Abstract: A load-pull tuner is disclosed herein. The tuner comprises a transmission line network and dielectrics positionable above the transmission line network. The transmission line network comprising a main transmission line and two stubs connected to the main transmission line, the two stubs being transmission lines. The main transmission line and the two stubs being tunable transmission lines. The load-pull tuner directly connect to a Ground-Signal-Ground (GSG) probe. The load-pull tuner may be used at higher reflection coefficients for phased-array system characterization.
Type:
Grant
Filed:
September 16, 2021
Date of Patent:
January 2, 2024
Assignee:
C-COM SATELLITE SYSTEMS INC.
Inventors:
Ardeshir Palizban, Suren Gigoyan, Soroush Rasti Boroujeni, Safieddin Safavi-Naeini
Abstract: A planar micro-electromechanical system (MEMS)-based phase shifter is described which comprises a dielectric substrate, a grounded coplanar waveguide (GCPW) transmission line for carrying input and output signals, a high-resistivity silicon (HRS) slab coated with metallic gratings over the GCPW line, and a MEMS actuator for adjusting a distance between the HRS slab and the GCPW line to provide a phase shift.
Type:
Grant
Filed:
December 9, 2020
Date of Patent:
November 8, 2022
Assignee:
C-COM SATELLITE SYSTEMS INC.
Inventors:
Amir Raeesi, Naime Ghafarian, Suren Gigoyan, Safieddin Safavi-Naeini
Abstract: A tunable phase shifter is provided which includes a dielectric substrate, a transmission line formed based on the dielectric substrate for carrying input and output signals and a dielectric disturber placed on top of the transmission line. The phase shifter further includes a phase shifting mechanism for adjusting at least one of a distance between the transmission line and the substrate and a distance between the transmission line and the dielectric disturber to effect phase shift.
Type:
Grant
Filed:
October 30, 2020
Date of Patent:
June 28, 2022
Assignee:
C-COM SATELLITE SYSTEMS INC.
Inventors:
Ahmed Shehata Abdellatif, Aidin Taeb, Nazy Ranjkesh, Suren Gigoyan, Ahmed Kamal Said Abdelaziz, Safieddin Safavi-Naeini
Abstract: A tunable phase shifter is provided which includes a dielectric substrate, a transmission line formed based on the dielectric substrate for carrying input and output signals and a dielectric disturber placed on top of the transmission line. The phase shifter further includes a phase shifting mechanism for adjusting at least one of a distance between the transmission line and the substrate and a distance between the transmission line and the dielectric disturber to effect phase shift.
Type:
Grant
Filed:
July 2, 2018
Date of Patent:
November 17, 2020
Assignee:
C-COM SATELLITE SYSTEMS INC.
Inventors:
Ahmed Shehata Abdellatif, Aidin Taeb, Nazy Ranjkesh, Suren Gigoyan, Ahmed Kamal Said Abdelaziz, Safieddin Safavi-Naeini
Abstract: A method and apparatus for calibrating a phased antenna array. The antennas are excited using several excitation patterns, each changing the state of the antennas by a specific amplitude and phase. The phases correspond to phase values of a basis function of a two-dimensional discrete Fourier transform, and each excitation pattern corresponds to a different basis function. Using a calibration antenna, e.g. at a fixed point inside the system, the phase and amplitude of the radiated field due to each excitation patterns is measured sequentially. From this data, the phase and amplitude of the radiated field for each element at the location of the calibration antenna is obtained and used to adjust the phase shifters and amplifiers. For calibrated systems, the spectral domain representation of radiated fields can be sparse. Taking advantage of this property and a spectrally compressed sensing technique, recalibration can involve fewer measurements to mitigate service interruptions.
Type:
Grant
Filed:
October 21, 2016
Date of Patent:
February 19, 2019
Assignee:
C-COM Satellite Systems Inc.
Inventors:
Safieddin Safavi-Naeini, Mohammad Haghtalab
Abstract: A tunable phase shifter is provided which includes a dielectric substrate, a transmission line formed based on the dielectric substrate for carrying input and output signals and a dielectric disturber placed on top of the transmission line. The phase shifter further includes a phase shifting mechanism for adjusting at least one of a distance between the transmission line and the substrate and a distance between the transmission line and the dielectric disturber to effect phase shift.
Type:
Grant
Filed:
May 29, 2015
Date of Patent:
July 3, 2018
Assignee:
C-COM SATELLITE SYSTEMS INC.
Inventors:
Ahmed Shehata Abdellatif, Aidin Taeb, Nazy Ranjkesh, Suren Gigoyan, Ahmed Kamal Said Abdelaziz, Safieddin Safavi-Naeini