Dual-band transceiver with mutually coupled on-chip antennas for implantable/wearable devices

A system for monitoring a subject comprising:

• a dual-band implantable/wearable device including:
• a transceiver comprising:
• a first on-chip antenna;
• a second on-chip antenna, the first on-chip antenna and the second on-chip antenna being mutually coupled;
• a receiver including a dual receiver chain having a first receiver chain and a second receiver chain, the first receiver chain being in electrical communication with the first on-chip antenna and configured to operate within a first frequency band and the second receiver chain being in electrical communication with the second on-chip antenna and configured to operate within a second frequency band;
• a dual-band dual-port LC oscillator-based transmitter in electrical communication with the first on-chip antenna and the second on-chip antenna and configured transmit data within the first frequency band and/or the second frequency band;
• and
• a power management unit configured to supply power to the receiver and the dual-band dual-port LC oscillator-based transmitter;
• and
• a circuit board attached to the transceiver, the circuit board including any combination of capacitors, controller units, and a single battery;
• and
• at least one external device attached to the subject and in electrical communication with the dual-band implantable/wearable device, wherein the at least one external device is configured to request data using either the first frequency band or the second frequency band.

A dual-band implantable/wearable device including:

• a transceiver comprising:
• a first on-chip antenna;
• a second on-chip antenna, the first on-chip antenna and the second on-chip antenna being mutually coupled;
• a receiver including a dual receiver chain having a first receiver chain and a second receiver chain, the first receiver chain being in electrical communication with the first on-chip antenna and configured to operate within a first frequency band and the second receiver chain being in electrical communication with the second on-chip antenna and configured to operate within a second frequency band;
• a dual-band dual-port LC oscillator-based transmitter in electrical communication with the first on-chip antenna and the second on-chip antenna and configured transmit data within the first frequency band and/or the second frequency band;
• and
• a power management unit configured to supply power to the receiver and the dual-band dual-port LC oscillator-based transmitter;
• and
• a circuit board attached to the transceiver, the circuit board including any combination of external sensors, capacitors, controller units, and a single battery, wherein the dual-band dual-port LC oscillator-based transmitter directly feeds oscillator signals to the first on-chip antenna and the second on-chip antenna without using a separate power amplifier, thereby reducing both power consumption and chip area compared to a PA+oscillator architecture.