Frequency matched sub-sample feedforward modulation in amplitute level control loop
US-12316324-B2 · May 27, 2025 · US
Apparatus and method for phase locked loop bandwidth expansion
US9590645B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9590645-B2 |
| Application number | US-201514816448-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 3, 2015 |
| Priority date | Feb 21, 2012 |
| Publication date | Mar 7, 2017 |
| Grant date | Mar 7, 2017 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An apparatus for PLL bandwidth expansion including a compensation filter and a phase locked loop, where the compensation filter is programmed with a compensation function derived based on programmable coefficients and parameters of a transmitting device, a frequency response of the phase locked loop, and a wanted frequency response.
First claim
Opening claim text (preview).
What is claimed is: 1. An apparatus for phase locked loop (“PLL”) bandwidth expansion comprising: a transmitting device including a programmable hardware compensation filter configured to receive a transmitted signal and output a filtered signal, and a PLL circuit installed in front of the compensation filter and configured to receive the filtered signal and output a modulated carrier signal, the programmable hardware compensation filter configured to be programmed with a compensation function having filter coefficients, wherein the filter coefficients are determined from programmable coefficients and parameters stored on the transmitting device, and wherein a function of the programmable hardware compensation filter (“Fcomp(s)”) is: Fcomp ( s ) = y 0 · ( s 5 + s 4 · x 4 + s 3 · x 3 + s 2 · x 2 + s · x 1 + x 0 ) x 1 · ( s 5 + s 4 · z 4 + s 3 · z 3 + s 2 · z 2 + s · z 1 + z 0 ) , where x 0 = a · K ϕ A · b · w n 2 · K vco N x 1 = K ϕ A · b · w n 2 · K vco N x 2 = w n 2 · b , x 3 = w n 2 + 2 ξ · w n · b x 4 = w n 2 + 2 ξ
Assignees
Inventors
Classifications
Details of the phase-locked loop · CPC title
- H03C3/08Primary
Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator · CPC title
- H03L7/10Primary
for assuring initial synchronisation or for broadening the capture range · CPC title
- H03C3/0908Primary
using a phase locked loop · CPC title
modulating the reference clock · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9590645B2 cover?
- An apparatus for PLL bandwidth expansion including a compensation filter and a phase locked loop, where the compensation filter is programmed with a compensation function derived based on programmable coefficients and parameters of a transmitting device, a frequency response of the phase locked loop, and a wanted frequency response.
- Who is the assignee on this patent?
- Hughes Network Systems Llc, Hughes Networks Systems Llc
- What technology area does this patent fall under?
- Primary CPC classification H03C3/08. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 07 2017 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).