Crystals, oscillators, and resonators are electronic components that are used to generate precise frequencies and timing signals. These components are commonly used in electronic devices to provide a reference frequency for the operation of the device, such as in clocks, radio transmitters, and microcontrollers.
SAW oscillators, or Surface Acoustic Wave oscillators, are a type of oscillator that uses a piezoelectric crystal as the resonant element. SAW oscillators are commonly used in radio frequency (RF) applications, such as in wireless communication devices and RFID systems. SAW oscillators are highly stable and accurate, and can operate over a wide range of frequencies. They are also relatively small and inexpensive, making them a popular choice for many RF applications.