公开(公告)号：AU6844996A

公开(公告)日：1997-03-05

申请号：AU6844996

申请日：1996-08-09

Applicant: QUALCOMM INC

Inventor： STANDKE RANDOLPH E ,  THOMPSON JAMES H

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

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：CA2202128A1

公开(公告)日：1997-02-20

申请号：CA2202128

申请日：1996-08-09

Applicant: QUALCOMM INC

Inventor： THOMPSON JAMES H ,  STANDKE RANDOLPH E

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

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.degree., 90.degree., 180.degree. and 270.degree. 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.degree., 90.degree., 180.degree. and 270.degree. signals needed to drive the antenna. For receive operations, thefeed network utilizes these same components to receive the 0.degree., 90.degree., 180.degree. and 270.degree. 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.degree.. The branch line coupler accepts an input signal and provides therefrom two output signals differing from one another in phase by 90.degree..

公开(公告)号：FI963153A

公开(公告)日：1996-10-10

申请号：FI963153

申请日：1996-08-12

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 ,  H04B ,  H04Q

公开(公告)号：FI963153A0

公开(公告)日：1996-08-12

申请号：FI963153

申请日：1996-08-12

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 ,  H04B ,  H04Q

公开(公告)号：AU2200995A

公开(公告)日：1995-10-17

申请号：AU2200995

申请日：1995-03-28

Applicant: QUALCOMM INC

Inventor： THOMPSON JAMES H ,  STANDKE RANDOLPH E ,  PIERCE THOMAS R

IPC: H01P1/06 ,  H01P5/103

Abstract: A coaxial-waveguide assemblage is disclosed herein of the invention includes a first coaxial transmission line having a first inner and a first outer conductor. The inventive assemblage further includes a waveguide electromagnetically coupled to the first coaxial transmission line, where an inner surface of the waveguide bounds a signal propagation space. The waveguide is also electromagnetically coupled to a second coaxial transmission having a second inner and a second outer conductor. The inner conductor of the second coaxial transmission line is disposed to rotate about a first vertical axis, thereby enabling the second coaxial transmission line to be connected to a rotating antenna. In a particular implementation the coaxial-waveguide assemblage is disposed within a rotary joint operative to couple electromagnetic energy between first and second signal ports. An axially elongated dielectric sleeve, disposed about the second inner conductor, will preferably be dimensioned to extend into the waveguide propagation space. The rotary joint will generally include a bearing arrangement interposed between the second outer conductor and the axially elongated dielectric sleeve of the second coaxial transmission line. Tuning of the coaxial-waveguide assemblage is facilitated by a tuning cavity in communication with the propagation space.

公开(公告)号：CA2183258A1

公开(公告)日：1995-08-17

申请号：CA2183258

申请日：1995-02-14

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 ,  H04B1/69 ,  H04Q7/36

Abstract: A system and method for dynamically varying traffic channel sectorization within a spread spectrum communication system is disclosed herein. In a preferred implementation the system is operative to convey information to at least one specified user in a spread spectrum communication system and includes a pseudorandom code generator (50) for generating, at a predetermined chip rate, a pseudorandom noise (PN) signal of a predetermined PN code. The PN signal is then combined with a first information signal in a spread spectrum transmitter (42) to provide a PN spread information signal. The system further includes at least one additional spread spectrum transmitter (44, 46) each for receiving through a respective delay element (52, 54) delayed versions of the PN signal for providing at least one additional modulation signal. A switching transmission network (74) is disposed to selectively transmit via antennas (85, 86) the first and additional modulation signals respectively to a first and at least one additional coverage area. Selective transmission of the first and the at least one additional modulation signal results in variation in size of a first user sector. The first user sector is associated with a first set of traffic channels, one of which is allocated to the specified user. The system may also be configured to selectively receive, and coherently combine, first and second modulation signals from first and second coverage areas. I

公开(公告)号：DE69937458T2

公开(公告)日：2008-08-28

申请号：DE69937458

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：AT298151T

公开(公告)日：2005-07-15

申请号：AT97917810

申请日：1997-04-01

Applicant: QUALCOMM INC

Inventor： GILMORE ROBERT P ,  THOMPSON JAMES H

IPC: H04B7/005 ,  H04B7/15 ,  H04B7/185

Abstract: A system and method for controlling the strength of a shared resource signal transmitted by the satellite transponder in a satellite communications system. The satellite communications system includes a gateway for transmitting communications signals including a shared resource signal, a satellite transponder for relaying the signals to at least one subscriber unit (for example, a phone), and at least one subscriber unit for receiving the signals. The method includes the steps of receiving the shared resource signal, at each subscriber unit, via the satellite transponder; measuring, at each subscriber unit, a signal strength for the received shared resource signal; sending the signal strengths to the gateway; and adjusting the power of the shared resource signal transmitted by the satellite transponder based on the signal strengths.

公开(公告)号：HK1067464A1

公开(公告)日：2005-04-08

申请号：HK04110289

申请日：2001-01-11

Applicant: QUALCOMM INC

Inventor： GRANATA GARY ,  THOMPSON JAMES H

IPC: H04B20060101

公开(公告)号：AU7480998A

公开(公告)日：1998-12-08

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.