DIRECT CONVERSION RECEIVING ARCHITECTURE WITH AN INTEGRATED TUNER SELF ALIGNMENT FUNCTION
First Claim
1. A radio system with self alignment, the system comprising:
- a tank circuit in communication with an antenna input;
an analog to digital converter connected to the tank circuit to digitize a tank output signal and generate a digital signal corresponding to the tank output signal;
a digital down converter in communication with the analog to digital converter and configured to receive the digital signal;
a digital up converter configured to generate a radio frequency test signal;
a local oscillator forming part of the digital down converter and the digital up converter to provide a mixing frequency; and
a digital to analog converter in communication with the digital up converter and configured to provide the radio frequency test signal to the antenna input.
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Accused Products
Abstract
A direct conversion receiver with an integrated self alignment tuner. The system includes a tank circuit, an analog to digital converter, a digital down converter, a digital up converter, a local oscillator, and a digital to analog converter. The tank circuit receives a radio frequency signal from an antenna input. The analog to digital converter is connected to the tank circuit to digitize the tank output signal and generate a corresponding digital signal. The digital down converter is in communication with the analog to digital converter and generates an intermediate frequency signal based on the digital signal and the output of the local oscillator. The digital up converter is in communication with the digital to analog converter to generate a radio frequency test signal, where the digital to analog converter provides the radio frequency test signal to the antenna input.
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Citations
18 Claims
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1. A radio system with self alignment, the system comprising:
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a tank circuit in communication with an antenna input; an analog to digital converter connected to the tank circuit to digitize a tank output signal and generate a digital signal corresponding to the tank output signal; a digital down converter in communication with the analog to digital converter and configured to receive the digital signal; a digital up converter configured to generate a radio frequency test signal; a local oscillator forming part of the digital down converter and the digital up converter to provide a mixing frequency; and a digital to analog converter in communication with the digital up converter and configured to provide the radio frequency test signal to the antenna input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for aligning a radio system, the method comprising the steps of:
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providing a tank circuit in communication with an antenna input; digitizing a tank output signal; converting the tank output to a intermediate frequency signal; generating a digitized oscillation signal; converting the digitized oscillation signal to a digitized test signal; generating an analog test signal based on the digitized test signal; providing the analog test signal to the antenna input. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification