Low-power high-performance clock path architecture
US-2024393824-A1 · Nov 28, 2024 · US
NFC device with PLL controlled active load modulation
US8934836B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8934836-B2 |
| Application number | US-201213535874-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 28, 2012 |
| Priority date | Jun 28, 2012 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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A wireless communication device for communicating in the near-field via active load modulation. The device including an antenna configured to receive a magnetic field, a recovery device configured to recover a clock from the magnetic field, and a multiplexer configured to receive the recovered clock and a reference clock, and to output one of the recovered clock and the reference clock based on a current operational state of the wireless communication device, The wireless communication device further including a shunt regulator configured to produce the active load modulation by modulating an impedance of the wireless communication device, a phase-locked loop (PLL) configured to receive one of the recovered clock and the reference clock and to utilize the received clock to control the active load modulation, and a driver configured to contribute to the active load modulation by adjusting an amplitude of a voltage across the antenna.
First claim
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What is claimed is: 1. A wireless communication device, comprising: an antenna configured to receive a magnetic field; a recovery device configured to recover a clock from the magnetic field; a multiplexer configured to receive the recovered clock and a reference clock, and to output one of the recovered clock and the reference clock based on a current operational state of the wireless communication device; a shunt regulator configured to produce an active load modulation by…
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- What does patent US8934836B2 cover?
- A wireless communication device for communicating in the near-field via active load modulation. The device including an antenna configured to receive a magnetic field, a recovery device configured to recover a clock from the magnetic field, and a multiplexer configured to receive the recovered clock and a reference clock, and to output one of the recovered clock and the reference clock based on…
- Who is the assignee on this patent?
- Lefley Alastair, Broadcom Corp
- What technology area does this patent fall under?
- Primary CPC classification H03L7/08. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).