Pole switch down converter with symmetric resonator
First Claim
1. A circuit for down-converting a modulated signal comprising:
- a first and second λ
/2 resonator for collecting RF energy, wherein a differential RF signal is coupled to said first and second λ
/2 resonator;
a switching means coupled at one end of the first λ
/2 resonator and one end of second λ
/2 resonator for connecting said first and second λ
/2 resonator;
a control means for controlling said switching means; and
a detecting means coupled to said first and second λ
/2 resonator for detecting the down-converted signal, whereinsaid control means is adapted to initiate in a down-conversion cycle of said switching means to connect said first and second λ
/2 resonator for approximate half of the RF carrier period of the modulated signal.
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Abstract
A pole switch down-converter with symmetric resonator which reduce the non resonating phase to approximately half of the RF carrier period of the modulated signal is proposed. The down-converter comprises a first and second λ/2 resonator for collecting RF energy, wherein a differential RF signal is coupled to the first and second λ/2 resonator, a switching means coupled at one end of the first λ/2 resonator and one end of second λ/2 resonator for connecting the first and second λ/2 resonator, a control means for controlling the switching means, and a detecting means coupled to the first and second λ/2 resonator for detecting the down-converted signal, wherein the control means is adapted to initiate in a down-conversion cycle the switching means to connect the first and second λ/2 resonator for approximate half of the RF carrier period of the modulated signal. With this pole switch down-converter adjacent RF channels can be selected and down-converted by slightly varying the pole switch repetition rate.
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Citations
21 Claims
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1. A circuit for down-converting a modulated signal comprising:
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a first and second λ
/2 resonator for collecting RF energy, wherein a differential RF signal is coupled to said first and second λ
/2 resonator;a switching means coupled at one end of the first λ
/2 resonator and one end of second λ
/2 resonator for connecting said first and second λ
/2 resonator;a control means for controlling said switching means; and a detecting means coupled to said first and second λ
/2 resonator for detecting the down-converted signal, whereinsaid control means is adapted to initiate in a down-conversion cycle of said switching means to connect said first and second λ
/2 resonator for approximate half of the RF carrier period of the modulated signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for down-converting a modulated signal, comprising the steps of:
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providing a first and second λ
/2 resonator for collecting RF energy,coupling a differential RF signal to said first and second λ
/2 resonator;connecting after said first and second λ
/2 resonator oscillate, said first and second λ
/2 resonator for approximate half of the RF carrier period of the modulated signal; anddetecting the down-converted signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification