A tissue stimulation system, comprising: • a wireless tissue stimulator configured to be implanted within a body of a subject and adjacent a tissue within the body, the wireless tissue stimulator comprising a first antenna configured to receive, via electrical radiative coupling, an input signal carrying electrical energy, and the wireless tissue stimulator configured to: - create one or more electrical pulses for stimulating the tissue using the electrical energy in the input signal, - apply the one or more electrical pulses to the tissue, - store energy from the electrical energy carried by the input signal on the wireless tissue stimulator, and - transmit a feedback signal using the energy stored on the wireless tissue stimulator, the feedback signal comprising: a stimulus portion indicating measured parameters of the one or more electrical pulses as applied to the tissue, and a limit portion indicating that a characteristic of the one or more electrical pulses has been limited to affect an electrical parameter at the tissue such that a charge per phase resulting from the one or more electrical pulses has not exceeded a safe charge limit; • a second antenna configured to be positioned external to the body of the subject, to send the input signal to the first antenna via electrical radiative coupling, and to receive the feedback signal from the wireless tissue stimulator; and • a control module configured to monitor the feedback signal, the control module comprising one or more circuits configured to: generate the input signal and send the input signal to the second antenna, and attenuate the input signal based on the feedback signal to maintain the electrical parameter at the tissue below a threshold level. • a wireless tissue stimulator configured to be implanted within a body of a subject and adjacent a tissue within the body, the wireless tissue stimulator comprising a first antenna configured to receive, via electrical radiative coupling, an input signal carrying electrical energy, and the wireless tissue stimulator configured to: - create one or more electrical pulses for stimulating the tissue using the electrical energy in the input signal, - apply the one or more electrical pulses to the tissue, - store energy from the electrical energy carried by the input signal on the wireless tissue stimulator, and - transmit a feedback signal using the energy stored on the wireless tissue stimulator, the feedback signal comprising: a stimulus portion indicating measured parameters of the one or more electrical pulses as applied to the tissue, and a limit portion indicating that a characteristic of the one or more electrical pulses has been limited to affect an electrical parameter at the tissue such that a charge per phase resulting from the one or more electrical pulses has not exceeded a safe charge limit; - create one or more electrical pulses for stimulating the tissue using the electrical energy in the input signal, - apply the one or more electrical pulses to the tissue, - store energy from the electrical energy carried by the input signal on the wireless tissue stimulator, and - transmit a feedback signal using the energy stored on the wireless tissue stimulator, the feedback signal comprising: a stimulus portion indicating measured parameters of the one or more electrical pulses as applied to the tissue, and a limit portion indicating that a characteristic of the one or more electrical pulses has been limited to affect an electrical parameter at the tissue such that a charge per phase resulting from the one or more electrical pulses has not exceeded a safe charge limit; a stimulus portion indicating measured parameters of the one or more electrical pulses as applied to the tissue, and a limit portion indicating that a characteristic of the one or more electrical pulses has been limited to affect an electrical parameter at the tissue such that a charge per phase resulting from the one or more electrical pulses has not exceeded a safe charge limit; • a second antenna configured to be positioned external to the body of the subject, to send the input signal to the first antenna via electrical radiative coupling, and to receive the feedback signal from the wireless tissue stimulator; and • a control module configured to monitor the feedback signal, the control module comprising one or more circuits configured to: generate the input signal and send the input signal to the second antenna, and attenuate the input signal based on the feedback signal to maintain the electrical parameter at the tissue below a threshold level. generate the input signal and send the input signal to the second antenna, and attenuate the input signal based on the feedback signal to maintain the electrical parameter at the tissue below a threshold level.