SE0004481D0 - A method and a device for tuning a cavity channel filter combiner - Google Patents
A method and a device for tuning a cavity channel filter combinerInfo
- Publication number
- SE0004481D0 SE0004481D0 SE0004481A SE0004481A SE0004481D0 SE 0004481 D0 SE0004481 D0 SE 0004481D0 SE 0004481 A SE0004481 A SE 0004481A SE 0004481 A SE0004481 A SE 0004481A SE 0004481 D0 SE0004481 D0 SE 0004481D0
- Authority
- SE
- Sweden
- Prior art keywords
- combiner
- signal
- filter
- tuning
- transmitter
- Prior art date
Links
Landscapes
- Transmitters (AREA)
Abstract
A method and an apparatus for transmitting plural signals over a single antenna (108) in a radio station comprising a combiner (102) with tuneable bandpass combiner filters, wherein each combiner filter (106) is used for filtering a transmitter signal. A modulation accuracy degradation is measured of the transmitter signal. The combiner filter is tuned based on the measured modulation accuracy degradation. The transmitter signal may also be prefiltered by using filter parameters corresponding to the characteristics of a transmitter chain for the signal. In this way, the combiner filter (106) can be tuned with high accuracy and signal distortion is reduced, thereby enabling the use of high modulation forms and/or a narrow channel spacing in the radio station.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0004481A SE0004481D0 (en) | 2000-12-05 | 2000-12-05 | A method and a device for tuning a cavity channel filter combiner |
AU2002223176A AU2002223176A1 (en) | 2000-12-05 | 2001-12-05 | A method and apparatus for tuning a combiner filter |
PCT/SE2001/002686 WO2002047195A1 (en) | 2000-12-05 | 2001-12-05 | A method and apparatus for tuning a combiner filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0004481A SE0004481D0 (en) | 2000-12-05 | 2000-12-05 | A method and a device for tuning a cavity channel filter combiner |
Publications (1)
Publication Number | Publication Date |
---|---|
SE0004481D0 true SE0004481D0 (en) | 2000-12-05 |
Family
ID=20282096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0004481A SE0004481D0 (en) | 2000-12-05 | 2000-12-05 | A method and a device for tuning a cavity channel filter combiner |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2002223176A1 (en) |
SE (1) | SE0004481D0 (en) |
WO (1) | WO2002047195A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8436693B2 (en) | 2006-08-23 | 2013-05-07 | St-Ericsson Sa | Filter-tracking and control method |
GB2444786B (en) * | 2006-12-15 | 2011-10-05 | Isotek Electronics Ltd | A band combining filter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5187719A (en) * | 1989-01-13 | 1993-02-16 | Hewlett-Packard Company | Method and apparatus for measuring modulation accuracy |
SE467717B (en) * | 1990-12-21 | 1992-08-31 | Ericsson Telefon Ab L M | PROCEDURE FOR FINISHING THE RESONANCE FREQUENCY FOR A FILTER IN A COMBINER |
FI94690C (en) * | 1992-12-30 | 1995-10-10 | Nokia Telecommunications Oy | Apparatus for tuning a combiner filter and a method for performing a separation measurement |
SE0000585D0 (en) * | 2000-02-23 | 2000-02-23 | Ericsson Telefon Ab L M | Tuning method and system |
-
2000
- 2000-12-05 SE SE0004481A patent/SE0004481D0/en unknown
-
2001
- 2001-12-05 AU AU2002223176A patent/AU2002223176A1/en not_active Withdrawn
- 2001-12-05 WO PCT/SE2001/002686 patent/WO2002047195A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
AU2002223176A1 (en) | 2002-06-18 |
WO2002047195A1 (en) | 2002-06-13 |
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