A plasma generator ignites and sustains a uniform and linear plasma near atmospheric pressure. The plasma generator is composed of two power supplies, a power divider, an array of transmission line tapers and an ignition resonator. One microwave power supply is used to drive the taper array and the other power supply drives the ignition resonator. The power divider splits the taper array power evenly and delivers it to each taper. A plasma is ignited by the ignition resonator and then the plasma propagates to the taper array. The taper array does not start a plasma by itself and the ignition resonator is provided to do so. Increasing the number of tapers increases the length of the plasma.