Apparatus, system, and method for down converting and up converting electromagnetic signals
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Abstract
Methods, systems, and apparatuses for down-converting and up-converting an electromagnetic signal. In embodiments, the invention operates by receiving an electromagnetic signal and recursively operating on approximate half cycles of a carrier signal. The recursive operations can be performed at a sub-harmonic rate of the carrier signal. The invention accumulates the results of the recursive operations and uses the accumulated results to form a down-converted signal. In embodiments, up-conversion is accomplished by controlling a switch with an oscillating signal, the frequency of the oscillating signal being selected as a sub-harmonic of the desired output frequency. When the invention is being used in the frequency modulation or phase modulation implementations, the oscillating signal is modulated by an information signal before it causes the switch to gate a bias signal. The output of the switch is filtered, and the desired harmonic is output.
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Citations
117 Claims
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1-76. -76. (canceled)
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77. An apparatus for up-converting an electromagnetic signal, comprising:
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a first and second amplifier each having a first, second and third port;
a switching device having a first, second and third port;
a first and second capacitor each having a first and second port; and
a first and second impedance device each having a first and second port, wherein the second port of the first and second amplifier are electrically coupled together, the third port of the first amplifier is electrically coupled to the first port of the first impedance device, the third port of the second amplifier is electrically coupled to the first port of the second impedance device, the first port of the switching devices, the second port of the first impedance device and the first port of the first capacitor are electrically coupled together, and the second port of the switching device, the second port of the second impedance device and the first port of the second capacitor are electrically coupled together, and wherein a switching signal is applied to the third port of the switching device. - View Dependent Claims (78, 79, 80, 81, 82, 83, 91, 92, 93, 94)
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84-90. -90. (canceled)
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95. A method for up-converting an information signal, comprising:
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amplifying a non-inverted information signal;
amplifying an inverted information signal;
electrically coupling the amplified non-inverted information signal to a first port of a first capacitor through a first impedance, wherein the first capacitor and first impedance are electrically coupled at a first node;
electrically coupling the amplified inverted information signal to a first port of a second capacitor through a second impedance, wherein the second capacitor and second impedance are electrically coupled at a second node; and
gating a switching device coupled between the first node and the second node according to a control signal; and
wherein an up-converted signal is produced differentially between a second port of the first capacitor and a second port of the second capacitor. - View Dependent Claims (96, 97, 98, 99, 100, 101, 102, 103, 104)
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105. A transmitter, comprising:
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a first amplifier that receives a non-inverted information signal and outputs an amplified non-inverted information signal;
a second amplifier that receives an inverted information signal and outputs an amplified inverted information signal;
first and second impedances;
a first capacitor that receives the amplified non-inverted information signal at a first port through said first impedance, wherein the first capacitor and first impedance are electrically coupled at a first node;
a second capacitor that receives the amplified inverted information signal at a first port through said second impedance, wherein the second capacitor and second impedance are electrically coupled at a second node; and
a switching device coupled between the first node and the second node, wherein the switching device receives a control signal; and
wherein an up-converted signal is produced differentially between a second port of the first capacitor and a second port of the second capacitor. - View Dependent Claims (106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117)
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Specification