Method of and apparatus for performing modulation
First Claim
Patent Images
1. A method of providing a modulated signal, the method comprising:
- providing a phase modulation signal; and
providing amplitude modulation to the phase modulation signal to generate the modulated signal, wherein the phase modulation and amplitude modulation are synchronized.
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Abstract
A modulator and a method of modulating utilizes phase or frequency modulation and amplitude modulation. A delay circuit or synchronization circuit is utilized to coordinate the performance of amplitude modulation and phase modulation. The amplitude modulation can be provided after phase modulation is provided to the signal. The modulation circuit can be utilized in any frequency range including high frequency and low frequency circuits.
42 Citations
20 Claims
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1. A method of providing a modulated signal, the method comprising:
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providing a phase modulation signal; and
providing amplitude modulation to the phase modulation signal to generate the modulated signal, wherein the phase modulation and amplitude modulation are synchronized. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of modulating first data and second data on a signal, the method comprising steps of:
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phase or frequency modulating the signal in accordance with the first data; and
amplitude modulating the signal in accordance with the second data, wherein the steps of phase or frequency modulating and amplitude modulating are coordinated in time with respect to each other to ensure integrity of the first data and the second data. - View Dependent Claims (12, 13, 15, 16, 17, 18, 19, 20)
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14. A modulator, comprising:
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a first data input;
a second data input;
a frequency or phase modulator circuit coupled to the first data input, the frequency or phase modulator circuit providing modulation in response to first data at the first data input; and
an amplitude modulator circuit coupled to the second data input, the amplitude modulator circuit providing modulation in response to second data at the second data input.
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Specification