A system, comprising: - an implantable passive neural stimulation device (2022, 114) comprising one or more electrodes and an embedded dipole receiving antenna; - a controller module comprising: ∘ a storage device configured to store parameters defining a stimulation waveform and polarity assignments for the electrodes; ∘ a controller configured to generate, based on the stored parameters, an output signal that includes the stimulation waveform, wherein the controller is an RF pulse generator configured to transfer energy from one or more antennas to the implantable passive neural stimulation device via the output signal, wherein the output signal additionally includes the polarity assignments for the electrodes; ∘ a modulator configured to modulate a stimulus carrier signal with the output signal to generate a transmission signal, wherein the carrier signal has a frequency between about 800 MHz to 6 GHz; and ∘ the one or more antennas configured to transmit the transmission signal to the implantable passive neural stimulation device such that the implantable passive neural stimulation device is enabled to use energy in the transmission signal for operation, is enabled to set the polarities for the electrodes in the implantable passive neural stimulation device based on the encoded polarity assignments, is enabled to generate electrical pulses using the stimulation waveform and using the RF energy from the transmission signal, and is enabled to apply the electrical pulses to excitable tissue. - an implantable passive neural stimulation device (2022, 114) comprising one or more electrodes and an embedded dipole receiving antenna; - a controller module comprising: ∘ a storage device configured to store parameters defining a stimulation waveform and polarity assignments for the electrodes; ∘ a controller configured to generate, based on the stored parameters, an output signal that includes the stimulation waveform, wherein the controller is an RF pulse generator configured to transfer energy from one or more antennas to the implantable passive neural stimulation device via the output signal, wherein the output signal additionally includes the polarity assignments for the electrodes; ∘ a modulator configured to modulate a stimulus carrier signal with the output signal to generate a transmission signal, wherein the carrier signal has a frequency between about 800 MHz to 6 GHz; and ∘ the one or more antennas configured to transmit the transmission signal to the implantable passive neural stimulation device such that the implantable passive neural stimulation device is enabled to use energy in the transmission signal for operation, is enabled to set the polarities for the electrodes in the implantable passive neural stimulation device based on the encoded polarity assignments, is enabled to generate electrical pulses using the stimulation waveform and using the RF energy from the transmission signal, and is enabled to apply the electrical pulses to excitable tissue. ∘ a storage device configured to store parameters defining a stimulation waveform and polarity assignments for the electrodes; ∘ a controller configured to generate, based on the stored parameters, an output signal that includes the stimulation waveform, wherein the controller is an RF pulse generator configured to transfer energy from one or more antennas to the implantable passive neural stimulation device via the output signal, wherein the output signal additionally includes the polarity assignments for the electrodes; ∘ a modulator configured to modulate a stimulus carrier signal with the output signal to generate a transmission signal, wherein the carrier signal has a frequency between about 800 MHz to 6 GHz; and ∘ the one or more antennas configured to transmit the transmission signal to the implantable passive neural stimulation device such that the implantable passive neural stimulation device is enabled to use energy in the transmission signal for operation, is enabled to set the polarities for the electrodes in the implantable passive neural stimulation device based on the encoded polarity assignments, is enabled to generate electrical pulses using the stimulation waveform and using the RF energy from the transmission signal, and is enabled to apply the electrical pulses to excitable tissue.