The wife of a prominent Iranian journalist says an appeals court has upheld his conviction on a charge of spreading propaganda against the ruling Islamic establishment.

The court also confirmed Ahmad Zeidabadi's sentence of six years in prison, five years of internal exile in a remote desert town and a lifelong ban on political activity.

The journalist and former student leader was among more than 100 political figures and activists tried together in the aftermath of Iran's disputed June election.

His wife, Mahdieh Mohammadi, says her husband's lawyer informed her of the appeals court's ruling on Sunday.

The mass trial and a crackdown on street demonstrations has failed to silence Iran's opposition movement.