special components (semiconductor device) use in RF systems.

ASSIGNMENT 5

special components (semiconductor device) use in RF systems

Introduction.

The radio-frequency system, or RF system, supplies power to the ALS in the form of microwaves. Microwaves are radio waves with a wavelength between about one meter and one millimeter, which are the wavelengths used for radio and television broadcasts as well as radar and microwave ovens. Most parts of the RF system supply microwave radiation with a wavelength of about 0.6 meter (see Electromagnetic Radiation for an explanation of wavelengths). Microwave power is used to energize electrons, keeping them whirling around the ALS storage ring at almost the speed of light. Eventually, the electrons release this energy as x rays and ultraviolet light. Scientists use this light, which is called synchrotron radiation, to carry out experiments at the ALS. How important is the RF system? All the energy released as synchrotron radiation originates as RF power.



basic component of an rf system

The basic components of the RF system include:
Klystrons
Waveguides
RF Cavities


OTHER COMPONENTS INCLUDES

RF DIODES

schottky diodes

PIN diode

varactor diode

IMPATT diode

Tunnel diode

TRAPATT(TRApped Avallanche and Transit Time)s diode

BARRITT(BARRier Injection Transit Time)diode

Gunn diode

RF TRANSIATORS

MISFET(Metal Insulated semiconductor

JFET

MESFET (Metal semicomductor)
Hetero fet
RF semiconductors devices are 7 major categories: Bandpass Filters; Lowpass Filters; Highpass Filters; Notch Filters; Diplexers/Duplexers; Cavities/Combiners; and Ceramics/Helicals.



PICTURE OF RF CABINNET FULLY PACKED WITH COMPONENTS

EXAMPLES OF RF FILTERS.

REFERENCE
www.eparonoma.com