The Serial and LVDS repeaters for the ATLAS New Small Wheel sTGC trigger

Serial and LVDS repeaters boards will be used in the electronics chain from the NSW sTGC Pad Front End boards - pFEBs - to the Pad Trigger, from the Pad Trigger to the strips FE boards - sFEBs - and from there to the Router boards. In this Note we provide the justification for using the repeater boards, the design and the performance of the pre-production boards for the 4.8Gb/s Serial and the 640Mb/s LVDS Repeaters during their tests at the NSW Vertical Slice Lab and the on wedge tests. The Commissioning and integration of the repeater boards is given at the end of the document