公开(公告)号：US20210006327A1

公开(公告)日：2021-01-07

申请号：US16948505

申请日：2020-09-21

Applicant: Maxtena, Inc.

Inventor： Carlo DiNallo ,  Nathan Cummings

IPC: H04B7/185 ,  H04B7/204 ,  H01Q3/34

Abstract: A mobile satellite radio equipped with a phased array antenna configures the phased array antenna in one or more non-directional operating modes in order to initially detect a signal from a communication satellite. Once a signal has been received from the satellite, frequency information determined in the course of operating in the one or more non-directional modes is used to configure the mobile satellite radio for operation in a subsequent stage when the phased array antenna is configured in a directional mode. In the subsequent stage the phased array antenna is used to scan a solid angle space to determine the direction of the satellite. Thereafter the antenna is used in the directional mode for satellite communication.

公开(公告)号：US20180048382A1

公开(公告)日：2018-02-15

申请号：US15791213

申请日：2017-10-23

Applicant: Maxtena, Inc.

Inventor： Carlo DiNallo ,  Nathan Cummings

IPC: H04B7/185 ,  H01Q3/34 ,  H04B7/204

CPC classification number: H04B7/18513 ,  H01Q3/34 ,  H04B7/18517 ,  H04B7/1853 ,  H04B7/2041

Abstract: A mobile satellite radio equipped with a phased array antenna configures the phased array antenna in one or more non-directional operating modes in order to initially detect a signal from a communication satellite. Once a signal has been received from the satellite, frequency information determined in the course of operating in the one or more non-directional modes is used to configure the mobile satellite radio for operation in a subsequent stage when the phased array antenna is configured in a directional mode. In the subsequent stage the phased array antenna is used to scan a solid angle space to determine the direction of the satellite. Thereafter the antenna is used in the directional mode for satellite communication.

公开(公告)号：US10222445B2

公开(公告)日：2019-03-05

申请号：US14683540

申请日：2015-04-10

Applicant: Maxtena, Inc.

Inventor： Nathan Cummings ,  Stanislav Licul ,  Carlo DiNallo

IPC: H01Q3/00 ,  G01S3/74 ,  H01Q3/04 ,  H01Q25/00 ,  H01Q3/26 ,  H01Q3/38 ,  H01Q11/08 ,  H01Q21/06 ,  G01S3/14

Abstract: A system includes a phased array antenna that is used to emulate antennas that have larger solid angle coverage and lower gain compared to a single beam of the phased array antenna. This is achieved by switching between beams of the phased array antenna while receiving a wireless communication signal and summing representations of signal energy received using the different beams. The system can be used to narrow down the angular coordinates of a transmitting satellite by emulating antenna patterns that cover portions of a search space. The system can also be used to determine a channel discriminator (e.g., frequency, code, time slot) that defines a signal being transmitted.

公开(公告)号：US10103433B2

公开(公告)日：2018-10-16

申请号：US15134444

申请日：2016-04-21

Applicant: Maxtena, Inc.

Inventor： Carlo DiNallo ,  Nathan Cummings ,  Stanislav Licul ,  Simone Paulotto

IPC: H04B7/185 ,  H01Q3/00 ,  H01Q3/36 ,  H01Q1/28 ,  H01Q3/26 ,  H01Q11/08 ,  H01Q3/28

Abstract: A phased array antenna for an earth terminal for a low earth orbit satellite communication system. The phased array antenna includes a set of Quadrafilar Helical Antenna's (QHAs) elements that produce a peak directivity far off-axis which partially compensates for the angular dependence of satellite systems gain which peaks at relatively lower angle. To attain the desired angular dependence of the gain and operability at high zenith angles, the QHAs are preferably spaced apart by a distance between 0.4λ and 0.45λ, includes filaments that have a helical pitch angle α of between 62° and 84°.

公开(公告)号：US10038235B2

公开(公告)日：2018-07-31

申请号：US14197166

申请日：2014-03-04

Applicant: Maxtena, Inc.

Inventor： Carlo DiNallo ,  Simone Paulotto ,  Nathan Cummings

IPC: H01Q1/36 ,  H01Q5/357 ,  H01Q5/35 ,  H01Q11/08 ,  H01Q21/30

CPC classification number: H01Q1/362 ,  H01Q5/35 ,  H01Q5/357 ,  H01Q11/08 ,  H01Q21/30

Abstract: A multi-mode, multi-band antenna system for a handheld wireless device includes a Quadrafilar Helix Antenna (QHA) that radiates circularly polarized waves is fed by a co-axial cable. The co-axial cable is also used in combination with the QHA as a monopole antenna. Because of the distinct electromagnetic field patterns of the QHA versus the combination of the QHA and the co-axial cable operating as a monopole antenna, the cross coupling between the two modes is low. In certain embodiments the co-axial cable can itself be formed into a helix in order to reduce the physical length of the antenna system while maintaining an electrical length desired to supported certain frequency bands in the monopole mode. According to certain embodiments a post which also serves to increase the effective electric length of the co-axial cable and thereby support a lower frequency band is provided along the centerline of the QHA.