Author
J.D. Maines
Bio: J.D. Maines is an academic researcher. The author has contributed to research in topics: Frequency modulation & Frequency drift. The author has an hindex of 1, co-authored 1 publications receiving 16 citations.
Papers
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TL;DR: In this paper, the authors describe some characteristics of an oscillator based upon the acoustoelectric interaction in piezoelectrics, and make particular reference to frequency modulation and related-device applications.
Abstract: This letter describes some characteristics of an oscillator based upon the acoustoelectric interaction in piezoelectric semiconductors—the acoustoelectric oscillator. Particular reference is made to frequency modulation and to related-device applications.
16 citations
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TL;DR: In this article, high-frequency currents associated with thin photoconducting cadmium sulphide platelets having flat and parallel faces are reported under conditions when round-trip gain due to acousto-electric amplification is achieved.
Abstract: Experimental observations are reported of high-frequency currents associated with thin photoconducting cadmium sulphide platelets having flat and parallel faces. They appear under conditions when `round-trip gain' due to acousto-electric amplification is achieved. They are correlated with departures from Ohm's law. The results are confined to conditions under which a linear theory is believed applicable. The linear theory is outlined and comparison is made with a variety of experimental observations. Semiquantitative agreement is obtained.
28 citations
01 Jan 1970
TL;DR: A review of physical effects in piezoelectric semiconductors originating in the relative strong coupling between the electronic and sound wave systems is given in this paper, where sound amplification, non-electronic losses, effects of free carrier trapping, and a number of strong non-linear effects such as current saturation, current oscillations, and traveling high field and flux domains are discussed.
Abstract: A review is given of a variety of physical effects in piezoelectric semiconductors originating in the relative strong coupling between the electronic and sound wave systems. Among the topics discussed are sound amplification, non-electronic losses, effects of free carrier trapping, and a number of strong non-linear effects as current saturation, current oscillations, and traveling high field and flux domains. A short discussion of some recent non-linear theories is also included.
28 citations
TL;DR: In this article, the authors found that subharmonic generation may inhibit the formation of sonic and subsonic domains in GaAs by current noise measurements, and they also found that the generation of sub-harmonic acoustic waves has been found in GaA by current measurements.
14 citations
TL;DR: In this paper, an acousto-electric excitation of the vibrational modes of the platelet was found to be responsible for the anomalous current in the 1 to 5 GHz range.
8 citations
TL;DR: In this paper, the authors presented results for ZnO acoustoelectric oscillators at room temperature of resistivities from 100 Ω cm to 104 ǫ cm, where the oscillations were divided into three different types depending on the thickness and conductivity of the sample in question.
Abstract: Results are presented for ZnO acoustoelectric oscillators at room temperature of resistivities from 100 Ω cm to 104 Ω cm. Pulsed operation as well as continuous wave operation was possible and frequencies up to 5 GHz and 4 GHz respectively were observed. The oscillations are divided into three different types depending on the thickness and the conductivity of the sample in question. The experimental results are compared with the existing theories for the acoustoelectric oscillator and with results previously obtained with CdS oscillators.
7 citations