SPECIFICATION Part No. : ILA.08 Description : 868MHz Embedded Ceramic Loop Antenna for ISM/Lora/LPWAN/Sigfox Features : 5.0mm *3.0mm * 0.5mm High Efficiency Omni-Directional Low profile Tiny Size Surface-Mount RoHS compliant DSP-15-8- SPE-16-08-050/A/WY Page 1 of 19 1. Introduction The ILA.08 is a new 868 MHz ISM band embedded ceramic loop antenna from Taoglas featuring a good efficiency of 45% at the center of the band. It is the perfect solution for the growing amount of devices using the 868Mhz band, such as Sigfox or LoRa applications in Europe, or in metering applications. This antenna works the best when placed at the center of the board edge. The ILA.08 antenna, at 5 x 3 x 0.5 mm, is low profile and would be suitable for devices with space constraints. The ILA.08 is delivered on tape and reel and now allows M2M customers to use an omni-directional SMT antenna. The omni-directional radiation characteristics allow for excellent performance regardless of device orientation. This is especially useful for devices that are not fixed in one particular spot during use. When there is little PCB space available for antenna placement, but high performance is required, the ILA.08 is the ideal choice. The antenna is manufactured in a TS16949 first tier automotive approved facility and has passed the most stringent reliability testing. Since it is SMD, it is much easier to integrate and more reliable in high volume production compared to helical antennas which are cumbersome to install and subject to variability due to need for manual assembly. Typical Applications: - Sigfox - Lora - LPWAN - Automated Meter Reading (AMR) - RFID - Remote Monitoring - Healthcare - Sensing - Alarm Systems - Handheld Devices DSP-15-8- SPE-16-08-050/A/WY Page 2 of 19 2. Specification Electrical Characteristics* Frequency (MHz) 863 868 870 Peak Gain (dBi) -0.91 -0.51 -0.72 Efficiency (%) 42.57 46.47 44.57 Return Loss (dB) <-10 <-10 <-10 Impedance (Ω) 50 Polarization Linear Input Power 10W MECHANICAL Dimensions (mm) 5.0 x 3.0 x 0.5 Ground plane (mm) 80 x 40 (Standard Evaluation Board) Weight (g) 0.02 ENVIRONMENTAL Operating Temperature -40°C to 85°C Storage Temperature -25°C to 85°C Relative Humidity 20% to 70% *Tested on 80mm*40mm evaluation board. DSP-15-8- SPE-16-08-050/A/WY Page 3 of 19 3. Antenna Characteristics 3.1 Return Loss 3.2 Efficiency DSP-15-8- SPE-16-08-050/A/WY Page 4 of 19 3.3 Average Gain 3.4 Peak Gain DSP-15-8- SPE-16-08-050/A/WY Page 5 of 19 4. Antenna Radiation Pattern Y X Z 4.1 2D Radiation Pattern XY-Plane X Y DSP-15-8- SPE-16-08-050/A/WY Page 6 of 19 XZ-Plane Z X YZ-Plane Z Y DSP-15-8- SPE-16-08-050/A/WY Page 7 of 19 4.2 3D Radiation Pattern l ISM 868MHz DSP-15-8- SPE-16-08-050/A/WY Page 8 of 19 5. Mechanical Drawing (Unit: mm) 5.1 ILA.08 DSP-15-8- SPE-16-08-050/A/WY Page 9 of 19 5.2 ILAD.08 DSP-15-8- SPE-16-08-050/A/WY Page 10 of 19 6. Layout Guide 6.1 Footprint DSP-15-8- SPE-16-08-050/A/WY Page 11 of 19 DSP-15-8- SPE-16-08-050/A/WY Page 12 of 19 DSP-15-8- SPE-16-08-050/A/WY Page 13 of 19 * Footprint drawings in .dwg format will be provided upon request. DSP-15-8- SPE-16-08-050/A/WY Page 14 of 19 6.2 Matching Circuit Like all antennas, surrounding components, enclosures, and changes to the GND plane dimensions can alter performance. A pi-matching network like the one shown below is required in case adjustments need to be made. The antenna EVB has the same matching network. The components on the EVB are a good starting point for a new design, but will need to be adjusted upon integration for best performance. The zero ohm resistor is needed for the ability to solder down a coax pigtail to make measurements with a vector network analyzer. DSP-15-8- SPE-16-08-050/A/WY Page 15 of 19 7. Solder Reflow Profile Typical Soldering Profile for Lead-free Process: DSP-15-8- SPE-16-08-050/A/WY Page 16 of 19 8. Packaging DSP-15-8- SPE-16-08-050/A/WY Page 17 of 19 Taoglas makes no warranties based on the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Taoglas reserves all rights to this document and the information contained herein. Reproduction, use or disclosure to third parties without express permission is strictly prohibited. Copyright © Taoglas Ltd DSP-15-8- SPE-16-08-050/A/WY Page 18 of 19 DSP-15-8- SPE-16-08-050/A/WY Page 19 of 19