Apple inc. (20240214018). Receiver Having Passive Mixer with High-Order Filter simplified abstract
Contents
Receiver Having Passive Mixer with High-Order Filter
Organization Name
Inventor(s)
Simone Gambini of San Francisco CA (US)
Receiver Having Passive Mixer with High-Order Filter - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240214018 titled 'Receiver Having Passive Mixer with High-Order Filter
Abstract: An electronic device may include a receiver that receives radio-frequency signals using an antenna. The receiver may include a passive voltage mode mixer coupled to a passive second-or-higher order switched-capacitor filter with complex poles. Clocking circuitry may provide a control signal to the filter to cycle the filter through a series of states, may provide first and second local oscillator (LO) signals to the mixer, and may synchronize timing of the control signal with the first and second LO signals. The first and second LO signals may have the same period but may be shifted in time by half the period. The period may be equal to the duration with which the filter is placed in each of the states. The clocking circuitry may pulse the first and second LO signals once while the filter is placed in each of the states.
Key Features and Innovation:
- Receiver with passive voltage mode mixer and switched-capacitor filter with complex poles.
- Clocking circuitry controls filter states and provides LO signals to the mixer.
- Synchronization of control signal with LO signals for efficient signal processing.
Potential Applications:
- Wireless communication devices
- Radio receivers
- Signal processing systems
Problems Solved:
- Efficient filtering of radio-frequency signals
- Synchronization of LO signals for improved performance
Benefits:
- Enhanced signal processing capabilities
- Improved receiver performance
- Reduced interference in radio-frequency reception
Commercial Applications:
- Mobile phones
- Satellite communication systems
- Radar systems
Prior Art: Prior research may include studies on passive mixer designs and switched-capacitor filters in radio receivers.
Frequently Updated Research: Ongoing research may focus on optimizing the clocking circuitry for even better performance in signal processing.
Questions about the technology: 1. How does the clocking circuitry improve the performance of the receiver? 2. What are the potential challenges in implementing this technology in real-world applications?
Original Abstract Submitted
an electronic device may include a receiver that receives radio-frequency signals using an antenna. the receiver may include a passive voltage mode mixer coupled to a passive second-or-higher order switched-capacitor filter with complex poles. clocking circuitry may provide a control signal to the filter to cycle the filter through a series of states, may provide first and second local oscillator (lo) signals to the mixer, and may synchronize timing of the control signal with the first and second lo signals. the first and second lo signals may have the same period but may be shifted in time by half the period. the period may be equal to the duration with which the filter is placed in each of the states. the clocking circuitry may pulse the first and second lo signals once while the filter is placed in each of the states.
