Amplifiers – With resistive-type amplifying device – Magnetoresistive type
Patent
1978-09-13
1981-11-17
Mullins, James B.
Amplifiers
With resistive-type amplifying device
Magnetoresistive type
H03F 1500
Patent
active
043014186
ABSTRACT:
A process and a small, sensitive, low noise, high gain, power amplifier used in the process, for exploiting the anisotropic magnetoresistance effect in a ferromagnetic thin-film. The magnetization of the thin-film is biased to lie along the hard axis. The amplifier is configured so that a sensing current in the thin-film flows at an angle of forty-five degrees to the nominal direction of magnetization, and the current to be amplified produces a magnetic field parallel to the easy axis of the thin-film.
REFERENCES:
patent: 3382448 (1968-05-01), Oberg et al.
patent: 3382449 (1968-05-01), Enomoto
Gordon et al., "A Sensitive Magnetoresistive Power Amplifier", Digests of e Intermag Conference, IEEE, Jun. 5, 1977, pp. 2-7.
Gordon et al., "A Sensitive Magnetoresistive Power Amplifier", IEEE Transactions on Magnetics, vol. Mag-13, No. 5, Sep. 14, 1977.
Anderson Wallace E.
Gordon Daniel I.
Schwee Leonard J.
Branning A. L.
Bushnell R. E.
Mullins James B.
Sciascia R. S.
The United States of America as represented by the Secretary of
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