US6107877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Predistortion generator coupled with an RF amplifier
Assignee: Arris Technology Inc
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Filing: 1999-04-09
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Granted: 2000-08-22
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Expires: 2019-04-09
Abstract
Abstract An in-line distortion generator is coupled to an RF amplifier on a single PC board for producing an output signal of useful amplitude but with low composite triple beat and cross modulation distortions. The backplane under the section of the PC board upon which the distortion circuit resides is removed and the portion of the heat sink under the removed portion of the backplane is also removed. This eliminates any parasitic capacitances that could degrade the performance of the RF amplifier, thereby making the distortion circuit transparent to the RF amplifier. Furthermore, the layout of the predistortion circuitry has been specifically designed to enhance the performance of the circuitry without inducing any negative operating characteristics on the associated RF amplifier.
Inventors
- 👤 Philip Miguelez
- 👤 Rudolph Menna
- 👤 Shutong Zhou
- 👤 Timothy Cope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:30
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/52; H03F1/523; H03F1/32; H03F1/3241; H03F1/3276; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0237; H05K1/025; H05K1/0253; H05K2201/00; H05K2201/07; H05K2201/0776; H05K2201/0792; H05K2201/09; H05K2201/09209; H05K2201/0929; H05K2201/093; H05K2201/09318; H05K2201/09654; H05K2201/0969; H05K2201/09745; H05K2201/09818; H05K2201/09972; H05K3/00; H05K3/0058; H05K3/0061
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
92 words
A system for receiving an input RF signal and outputting an amplified RF signal comprising: a printed-circuit board having a first section electrically coupled via printed circuitry to a second section; a non-linear predistortion generator circuit defined in said first section for receiving said input RF signal and outputting a predistorted RF signal via said printed circuitry; and an RF amplifier circuit defined in said second section for receiving said predistorted signal via said printed circuitry and outputting said amplified RF signal; whereby the predistortion generator circuit corrects odd order phase distortion.
Claim 2
Independent Claim
92 words
A system for receiving an input RF signal and outputting an amplified RF signal comprising: a printed-circuit board having a first section electrically coupled via printed circuitry to a second section; a non-linear predistortion generator circuit defined in said first section for receiving said input RF signal and outputting a predistorted RF signal via said printed circuitry; and an RF amplifier circuit defined in said second section for receiving said predistorted signal via said printed circuitry and outputting said amplified RF signal; whereby the predistortion generator circuit corrects odd order phase distortion.
Claim 3
Dependent Claim
70 words
The system of claim 1, wherein all of the circuitry of said printed-circuit board is disposed on a first side, and further comprising a conductive backplane associated with said second section and disposed on a second side of said printed-circuit board, the conductive backplane being coextensive with said second section such that the backplane does not extend to any portion of said second side which is opposite said first section.
Claim 4
Dependent Claim
68 words
The system of claim 1, wherein all of the circuitry of said printed-circuit board is disposed on a first side, and further comprising a heatsink associated with said second section and disposed on a second side of said printed-circuit board, the heatsink being coextensive with said second section such that the heatsink does not extend to any portion of said second side which is opposite said first section.
Claim 5
Dependent Claim
40 words
The system of claim 1, wherein all of the circuitry of said printed-circuit board is disposed on a first side, and further comprising a heatsink associated with said second section and disposed on a second side of said printed-circuit board.
Claim 6
Dependent Claim
55 words
The system of claim 4, wherein said heatsink comprises first and second portions; whereby said first portion is coextensive with, and contacts, said second side of said printed-circuit board opposite said second section, and said second portion is coextensive with, but does not contact, said second side of said printed-circuit board opposite said first section.
Claim 7
Dependent Claim
58 words
The system of claim 1, wherein said printed-circuit board comprises first and second sides and further comprising a conductive backplane or said second side associated with said second section, the conductive backplane being coextensive with said second section such that the backplane does not extend to any portion of said second side which is opposite said first section.
Claim 8
Dependent Claim
24 words
The system of claim 1, wherein said printed-circuit board comprises first and second sides and further comprising a heatsink coextensive with said second section.
Claim 9
Dependent Claim
34 words
The system of claim 1, wherein said printed-circuit board comprises first and second sides and further comprising a heatsink associated with said second section and disposed on said second side of said printed-circuit board.
Claim 10
Dependent Claim
55 words
The system of claim 8, wherein said heatsink comprises first and second portions; whereby said first portion is coextensive with, and contacts, said second side of said printed-circuit board opposite said second section, and said second portion is coextensive with, but does not contact, said second side of said printed-circuit board opposite said first section.
Claim 11
Independent Claim
91 words
A system for receiving an input RF signal and outputting an amplified RF signal comprising: a printed-circuit board having a first section electrically coupled via printed circuitry to a second section; an RF amplifier circuit defined in said second section for receiving said input RF signal and outputting an uncorrected amplified RF signal via said printed circuitry; and a non-linear distortion generator circuit defined in said first section for receiving said uncorrected amplified RF signal and outputting said amplified RF signal; whereby the distortion generator circuit corrects odd order phase distortion.
Claim 12
Independent Claim
91 words
A system for receiving an input RF signal and outputting an amplified RF signal comprising: a printed-circuit board having a first section electrically coupled via printed circuitry to a second section; an RF amplifier circuit defined in said second section for receiving said input RF signal and outputting an uncorrected amplified RF signal via said printed circuitry; and a non-linear distortion generator circuit defined in said first section for receiving said uncorrected amplified RF signal and outputting said amplified RF signal; whereby the distortion generator circuit corrects odd order phase distortion.
Claim 13
Dependent Claim
70 words
The system of claim 10, wherein all of the circuitry of said printed-circuit board is disposed on a first side, and further comprising a conductive backplane associated with said second section and disposed on a second side of said printed-circuit board, the conductive backplane being coextensive with said second section such that the backplane does not extend to any portion of said second side which is opposite said first section.
Claim 14
Dependent Claim
68 words
The system of claim 10, wherein all of the circuitry of said printed-circuit board is disposed on a first side, and further comprising a heatsink associated with said second section and disposed on a second side of said printed-circuit board, the heatsink being coextensive with said second section such that the heatsink does not extend to any portion of said second side which is opposite said first section.
Claim 15
Dependent Claim
40 words
The system of claim 10, wherein all of the circuitry of said printed-circuit board is disposed on a first side, and further comprising a heatsink associated with said second section and disposed on a second side of said printed-circuit board.
Claim 16
Dependent Claim
55 words
The system of claim 13, wherein said heatsink comprises first and second portions; whereby said first portion is coextensive with, and contacts, said second side of said printed-circuit board opposite said second section, and said second portion is coextensive with, but does not contact, said second side of said printed-circuit board opposite said first section.
Claim 17
Dependent Claim
58 words
The system of claim 10, wherein said printed-circuit board comprises first and second sides and further comprising a conductive backplane on said second side associated with said second section, the conductive backplane being coextensive with said second section such that the backplane does not extend to any portion of said second side which is opposite said first section.
Claim 18
Dependent Claim
24 words
The system of claim 10, wherein said printed-circuit board comprises first and second sides and further comprising a heatsink coextensive with said second section.
Claim 19
Dependent Claim
34 words
The system of claim 10, wherein said printed-circuit board comprises first and second sides and further comprising a heatsink associated with said second section and disposed on said second side of said printed-circuit board.
Claim 20
Dependent Claim
55 words
The system of claim 17, wherein said heatsink comprises first and second portions; whereby said first portion is coextensive with, and contacts, said second side of said printed-circuit board opposite said second section, and said second portion is coextensive with, but does not contact, said second side of said printed-circuit board opposite said first section.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-22 | 2004-02-21 | 2004-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-22 | 2008-02-21 | 2008-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-22 | 2012-02-21 | 2012-08-22 | $7700.00 | Window Closed / Lapsed |