same size but tuned in 2 MHz intervals. GPS patch antennas are shifting its centre frequency by changing the size of the PCB, the type of plastic of the enclosure and the distance to the enclosure. After designing the customised PCB, the developer can select by try and error the GPS antenna with the right frequency shift.
Helical GPS antenna
The helical GPS antenna is supporting GPS and Glonass. It fits perfect to the combined GPS/Glonass module here:
The helical antenna is operating differential too. It is offers less interference to human body.That makes it perfect for personal GPS , Glonass or combined GPS/Glonass trackers of soldiers, police officers or fire-workers.
Do you have further questions and would like to start the development of your own tracking device right now? We will be glad to share our more than 15 years in GSM and GPS plus 25 years in radio communication with you. Just send an e-mail by using the form here or by e-mail to harald.naumann (at) gsm-modem.de .