Industrial Research And Consultancy Centre
MedRadio Band OOK Transmitter
Abstract
  • Modern medical devices usually include some sort of wearable/implantable devices that uses an analog or digital circuit to enhance and amplify some sort of biological signal, like heartbeat or brainwaves, and emit to some outside receiver. Waterproofing and thermal stability become issues to be carefully dealt with as without appropriate housing these devices are not suitable for placement in living beings. 
  • The transmitter patented here comprises a Metal-Oxide semiconductor (MOS) based 4/16 Oscillator. The MOS based oscillator comprises an off-chip load tank with a radiating element.

Type of IP

Faculty

Category of Patent

Department

MedRadio Band OOK Transmitter
Societal Impact
  • Facilitates enhanced reliability and efficiency in wireless communication within the MedRadio band, ensuring clearer transmission for medical devices. 
  • Reduces interference with other communication devices, aligning with regulatory guidelines for spectrum usage in healthcare applications.
Salient technical features and Advantages of the Technology
  • Uses a compact MOS-based oscillator with efficient power reuse for transmitting signals. 
  • Incorporates a Surface Mount Device Inductor as a compact radiating element for signal transmission. 
  • Operates within a specific radio band (401MHz to 406MHz) ideal for short-range communication. 
  • Eliminates bulky antennas, enhancing portability in wearable health devices and implantable medical devices. 
  • Achieves low power consumption of 85 micro-watts at 1.2 volts, ensuring efficient energy use in wireless transmissions.
  • Uses a compact MOS-based oscillator with efficient power reuse for transmitting signals. 
  • Incorporates a Surface Mount Device Inductor as a compact radiating element for signal transmission. 
  • Operates within a specific radio band (401MHz to 406MHz) ideal for short-range communication. 
  • Eliminates bulky antennas, enhancing portability in wearable health devices and implantable medical devices. 
  • Achieves low power consumption of 85 micro-watts at 1.2 volts, ensuring efficient energy use in wireless transmissions.
Technology readiness level

5

Current Status of Technology

The proposed TX [transmitter] has been implemented in 180 nm mixed-mode CMOS technology. Measurements were done with a custom designed test chip. Measurement results show that in OOK mode the proposed TX achieves an energy efficiency of 0.36 nJ/bit. TX consumes an average power of 71 µW and radiates about -24 dBm power at 200 kb/s. Successful wireless communication of pseudo random bit sequence is also shown with the TX and a commercial off-the-shelf receiver at a data rate of 200 kb/s for a maximum communication distance of 2 m.

Relevant Industries

Medical device manufacturers, Wireless communication equipment manufacturers, Biomedical engineering firms

Applications or Domain
  • Makes for safer biosensors which are less prone to mishaps due to overheating. 
  • A greater range of wearable applications are possible now due to low power consumption and high data transfer rates.