Bluetooth® AoA RTLS systems consist of tags and locators, which work together to provide accurate location data. Tags transmit data packages containing a constant tone excitation (CTE) signal. The locators, equipped with array antennas, measure the relative phase differences of these signals to estimate direction. However, stronger reflected signals can sometimes mislead the locators, reducing location accuracy in complex environments.
CoreHW specializes in advanced RTLS tags and locators, equipped with patented antenna technology that ensures exceptional accuracy, even in challenging multipath environments such as near obstacles or walls.
Tag antenna design must consider the intended use cases of the tags, such as asset tracking, personnel tracking, and other applications. Each scenario can have distinct requirements for antenna design. Factors like the antenna pattern and immunity to surrounding materials (e.g., metal or human body tissue) are crucial in determining the link budget for the signal from the tag to the locators. CoreHW can design tag antennas tailored to various use cases, minimizing the need for multiple product variation.
In applications where PCB space is limited due to numerous components and functionalities, chip antennas may be the best solution. With fewer space constraints, we can assist in designing standard monopoles, inverted-L antennas (ILAs), or inverted-F antennas (IFAs) for small tag products. Small antennas, in particular, need to be designed with careful consideration of the enclosure and the expected operational environment. CoreHW employs an iterative design process that integrates electrical, mechanical, industrial, and regulatory requirements from the very beginning.
