Apple inc. (20240313789). SYSTEMS AND METHODS FOR PLL GAIN CALIBRATION simplified abstract
Contents
SYSTEMS AND METHODS FOR PLL GAIN CALIBRATION
Organization Name
Inventor(s)
Karim M. Megawer of San Diego CA (US)
Jongmin Park of San Diego CA (US)
SYSTEMS AND METHODS FOR PLL GAIN CALIBRATION - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240313789 titled 'SYSTEMS AND METHODS FOR PLL GAIN CALIBRATION
Simplified Explanation: This patent application focuses on improving the performance of Phase-Locked Loops (PLLs) by implementing gain calibration to control loop gain variations caused by process, voltage, and temperature changes.
- The innovation involves a PLL with a loop gain function that is dependent on an input phase offset time, ensuring consistent phase noise performance across PVT variations.
- By establishing a relationship between PLL loop gain and phase offset, the system can detect and calibrate phase offset to enhance loop gain calibration without the complexity of directly measuring loop gain.
Key Features and Innovation:
- Implementation of gain calibration loop to control PLL loop gain variations.
- PLL loop gain function based on input phase offset time for consistent phase noise performance.
- Relationship between PLL loop gain and phase offset for enhanced calibration without direct measurement.
Potential Applications: This technology can be applied in various systems requiring precise frequency and phase control, such as communication systems, radar systems, and frequency synthesizers.
Problems Solved:
- Addressing PLL loop gain variations due to PVT changes.
- Enhancing phase noise performance across different environmental conditions.
Benefits:
- Improved performance and stability of PLLs.
- Simplified calibration process without the need for direct loop gain measurement.
Commercial Applications: Potential commercial applications include telecommunications equipment, test and measurement devices, and aerospace systems requiring accurate frequency and phase synchronization.
Questions about PLL Gain Calibration: 1. How does PLL gain calibration impact the overall performance of communication systems? 2. What are the key advantages of using phase offset time to control PLL loop gain variations?
Frequently Updated Research: Ongoing research in PLL design and calibration techniques may provide further insights into optimizing loop gain control for improved system performance.
Original Abstract Submitted
this disclosure is directed to plls, and, in particular, to enhancing pll performance via gain calibration. pll loop gain may vary with respect to process, voltage, and temperature (pvt) variation. to control the pll loop gain, a gain calibration loop may be implemented. however, calibrating the loop gain by directly measuring the loop gain may be disadvantageous. to reduce or eliminate pll loop gain variation due to pvt variation, a pll having a loop gain function that is a function of an input phase offset time with a phase noise performance that remains consistent across pvt variations is disclosed. by determining a relationship between pll loop gain and phase offset, detecting and calibrating phase offset may result in enhanced calibration of the pll loop gain, while avoiding the additional difficulty and complexity associated with directly measuring loop gain of a pll.
