DECLARE @StartDt AS  DATE;
DECLARE @EndDt AS  DATE;
DECLARE @Dt AS  DATE;
select @RDt=CASE WHEN CAST(DATEPART(DW,GETDATE()) AS INT) > 2
        THEN
        CAST(DATEADD(WK, DATEDIFF(WK,0,GETDATE()), 1) AS DATE)
        ELSE
         CONVERT(VARCHAR,DATEADD(WK,DATEDIFF(WK,6,GETDATE()),1),107) END

select @StartDt=CAST(DATEADD(WK,DATEDIFF(WK,6,@Dt),0) AS DATE)
select @EndDt=CAST(DATEADD(WK,DATEDIFF(WK,6,@Dt),6) AS DATE)