Pulse shaping signals for ultrawideband communication
First Claim
Patent Images
1. A method of generating an ultrawideband radio frequency pulse, comprising:
- generating a carrier signal having a selected frequency;
shaping the carrier signal with a window function to produce an ultrawideband pulse.
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Abstract
An ultrawideband radio frequency pulse is generated by shaping a carrier signal having a selected frequency with a window function. The shaped carrier is gated to produce the ultrawideband pulse. In further embodiments, the window function comprises a sinusoidal function, and the ultrawideband pulse is formed via a mixer and a CMOS radio frequency switch.
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Citations
29 Claims
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1. A method of generating an ultrawideband radio frequency pulse, comprising:
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generating a carrier signal having a selected frequency;
shaping the carrier signal with a window function to produce an ultrawideband pulse. - View Dependent Claims (2, 3, 4, 5)
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6. An ultrawideband radio frequency signal generator, comprising:
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a first signal generator operable to generate a sinusoidal window function;
a second signal generator operable to generate a carrier signal; and
a mixer operable to produce an ultrawideband radio frequency product signal as a product of the sinusoidal window function and the carrier signal. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An ultrawideband radio frequency data communications device, comprising:
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a first signal generator operable to generate a sinusoidal window function;
a second signal generator operable to generate a carrier signal; and
a mixer operable to produce an ultrawideband radio frequency product signal as a product of the sinusoidal window function and the carrier signal. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of generating an ultrawideband radio frequency signal, comprising:
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generating a sinusoidal carrier signal having a selected frequency;
generating a sinusoidal window shaping signal having a frequency lower than that of the carrier signal;
mixing the carrier signal and window shaping signal to obtain a product signal; and
gating the product signal to form an ultrawideband signal such that the window shaping signal component of the product forms a sinusoidal window pulse function. - View Dependent Claims (19, 20)
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21. An ultrawideband radio frequency signal generator, comprising:
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a first signal generator operable to generate a sinusoidal window function;
a second signal generator operable to generate a carrier signal; and
a mixer operable to produce an ultrawideband radio frequency product signal as a product of the sinusoidal window function and the carrier signal; and
an RF switch operable to gate the ultrawideband radio frequency product signal, wherein the RF switch comprises at least three coupled CMOS transistors. - View Dependent Claims (22, 23, 24)
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25. An ultrawideband radio frequency data communications system, comprising:
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a first signal generator operable to generate a sinusoidal window function;
a second signal generator operable to generate a carrier signal;
a mixer operable to produce an ultrawideband radio frequency product signal as a product of the sinusoidal window function and the carrier signal;
a modulator that is coupled to receive a data signal from a data signal source, the modulator further coupled to modulate the ultrawideband radio frequency product with the data signal; and
an antenna coupled to receive the ultrawideband radio frequency product signal and further operable to transmit the ultrawideband radio frequency product signal. - View Dependent Claims (26, 27, 28, 29)
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Specification