Transmitter for Wireless Power and Broadband Data

A transmitter, comprising:

• a mapper configured to map data bits and power information to N subcarriers to obtain mapped information, wherein N is an integer larger than 1;
• a first-level modulator coupled with an output of the mapper and configured to receive at least a first part of the mapped information and convert the at least the first part of the mapped information into at least a first part of subcarrier specifications, wherein a subcarrier specification includes a complex number that defines an amplitude and a phase of a subcarrier;
• a first orthogonal subcarrier generator coupled with an output of the first-level modulator, configured to:
• receive the at least the first part of the subcarrier specifications:
• translate the at least the first part of the subcarrier specifications from a frequency domain to a time domain;
• and
• generate a first baseband real signal (a first BB Re signal) and a first baseband imaginary signal (a first BB Im signal) that include at least a first part of the N subcarriers;
• a first beamformer coupled with an output of the first orthogonal subcarrier generator and configured to receive the first BB Re signal and the first BB Im signal and, for one or more antenna channels, to modify a phase and/or an amplitude of the first BB Re signal and/or the first BB Im signal to obtain a first directed BB Re signal and/or a first directed BB Im signal;
• and
• two or more antenna channel modules, each configured to drive an antenna and each including:
• a first second-level modulator coupled with an output of the first beamformer and configured to receive the first directed BB Re signal and the first directed BB Im signal and to multiply the first directed BB Re signal with an in-phase intermediate-frequency sine wave (an IF sine wave) and to multiply the first directed BB Im signal with a quadrature intermediate-frequency cosine wave (an IF cosine wave) to obtain a first IF I signal and a first IF Q signal;
• and
• a first digital-to-analog convertor (a first DAC), coupled with an output of the first second-level modulator and configured to convert at least one of the first IF I signal or the first IF Q signal to an analog signal.

A direct-to-RF transmitter, comprising:

• a mapper configured to map data bits and power information to N subcarriers to obtain mapped information, wherein N is an integer larger than 1;
• a first-level modulator coupled with an output of the mapper and configured to receive at least a first part of the mapped information and convert the at least the first part of the mapped information into at least a first part of subcarrier specifications, each subcarrier specification including a complex number that defines an amplitude and a phase of a subcarrier;
• a first orthogonal subcarrier generator coupled with an output of the first-level modulator and configured to receive the at least the first part of the subcarrier specifications, and configured to generate a first baseband real signal (a first BB Re signal) and a first baseband imaginary signal (a first BB Im signal) that include at least a first part of the N subcarriers;
• a first beamformer coupled with an output of the first orthogonal subcarrier generator and configured to receive the first BB Re signal and the first BB Im signal and, for one or more antenna channels, to modify a phase and/or an amplitude of the first BB Re signal and/or the first BB Im signal to obtain a first directed BB Re signal and/or a first directed BB Im signal;
• and
• two or more antenna channel modules, each configured to drive an antenna and each including:
• a first DAC configured to receive the first directed BB Re signal, an oscillator producing an RF I signal and an RF Q signal, a first mixer coupled with the first DAC and the oscillator, a second DAC configured to receive the first directed BB Im signal, a second mixer coupled with the second DAC and the oscillator, an adder coupled with the first mixer and the second mixer, and a power amplifier coupled with the adder.

A direct-to-RF transmitter, comprising:

• a mapper configured to map data bits and power information to N subcarriers to obtain mapped information, wherein N is an integer larger than 1;
• a first-level modulator coupled with an output of the mapper and configured to receive at least a first part of the mapped information and convert the at least the first part of the mapped information into at least a first part of subcarrier specifications, each subcarrier specification including a complex number that defines an amplitude and a phase of a subcarrier;
• a first orthogonal subcarrier generator coupled with an output of the first-level modulator and configured to receive the at least the first part of the subcarrier specifications, and configured to generate a first baseband real signal (a first BB Re signal) and a first baseband imaginary signal (a first BB Im signal) that include at least a first part of the N subcarriers;
• a first second-level modulator coupled with an output of the first orthogonal subcarrier generator and configured to receive the first BB Re signal and the first BB Im signal and to multiply the first BB Re signal with an in-phase intermediate-frequency sine wave (an IF sine wave) and to multiply the first BB Im signal with a quadrature intermediate-frequency cosine wave (an IF cosine wave) to obtain a first IF I signal and a first IF Q signal;
• a first beamformer coupled with an output of the first second-level modulator and configured to receive the first IF I signal and the first IF Q signal and, for one or more antenna channels, to modify a phase and/or an amplitude of the first IF I signal and/or the first IF Q signal to obtain a first directed IF I signal and/or a first directed IF Q signal;
• and
• two or more antenna channel modules, each configured to drive an antenna and each including:
• a first second-level demodulator with two inputs both coupled with a single output of the first beamformer and configured to receive one of the first directed IF I signal and the first directed IF Q signal and to demodulate this into a first directed BB Re signal and a first directed BB Im signal;
• a first DAC coupled with an output of the first second-level demodulator and configured to convert the first directed BB Re signal to an analog Re signal;
• a second DAC coupled with an output of the first second-level demodulator and configured to convert the first directed BB Im signal to an analog Im signal;
• and
• an oscillator coupled with the first DAC producing an RF I signal and an RF Q signal, a first mixer coupled with the first DAC and the oscillator, a second mixer coupled with the second DAC and the oscillator, an adder coupled with the first mixer and the second mixer, and a power amplifier coupled with the adder.