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, relative to a dipole axis, 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 dipole axis 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.