Wearable respiration sensor and respiration monitoring system

A respiration monitoring sensor comprising:

• a wearable respiration sensor having a stretchable substrate configured to be worn around a user's torso;
• a dipole antenna having two flexible conductive elements extending in opposite directions from a center of the dipole antenna, relative to an axis of the dipole antenna intersecting the center, and being secured to the stretchable substrate, each one of the two flexible conductive elements having a proximate end near the center, a distal end away from the center, and a curved portion curving away from and back towards the axis of the dipole antenna between the proximate end and the distal end, in a plane of the stretchable substrate, the two flexible conductive elements being in a point reflection symmetry relative to one another relative to said center configured in a manner that, when the stretchable substrate is stretched by the user's respiration, the two distal ends are moved relative to one another;
• and a receiving port being electrically connected to the two flexible conductive elements;
• an interrogation system being communicatively coupled to the wearable respiration sensor, the interrogation system having an emitter configured to emit a signal for at least one of transmission and reception by the dipole antenna via the receiving port, and a receiver configured to, in response to said emission, receive a return signal varying as function of the stretching of the dipole antenna;
• and
• a controller being communicatively coupled to the interrogation system, the controller being configured to receive data concerning the return signal and to generate respiration data based on the received data.