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

Energous, Dialog Semiconductor launch small RF charging circuit, possibly destined for 'iPhone 8'

AppleInsider (press release) (blog) Energous, Dialog Semiconductor launch small RF charging circuit , possibly destined for 'iPhone 8' AppleInsider (press release) (blog) The DA4100 RF -Transmit integrated...

Feb 2, 2017

Scalable 100% yield production of conductive graphene inks ...

Science Daily Scalable 100% yield production of conductive graphene inks ... Science Daily Conductive inks are useful for a range of applications, including printed and flexible electronics such as radio frequency...

Feb 21, 2017

Samsung Announces Commercial Readiness 5G RFIC

ZDNet Samsung Announces Commercial Readiness 5G RFIC guru3d.com (press release) Samsung Electronics announced the commercial readiness of its 5G RF Integrated Circuit (RFIC) – a key component in the production...

Feb 20, 2017

Energous discloses availability of RF-transmit integrated circuit

Energous discloses availability of RF -transmit integrated circuit Seeking Alpha By combining multiple discrete components present in our early reference designs into a single silicon chip, we can significantly reduce...

Jan 30, 2017

NI AWR Design Environment version 13 adds features and enhancements to boost RF and microwave design ...

NI AWR Design Environment version 13 adds features and enhancements to boost RF and microwave design ... Semiconductor Today V13 provides key new capabilities and major enhancements to better address the design challenges...

Jan 31, 2017

Resonant Announces $7.5 Million Private Placement by Longboard Capital Advisors

Resonant Announces $7.5 Million Private Placement by Longboard Capital Advisors Yahoo Finance Resonant Inc. (RESN), a designer of filters for radio frequency , or RF , front-ends that specializes in delivering designs for...

Feb 21, 2017

Molex's 4.3-10 RF Connector System and Cable Assemblies Meet High Performance Needs

Molex's 4.3-10 RF Connector System and Cable Assemblies Meet High Performance Needs MENAFN.COM As a leading provider of electronic components and solutions, Molex views innovation as a tool for solving complex...

Feb 20, 2017

CRD-060DD17P-2 Demonstration Board comes with active start-up circuit.

ThomasNet News (press release) (blog) CRD-060DD17P-2 Demonstration Board comes with active start-up circuit . ThomasNet News (press release) (blog) It brings relationships with many of the industry's top radio...

Feb 13, 2017

Cirexx to Exhibit at SMTA Dallas 2017

I-Connect007 Cirexx to Exhibit at SMTA Dallas 2017 I-Connect007 ... Printed Circuit Boards, including HDI and RF /Microwave and Flex Circuits , including Rigid-Flex. Applications engineers will be available at the...

Feb 16, 2017

5G starts with chips like IBM and Ericsson's silicon antenna

Network World 5G starts with chips like IBM and Ericsson's silicon antenna Network World In a two-year joint project, the IBM and Ericsson researchers packed key components of an antenna module, such as power...

Feb 7, 2017

Units & Modules