then you can treat it as the superposition of two lamda/quarter antennas.Perhaps you can quickly solve this Problem using the antenna module in AMANOGAWA (its free and available on the web..but does not run well on a MAC..and make sure that you have the latest version of JAVA.).You may need to intropduce a virtual groundplane under 45 deg..
It works perfectly well. The radiation pattern is no longer circularly symmetrical, because in the plane of the bend the whole antenna is not in phase, so there is a bit more gain in the direction normal to the plane the wires are in. The nulls at the poles are filled in, too.
It is still pretty much a dipole antenna. Try building one or modelling it and you will see. With two 7.5 mm arms 1/2 mm diameter it is resonant close to 10 GHz as would be expected.
It will radiate quite well. You still need a balun to drive it from a coaxial cable. Try modelling it with NEC or miniNEC. Can be downloaded free. If you do that, first do a conventional straight half wave dipole. When NEC gives you the conventional answers you are ready to model something else.