Android devices and pet trackers for life, not just for Christmas – original blog posted in Nov 2011 As Janis Joplin sang, “My friends all drive Porsches, I must make amends”. Two of my friends own an iPhone and they always buy the latest smartphones. I will “make amends” and skip buying a tablet for […]
GPS/Galileo
GPS antenna selection for a GSM / GPS tracker – DUT 4
Effect of the cut-out zone without copper under the antenna The device under test is a PCB of size 40 mm x 20 mm, again with a GNSS chip antenna designed for small tracking devices. Small mobile GSM/GPS trackers are common for pets, humans or assets. GNSS chip antennas operate as loop antennas which are […]
GPS antenna selection for a GSM / GPS tracker – DUT 3
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 […]
Helical GPS antenna versus GPS chip antenna
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 […]
IoT sandwich – GPS chip loop antenna on bacon – 2
The DUT is a GPS loop antenna planned for a small GSM / GPS tracker of an estimated 40 mm x 20 mm. The goal of this test is to detect the bandwidth of the GPS antenna and the interference of meat placed close to the final GPS tracker. Check of the ingredients of world´s […]
Low Cost GSM GPS Bluetooth module on Arduino shield
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 […]
IoT sandwich – GPS chip loop antenna on German bacon – 1
Today we tell you the ingredients you will need in order to reproduce the world’s first IoT sandwich. The sandwich is planned as a starter. We will show you how to make the main course and the dessert later. Ingredients for the IoT sandwich For the PCBs 9 different PCB shapes (3 different cut-out zones […]
GPS antenna selection for a GSM / GPS tracker – DUT 2
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 […]
GPS antenna selection for a GSM / GPS tracker
The device under test is a PCB of size of 40 mm x 20 mm with 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 antennas and are usually unaffected by being near to the […]
20 years in GSM and GPS
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 […]
.
.Posts by email
.Posts by RSS
Email to Harald
Harald@Facebook
Harald@Google+
Harald@Linkedin
Harald´s website
IoT/M2M on Twitter