公开(公告)号：AU772984B2

公开(公告)日：2004-05-13

申请号：AU4442502

申请日：2002-05-29

Applicant: QUALCOMM INC

Inventor： GRANATA GARY ,  THOMPSON JAMES H

IPC: H04B7/08

公开(公告)号：AU2003213480A1

公开(公告)日：2003-08-21

申请号：AU2003213480

申请日：2003-07-16

Applicant: QUALCOMM INC

Inventor： PANTON WILLIAM R ,  THOMPSON JAMES H ,  TASSOUDJI MOHAMMAD ALI

IPC: H04B7/08

公开(公告)号：AU750535B2

公开(公告)日：2002-07-18

申请号：AU7480998

申请日：1998-05-13

Applicant: QUALCOMM INC

Inventor： GRANATA GARY ,  THOMPSON JAMES H

IPC: H04B7/08 ,  H04B7/15

Abstract: A method for antenna selection in a satellite communications system having a satellite transmitting a signal and a user terminal having a plurality of antennas, wherein each of the plurality of antennas can be selectively coupled to one of a plurality of signal paths, wherein a first one of the signal paths initially receives the signal on a first one of the plurality of antennas and initially applies a predetermined minimum level of attenuation to the signal, the method, comprising the steps of: applying a predetermined maximum level of attenuation on a second one of the signal paths; coupling a second one of the plurality of antennas to said second signal path; decreasing the level of attenuation applied on said second signal path until the noise power level on said second signal path is equivalent to the noise power level on the first signal path; and when the quality of the signal received from the satellite by said second one of the plurality of antennas exceeds the quality of the signal received from the satellite by the first one of the plurality of antennas, applying said predetermined maximum level of attenuation on the first signal path and applying the predetermined minimum level of attenuation on said second signal path.

公开(公告)号：AU4442502A

公开(公告)日：2002-07-11

申请号：AU4442502

申请日：2002-05-29

Applicant: QUALCOMM INC

Inventor： GRANATA GARY ,  THOMPSON JAMES H

IPC: H04B7/08

公开(公告)号：BR9809810A

公开(公告)日：2000-06-27

申请号：BR9809810

申请日：1998-05-13

Applicant: QUALCOMM INC

Inventor： GRANATA GARY ,  THOMPSON JAMES H

IPC: H04B7/08 ,  H04B7/15

Abstract: A method for antenna selection in a satellite communications system having a satellite transmitting a signal and a user terminal having a plurality of antennas, wherein each of the plurality of antennas can be selectively coupled to one of a plurality of signal paths, wherein a first one of the signal paths initially receives the signal on a first one of the plurality of antennas and initially applies a predetermined minimum level of attenuation to the signal, the method, comprising the steps of: applying a predetermined maximum level of attenuation on a second one of the signal paths; coupling a second one of the plurality of antennas to said second signal path; decreasing the level of attenuation applied on said second signal path until the noise power level on said second signal path is equivalent to the noise power level on the first signal path; and when the quality of the signal received from the satellite by said second one of the plurality of antennas exceeds the quality of the signal received from the satellite by the first one of the plurality of antennas, applying said predetermined maximum level of attenuation on the first signal path and applying the predetermined minimum level of attenuation on said second signal path.

公开(公告)号：AU5816499A

公开(公告)日：2000-03-27

申请号：AU5816499

申请日：1999-09-07

Applicant: QUALCOMM INC

Inventor： MOLLENKOPF STEVEN ,  THOMPSON JAMES H

IPC: H04B7/005

Abstract: The present invention relates to a method and a system of controlling the gain input into an antenna of a gateway. Based on the obtained antenna elevation a path gain is calculated. Together with the obtained transponder gain and the obtained antenna dish gain the path gain is used to calculate a common gateway gain. This common gateway gain is used to adjust the gain a variable gain amplifier.

公开(公告)号：HK1015201A1

公开(公告)日：1999-10-08

申请号：HK98116188

申请日：1998-12-28

Applicant: QUALCOMM INC

Inventor： STRICH W ELI ,  THOMPSON JAMES H

IPC: H04B7/06 ,  H04B7/10 ,  H04B7/26 ,  H04J13/04 ,  H04W16/06 ,  H04W16/24 ,  H04W16/28 ,  H04B ,  H04Q

公开(公告)号：FI971686A

公开(公告)日：1997-06-23

申请号：FI971686

申请日：1997-04-18

Applicant: QUALCOMM INC

Inventor： TASSOUDJI MOHAMMAD ALI ,  THOMPSON JAMES H ,  STANDKE RANDOLPH E

IPC: H01Q5/00 ,  H01Q5/378 ,  H01Q5/40 ,  H01Q11/08 ,  H01Q

Abstract: A dual-band octafilar helix antenna operational at two frequencies, while maintaining a relatively small package size. The dual-band octafilar antenna is manufactured by disposing radiators and a feed network onto a flexible substrate and forming the substrate into a cylindrical shape to obtain the helical configuration. The dual-band octafilar helix antenna includes four active radiators which are matched to a first frequency and disposed on a radiator portion of the flexible substrate. Four additional radiators, which may be either passive or active radiators, are matched to a second frequency, are also disposed on the radiator portion of the substrate and interleaved with the active radiators. At least one feed network is provided on a feed portion of the substrate that provides 0 DEG , 90 DEG , 180 DEG , and 270 DEG signals to active radiators. The sets of radiators and associated feed networks may be formed on opposing sides of a single substrate or on spaced apart layers in a multi-layered support substrate design.

公开(公告)号：FI971463A

公开(公告)日：1997-06-09

申请号：FI971463

申请日：1997-04-08

Applicant: QUALCOMM INC

Inventor： STANDKE RANDOLPH ,  THOMPSON JAMES H

IPC: H01Q3/40 ,  H01P5/10 ,  H01Q11/08 ,  H01Q

Abstract: A quadrifilar antenna is comprised of four radiators which, in the preferred embodiment, are etched onto a radiator portion of a microstrip substrate. The microstrip substrate is formed into a cylindrical shape such that the radiators are helically wound. Also etched onto the microstrip substrate is a feed network that provides 0 DEG , 90 DEG , 180 DEG and 270 DEG signals to the antenna radiators. The feed network utilizes a combination of one or more branch line couplers and one or more power dividers to accept an input signal from a transmitter and to provide therefrom the 0 DEG , 90 DEG , 180 DEG and 270 DEG signals needed to drive the antenna. For receive operations, the feed network utilizes these same components to receive the 0 DEG , 90 DEG , 180 DEG and 270 DEG signals from the antenna radiators and to provide a single output signal to a communications receiver. The power divider accepts an input signal and provides therefrom two output signals differing from each other in phase by 180 DEG . The branch line coupler accepts an input signal and provides therefrom two output signals differing from one another in phase by 90 DEG .

公开(公告)号：MX9603371A

公开(公告)日：1997-03-29

申请号：MX9603371

申请日：1995-02-14

Applicant: QUALCOMM INC

Inventor： STRICH ELI W ,  THOMPSON JAMES H

IPC: H04B7/06 ,  H04B7/10 ,  H04B7/26 ,  H04J13/04 ,  H04W16/06 ,  H04W16/24 ,  H04W16/28 ,  H04B07/26 ,  H04Q07/36

Abstract: Un sistema para transportar informacion a por lo menos un usuario en un sistema de comunicacion de espectro disperso, que comprende: un medio para generar, a una velocidad de chip predeterminada, una primera señal de ruido pseudoaleatorio (PN) de un primer codigo PN predeterminado; un primer medio para combinar la primera señal Pn y una primera señal de informacion y para proporcionar una primera señal de modulacion resultante; un medio para proporcionar una segunda señal de modulacion haciendo retardar la primera señal de modulacion en un primer retardo predeterminado que se relaciona inversamente a la velocidad de chip; un medio para transmitir selectivamente la primer y la segunda señales de modulacion respectivamente a la primera y la segunda áreas de cobertura; mediante lo cual la transmision selectiva de la primera y la segunda señales de modulacion da por resultado la variacion en tamaño de un primer sector de usuario en donde se incluye el por lo menos un usuario.