The invention pertains to a Medical Implant Communication Service (MICS) band receiver, which integrates a mixer circuit and a low noise amplifier (LNA) stacked together and operating with a shared bias current. The system also includes an intermediate frequency (IF) filter and an IF amplifier that operates at multiple amplification levels to generate an IF signal. This design aims to minimize power consumption and reduce the physical size by eliminating the need for off-chip inductors.
Figure 1. Flowchart of technology
Traditional MICS band receivers in implantable medical devices have high power consumption, necessitating frequent battery replacements through surgeries, and utilize bulky off-chip inductors, leading to complex and unwieldy designs.
How this invention tackles it:
This invention addresses the problem by integrating a mixer circuit stacked over a low noise amplifier (LNA) that operates with a shared bias current, eliminating the need for off-chip inductors. This design significantly reduces power consumption and physical size. The inclusion of an intermediate frequency (IF) filter and a multi-level IF amplifier further enhances signal processing efficiency, thereby extending battery life and reducing the frequency of surgical interventions for battery replacements.
- Stacked design: The mixer circuit is stacked over the LNA, allowing both components to operate with the same bias current. This integration reduces the overall size and power consumption of the receiver, thereby enhancing battery life. The compact size and enhanced battery life improves patient comfort and reduces the need for frequent surgical interventions for battery replacements.
- Inductorless design: The invention eliminates the need for off-chip inductors, which are typically bulky and complex, leading to a more compact and simplified receiver.
- Double balanced mixer circuit: It utilizes a double balanced mixer circuit with multiple transistors to efficiently handle radio frequency (RF) currents and perform frequency translation, enhancing signal processing.
- Integrated IF filter and amplifier: The inclusion of a second-order RC low pass filter and a multi-level IF amplifier, which transitions from differential amplification to difference amplification, optimizes IF signal processing.
The prototype would include a compact MICS band receiver with the stacked LNA and mixer, integrated IF filter and amplifier stages, designed to fit within implantable medical devices while ensuring efficient power consumption and signal processing capabilities.
Experimentation and testing of the prototype has been completed successfully.
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The technology promises to significantly improve patient quality of life by extending the battery life of implantable medical devices, reducing the frequency of surgical interventions, and ensuring reliable real-time health monitoring. This can lead to better healthcare outcomes and potentially lower healthcare costs.
- Bioelectronics industry - implantable medical devices such as pacemakers, cardio-defibrillators, and cochlear implants
- Wireless healthcare monitoring systems
- Remote health data access and real-time health monitoring solutions
- Telemedicine industry
- Semiconductor industry
- Wearable technology industry
- Wireless communication industry
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