| 摘要 |
Quadrature demodulator (10) and quadrature modulator (30) which comprise a first oscillator (11) and a second oscillator (12), a separate excitation signal being fed to the first osciallator (11) and second oscillator (12) in order to determine the point in time at which switching between two stable states takes place, and the quadrature demodulator (10) and quadrature modulator (30) further comprise excitation means (17, 18). In the quadrature demodulator (10), an input signal Si(t) is fed, by means of which signal a parameter of one of the elements of the first and the second oscillator (11,12) is influenced and a set of quadrature output signals Io, Qo is produced. In the quadrature modulator, a first quadrature signal and a secon d quadrature signal are fed to the quadrature modulator (30), by means of whic h signals a parameter of one of the elements of the first and the second oscillator (11, 12) is influenced, and the quadrature modulator (30) further comprises summing means (31) in order to produce a modulated output signal S o (t).
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