Most tuning for radios, mobile telephones, GPS sets and other communication devices uses dedicated radio frequency (RF) circuitry. Recent research suggests that a single tuneable RF circuitry could be developed that would suit different applications.
Making RF modules tuneable to different applications
Tuneable capacitors will be familiar to any engineer over a certain age who remembers constructing simple kit radios or radio control devices. Tuning these circuits was often carried out via two sets of metal plates that rotated around a spindle, forming in effect a tuneable device.
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