Multi-antenna system for harvesting energy and transmitting data
A multi-antenna system for harvesting energy and transmitting data includes an energy storing unit, antenna transmission units, and a load unit. Each antenna transmission unit includes an antenna module, a splitting module, an energy generation module, and a data processing module. The splitting module splits a wireless signal received by the antenna module into a first splitting signal and a second splitting signal and transmits the first splitting signal to an energy generation module to convert the first splitting signal into electrical energy stored in an energy storing unit and provided to the data processing module. The energy storing unit provides the electrical energy for the load unit. The data processing module receives one of the second splitting signals, converts it into a control signal, and transmits the control signal to the load unit. The load unit operates according to the control signal.
1. A multi-antenna system for harvesting energy and transmitting data comprising:
an energy storing unit;
a plurality of antenna transmission units coupled to the energy storing unit, wherein each of the plurality of antenna transmission units comprises:
an antenna module configured to receive a wireless signal from a source terminal;
a splitting module coupled to the antenna module and configured to receive the wireless signal and split the wireless signal into a first splitting signal and a second splitting signal;
an energy generation module coupled to the splitting module, wherein the energy generation module is configured to receive the first splitting signal, convert the first splitting signal into electrical energy, and transmit the electrical energy to the energy storing unit to store the electrical energy in the energy storing unit; and
a data processing module coupled to the splitting module and the energy generation module and configured to receive the electrical energy and to receive the second splitting signal, wherein the data processing module is configured to convert the second splitting signal into a control signal; and
a load unit coupled to the energy storing unit and the corresponding data processing module of one of the plurality of antenna transmission units and configured to harvest the electrical energy from the energy storing unit and receive the control signal from the corresponding data processing module, wherein the load unit is configured to operate according to the control signal;
wherein the data processing module comprises:
a main control portion coupled to splitting module and configured to the second splitting signal, wherein the main control portion is configured to process the second splitting signal to generate the control signal;
a data transmission portion coupled to the main control portion and configured to receive the control signal; and
a data memory portion coupled to the main control portion and the data transmission portion and configured to store data transmitted and processed by the main control portion and the data transmission portion;
wherein the load unit is coupled to the data transmission portion of the corresponding data processing module;
wherein the main control portion comprises:
a demodulator coupled to the splitting module and configured to receive the second splitting module, wherein the demodulator is configured to demodulate the second splitting module into a demodulation signal;
a tuner coupled to the data transmission portion, wherein the demodulator is configured to receive output data outputted by the data transmission portion, tune the output data into an output signal and transmit the output signal to the splitting module, and the splitting module is configured to transmit the output signal to the antenna module, thereby transmitting the output signal to the source terminal;
a command decoder coupled to demodulator and configured to receive the demodulation signal, wherein the command decoder is configured to decode the demodulation signal to generate a control command, process the control command to generate the control signal, and transmit the control signal to the data transmission portion; and
a clock generator coupled to the demodulator, the tuner, and the command decoder and configured to generate a clock signal required by the demodulator, the tuner, and the command decoder.
2. The multi-antenna system for harvesting energy and transmitting data according to claim 1 , wherein the energy generation module comprises:
an energy conversion portion configured to covert the first splitting signal into basic electrical energy; and
an energy adjustment portion coupled to the energy conversion portion and configured to covert the basic electrical energy into different voltages as select energy.
3. The multi-antenna system for harvesting energy and transmitting data according to claim 1 , wherein the data transmission portion is a serial peripheral interface, an internal integrated circuit bus, or a system management bus.
4. The multi-antenna system for harvesting energy and transmitting data according to claim 1 , wherein the splitting module is a balanced to unbalanced converter.
5. The multi-antenna system for harvesting energy and transmitting data according to claim 1 , wherein the antenna module is a single-frequency antenna or a multi-frequency antenna.
6. The multi-antenna system for harvesting energy and transmitting data according to claim 1 , wherein a reception frequency band and a transmission frequency band of the antenna module range from 3 MHz to 7.15 GHz.
7. The multi-antenna system for harvesting energy and transmitting data according to claim 1 , wherein the energy storing unit is an energy storing capacitor.
8. The multi-antenna system for harvesting energy and transmitting data according to claim 1 , wherein the load unit is a battery-free e-paper label.