Philip has a long association with the Women's game in Ireland, coaching the Leinster Women's team as far back as 1998.
He was appointed head coach of the Ireland side in 2003 and served until 2006 taking in the FIRA Women's Championship and a World Cup.
He took over again in 2010 and guided the squad to increasing success in the Women's RBS 6 Nations Championship.
Speaking about his decision to step down, Doyle said: "It was a very tough decision to make. I have worked with this group of women for a long time and it is hard to step away from that.
"We have had hard times and also some great success but this feels like the natural time to make way for new blood.
"We have worked hard to build for this World Cup and there is plenty still to do between now and when I finish up. I'm really looking forward to this final challenge."