  Individual nitrogen vacancy (NV) color centers in diamond are versatile,
spin-based quantum sensors. Coherently controlling the spin of NV centers using
microwaves in a typical frequency range between 2.5 and 3.5 GHz is necessary
for sensing applications. In this work, we present a stripline-based, planar,
{\Omega}-shaped microwave antenna that enables to reliably manipulate NV spins.
We find an optimal antenna design using finite integral simulations. We
fabricate our antennas on low-cost, transparent glass substrate. We demonstrate
highly uniform microwave fields in areas of roughly 400 x 400 {\mu}m^2 while
realizing high Rabi frequencies of up to 10 MHz in an ensemble of NV centers.
