Quartz is used to produce inexpensive electronic components whose precision are very important to a variety of industries.
In many applications it is necessary to generate a frequency. The precise generation a frequency allow radios to transmit and receive signals that will not interfere with other radios in the area. The ability to produce a very precise frequency allows the available bandwidth to be utilized efficiently. Transmission frequencies are regulated by the Federal Communications Commission (FCC) in the United States and similar bodies in other countries. A circuit called an oscillator is used to generate a signal of a particular frequency in most cellular telephones, wireless devices, pagers and two way radios. A quartz crystal resonator is used in the oscillator to generate a precise frequency.
A quartz device can also be used as a frequency selection device in the manufacture of an electronic filter. Filters are used in radios to select the desired signal and to reject signals next to the desired signal. The quartz filter allows the radio to reject strong, near by signals while accepting very weak on channel signals. The ability to build precise filters allows more radio channels to be squeezed into a given band of radio spectrum and thus provides a very efficient use of the available spectrum.
Copyright © 2001 thru 2013 by Theodore Lind