Radio frequency

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Radio frequency (RF) is a rate of oscillation in the range of about 3 kHz to 300 GHz, which corresponds to the frequency of radio waves, and the alternating currents which carry radio signals. (

Conferences related to Radio frequency

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2019 41st Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops andinvitedsessions of the latest significant findings and developments in all the major fields ofbiomedical engineering.Submitted papers will be peer reviewed. Accepted high quality paperswill be presented in oral and postersessions, will appear in the Conference Proceedings and willbe indexed in PubMed/MEDLINE & IEEE Xplore

2019 IEEE 17th International Conference on Industrial Informatics (INDIN)

Industrial information technologies

2019 IEEE 46th Photovoltaic Specialists Conference (PVSC)

Photovoltaic materials, devices, systems and related science and technology

2019 IEEE 69th Electronic Components and Technology Conference (ECTC)

premier components, packaging and technology conference

2019 IEEE Applied Power Electronics Conference and Exposition (APEC)

APEC focuses on the practical and applied aspects of the power electronics business. The conference addresses issues of immediate and long term importance to practicing power electronics engineer.

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Periodicals related to Radio frequency

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Aerospace and Electronic Systems Magazine, IEEE

The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.

Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.

Antennas and Wireless Propagation Letters, IEEE

IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.

Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.

Broadcasting, IEEE Transactions on

Broadcast technology, including devices, equipment, techniques, and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.

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Most published Xplore authors for Radio frequency

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Xplore Articles related to Radio frequency

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Emissive probe measurements of electron energy distribution function in radio-frequency plasma

[{u'author_order': 1, u'affiliation': u'Department of Electronics, Tokai University, Hiratsuka, 259-1292 Japan', u'full_name': u'Haruo Shindo'}, {u'author_order': 2, u'affiliation': u'Department of Electronics, Tokai University, Hiratsuka, 259-1292 Japan', u'full_name': u'Takayuki Ozawa'}, {u'author_order': 3, u'affiliation': u'Department of Electronics, Tokai University, Hiratsuka, 259-1292 Japan', u'full_name': u'Takayuki Fukasawa'}] IEEE Conference Record - Abstracts. 2005 IEEE International Conference on Plasma Science, 2005

Summary form only given. A new method to measure electron energy distribution function by an emissive probe has been proposed. The method is based on measurement of the functional relationship of the floating potential and the heating voltage of emissive probe. From the measured data of the floating potential change as a function of the heating voltage, the curve of ...

A Measurement System to Replace the 8580

[{u'author_order': 1, u'affiliation': u'U.S. Department of Commerce, National Telecommunications and Information Administration, Institute for Telecommunication Sciences, Boulder, Colorado 80303', u'authorUrl': u'', u'full_name': u'Robert J. Matheson', u'id': 37296445700}] 21st ARFTG Conference Digest, 1983

The Radio Spectrum Measurement System (RSMS) has been used by the U.S. Department of Commerce since 1973 for gathering frequency usage data for purposes of frequency management. The HP 8580 automatic spectrum analyzer used in this mobile system is now being replaced with a more modern system. The new system will provide measurements over the 0.01-18 GHz range with bandwidths ...


[{u'author_order': 1, u'affiliation': u'Nokia Siemens Networks', u'full_name': u'Chris Johnson'}] Radio Access Networks for UMTS: Principles and Practice, None

This chapter contains sections titled:Network ArchitectureRadio Access TechnologyStandardisation

Errata ["Measurement Techniques for RF Nanoelectronic Devices"]

[] IEEE Microwave Magazine, 2014

In "Measurement Techniques for RF Nanoelectronic Devices," by Henry Happy, et al. [1], Figure 5 on page 36 was shown incorrectly. The correct figure is shown here. We apologize for any confusion this may have caused.

The use of radio frequency systems in the marine environment

[{u'author_order': 1, u'affiliation': u'Radio Engineers, San Diego, CA, USA', u'authorUrl': u'', u'full_name': u'R. Decesari', u'id': 38223093500}] OCEANS '85 - Ocean Engineering and the Environment, 1985

Radio frequency systems have been married to the marine environment for over three-quarters of a century. Since the days of Marconi, when seagoing spark- gap transmitters, miles of antenna wire, and crystal sets were "high-tech", radio systems have provided communications, navigation, and data telemetry functions for vessels ranging in size and shape from the mightiest dreadnoughts to the latest autonomous ...

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Educational Resources on Radio frequency

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No eLearning Articles are currently tagged "Radio frequency" Videos

IMS 2014: Super High Bit Rate Radio Access Technologies for Small Cells Using Higher Frequency Bands
Radio Frequency Identification(RFID)
IMS 2011 - CREE Overview
IEEE Richard M. Emberson Award - Donald N. Heirman - 2018 IEEE Honors Ceremony
Micro-Apps 2013: Frequency Planning Synthesis for Wireless Systems Design
LiFi: Misconceptions, Conceptions and Opportunities - Harald Haas Plenary from the 2016 IEEE Photonics Conference
8-Element, 1-3GHz Direct Space-to-Information Converter - Matthew Bajor - RFIC Showcase 2018
Network Analysis: RF Boot Camp
Richard J. Thompson Jr.: Crystal Clear
A Wideband SiGe BiCMOS Transceiver Chip-Set for High-Performance Microwave Links in the 5.643.5GHz Range: RFIC Industry Showcase 2017
IMS 2012 At First Glance
22 nm FD-SOI Technology Optimized for RF/mmWave Applications - Steffen Lehmann - RFIC Showcase 2018
Q-Band CMOS Transmitter System-on-Chip - Tim Larocca - RFIC Showcase 2018
Grounding for Hybrid Vehicles
IMS 2014:Active 600GHz Frequency Multiplier-by-Six S-MMICs for Submillimeter-Wave Generation
IMS 2011 Microapps - Digital Radio Testing Using an RF Channel Replicator
Single Crystal AlGaN Bulk Acoustic Wave Resonators on Silicon Substrates with High Electromechanical Coupling: RFIC Industry Showcase
HKN Member Asad M. Madni Receives Award at 2015 EAB Awards Ceremony
Massive MIMO Active Antenna Arrays for Advanced Wireless Communications: IEEE CAS lecture by Dr. Mihai Banu
FinSAL: A Novel FinFET Based Secure Adiabatic Logic for Energy-Efficient and DPA Resistant IoT Devices - Himanshu Thapliyal: 2016 International Conference on Rebooting Computing


  • Introduction

    This chapter contains sections titled:Network ArchitectureRadio Access TechnologyStandardisation

  • Digital Signal Processing for GNSS Receivers

    This chapter mainly focuses on the signal processing algorithms used in the physical layer of a global navigation satellite system (GNSS) receiver. It provides a general introduction of all the subsystems of a GNSS receiver. The chapter describes the first operation that a receiver performs when it is switched on: the acquisition of the satellites in view and a first estimate of certain signal in space (SIS) parameters. These estimates derive from the approximation of some results from maximum likelihood (ML) theory. Such estimates are solid, but coarse, and need to be refined by other blocks, known as tracking systems or null seekers, based on different signal processing techniques. The chapter provides a description of the gradient theory and its application in the null seekers. It shows that the estimation of the pseudoranges can be obtained after the tracking outputs are converted into navigation data, that is, when each satellite channel is in navigation mode.

  • Modulation and Demodulation

    This chapter discusses common types of modulation and their variants. It explores the spectral effects of modulation and explains why certain types of modulation are used in differing situations. The chapter also explains, using mathematical notation, the operation of modulators and demodulators. It provides block diagrams of modulators and demodulators, both analog and digital, and derives the mathematical expressions for their form where appropriate. The chapter then discusses notion of phase lock and the phase‐locked loop (PLL) and Costas loops. It demonstrates the operation of multibit digital modulation using quadrature amplitude modulation (QAM) and quadrature phase shift keying (QPSK). The chapter helps the reader to understand the use of advanced modulation techniques, such as orthogonal frequency division multiplexing (OFDM), for increased digital bit rate; and spread‐spectrum (SS) techniques: direct‐sequence SS and frequency‐hopping SS.

  • Limitations to Radio Frequency Human Exposure

    Populations are exposed to electromagnetic fields (EMF), the levels of which continue to increase due to more wireless systems (such as Wi‐Fi) and as technology advances, for example, LTE operation may increase the human exposure by 20%. Limitations to Radio Frequency (RF) human exposure contain restrictions on exposure that are intended to assist those with responsibility for the safety of the general public and workers. This chapter discusses a specialist area; it is of significance to spectrum managers and policy‐makers, as stringent policies, regulations and approaches affect the provision of radio services. There are countless studies on EMF risks; the chapter focuses on policies and regulations without entering the biological arena. The national limitations on radio frequency human exposure are becoming more stringent, due to societal concerns and electromagnetic hypersensitivity. Municipalities and national administrations are striving to lower thresholds. The globalization and harmonization may lead to the adoption of the universal levels of ICNIRP.

  • Model Predictive Control of Impedance Source Inverter

    The control strategy of the power converter plays a crucial role in ensuring reliable and efficient operation of renewable based distributed generation (DG) systems. In most applications, proportional-integral (PI) based cascaded control structures have been used to control current, voltage, etc. To eliminate the drawbacks of the cascaded control structure and difficulties of the modulation techniques, this chapter examines the model predictive control (MPC) technique for impedance source - Z-source (ZS) and quasi-Z-source (qZS) - three-leg, four-leg, and multiphase inverters. Then, it presents ZS/qZS three-phase three-leg, four-leg, and multiphase (five-phase) inverter topologies, along with a description of the topology, model, and switching schemes for control. After that, the MPC algorithm for ZS/qZS three-phase, three-leg, four-leg, and multiphase (five-phase) inverters are presented. Finally, to prove the addressed MPC strategy, a performance investigation has been carried out with qZS four-leg inverter and simulation results are presented to demonstrate the capabilities of the MPC.

  • National Spectrum Management

    The national radio frequency (RF) spectrum is regulated by a fixed and wireless telecommunications ministry or national agency. The National Spectrum Management (NSM) offers the radio spectrum for both government and non‐government use to stimulate social and economic progress, to achieve an efficient and effective use of the spectrum. The responsible spectrum management ministry or agency may be structured in different ways according to the law, customs and telecommunication resources of the country concerned. The spectrum management structure is naturally formed around the functions that it must perform. Regulators typically address interference concerns solely through regulations on transmitters, despite the fact that the receivers are interfered; interference is determined by both transmitter and receiver. In order to overcome linguistic barriers, the RF spectrum management and licensing of France can serve francophone countries, while the UK and US regulations are advantageous to English‐speaking countries.

  • Heterogeneous Networks


  • Visible Light‐Based Communication and Localization

    Light‐emitting diodes (LEDs) are rapidly being embedded in different commonly used devices. Because LED‐based light sources are widely available, there are several options for visible light communication and positioning systems. This chapter provides an overview of the technologies that have paved the way for visible light communication and positioning systems. It focus on visible light positioning (VLP) systems using information arriving at light detectors from specific light sources and also on how the arrangements of different light detectors can improve VLP system accuracy and usability. VLP systems may use the identity of light anchors, fingerprinting methods, ranging for trilateration, and other methods based on image sensors and computer vision to provide a position fix. The chapter discusses some of the pros and cons of these techniques for VLP. It presents a geometrical analysis only for the image‐sensor based VLP systems.

  • Wireless Communications Blocks Integration

    This chapter looks at top level view of wireless communication systems, reviews 4G standards, and integrates each wireless communication block. The International Standard Organisation (ISO) has defined the Open Systems Interconnection (OSI) 7 layer model for network protocols. The advantage of the OSI 7 layer model is that each layer is regarded as a black box and one layer transfers the input/output to another layer above/below the layer. There have always been technology competitions to meet the requirements and secure a share of the new market. The chapter takes a look at two technology camps: Long‐Term Evolution (LTE) and Worldwide Interoperability for Microwave Access (WiMAX) and compares their physical layer technologies. The LTE physical layer is similar to the WiMAX physical layer. Their key physical layer technologies include MIMO, OFDMA, AMC, Turbo code, and so on. The chapter concludes with a note on System‐on‐Chip (SoC) design for a WiMAX handset.

  • Coordinated Multipoint Transmission and Reception


Standards related to Radio frequency

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American National Standard Methods of Measurement for Hearing Aid Compatibility with Wireless Communications

Guide for RF Protection of Personnel Working in the Vicinity of Wireless Communications Antennas Attached to Electric Power Line Structures

This Guide presents information on establishing an effective safety program to assure compliance with the applicable regulations for radio frequency (RF) protection of electrical workers in the vicinity of wireless communication antennas adjacent or attached to electrical power line structures. The Guide also provides information on power frequency electric and magnetic field immunity of RF personal monitors and RF protective ...

IEEE Recommended Practice for Determining Safe Distances From Radio Frequency Transmitting Antennas When Using Electric Blasting Caps During Explosive Operations

This project provides recommended practices for the prediction and practical determination of safe distances from radio and radar transmitting antennas when using electric initiators to remotely detonate an explosive charge. Specifically, this document includes mathematical formulas, tables, and charts that allow the user to determine safe distances from RF transmitters with spectrum bands from 0.5 MHz to 300 GHz, including ...

IEEE Recommended Practice for Measurements and Computations of Radio Frequency Electromagnetic Fields With Respect to Human Exposure to Such Fields, 100 kHz-300 GHz

Revise and develop specifications for preferred methods for measuring and computing external radiofrequency electromagnetic fields to which persons may be exposed. In addition, the document will specify preferred methods for the measurement and computation of the resulting fields and currents that are induced in bodies of humans exposed to these fields over the frequency range of 100 kHz to 300 ...

IEEE Recommended Practice for Radio-Frequency (RF) Absorber Evaluation in the Range of 30 MHz to 5 GHz

To develop recommended practices for RF absorbers testing in the radiated emission frequesncy range, 30-1000 Mhz, and provide realistic and repeatable figures of merit for the RF absorption characteristics of typical anechoic chamber lining applied to a metallic wall.

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Jobs related to Radio frequency

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