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

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Miniaturization of Electronics Challenges EMI/RFI Industry

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Genetically Modified Bacteria Conduct Electricity, Ushering in New Era of Green Electronics

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The Bandwidth Bottleneck That Is Throttling the Internet

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Vishay Intertechnology Miniature Minimold Through-Hole IR Receivers Offer Improved Optical Performance and RF ... Nasdaq Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE ( VSH ), is one of the...

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Shifts Sited in Mixed-Signal Design

Shifts Sited in Mixed-Signal Design EE Times Digital circuits will still see declines in switching energy and power as they scale to 16 nm and beyond, but we should not expect gates to run much faster than in previous...

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Take responsibility for electronic-waste disposal

Nature.com Take responsibility for electronic -waste disposal Nature.com Components such as circuit boards and the compressors in refrigerators and air-conditioners could be labelled with radio-frequency...

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Synthesis of Design Rules and Patterns

Electronic Design Synthesis of Design Rules and Patterns Electronic Design By including pattern matching in design verification and DFM, we have both eased and improved how we check, analyze, and score integrated-...

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Deciding Between DC-DC Modules or Discretes When Facing a Space Jam

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