SE0402289D0 - predistorter - Google Patents

predistorter

Info

Publication number
SE0402289D0
SE0402289D0 SE0402289A SE0402289A SE0402289D0 SE 0402289 D0 SE0402289 D0 SE 0402289D0 SE 0402289 A SE0402289 A SE 0402289A SE 0402289 A SE0402289 A SE 0402289A SE 0402289 D0 SE0402289 D0 SE 0402289D0
Authority
SE
Sweden
Prior art keywords
nonlinear
adjusting
impedance
circuit
predistorter
Prior art date
Application number
SE0402289A
Other languages
Swedish (sv)
Inventor
Gunnar Persson
Gerlach Spee
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 SE0402289A priority Critical patent/SE0402289D0/en
Publication of SE0402289D0 publication Critical patent/SE0402289D0/en
Priority to SE0402524A priority patent/SE0402524D0/en
Priority to CN200580031365XA priority patent/CN101036289B/en
Priority to DE602005027715T priority patent/DE602005027715D1/en
Priority to US11/663,341 priority patent/US7420416B2/en
Priority to AT05784881T priority patent/ATE507612T1/en
Priority to PCT/SE2005/001381 priority patent/WO2006033622A1/en
Priority to EP05784881A priority patent/EP1794879B1/en

Links

Abstract

The present invention relates to an analog predistorter (100) having a tunable amplitude (60) and/ or phase (80) expansion. The predistorter (100) includes a coupler (110) having an input port (112), an output port (114), a first (116) and a second (118) coupled port separated by 90 degrees. A first compensation circuit (120A) is connected to the first coupled port (116) and comprises a first combination (130A) of linear (132A) and nonlinear (131A) circuit elements and a first impedance adjusting unit (140A) for adjusting the impedance seen by the nonlinear circuit element (131A). A second compensation circuit (120B) is connected to the second coupled port (118) and comprises a second combination (130B) of linear (132B) and nonlinear (131B) circuit elements a second impedance adjusting unit (140B) for adjusting the impedance seen by said nonlinear circuit element (131B). By adjusting the impedances seen by the nonlinear circuit elements (13 IA, 131B) the amplitude (60) and/or phase (80) expansion of the predisorter (100) are tuned.
SE0402289A 2004-09-21 2004-09-21 predistorter SE0402289D0 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
SE0402289A SE0402289D0 (en) 2004-09-21 2004-09-21 predistorter
SE0402524A SE0402524D0 (en) 2004-09-21 2004-10-15 Tunable predistors
CN200580031365XA CN101036289B (en) 2004-09-21 2005-09-20 Analog predistorter and its regulation method and method for compensating signal change
DE602005027715T DE602005027715D1 (en) 2004-09-21 2005-09-20 ADJUSTABLE FORECASTER
US11/663,341 US7420416B2 (en) 2004-09-21 2005-09-20 Tunable predistorter
AT05784881T ATE507612T1 (en) 2004-09-21 2005-09-20 ADJUSTABLE PREDISTORER
PCT/SE2005/001381 WO2006033622A1 (en) 2004-09-21 2005-09-20 Tunable predistorter
EP05784881A EP1794879B1 (en) 2004-09-21 2005-09-20 Tunable predistorter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0402289A SE0402289D0 (en) 2004-09-21 2004-09-21 predistorter

Publications (1)

Publication Number Publication Date
SE0402289D0 true SE0402289D0 (en) 2004-09-21

Family

ID=33308799

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0402289A SE0402289D0 (en) 2004-09-21 2004-09-21 predistorter

Country Status (2)

Country Link
CN (1) CN101036289B (en)
SE (1) SE0402289D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104167994B (en) * 2014-08-26 2017-02-15 电子科技大学 Amplitude and phase tunable type pre-distortion linearizer
CN106982181A (en) * 2016-01-18 2017-07-25 中兴通讯股份有限公司 Coupling network, power amplification device and communication terminal
CN113242023B (en) * 2021-03-30 2022-07-26 宁波大学 Analog predistorter of field effect transistor series connection reflection type Schottky diode
CN113659938B (en) * 2021-08-24 2023-05-12 电子科技大学 Analog predistorter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5146177A (en) * 1991-08-30 1992-09-08 General Electric Co. Balanced reflective nonlinear processor using FETs
CN1204898A (en) * 1997-06-30 1999-01-13 哈里公司 Apparatus with reduced A/D dynamic range requirement in compensating feedback system
US6326843B1 (en) * 2000-02-25 2001-12-04 Telefonaktiebolaget Lm Ericsson (Publ) Analog reflective predistorter for power amplifiers

Also Published As

Publication number Publication date
CN101036289A (en) 2007-09-12
CN101036289B (en) 2010-05-26

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