A LOFAR station (artistic reproduction).
LOFAR Science Consortium
In the Solar System, several planets have a radio emission, at wavelengths of several meters (decametric emission), and are stronger than that of the Sun. So the idea is to detect exoplanets in the decametric domain, where we are not disturbed by the parasitic emission of the star. This approach seems to be especially promising for hot Jupiters. This is one of the scientific objectives of the large decametric interferometer LOFAR, which should be operational in 2007 in Holland.
* Frei and Mayor, Les nouveaux mondes du cosmos (The new worlds of the cosmos)