HK1137865A1 - Broadband frequency synthesizer with elimination of low-frequency parasitic emissions - Google Patents
Broadband frequency synthesizer with elimination of low-frequency parasitic emissionsInfo
- Publication number
- HK1137865A1 HK1137865A1 HK10102414.2A HK10102414A HK1137865A1 HK 1137865 A1 HK1137865 A1 HK 1137865A1 HK 10102414 A HK10102414 A HK 10102414A HK 1137865 A1 HK1137865 A1 HK 1137865A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- frequency
- factors
- output signal
- elimination
- low
- Prior art date
Links
- 230000008030 elimination Effects 0.000 title 1
- 238000003379 elimination reaction Methods 0.000 title 1
- 230000003071 parasitic effect Effects 0.000 title 1
- 230000009977 dual effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
- H03L7/1974—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division
- H03L7/1976—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division using a phase accumulator for controlling the counter or frequency divider
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06122367A EP1914893A1 (fr) | 2006-10-16 | 2006-10-16 | Synthétiseur de fréquence à large bande à suppression d'émissions parasites basses fréquences |
PCT/EP2007/060505 WO2008046741A1 (fr) | 2006-10-16 | 2007-10-03 | Synthetiseur de frequence a large bande a suppression d'emissions parasites basses frequences |
Publications (1)
Publication Number | Publication Date |
---|---|
HK1137865A1 true HK1137865A1 (en) | 2010-08-06 |
Family
ID=37814257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK10102414.2A HK1137865A1 (en) | 2006-10-16 | 2010-03-08 | Broadband frequency synthesizer with elimination of low-frequency parasitic emissions |
Country Status (10)
Country | Link |
---|---|
US (1) | US7928805B2 (ko) |
EP (2) | EP1914893A1 (ko) |
JP (1) | JP4833340B2 (ko) |
KR (1) | KR101251708B1 (ko) |
CN (1) | CN101529725B (ko) |
AT (1) | ATE478475T1 (ko) |
DE (1) | DE602007008599D1 (ko) |
HK (1) | HK1137865A1 (ko) |
TW (1) | TWI439055B (ko) |
WO (1) | WO2008046741A1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101277496B (zh) * | 2008-05-12 | 2012-06-06 | 中兴通讯股份有限公司 | 一种双卡双模手机 |
TWI528725B (zh) | 2013-05-06 | 2016-04-01 | 國立中山大學 | 寬頻頻率合成器及其頻率合成方法 |
JP6439915B2 (ja) | 2014-09-12 | 2018-12-19 | セイコーエプソン株式会社 | フラクショナルn−pll回路、発振器、電子機器及び移動体 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2834923B2 (ja) * | 1991-11-26 | 1998-12-14 | 三洋電機株式会社 | 位相ロックループ及びこれを用いたインタフェース回路 |
CA2267496C (en) * | 1998-03-31 | 2003-03-11 | Philsar Electronics Inc. | A fractional-n divider using a delta-sigma modulator |
CA2233831A1 (en) * | 1998-03-31 | 1999-09-30 | Tom Riley | Digital-sigma fractional-n synthesizer |
JP3556917B2 (ja) * | 2001-03-23 | 2004-08-25 | 三菱電機株式会社 | 周波数シンセサイザ |
JP3548557B2 (ja) * | 2001-10-02 | 2004-07-28 | Nec化合物デバイス株式会社 | フラクショナルn周波数シンセサイザ |
EP1300950A1 (fr) | 2001-10-05 | 2003-04-09 | Asulab S.A. | Circuit compteur diviseur double mode à phase commutée pour un synthétiseur de fréquence |
US7231196B2 (en) * | 2001-12-12 | 2007-06-12 | Broadcom Corporation | Method and apparatus for fractional-N synthesis |
KR100468734B1 (ko) | 2002-06-11 | 2005-01-29 | 삼성전자주식회사 | 노이즈를 감소시키기 위한 주파수 합성 회로 |
JP2005033581A (ja) * | 2003-07-07 | 2005-02-03 | Mitsubishi Electric Corp | フラクショナル−n方式の位相同期ループ形周波数シンセサイザ |
-
2006
- 2006-10-16 EP EP06122367A patent/EP1914893A1/fr not_active Withdrawn
-
2007
- 2007-10-03 DE DE602007008599T patent/DE602007008599D1/de active Active
- 2007-10-03 JP JP2009532759A patent/JP4833340B2/ja active Active
- 2007-10-03 CN CN2007800385178A patent/CN101529725B/zh active Active
- 2007-10-03 WO PCT/EP2007/060505 patent/WO2008046741A1/fr active Application Filing
- 2007-10-03 US US12/445,916 patent/US7928805B2/en active Active
- 2007-10-03 KR KR1020097007098A patent/KR101251708B1/ko not_active IP Right Cessation
- 2007-10-03 EP EP07820882A patent/EP2080269B1/fr active Active
- 2007-10-03 AT AT07820882T patent/ATE478475T1/de not_active IP Right Cessation
- 2007-10-09 TW TW096137842A patent/TWI439055B/zh not_active IP Right Cessation
-
2010
- 2010-03-08 HK HK10102414.2A patent/HK1137865A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP4833340B2 (ja) | 2011-12-07 |
KR20090067157A (ko) | 2009-06-24 |
ATE478475T1 (de) | 2010-09-15 |
TWI439055B (zh) | 2014-05-21 |
WO2008046741A1 (fr) | 2008-04-24 |
TW200838149A (en) | 2008-09-16 |
DE602007008599D1 (de) | 2010-09-30 |
KR101251708B1 (ko) | 2013-04-05 |
CN101529725A (zh) | 2009-09-09 |
US20100295624A1 (en) | 2010-11-25 |
JP2010521075A (ja) | 2010-06-17 |
EP2080269B1 (fr) | 2010-08-18 |
EP2080269A1 (fr) | 2009-07-22 |
CN101529725B (zh) | 2012-10-03 |
US7928805B2 (en) | 2011-04-19 |
EP1914893A1 (fr) | 2008-04-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20231003 |