WO2007074411A3 - Transmitter, telecommunication terminal and method using the transmitter - Google Patents

Transmitter, telecommunication terminal and method using the transmitter Download PDF

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Publication number
WO2007074411A3
WO2007074411A3 PCT/IB2006/054781 IB2006054781W WO2007074411A3 WO 2007074411 A3 WO2007074411 A3 WO 2007074411A3 IB 2006054781 W IB2006054781 W IB 2006054781W WO 2007074411 A3 WO2007074411 A3 WO 2007074411A3
Authority
WO
WIPO (PCT)
Prior art keywords
transmitter
frequency
signal
filter
mixer circuit
Prior art date
Application number
PCT/IB2006/054781
Other languages
French (fr)
Other versions
WO2007074411A2 (en
Inventor
Dominique Delbecq
Michel Germe
Guillaume L Lebailly
Nicolas L Lecacheur
Original Assignee
Nxp Bv
Dominique Delbecq
Michel Germe
Guillaume L Lebailly
Nicolas L Lecacheur
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 Nxp Bv, Dominique Delbecq, Michel Germe, Guillaume L Lebailly, Nicolas L Lecacheur filed Critical Nxp Bv
Publication of WO2007074411A2 publication Critical patent/WO2007074411A2/en
Publication of WO2007074411A3 publication Critical patent/WO2007074411A3/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/14—Balanced arrangements

Abstract

A transmitter comprising a quadrature mixer circuit (14) having at least two inputs (20, 22) for receiving a local oscillation signal and an input signal having their highest power peaks in a power density spectrum located at frequencies LO and IF, respectively, and at least one output (24) for providing an in-phase component Ims of a mixed signal, the mixed signal having its higher power peak in a power density spectrum located at frequency LO + IF where a component at frequency LO - IF is rejected. The transmitter further comprises a filter (16) for reducing a parasitic effect of the local oscillation harmonic frequency situated at 3*LO. The quadrature mixer circuit comprises a further output (26) for providing a quadrature-phase component Qms of the mixed signal, and wherein the filter is a complex filter connected to both quadrature mixer circuit outputs (24, 26) and having an output (90) for outputting the signal to be transmitted, the complex filter being adapted to discriminate positive frequencies from negative frequencies using both components Ims and Qms, and wherein the complex filter is set to specifically reject at least a negative frequency which is equal to -3*LO + n*IF, where n is an integer.
PCT/IB2006/054781 2005-12-26 2006-12-12 Transmitter, telecommunication terminal and method using the transmitter WO2007074411A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05301111 2005-12-26
EP05301111.0 2005-12-26

Publications (2)

Publication Number Publication Date
WO2007074411A2 WO2007074411A2 (en) 2007-07-05
WO2007074411A3 true WO2007074411A3 (en) 2007-09-27

Family

ID=38134268

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/054781 WO2007074411A2 (en) 2005-12-26 2006-12-12 Transmitter, telecommunication terminal and method using the transmitter

Country Status (1)

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WO (1) WO2007074411A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102268110B1 (en) * 2014-08-05 2021-06-22 삼성전자주식회사 Method and apparatus for modulating data and medium thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0216803A1 (en) * 1985-04-04 1987-04-08 Motorola Inc Digital zero-if selectivity section.
US5999804A (en) * 1997-03-20 1999-12-07 National Semiconductor Corporation Low noise quadrature mixer circuit
US20010016016A1 (en) * 1999-05-25 2001-08-23 Donald Brian Eidson Power amplification using a direct-upconverting quadrature mixer topology
EP1133051A1 (en) * 2000-03-08 2001-09-12 Nippon Telegraph and Telephone Corporation A mixer circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0216803A1 (en) * 1985-04-04 1987-04-08 Motorola Inc Digital zero-if selectivity section.
US5999804A (en) * 1997-03-20 1999-12-07 National Semiconductor Corporation Low noise quadrature mixer circuit
US20010016016A1 (en) * 1999-05-25 2001-08-23 Donald Brian Eidson Power amplification using a direct-upconverting quadrature mixer topology
EP1133051A1 (en) * 2000-03-08 2001-09-12 Nippon Telegraph and Telephone Corporation A mixer circuit

Also Published As

Publication number Publication date
WO2007074411A2 (en) 2007-07-05

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