A pair of circuits that use a single 3.3-V supply rail to generate a ground- or supply-reference sawtooth waveform.

Ultrasonic imaging has become a very promising technology, and it has been widely applied in biomedicine, geology, and other fields due to its advantages of safety, nondamaging, and real time.

With recent improvement in the quality and capacity of wireless communication, multiple antennas techniques, which are used in antenna diversity systems or Multiple-Input Multiple-Output (MIMO) ...