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Antenna ground plane

The datasheet for LTE antenna SR4L034-R states a 150mm Ground plane required for 617MHz band. I currently have a PCB ~90x70mm (LxW) with a 2nd PCB, ~40 x 70mm (LxW), connected via a board to board connector. Is it feasible to have these 2 boards as a Flex rigid with the GND plane from PCB1 extended to PCB2 by the FPC, ~30mm, to meet the 150mm requirement?


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2 Answers

answered by
Hi Steven,

SR4L034 does not support band 71, the low frequency cut-off is 698MHz. If you require band 71, we do have suitable antennas. Typically you will get an increase in performance with a good ground connection between two PCBAs as you suggest, however relative position, mechanical parts and enclosure positions should not interfere with antenna clearance areas.

Many Thanks

answered by
Thanks Steve,
Band 71 is not required, the 617MHz was the the example used to provide the length of the GND plane. Ill run some tests with a couple of PCBAs connected as i dont think a flex rigid PCB will be suitable price wise.

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