What if a doorbell never needed a battery and still sent signals wirelessly over long distances. This design can turn every ...

TOKYO--(BUSINESS WIRE)--Renesas Electronics Corporation (TSE:6723), a premier supplier of advanced semiconductor solutions, today announced the development of two 2.4 GHz RF transceiver technologies ...

It is often required to switch electrical appliances from a distance without being a direct line of sight between the transmitter and receiver. As you may well know, an RF based wireless remote ...

Direct conversion (or low IF) receiver designs have been in existence for many years. They are widely used in mobile phones and cordless telephones because of their simplicity and lower cost. However, ...

The relentless drive for higher performance and increased functional integration has ushered in new challenges for managing electromagnetic interference (EMI) in densely packed mixed-signal ...

If you cultivate an interest in building radios it’s likely that you’ll at some point make a simple receiver. Perhaps a ...

Designers often choose a super-regenerative receiver—despite its frequency instability and poor selectivity—for battery-powered, short-range, wireless applications in which power consumption is a ...

The regenerative radio is long-ago superseded in commercial receivers, but it remains a common project for electronics or radio enthusiasts seeking to make a simple receiver. It’s most often seen for ...

VARIABLE condensers are now so commonly employed in radio receivers to tune circuits including a constant inductance that the use, some years ago, of variable inductances or variometers with fixed ...

Specimen is a TRF (tuned radio frequency) receiver utilizing five CX301-A tubes. Circuit appears to be two RF (radio frequency) stages ahead of a detector, and followed by two AF (audio frequency) ...

Marked: "Day-Fan Electric Company / Dayton, Ohio / Serial No. 089 / Type No. 5056". Unit is Tuned Radio Frequency receiver in a mahogany finish cabinet. Five Kellogg 401-A tubes are employed in a ...