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公开(公告)号：AU724193B2
公开(公告)日：2000-09-14
申请号：AU1428797
申请日：1996-12-26
Applicant: QUALCOMM INC
Inventor： FUNK THOMAS J , MALDONADO DAVID
Abstract: A novel and improved antenna adapter for interfacing a portable radiotelephone 200 with test equipment is disclosed. In a preferred embodiment, the adapter assembly comprises an RF connector 104 at one end of an elongated conductor 102 which connects directly to the radiotelephone's 200 antenna port, replacing the normal antenna assembly. The elongated conductor 102 makes electrical contact with an external ground 204 of the battery charging ports at the bottom of the radiotelephone 200 at another end. The RF connector 104 may be impedance-matched to minimize RF signal attenuation when connected to the RF test equipment. In an exemplary embodiment, the RF connector 104 comprises a 50 OMEGA impedance-matched SMA connector.
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公开(公告)号：BR9713825A
公开(公告)日：2000-03-14
申请号：BR9713825
申请日：1997-11-25
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
Abstract: A dual-band antenna coupler for use in an adapter for portable radiotelephone. A plurality of curved bands of metal are positioned on a ground plane, with at least two of the plurality of curved bands of metal being electrically isolated from the ground plane so as to couple radio frequency (RF) signals to and from the antenna of the portable radiotelephone. The isolated curved bands of metal couple RF signals between the antenna of the portable radiotelephone and first and second matching circuits designed to match the portable radiotelephone antenna at each of the respective frequency bands. A selector switch coupled to the output of the matching circuits selects the appropriate matching circuit output for connection to an external antenna. The adapter also includes at least one ground pin mounted on the ground plane. When the portable radiotelephone is interfaced with the antenna coupler, the ground pin makes electrical contact with a ground reference connection on the portable radiotelephone.
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公开(公告)号：NO992711A
公开(公告)日：1999-08-02
申请号：NO992711
申请日：1999-06-03
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
CPC classification number: H01Q1/246 , H01Q1/242 , H01Q1/32 , H03H2007/386 , H04B1/18 , H04B1/3833 , H04B1/3877 , H04B1/406
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公开(公告)号：FI974398A
公开(公告)日：1998-01-29
申请号：FI974398
申请日：1997-12-02
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
Abstract: A novel and improved antenna coupler useful in an adapter for a portable radiotelephone. In a first embodiment, a plurality of curved bands of metal are positioned on a ground plane, with at least one of the plurality of curved bands of metal being electrically isolated from the ground plane so as to couple RF signals to and from the antenna of a portable telephone. At least one ground pin is also mounted on the ground plane. When a portable radiotelephone is interfaced with the antenna coupler, the at least one ground pin makes electrical contact with assembly screws or an external ground pad of a battery charging port on the portable radiotelephone. In a second embodiment, a coupling pin makes direct contact with an component of the RF chain of the portable radiotelephone. In a third embodiment, a helical coupler surrounds the antenna of the portable radiotelephone.
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公开(公告)号：CA2434048C
公开(公告)日：2011-01-04
申请号：CA2434048
申请日：2002-01-10
Applicant: QUALCOMM INC
Inventor： PETERZELL PAUL E , MALDONADO DAVID , GARD KEVIN , SEE PUAY HOE ANDREW , DUNWORTH JEREMY D , SAHOTA GURKANWAL KAMAL
Abstract: A system and method for generating a local oscillator (LO) frequency in a zero intermediate frequency (IF) receiver or transmitter is presented. A signal is received from a voltage controlled oscillator (VCO). The signal has a VCO frequency. The VCO frequency is divided by a number N to produce a signal having a divided-down frequency. The signal having the VCO frequency is then mixed with the signal having the divided-down frequency to produce an output signal having an output frequency. Local oscillator leakage is reduced. Thus, the receiver or transmitter may operate in multiple wireless communication bands and modes and meet the associated specifications.
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Patent Agency Ranking
公开(公告)号：AT381815T
公开(公告)日：2008-01-15
申请号：AT02713398
申请日：2002-01-10
Applicant: QUALCOMM INC
Inventor： PETERZELL PAUL , MALDONADO DAVID , GARD KEVIN , SEE PUAY HOE , DUNWORTH JEREMY , SAHOTA KAMAL
Abstract: A system and method for generating a local oscillator (LO) frequency in a zero intermediate frequency (IF) receiver or transmitter is presented. A signal is received from a voltage controlled oscillator (VCO). The signal has a VCO frequency. The VCO frequency is divided by a number N to produce a signal having a divided-down frequency. The signal having the VCO frequency is then mixed with the signal having the divided-down frequency to produce an output signal having an output frequency. Local oscillator leakage is reduced. Thus, the receiver or transmitter may operate in multiple wireless communication bands and modes and meet the associated specifications.
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公开(公告)号：ES2222510T3
公开(公告)日：2005-02-01
申请号：ES97917159
申请日：1997-04-01
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
Abstract: UN ACOPLADOR DE UNA ANTENA NUEVO Y MEJORADO (100) QUE ES UTIL EN UN ADAPTADOR PARA UN RADIOTELEFONO PORTATIL (200). EN UNA PRIMERA MATERIALIZACION DE LA IDEA, UNA PLURALIDAD DE BANDAS CURVADAS (204A-204C) DE METAL, ESTAN POSICIONADAS SOBRE UN PLANO DE TIERRA (102), CON POR LO MENOS UNA DE LAS BANDAS, DE LA PLURALIDAD DE BANDAS CURVADAS DE METAL (204A-204C), AISLADA ELECTRICAMENTE DEL PLANO DE TIERRA (102) PARA ACOPLAR LAS SEÑALES DE RF A Y DE LA ANTENA (204) DE UN TELEFONO PORTATIL (200). POR LO MENOS, UNA PATILLA DE TIERRA (206A, 206B, 206C) ESTA MONTADA TAMBIEN SOBRE EL PLANO DE TIERRA (102). CUANDO UN RADIOTELEFONO PORTATIL (200) SE ENCARA CON EL ACOPLADOR DE LA ANTENA (100) LA, POR LO MENOS UNA, PATILLA DE TIERRA (206A, 206B, 206C) HACE CONTACTO ELECTRICO CON LOS TORNILLOS DEL ENSAMBLADO (202A, 202B) O CON UNA ARANDELA DE TIERRA EXTERNA (208) DE UN PUERTO DE CARGA DE BATERIA DEL RADIOTELEFONO PORTATIL (200). EN UNA SEGUNDA MATERIALIZACION DE LA IDEA, UNA PATILLA DE ACOPLAMIENTO (404) HACE CONTACTO DIRECTO CON UN COMPONENTE DE LA CADENA DE RF DEL RADIOTELEFONO PORTATIL (200). EN UNA TERCERA MATERIALIZACION DE LA IDEA, UN ACOPLADOR HELICOIDAL (504) RODEA LA ANTENA (204) DEL RADIOTELEFONO PORTATIL (200).
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公开(公告)号：DE69729446D1
公开(公告)日：2004-07-15
申请号：DE69729446
申请日：1997-04-28
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
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公开(公告)号：CA2273091C
公开(公告)日：2004-06-29
申请号：CA2273091
申请日：1997-11-25
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
Abstract: A dual-band antenna coupler (100) for use in an adapter for portable radiotelephone (200). A plurality of curved bands of metal (204a-c) are positioned on a ground plane (102), with at least two of the plurality of curved bands (204a, 204b) of metal being electrically isolated from the ground plane (102) so as to couple radio frequency (RF) signals to and from the antenna (204) of the portable radiotelephone (200). The isolated curved bands (204a, 204b) of metal couple RF signals between the antenna (204) of the portable radiotelephone and first and second matching circuits (602, 604) designed to match the portable radiotelephone antenna (204) at each of the respective frequency bands. A selector switch (606) coupled to the output of the matching circuit s (602, 604) selects the appropriate matching circuit output for connection to an external antenna (304). The adapter also includes at least one ground pin (206a-c) mounted on the ground plane (102). When the portable radiotelephone (200) is interfaced with the antenna couple r (100), the ground pin (206a-c) makes electrical contact with a ground reference connection on the portable radiotelephone (202a, 202b, 208).
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公开(公告)号：CA2222649C
公开(公告)日：2003-10-07
申请号：CA2222649
申请日：1997-04-01
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
IPC: H01Q1/24 , H01Q1/32 , H03H7/46 , H04B1/18 , H04B1/38 , H04B1/40 , H01Q1/00 , H01Q1/22 , H04Q7/32
Abstract: A novel and improved antenna coupler (100) useful in an adapter for a portable radiotelephone (200). In a first embodiment, a plurality of curved bands (204a- 204c) of metal are positioned on a ground plane (102), with at least one of the plurality of curved bands of metal (204a-204c) being electrically isolated from the ground plane (102) so as to couple RF signals to and from the antenna (204) of a portable telephone (200). At least one ground pin (206a, 206b, 206c) is also mounted on the ground plane (102). When a portable radiotelephone (200) is interfaced with the antenna coupler (100), the at least one ground pin (206a, 206b, 206c) makes electrical contact with assembly screws (202a, 202b) or an external ground pad (208) of a battery charging port on the portable radiotelephone (200). In a second embodiment, a coupling pin (404) makes direct contact with a component of the RF chain of the portable radiotelephone (200). In a third embodiment, a helical coupler (504) surrounds the antenna (204) of the portable radiotelephone (200).
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