Radio frequency tag and reader with asymmetric communication bandwidth
First Claim
1. An asymmetric bandwidth communication system comprising:
- a. a powered interrogator/reader downlink transmitting in a non-TDCIR signal;
b. a transponder or tag receiving said non-TDCIR transmission to at least partially or wholly power said tag;
c. said non-TDCIR downlink transmission from said interrogator/reader instructing said transponder to broadcast data;
d. said transponder uplink communicating with said interrogator/reader using time domain carrierless impulse radio (TDCIR) having ultra wide band width frequency spectrum of a short time duration pulse; and
e. said powered interrogator/reader receiving the TDCIR ultra wide band short time duration pulse uplink communication;
whereby data is communicated from said transponder or tag to the said interrogator/reader using very little transponder power and an uncomplicated, low cost transponder design that is easily manufactured.
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Accused Products
Abstract
An asymmetric bandwidth communication system enables wireless communication between interrogators/readers and transponders/tags. A transponder transmits TDCIR (Time Domain Carrierless Impulse Radio) signals in the uplink direction and receives non-TDCIR signals, such as electromagnetic continuous waves, in the downlink direction. The transponder may receive partial or whole power from non-TDCIR signals. The TDCIR utilizes electromagnetic impulses with short duration and ultra wide bandwidth. It offers high data rate reliable communication at low power and design complexity. It also demonstrates resilience against path fading, selective absorption and reflection by physical matters and excellent location determination capabilities.
96 Citations
29 Claims
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1. An asymmetric bandwidth communication system comprising:
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a. a powered interrogator/reader downlink transmitting in a non-TDCIR signal;
b. a transponder or tag receiving said non-TDCIR transmission to at least partially or wholly power said tag;
c. said non-TDCIR downlink transmission from said interrogator/reader instructing said transponder to broadcast data;
d. said transponder uplink communicating with said interrogator/reader using time domain carrierless impulse radio (TDCIR) having ultra wide band width frequency spectrum of a short time duration pulse; and
e. said powered interrogator/reader receiving the TDCIR ultra wide band short time duration pulse uplink communication;
whereby data is communicated from said transponder or tag to the said interrogator/reader using very little transponder power and an uncomplicated, low cost transponder design that is easily manufactured. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An asymmetric bandwidth communication system comprising:
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a. a powered interrogator/reader downlink transmitting in a non-TDCIR signal;
b. a transponder or tag receiving said non-TDCIR transmission to wholly power said tag;
c. said non-TDCIR downlink transmission from said interrogator/reader instructing said transponder to broadcast data;
d. said transponder uplink communicating by a second antenna with said interrogator/reader using time domain carrierless impulse radio (TDCIR) having ultra wide band width frequency spectrum and a short time duration pulse; and
e. said powered interrogator/reader receiving the TDCIR ultra wide band short time duration pulse uplink communication;
whereby data is communicated from said transponder or tag to the said interrogator/reader using very little transponder power and an uncomplicated low cost transponder design that is easily manufactured.
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- 12. An asymmetric bandwidth communication apparatus, comprising at least one Time-Domain Carrierless Impulse Radio (TDCIR) transmitter and at least one non-TDCIR receiver.
- 21. An asymmetric bandwidth communication apparatus, comprising at least one non-TDCIR transmitter and at least one TDCIR receiver.
Specification