TWI257205B - A filter for a modulator and methods thereof - Google Patents
A filter for a modulator and methods thereofInfo
- Publication number
- TWI257205B TWI257205B TW093111781A TW93111781A TWI257205B TW I257205 B TWI257205 B TW I257205B TW 093111781 A TW093111781 A TW 093111781A TW 93111781 A TW93111781 A TW 93111781A TW I257205 B TWI257205 B TW I257205B
- Authority
- TW
- Taiwan
- Prior art keywords
- filter
- fractional
- modulator
- pll
- exemplary embodiments
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
- H03C3/0925—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop applying frequency modulation at the divider in the feedback loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
- H03C3/0933—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop using fractional frequency division in the feedback loop of the phase locked loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/361—Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/331—Sigma delta modulation being used in an amplifying circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/734,117 US7912145B2 (en) | 2003-12-15 | 2003-12-15 | Filter for a modulator and methods thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200520405A TW200520405A (en) | 2005-06-16 |
TWI257205B true TWI257205B (en) | 2006-06-21 |
Family
ID=34653301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW093111781A TWI257205B (en) | 2003-12-15 | 2004-04-27 | A filter for a modulator and methods thereof |
Country Status (7)
Country | Link |
---|---|
US (1) | US7912145B2 (zh) |
EP (1) | EP1712049B1 (zh) |
AT (1) | ATE471021T1 (zh) |
DE (1) | DE602004027662D1 (zh) |
MY (1) | MY143340A (zh) |
TW (1) | TWI257205B (zh) |
WO (1) | WO2005062563A1 (zh) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7356315B2 (en) * | 2003-12-17 | 2008-04-08 | Intel Corporation | Outphasing modulators and methods of outphasing modulation |
EP1560390A1 (en) * | 2004-01-28 | 2005-08-03 | Alcatel | Adaptive control of the bandwidth of a carrier recovery loop in presence of local oscillator phase noise |
US7477686B2 (en) * | 2004-09-01 | 2009-01-13 | Intel Corporation | Apparatus and method of adaptive filter |
US7417513B2 (en) * | 2005-08-17 | 2008-08-26 | M/A-Com, Inc. | System and method for signal filtering in a phase-locked loop system |
US7680227B2 (en) * | 2006-03-02 | 2010-03-16 | Broadcom Corporation | Method and system for filter calibration using fractional-N frequency synthesized signals |
US7881399B2 (en) * | 2006-09-19 | 2011-02-01 | Panasonic Corporation | Transmission circuit and communication device |
US7869541B2 (en) * | 2006-11-17 | 2011-01-11 | Broadcom Corporation | Method and system for direct and polar modulation using a two input PLL |
US8862648B2 (en) | 2011-05-24 | 2014-10-14 | Taiwan Semiconductor Manufacturing Company, Ltd. | Fast filter calibration apparatus |
US9197175B2 (en) * | 2011-06-08 | 2015-11-24 | Broadcom Corporation | Methods and systems for pre-emphasis of an envelope tracking power amplifier supply voltage |
US8750364B2 (en) | 2011-12-31 | 2014-06-10 | St-Ericsson Sa | Interpolation of filter coefficients |
US8767876B2 (en) | 2011-12-31 | 2014-07-01 | St-Ericsson Sa | Filter offset compensation |
US10164529B2 (en) | 2015-09-16 | 2018-12-25 | Semiconductor Components Industries, Llc | Spread spectrum clock generator and method |
US10367543B2 (en) * | 2015-09-24 | 2019-07-30 | Semiconductor Components Industries, Llc | Calibration for spread spectrum clock generator and method therefor |
US10181862B1 (en) * | 2018-01-24 | 2019-01-15 | Raytheon Company | Parameterizable bandpass delta-sigma modulator |
US10680624B2 (en) | 2018-03-07 | 2020-06-09 | Analog Devices Global Unlimited Company | Phase-locked loop with filtered quantization noise |
US11784651B2 (en) * | 2021-10-27 | 2023-10-10 | Nxp B.V. | Circuitry and methods for fractional division of high-frequency clock signals |
CN115425969B (zh) * | 2022-09-14 | 2023-09-08 | 深圳市华智芯联科技有限公司 | 锁相环路的补偿滤波器设计方法、装置及计算机设备 |
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DE4306690A1 (de) * | 1993-03-04 | 1994-09-08 | Thomcast Ag Turgi | Modulationsverstärker für Rundfunksender |
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DE4420376C2 (de) * | 1993-09-22 | 1998-09-17 | Hewlett Packard Co | Quadraturmodulator |
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JP3444653B2 (ja) * | 1994-06-09 | 2003-09-08 | 三菱電機株式会社 | 電力増幅器 |
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US6985703B2 (en) * | 2001-10-04 | 2006-01-10 | Sequoia Corporation | Direct synthesis transmitter |
US20030125065A1 (en) * | 2001-12-27 | 2003-07-03 | Ilan Barak | Method and apparatus for generating an output signal |
US20030123566A1 (en) * | 2001-12-27 | 2003-07-03 | Jaime Hasson | Transmitter having a sigma-delta modulator with a non-uniform polar quantizer and methods thereof |
US6834084B2 (en) * | 2002-05-06 | 2004-12-21 | Rf Micro Devices Inc | Direct digital polar modulator |
US7340007B2 (en) * | 2003-09-16 | 2008-03-04 | M/A-Com, Inc. | Apparatus, methods and articles of manufacture for pre-emphasis filtering of a modulated signal |
US7522011B2 (en) * | 2005-08-15 | 2009-04-21 | Nokia Corporation | High pass modulation of a phase locked loop |
-
2003
- 2003-12-15 US US10/734,117 patent/US7912145B2/en active Active
-
2004
- 2004-04-22 AT AT04749927T patent/ATE471021T1/de not_active IP Right Cessation
- 2004-04-22 WO PCT/US2004/010959 patent/WO2005062563A1/en active Application Filing
- 2004-04-22 EP EP04749927A patent/EP1712049B1/en not_active Expired - Lifetime
- 2004-04-22 DE DE602004027662T patent/DE602004027662D1/de not_active Expired - Lifetime
- 2004-04-26 MY MYPI20041531A patent/MY143340A/en unknown
- 2004-04-27 TW TW093111781A patent/TWI257205B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TW200520405A (en) | 2005-06-16 |
ATE471021T1 (de) | 2010-06-15 |
WO2005062563A1 (en) | 2005-07-07 |
MY143340A (en) | 2011-04-29 |
DE602004027662D1 (de) | 2010-07-22 |
EP1712049B1 (en) | 2010-06-09 |
EP1712049A1 (en) | 2006-10-18 |
US20050129142A1 (en) | 2005-06-16 |
US7912145B2 (en) | 2011-03-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |