18145423. Receiver Having Passive Mixer with High-Order Filter simplified abstract (Apple Inc.)
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 18145423 titled 'Receiver Having Passive Mixer with High-Order Filter
The abstract describes an electronic device with a receiver that utilizes radio-frequency signals and a passive voltage mode mixer coupled to a passive second-or-higher order switched-capacitor filter with complex poles. Clocking circuitry controls the filter, provides local oscillator signals to the mixer, and synchronizes timing with the local oscillator signals.
- Receiver with passive voltage mode mixer and switched-capacitor filter
- Clocking circuitry controls the filter states and provides local oscillator signals
- Local oscillator signals are synchronized with the filter states
- Filter states are cycled through by the control signal
- Local oscillator signals are pulsed once while the filter is in each state
Potential Applications: - Wireless communication devices - Radio frequency signal processing systems - Radar systems
Problems Solved: - Efficient processing of radio-frequency signals - Synchronization of local oscillator signals with filter states
Benefits: - Improved signal processing efficiency - Enhanced synchronization of components - Increased performance in radio frequency applications
Commercial Applications: Title: Advanced Radio Frequency Signal Processing Device This technology can be used in the development of advanced wireless communication devices, radar systems, and other radio frequency signal processing applications. It has the potential to improve the efficiency and performance of such systems, making it a valuable tool for companies in the telecommunications and defense industries.
Questions about the technology: 1. How does the clocking circuitry control the filter states and provide synchronization with the local oscillator signals? - The clocking circuitry generates a control signal that cycles the filter through different states and pulses the local oscillator signals once while the filter is in each state, ensuring synchronization. 2. What are the potential advantages of using a passive voltage mode mixer coupled to a passive second-or-higher order switched-capacitor filter with complex poles in a receiver? - The use of this configuration can lead to improved signal processing efficiency and enhanced synchronization in radio frequency 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.
