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2. RF power amplifier - Wikipedia

   en.wikipedia.org/wiki/RF_power_amplifier

   A radio-frequency power amplifier (RF power amplifier) is a type of electronic amplifier that converts a low-power radio-frequency (RF) signal into a higher-power signal. [1] Typically, RF power amplifiers are used in the final stage of a radio transmitter , their output driving the antenna .

3. Intermediate frequency - Wikipedia

   en.wikipedia.org/wiki/Intermediate_frequency

   The triode vacuum tube amplifiers of the day would not amplify stably above 500 kHz; however, it was easy to get them to oscillate above that frequency. Armstrong's solution was to set up an oscillator tube that would create a frequency near the incoming signal and mix it with the incoming signal in a mixer tube, creating a heterodyne or signal ...

4. Intermediate-frequency amplifier - Wikipedia

   en.wikipedia.org/wiki/Intermediate-frequency...

   IF amplifiers in heterodyne receivers apply gain in a frequency band between the input radio frequency and output audio frequency or video frequency, often following one stage of RF amplifier. This allows most of the gain in the form of a fixed-frequency amplifier, simplifying tuning. Compare to its predecessor, the tuned RF receiver.

5. Antenna amplifier - Wikipedia

   en.wikipedia.org/wiki/Antenna_amplifier

   In electronics, an antenna amplifier (also: aerial amplifier or booster) is a device that amplifies an antenna signal, usually into an output with the same impedance as the input impedance. Typically 75 ohm for coaxial cable and 300 ohm for twin-lead cable. An antenna amplifier boosts a radio signal considerably for devices that receive radio ...

6. Regenerative circuit - Wikipedia

   en.wikipedia.org/wiki/Regenerative_circuit

   The result of this is to greatly increase the gain of the amplifier at the bandpass frequency (resonant frequency), while not increasing it at other frequencies. So the incoming radio signal is amplified by a large factor, 10 3 - 10 5, increasing the receiver's sensitivity to weak signals.

7. Meta is winning over Wall Street while the rest of Big Tech ...

   www.aol.com/finance/meta-winning-over-wall...

   Amazon is up 4.2% during the same period, but, as of Friday, is off 3% since it reported its earnings on Feb. 7. But one company is thriving: Meta .