FREQUENCY-MODULATION, or the technique of varying the frequency of radio waves for signalling purposes, has been known and used for many years ; but it was not until Armstrong in the United States in ...

THE resistance-capacity tuned oscillator is well known as a very good generator of audio-frequency oscillations. In a recent communication by Rakshit and Bhattacharyya 1 it was pointed out that the ...

Designed for engineers who work on wideband designs in communications, radar, and electronic warfare, the RSA7100B wideband RF signal analyzer and streaming recorder from Tektronix Inc. offers more ...

AM and FM radio before 1920 -- Congestion and frequency-modulation research, 1913-1933 -- RCA, Armstrong, and the acceleration of FM research, 1926-1933 -- The serendipitous discovery of staticless ...

The most basic characteristic of a Voltage Controlled Oscillator (VCO) is the manner in which the oscillator changes frequency as a function of voltage applied to its tuning port. As the state of the ...

The key parameters of the FSS technique and their impact on EMI performance. How to evaluate FSS performance using simulation, ICs, and a signal generator. Frequency spread spectrum (FSS) is a ...