-
公开(公告)号：DK0937312T3
公开(公告)日：2003-09-29
申请号：DK97950694
申请日：1997-11-25
Applicant: QUALCOMM INC
Inventor： FUNK THOMAS J , MALDONADO DAVID
Abstract: An antenna adapter for interfacing a portable radiotelephone with external equipment. In a preferred embodiment, a connector assembly includes a first connector portion that inserts directly into the radiotelephone's antenna port, replacing the normal antenna assembly. Matching electrical components on a circuit board are used to match the impedance of the antenna port of the portable radiotelephone. A second connector portion typically uses conventional RF connectors to couple the radiotelephone antenna port to external equipment.
-
公开(公告)号：AU715739B2
公开(公告)日：2000-02-10
申请号：AU2746697
申请日：1997-04-28
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
-
公开(公告)号：BR9709749A
公开(公告)日：1999-08-10
申请号：BR9709749
申请日：1997-04-28
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
-
公开(公告)号：NO992711L
公开(公告)日：1999-08-02
申请号：NO992711
申请日：1999-06-03
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.
-
公开(公告)号：CA2222649A1
公开(公告)日：1997-10-09
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 (204a204c) 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).
-
Patent Agency Ranking
公开(公告)号：BRPI0307260B1
公开(公告)日：2016-11-29
申请号：BR0307260
申请日：2003-01-28
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
Abstract: "filtros de duplos loop travado por fax de largura de banda dual para rádios multimodo". é descrito um equipamento e um método para filtrar um sinal em um loop travado por fax. um equipamento típico para filtrar um sinal de erro de fase compreende um primeiro subcircuito de filtro que recebe um sinal de erro de fase a partir de um comparador de fase e filtrar o sinal de erro quando habilitado, um segundo subcircuito de filtro que recebe o sinal de erro de fase a partir do comparador de fase e filtra o sinal de erro quando habilitado e primeiro e segundo comutadores de habilitação que são ativados em combinação para controlar a filtragem do sinal de erro. o primeiro subcircuito de filtro é habilitado mediante ativação de uma primeira combinação dos comutadores de habilitação e o segundo subcircuito de filtro é habilitado mediante ativação de uma segunda combinação dos comutadores de habilitação. um subcircuito de aquisição rápida também pode ser usado para subamortecer temporariamente o filtro e melhorar o desempenho total do circuito de loop travado por fax. o filtro pode ser usado para obter operação multimodo em um rádio celular.
-
公开(公告)号：BR0315822A
公开(公告)日：2005-09-13
申请号：BR0315822
申请日：2003-10-31
Applicant: QUALCOMM INC
Inventor： SHIU DA-SHAN , ZHANG LI , SY EUGENE , MALDONADO DAVID , DHALIWAL UPKAR
Abstract: Techniques for improved low latency frequency switching are disclosed. In one embodiment, a controller receives a frequency switch command and generates a frequency switch signal at a time determined in accordance with a system timer. In another embodiment, gain calibration is initiated subsequent to the frequency switch signal delayed by the expected frequency synthesizer settling time. In yet another embodiment, DC cancellation control and gain control are iterated to perform gain calibration, with signaling to control the iterations without need for processor intervention. Various other embodiments are also presented. Aspects of the embodiments disclosed may yield the benefit of reducing latency during frequency switching, allowing for increased measurements at alternate frequencies, reduced time spent on alternate frequencies, and the capacity and throughput improvements that follow from minimization of disruption of an active communication session and improved neighbor selection.
-
公开(公告)号：DE69729518D1
公开(公告)日：2004-07-22
申请号：DE69729518
申请日：1997-04-01
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.
-
公开(公告)号：AT269590T
公开(公告)日：2004-07-15
申请号：AT97917159
申请日：1997-04-01
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.
-
公开(公告)号：DE69723284T2
公开(公告)日：2004-05-27
申请号：DE69723284
申请日：1997-11-25
Applicant: QUALCOMM INC
Inventor： FUNK J , MALDONADO DAVID
Abstract: An antenna adapter for interfacing a portable radiotelephone with external equipment. In a preferred embodiment, a connector assembly includes a first connector portion that inserts directly into the radiotelephone's antenna port, replacing the normal antenna assembly. Matching electrical components on a circuit board are used to match the impedance of the antenna port of the portable radiotelephone. A second connector portion typically uses conventional RF connectors to couple the radiotelephone antenna port to external equipment.
-
-
-
-
-
-
-
-
-
Search Results
63
records
(took 0.023 seconds)
