Methods and apparatus for detecting the envelope of RF power signals
First Claim
1. A method for detecting an envelope of an RF signal, comprising:
- (a) providing an RF transistor operating essentially at a nonlinear operating point at the RF frequency range, said RF transistor being fed by a DC power supply through an RF filter and terminated by a dummy load for RF components in an output signal of said RF transistor;
(b) feeding an RF signal into a input of said RF transistor; and
(c) obtaining an output signal representing said envelope from a fluctuating current drawn by said RF transistor from said DC power supply during a time period when said RF signal is applied to said input.
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Accused Products
Abstract
Apparatus for detecting the envelope of an RF signal that comprises an RF transistor operating essentially at a non-linear operating point at the RF frequency range; a DC power supply for feeding the RF transistor; a dummy load for terminating the output of the RF transistor; and at lease one impedance, through which the DC power supply feeds the RF transistor, for obtaining an indication signal developed across the impedance. The indication signal represents the envelope, from the fluctuating current drawn by the RF transistor from the DC power supply during the time period when the RF signal is applied to the feeding input.
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Citations
17 Claims
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1. A method for detecting an envelope of an RF signal, comprising:
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(a) providing an RF transistor operating essentially at a nonlinear operating point at the RF frequency range, said RF transistor being fed by a DC power supply through an RF filter and terminated by a dummy load for RF components in an output signal of said RF transistor;
(b) feeding an RF signal into a input of said RF transistor; and
(c) obtaining an output signal representing said envelope from a fluctuating current drawn by said RF transistor from said DC power supply during a time period when said RF signal is applied to said input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for detecting an envelope of an RF signal, comprising:
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(a) an RF transistor operating essentially at a non-linear operating point at the RF frequency range;
(b) a DC power supply for feeding said RF transistor;
(c) a dummy load for terminating the output of said RF transistor; and
(d) at lease one impedance, through which said DC power supply feeds said RF transistor, for obtaining an indication signal developed across said impedance, said indication signal representing said envelope, from the fluctuating current drawn by said RF transistor from said DC power supply during the time period when said RF signal is applied to the feeding input. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification