RF Circuits

  

This list of circuits are related to Radio frequency (RF), that deals with circuits that are designed to operate in the radio frequency spectrum. These circuits are set to operate within the range of about 3 kHz up to 300 GHz.

These circuits are incorporated with everything that transmits or receives radio waves, like mobile phones, radios, Wi-Fi, two-way radios, gps circuits, jammer ciruits, transmitters, rf amplifiers, RF oscillators, PLLs, Voltage-controlled oscillators, Transmitters, Transmission lines, RF connectors, Antennas, Receivers, Tuners, Modulators, demodulators, detectors, RF filters, RF shielding, Ground plane, DSSS, Digital radio, etc. 

Electric currents that oscillate at radio frequencies have special properties not shared by direct current or alternating current of lower frequencies. 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. RF current does not penetrate deeply into electrical conductors but flows along their surfaces; this is known as the skin effect. For this reason, when the human body comes in contact with high power RF currents it can cause superficial but serious burns called RF burns. In order to receive radio signals an antenna must be used. However, since the antenna will pick up thousands of radio signals at a time, a radio tuner is necessary to tune in to a particular frequency (or frequency range). This is typically done via a resonator in its simplest form, a circuit with a capacitor and an inductor forming a tuned circuit. Radio frequency (RF) energy has been used in medical treatments for over 80 years,  generally for minimally invasive surgeries, using radiofrequency ablation and coagulation, including the treatment of sleep apnea. Magnetic resonance imaging (MRI) uses radio frequency waves to generate images of the human body.

People are requesting walkie-talkie and RF remote control schematics, so here are some. Building these circuits needs special equipment and expertise in RF circuits. If you have no experience in RF, I suggest that you choose the easy way and buy a ready-made RF module. Otherwise you can realize you have an exact copy of a circuit in your hand, still it doesn't work the way it should.

 

 

News

Murata

Electropages (blog) Murata - RF sub-modules keep mobile devices small as Wi-Fi complexity and speed increase Electropages (blog) Using proprietary technology, the sub-modules feature a smaller front-end circuit in...

Apr 27, 2017

The Pentagon's Seek-and-Destroy Mission for Counterfeit Electronics

Scientific American The Pentagon's Seek-and-Destroy Mission for Counterfeit Electronics Scientific American The dielets—which DARPA also calls “chiplets”—will enable the companies that install those microchips in...

Apr 28, 2017

ProTek Devices' Steering Diode TVS Array Combo Component Protects Circuits in Consumer and Networking ...

ProTek Devices' Steering Diode TVS Array Combo Component Protects Circuits in Consumer and Networking ... Benzinga These components deliver circuit protection in various electronic systems against lightning;...

Apr 10, 2017

A Brief Introduction to the Common Mode Choke and Its Applications

All About Circuits A Brief Introduction to the Common Mode Choke and Its Applications All About Circuits A choke is a power magnetics component which is used in electronic circuits . It is an inductor that is...

Apr 24, 2017

Bristol Researchers Create New RF Design Tool For 5G Devices

RF Globalnet (press release) Bristol Researchers Create New RF Design Tool For 5G Devices RF Globalnet (press release) At Bristol, we have developed a novel radio frequency ( RF ) design methodology that will...

Apr 28, 2017

New High-Power Switch Family for Wireless Applications

Electronics360 New High-Power Switch Family for Wireless Applications Electronics360 Both of these trends put more stringent requirements on power handling capability and RF component linearity in the transmission...

Apr 19, 2017

Dyco Electronics Acquired by Gowanda – Featured At APEC Power Electronics

RF Globalnet (press release) Dyco Electronics Acquired by Gowanda – Featured At APEC Power Electronics RF Globalnet (press release) Gowanda Electronics designs, manufactures and supplies precision electronic...

Apr 4, 2017

The Zacks Industry Rank Highlights: Taiwan Semi, Micron, Xilinx and Coherent

The Zacks Industry Rank Highlights: Taiwan Semi, Micron, Xilinx and Coherent Nasdaq For example, the Zacks Semiconductor Table listed solitary one-firm industry groups with the names Circuit Foundry, Memory, Programmable...

Mar 30, 2017

Real World RF Filter Design and Construction

Real World RF Filter Design and Construction Hackaday We bet when [devttyS0] made his latest video about RF filter design (YouTube, embedded below), he had the old saying in mind: in theory, there's no difference...

Mar 31, 2017

AVX Wins Medical Design Briefs' 2016 Readers' Choice Product of the Year Award

Yahoo Finance AVX Wins Medical Design Briefs' 2016 Readers' Choice Product of the Year Award Yahoo Finance ... components and interconnect solutions, has won Medical Design Briefs' 2016 Readers'...

Apr 6, 2017

Units & Modules