bladeRF 2.0 Expansion Connector (U74) Usage

Discussions related to schematic capture, PCB layout, signal integrity, and RF development

Moderator: robert.ghilduta

Post Reply
rbschum
Posts: 4
Joined: Thu May 13, 2021 10:56 am

bladeRF 2.0 Expansion Connector (U74) Usage

Post by rbschum »

I'm working on a project where we'd like to use two bladeRF micros as a 4x4 MIMO. There is a limited J51 connector where two pins are available to interconnect the boards but I'd like to have more interconnects available such as connecting the two boards using the U74 expansion connector. The Samtec mating connector is a surface mount so a daughter board or a flex-circuit would be required. Has anyone used the expansion connector for this purpose? Is there anything out there available or would we have to create a custom solution? What was the original intent for using the expansion connector? Any insights or solutions would be much appreciated.
--
-- Bob S.
rbschum
Posts: 4
Joined: Thu May 13, 2021 10:56 am

Re: bladeRF 2.0 Expansion Connector (U74) Usage

Post by rbschum »

I found a solution that allows access to the expansion connector I/O for lab work and testing. Zebax Technologies has BTH Series Samtec breakout adapters that will mate with the U74 connector and gives access to all of the pins.

https://www.zebax.com/index_files/page876.htm
BTH Series Samtec breakout adapter 0.5mm pitch
2 rows x 30 pin per row Samtec test board— 4 Layers PCB design module + GND test point
Mates with any height and form-factor Samtec BSH030 Basic Blade & Beam Hi-Speed connectors

ZX131-BTH030 Breakout Adapter fully extended, height 1.9"(50mm)
https://www.zebax.com/doc/ZX1/ZX131BTH.pdf

ZX131BTH-RK Breakout Adapter - Low profile, in-system rackmount applications, height 0.98"(25mm)
https://www.zebax.com/doc/ZX1/ZX131BTH-RK.pdf
--
-- Bob S.
Post Reply