公开(公告)号：US20240098668A1

公开(公告)日：2024-03-21

申请号：US17940483

申请日：2022-09-08

Applicant: Silicon Laboratories Inc.

Inventor： Tuomas Hanninen ,  Sebastien Cerdan

IPC: H04W56/00

CPC classification number: H04W56/004

Abstract: A method for operating a wireless communications device having a low energy mode of operation and a second mode of operation includes providing a first clock signal and a second clock signal in the second mode of operation. The first clock signal has a first frequency within a first frequency offset range. The second clock signal has a second frequency within a second frequency offset range. The first frequency is lower than the second frequency, and the first frequency offset range is greater than the second frequency offset range. The method includes generating a calibrated version of the first clock signal in the second mode of operation using a measurement of the first clock signal measured using a timer controlled by the second clock signal. The method includes using the calibrated version of the first clock signal in the low energy mode while the second clock signal is disabled.

公开(公告)号：US20250007167A1

公开(公告)日：2025-01-02

申请号：US18215288

申请日：2023-06-28

Applicant: Silicon Laboratories Inc.

Inventor： Tuomas Hanninen ,  Attila Zolomy

IPC: H01Q9/04 ,  H01Q5/49 ,  H01Q9/30

Abstract: A dual band antenna structure is disclosed. The dual band antenna structure utilizes features from loop ground edge radiating antennas and inverted-F antennas to create an antenna that has two resonance frequencies. The dual band antenna structure includes a loop ground edge radiating antenna, which has a first resonance frequency. A monopole branch is also located at the end of the feeding trace to provide a second resonance frequency. The dual band antenna structure is useful for network devices that operate at multiple frequencies, such as those using the WiFi/BLE/IEEE802.15.4 protocols.