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 combiner

Info

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
Application number
SE0004481A
Other languages
Swedish (sv)
Inventor
Anders Granstroem
Niall Andrew Macmanus
Gunnar Johansson
Original Assignee
Ericsson Telefon Ab L M
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE0004481A priority Critical patent/SE0004481D0/en
Publication of SE0004481D0 publication Critical patent/SE0004481D0/en
Priority to AU2002223176A priority patent/AU2002223176A1/en
Priority to PCT/SE2001/002686 priority patent/WO2002047195A1/en

Links

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  • 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.
SE0004481A 2000-12-05 2000-12-05 A method and a device for tuning a cavity channel filter combiner SE0004481D0 (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101507107A (en) * 2006-08-23 2009-08-12 Nxp股份有限公司 Filter-tracking and control method
GB2444786B (en) * 2006-12-15 2011-10-05 Isotek Electronics Ltd A band combining filter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
AU2002223176A1 (en) 2002-06-18
WO2002047195A1 (en) 2002-06-13

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