I am trying to generate a very compact antenna for use with DA14531 with 1mm FR4 PCB.
In your application note:
AN-B-027: Designing Printed Antennas for Bluetooth Smart 22/02/2017 2.2
there is a ZOR antenna drawing on page 20 for 1.0mm PCB.
I have downloaded the DXF file for this antenna (ant_zor.dxf) from:
AN-B-027: Designing Printed Antennas: DXF files 04/04/2017 1.0
However, the DXF image does not match the pdf image in the document! What is the correct antenna layout I should use?
The DXF shows 4 disconnected areas on the bottom layer whilst the pdf document shows them as connected.
Also, is the antenna structure connected to GND at all or is it only connected to the RF output of the DA14531 (via matching and filtering components)?
Thanks in advance for your advice/clarification.