define rf frequency
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radio frequency (RF, rf) Radio frequency (RF) is a measurement representing the oscillation rate of electromagnetic radiation spectrum, or electromagnetic radio waves, from frequencies ranging from 300 GHz to as low as 9 kHz. With the use of antennas and transmitters, an RF field can be used for various types of wireless broadcasting and communications.
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- : any of the electromagnetic wave frequencies that lie in a range extending from below 3 kilohertz to about 300 gigahertz and that include the frequencies used in radio and television transmission.
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What is RF Testing? RF Testing Definition/Description: RF is short for radio frequency. RF is any frequency within the electromagnetic spectrum associated with radio wave propagation. When an RF current is supplied to an antenna, an electromagnetic field is created that then is able to propagate through space. Many wireless technologies are based on RF field propagation.
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What is RF Testing? The RF part of the electromagnetic spectrum is generally defined as that part of the spectrum where electromagnetic waves have frequencies in the range of about 3 kilohertz (3 kHz) to 300 gigahertz (300 GHz).Probably the most important use for RF energy is in providing telecommunications services.or example, the unit volts per meter (V/m) is used to measure the strength of the electric field and the unit amperes per meter (A/m) is used to express the strength of the magnetic field. RF waves can be characterized by a wavelength and a frequency.
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Marconi Gets Mars' Message Occupational Safety and Health Administration. Radiofrequency and Microwave Radiation. Radiofrequency (RF) and microwave (MW) radiation are electromagnetic radiation in the frequency ranges 3 kilohertz (kHz) - 300 Megahertz (MHz), and 300 MHz - 300 gigahertz (GHz), respectively.
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What is customs value and how do you determine it? Answer Wiki. Oh man....every time I talk about customs value I think back to years ago when, as a young, freshly minted MBA living the expat life in China, I found myself and my company on the wrong side of a customs investigation.
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- Define low frequency. low frequency synonyms, low frequency pronunciation, low frequency translation, English dictionary definition of low frequency. n. Abbr. LF A radio frequency in the range from 30 to 300 kilohertz. n 1. a radio-frequency band or a frequency lying between 300 and 30 kilohertz.
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Encyclopedia (R adio F requency remote control) A handheld, wireless device used to operate audio, video and other electronic equipment using radio frequency (RF) transmission. Unlike the more common infrared (IR) remotes, RF remotes do not require line of sight and do not have to be aimed at the equipment.
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First Name Meaning of: Thach Your name of Thach has formed an independent, positive, and determined personality. You are not easily influenced by the opinions of others, who may accuse you of being stubborn. Once you have made a decision, you put forth great effort to accomplish your goals regardless of obstacles.
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Radio frequency Although radio frequency is a rate of oscillation, the term radio frequency or its abbreviation RF are used as a synonym for radio – i.e., to describe the use of wireless communication, as opposed to communication via electric wires.Examples include:1  Radio-frequency identification.lthough radio frequency is a rate of oscillation, the term radio frequency or its abbreviation RF are used as a synonym for radio – i.e., to describe the use of wireless communication, as opposed to communication via electric wires. Examples include: 1  Radio-frequency identification.
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Radiofrequency (RF) Waves The Larmor frequency scales directly with main magnetic field strength (Bo), and for clinical MRI lies in the range of tens to hundreds of MHz. These frequencies are part of the electromagnetic spectrum commonly used for radio transmission. For MRI a time-varying radiofrequency (RF) field, commonly referred to as B1, must be first transmitted into the spin system near the Larmor frequency.
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RFQ RFQ is the initialism for a number of things: Radio Frequency Quadrupole, a particular setup of electrodes used as a mass analyzer or an element of a linear accelerator.
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radio frequency (RF, rf) How radio frequency works. Radio frequency is measured in units called hertz, which represent the number of cycles per second when a radio wave is transmitted. One hertz equals one cycle per second; radio waves range from thousands (kilohertz) to millions (megahertz) to billions (gigahertz) of cycles per second.
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- Radio frequency interference, RFI, is any undesirable electrical energy with content within the frequency range dedicated to radio frequency transmission. Conducted RFI is most often found in the low frequency range of several kHz to 30MHz. Radiated RFI is most often found in the frequency range from 30MHz to 10GHz.
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- What is the difference between a heat calorie and a food calorie? A heat calorie is the amount of energy it takes to heat 1 mL of water 1 degree celsius. A food calorie is 1000 heat calories. 1 food calorie is written as 1 C …
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What is RF Testing? Different forms of electromagnetic energy are categorized by their wavelengths and frequencies. The RF part of the electromagnetic spectrum is generally defined as that part of the spectrum where electromagnetic waves have frequencies in the range of about 3 kilohertz (3 kHz) to 300 gigahertz (300 GHz).
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Introduction to RF & Wireless Communications Systems What is RF? RF itself has become synonymous with wireless and high-frequency signals, describing anything from AM radio between 535 kHz and 1605 kHz to computer local area networks (LANs) at 2.4 GHz. However, RF has traditionally defined frequencies from a few kHz to roughly 1 GHz.
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- The frequency of a wave is the number of waves produced by a source each second. It is also the number of waves that pass a certain point each second. The unit of frequency is the hertz (Hz). It is common for kilohertz (kHz), megahertz (MHz) and gigahertz (GHz) to be used when waves have very high frequencies.
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Radio spectrum Part of a series on. The radio spectrum is the part of the electromagnetic spectrum from 3 Hz to 3000 GHz (3 THz). Electromagnetic waves in this frequency range, called radio waves, are extremely widely used in modern technology, particularly in telecommunication.
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Introduction to RF & Wireless Communications Systems RF itself has become synonymous with wireless and high-frequency signals, describing anything from AM radio between 535 kHz and 1605 kHz to computer local area networks (LANs) at 2.4 GHz. However, RF has traditionally defined frequencies from a few kHz to roughly 1 GHz. If one considers microwave frequencies as RF, this range extends to 300 GHz. The following two tables outline the various nomenclatures for the frequency bands. The third table outlines some of the applications at each of the various frequency bands.
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radio-frequency Medical Definition of radio frequency. : any of the electromagnetic wave frequencies that lie in a range extending from below 3 kilohertz to about 300 gigahertz and that include the frequencies used for communications signals (as for radio and television broadcasting and cell-phone transmissions) or radar signals.
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frequency frequency [frē′kwen-sē] Type:Term. Definitions 1. The number of regular recurrences in a given time, heartbeats, sound vibrations.
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Puppy feeding guidelines Puppies should be fed three to four times a day therefore if you are currently feeding ¾ a cup of puppy food twice a day you should consider spacing it out by feeding ½ cup three times a day.uppies should be fed three to four times a day therefore if you are currently feeding ¾ a cup of puppy food twice a day you should consider spacing it out by feeding ½ cup three times a day.
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- Last Updated: Radio wave, wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves. The wavelengths of radio waves range from thousands of metres to 30 cm. These correspond to frequencies as low as 3 Hz and as high as 1 gigahertz (109 Hz).
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Radio frequency Although radio frequency is a rate of oscillation, the term radio frequency or its abbreviation RF are used as a synonym for radio – i.e., to describe the use of wireless communication, as opposed to communication via electric wires.Examples include: 1  Radio-frequency identification. The energy in an RF current can radiate off a conductor into space as electromagnetic waves (radio waves); this is the basis of radio technology.
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Marconi Gets Mars' Message Radio waves and microwaves emitted by transmitting antennas are one form of electromagnetic energy. They are collectively referred to as radiofrequency or RF energy or radiation. Often the term electromagnetic field or radiofrequency field may be used to indicate the presence of electromagnetic or RF energy.