The Runnymede Trust has identified eight components that they say define Islamophobia.
The eight components are:
1) Islam is seen as a monolithic bloc, static and unresponsive to change.
2) Islam is seen as separate and 'other'. It does not have values in common with other cultures, is not affected by them and does not influence them.
3) Islam is seen as inferior to the West. It is seen as barbaric, irrational, primitive and sexist.
4) Islam is seen as violent, aggressive, threatening, supportive of terrorism and engaged in a 'clash of civilisations'.
5) Islam is seen as a political ideology and is used for political or military advantage.
6) Criticisms made of the West by Islam are rejected out of hand.
7) Hostility towards Islam is used to justify discriminatory practices towards Muslims and exclusion of Muslims from mainstream society.
8) Anti-Muslim hostility is seen as natural or normal.
For a summary of the 1997 report, see here
For the follow-up report from 2004, 'Islamophobia: Issues, Challenges, and Action', see here