Method and system for performing distance measuring and direction finding using ultrawide bandwidth transmissions
First Claim
Patent Images
1. A combined ultrawide bandwidth-radio frequency (UWB-RF) remote identification tag, comprising:
- ultrawide bandwidth (UWB) circuitry for-transmitting wireless UWB signals;
radio frequency (RF) circuitry for transmitting data via wireless RF signals; and
interface circuitry formed between the RF circuitry and the UWB circuitry,wherein the UWB signals have a fractional bandwidth in the range of about 0.25 to 2.
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Abstract
An identification tag is provided in which radio frequency (RF) circuitry and ultrawide bandwidth (UWB) circuitry are both provided on the same tag, along with some UWB-RF interface circuitry. The RF circuitry is used to detect when the identification tag must be accessed, and is used to connect the UWB circuitry with a power supply. The UWB circuitry then performs the necessary communication functions with a distant device and the power supply is again disconnected. In this way the power supply is only accessed when the UWB circuitry is needed and it'"'"'s usable lifetime can be maximized.
84 Citations
14 Claims
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1. A combined ultrawide bandwidth-radio frequency (UWB-RF) remote identification tag, comprising:
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ultrawide bandwidth (UWB) circuitry for-transmitting wireless UWB signals; radio frequency (RF) circuitry for transmitting data via wireless RF signals; and interface circuitry formed between the RF circuitry and the UWB circuitry, wherein the UWB signals have a fractional bandwidth in the range of about 0.25 to 2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of responding to an incoming signal, including:
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receiving an incoming radio frequency (RF) signal; processing the incoming RF signal to generate an activation signal; activating an ultrawide bandwidth (UWB) circuit in response to the activation signal; performing a UWB function on a UWB signal with the UWB circuit after the UWB circuit is activated, wherein the UWB function is one of the transmission of data via the UWB signal or the reception of data via the UWB signal and wherein the UWB signals have a fractional bandwidth in the range of about 0.25 to 2. - View Dependent Claims (11, 12, 13, 14)
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Specification