Interference of temperature on GPS antenna resonant frequency The device under test is a PCB of size of 40 mm x 20 mm, again with a GNSS antenna for a small tracking device. Small mobile GSM / GPS trackers are common for pets, humans or assets. Chip antennas operate as loop antennas which are magnetic […]
Q: I came across a blog of yours some years back. By chance are you still offering assistance with GPS related antenna solutions? If so, we are trying to find a replacement for a Sarantel helical antenna. We need to match or improve upon the performance of the Sarantel product. We are looking into Maxtena’s […]
New GSM / GPS / Bluetooth module adapter for STM32 Nucleo, Arduino, Intel Galileo plus compatible PCBs Your ideas? Your wishes? Your recommendation? Your advice? I will listen to you. Before I started to write the IoT / M2M Cookbook I asked business friends what they would like to pay for such a book. A […]
The device under test is a PCB of size of 40 mm x 20 mm with GNSS antenna for a small tracking device again. The first DUT in this series of test is listed here. Small mobile GSM / GPS trackers are common for pets, humans or assets. Chip antennas operate as loop antennas which […]
Before the year comes to an end there is a need for a birthday cake on my desk. This is because I have been working in GSM and GPS for 20 years. What has happened in those 20 years? GPS GPS have modules achieved lower and lower power consumption. Today we are at 5 mA […]
Wrong desigend GSM GPS Tracker The two yellow bars on the screen of the vector network analysers mark the – 6 dB return loss target for GSM 900 and GSM 1800. In the lower GSM 900 band the antenna is far away from the -6 dB. The GSM antenna is not an antenna. It is […]
Technical features of the HL6528 Network Technology: GPRS, GSM GNSS: Optional GPS/Glonass with HL6528-G Frequency Bands: 850/900/1800/1900 MHz Carrier Certifications: Orange, Telefonica, Vodafone Regulatory Certifications: R&TTE, CE, GCF-CC, FCC, PTCRB, RoHS Compliant Operating temperature: -40°C to +85°C Form factor: Solder-down / SMT Mounting The HL6528 development kit includes: 1 AirPrime HL6528 module on socket boards […]
2G, 3G and 4G plus GNSS in same shape The new Sierra Wireless HL6528-G is a real amazing piece of wireless technology. I am close to 20 years in GSM and GPS. In the old times we were happy get a GSM module without GPS in a shape of a cigarette box. Such an old […]
The GE910-GNSS combines GSM/GPRS plus GNSS (GPS and GLONASS) in one enclosure. This saves space on PCB and lowers the bill of material. QUAD-BAND GSM 850/900 1800/1900 MHz GNSS (GPS and Glonass) Embedded TCP/IP, FTP, SMTP 28.2 x 28.2 x 2.6 mm 10 I/O ports max. 2 UART, USB2.0, I2C Analog/Digital Audio Remote AT commands […]
Indoor positioning without GPS / GNSS has its benefits. Its helps to get a position, where no GPS / GNSS signal can be received. It also can be used as a backbone for GPS / GNSS. Nevertheless it can be cheaper. Indoor Positioning Alliance In-Location In August 2012 the Indoor Positioning Alliance was founded. It […]