WO2001047108A3 - Error reduction in quadrature polyphase filters with low open loop gain operational amplifiers - Google Patents
Error reduction in quadrature polyphase filters with low open loop gain operational amplifiers Download PDFInfo
- Publication number
- WO2001047108A3 WO2001047108A3 PCT/US2000/034674 US0034674W WO0147108A3 WO 2001047108 A3 WO2001047108 A3 WO 2001047108A3 US 0034674 W US0034674 W US 0034674W WO 0147108 A3 WO0147108 A3 WO 0147108A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- open loop
- operational amplifiers
- loop gain
- low open
- polyphase filters
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/16—Networks for phase shifting
- H03H11/22—Networks for phase shifting providing two or more phase shifted output signals, e.g. n-phase output
Abstract
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60006164T DE60006164T2 (en) | 1999-12-21 | 2000-12-19 | ERROR REDUCTION IN SQUARE POLYPHASE FILTER WITH OPERATIONAL AMPLIFIER WITH LOW OPEN LOOP REINFORCEMENT |
EP00993559A EP1256167B1 (en) | 1999-12-21 | 2000-12-19 | Error reduction in quadrature polyphase filters with low open loop gain operational amplifiers |
JP2001547732A JP2003518796A (en) | 1999-12-21 | 2000-12-19 | Error reduced quadrature polyphase filter with low open loop gain operational amplifier |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/469,192 US6198345B1 (en) | 1999-12-21 | 1999-12-21 | Error reduction in quadrature polyphase filters with low open loop gain operational amplifiers |
US09/469,192 | 1999-12-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001047108A2 WO2001047108A2 (en) | 2001-06-28 |
WO2001047108A3 true WO2001047108A3 (en) | 2002-01-03 |
Family
ID=23862817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/034674 WO2001047108A2 (en) | 1999-12-21 | 2000-12-19 | Error reduction in quadrature polyphase filters with low open loop gain operational amplifiers |
Country Status (5)
Country | Link |
---|---|
US (1) | US6198345B1 (en) |
EP (1) | EP1256167B1 (en) |
JP (1) | JP2003518796A (en) |
DE (1) | DE60006164T2 (en) |
WO (1) | WO2001047108A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6987966B1 (en) * | 1999-10-21 | 2006-01-17 | Broadcom Corporation | Adaptive radio transceiver with polyphase calibration |
US8139160B2 (en) * | 2006-10-25 | 2012-03-20 | Mstar Semiconductor, Inc. | Television tuner with double quadrature mixing architecture |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4723318A (en) * | 1984-12-19 | 1988-02-02 | U.S. Philips Corporation | Active polyphase filters |
EP0344852A1 (en) * | 1988-06-02 | 1989-12-06 | Koninklijke Philips Electronics N.V. | Asymmetric polyphase filter |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100379048B1 (en) * | 1995-04-03 | 2003-06-11 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Quadrature Signal Conversion Device |
-
1999
- 1999-12-21 US US09/469,192 patent/US6198345B1/en not_active Expired - Lifetime
-
2000
- 2000-12-19 DE DE60006164T patent/DE60006164T2/en not_active Expired - Fee Related
- 2000-12-19 WO PCT/US2000/034674 patent/WO2001047108A2/en active IP Right Grant
- 2000-12-19 JP JP2001547732A patent/JP2003518796A/en active Pending
- 2000-12-19 EP EP00993559A patent/EP1256167B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4723318A (en) * | 1984-12-19 | 1988-02-02 | U.S. Philips Corporation | Active polyphase filters |
EP0344852A1 (en) * | 1988-06-02 | 1989-12-06 | Koninklijke Philips Electronics N.V. | Asymmetric polyphase filter |
Also Published As
Publication number | Publication date |
---|---|
DE60006164D1 (en) | 2003-11-27 |
EP1256167B1 (en) | 2003-10-22 |
DE60006164T2 (en) | 2004-07-22 |
EP1256167A2 (en) | 2002-11-13 |
US6198345B1 (en) | 2001-03-06 |
JP2003518796A (en) | 2003-06-10 |
WO2001047108A2 (en) | 2001-06-28 |
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