Rf microelectronics 3rd edition. Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency [1] range from around 20 kHz to around 300 GHz. Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency [1] range from around 20 kHz to around 300 GHz. “RF” refers to the use of electromagnetic radiation for transferring information between two circuits that have no direct electrical connection. Feb 7, 2026 · The meaning of RADIO FREQUENCY is any of the electromagnetic wave frequencies that lie in the 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 and satellite transmissions) or radar signals. . Feb 25, 2021 · Radio frequency (RF, rf) measures electromagnetic radio waves, and using antennas and transmitters, it can be used for wireless broadcasting and communications. How to use radio frequency in a sentence. Oct 31, 2025 · From wireless communication to radar and circuit design, RF technology shapes the world around us. Get a high-level look at key concepts, components, and systems in this RF primer. Time-varying voltages and currents generate electromagnetic energy that propagates in the form of waves. RF stands for Radio Frequency, and an RF signal refers to an electromagnetic wave used to transmit information wirelessly. These signals typically fall within the frequency range of 3 kHz to 300 GHz. In this guide, we will explore how RF systems behave in real-world applications, the tools you need to tackle common RF problems, and practical techniques to achieve better results.