CA2250330C - Balanced transversal i,q filters for quadrature modulators - Google Patents
Balanced transversal i,q filters for quadrature modulators Download PDFInfo
- Publication number
- CA2250330C CA2250330C CA002250330A CA2250330A CA2250330C CA 2250330 C CA2250330 C CA 2250330C CA 002250330 A CA002250330 A CA 002250330A CA 2250330 A CA2250330 A CA 2250330A CA 2250330 C CA2250330 C CA 2250330C
- Authority
- CA
- Canada
- Prior art keywords
- signal
- output
- outputs
- balanced
- weighting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
- H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
- H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
- H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
- H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
- H04L27/2064—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers using microwave technology
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Nonlinear Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62084396A | 1996-03-20 | 1996-03-20 | |
| US08/620,843 | 1996-03-20 | ||
| PCT/US1997/003803 WO1997035411A1 (en) | 1996-03-20 | 1997-03-13 | Balanced transversal i,q filters for quadrature modulators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2250330A1 CA2250330A1 (en) | 1997-09-25 |
| CA2250330C true CA2250330C (en) | 2004-11-23 |
Family
ID=24487644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002250330A Expired - Fee Related CA2250330C (en) | 1996-03-20 | 1997-03-13 | Balanced transversal i,q filters for quadrature modulators |
Country Status (12)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832930A (zh) * | 2018-04-29 | 2018-11-16 | 浙江工规科技有限公司 | 一种dac重构滤波器 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5278492A (en) * | 1992-01-15 | 1994-01-11 | Henkel Corporation | Controllable AC power supply for an ozonator |
| ZA93290B (en) * | 1992-01-16 | 1993-11-22 | Qualcomm Inc | Method and apparatus for the formatting of data for transmission |
| US5530722A (en) * | 1992-10-27 | 1996-06-25 | Ericsson Ge Mobile Communications Inc. | Quadrature modulator with integrated distributed RC filters |
-
1997
- 1997-03-13 CA CA002250330A patent/CA2250330C/en not_active Expired - Fee Related
- 1997-03-13 EP EP97914988A patent/EP0888681B1/en not_active Expired - Lifetime
- 1997-03-13 KR KR10-1998-0707474A patent/KR100462139B1/ko not_active IP Right Cessation
- 1997-03-13 JP JP53352997A patent/JP3758681B2/ja not_active Expired - Fee Related
- 1997-03-13 AU AU22046/97A patent/AU712678B2/en not_active Ceased
- 1997-03-13 DE DE69722390T patent/DE69722390T2/de not_active Expired - Lifetime
- 1997-03-13 CN CNB971948011A patent/CN1147098C/zh not_active Expired - Fee Related
- 1997-03-13 WO PCT/US1997/003803 patent/WO1997035411A1/en active IP Right Grant
- 1997-03-14 TW TW086103205A patent/TW317680B/zh not_active IP Right Cessation
- 1997-03-20 CO CO97015007A patent/CO4600652A1/es unknown
- 1997-03-20 AR ARP970101109A patent/AR006980A1/es unknown
- 1997-03-20 ID IDP970911A patent/ID16560A/id unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU2204697A (en) | 1997-10-10 |
| DE69722390T2 (de) | 2004-04-01 |
| AR006980A1 (es) | 1999-10-13 |
| TW317680B (US06580902-20030617-M00005.png) | 1997-10-11 |
| EP0888681A1 (en) | 1999-01-07 |
| ID16560A (id) | 1997-10-16 |
| EP0888681B1 (en) | 2003-05-28 |
| KR20000064738A (ko) | 2000-11-06 |
| JP3758681B2 (ja) | 2006-03-22 |
| DE69722390D1 (de) | 2003-07-03 |
| CO4600652A1 (es) | 1998-05-08 |
| KR100462139B1 (ko) | 2005-02-28 |
| WO1997035411A1 (en) | 1997-09-25 |
| JP2000507410A (ja) | 2000-06-13 |
| CA2250330A1 (en) | 1997-09-25 |
| AU712678B2 (en) | 1999-11-11 |
| CN1219315A (zh) | 1999-06-09 |
| CN1147098C (zh) | 2004-04-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20170313 |
|
| MKLA | Lapsed |
Effective date: 20170313 |