Raysat Cyprus Limited

Gilat Satellite Networks Ltd.

Raysat Inc

Stanimir Dimitrov Kamenopolski

Victor Liudmilov Boyanov

Doron Rainish

Ilan Saul Barak

Danny Spirtus

Borislav Petkov Marinov

Ivaylo Georgiev Slavkov

Ilan Kaplan

David Gross

Kevin Arthur Bruestle

Rossen Nikolov Traykov

Plamen Hristov Bazirgianov

Mariya Popova

Georgi Lyubenov

Daniel Francis Difonzo

A multi-band low-profile, low-volume two-way mobile panel array antenna system is described. Operation of the antenna may automatically switch between bands based on various user-entered parameters.

Antenna system

A system for utilizing circular polarized signals to perform satellite communication to mobile users. The satellite includes transponders, each transponder providing linearly polarized signals and at least two orthogonal linear polarized transponders. A plurality of mobile users with a circularly polarized antenna for receiving signals from the satellite, and singly circular or linear polarized transmit antennas for transmitting signals to the satellite. Circuits for providing a correction scheme implemented in a hub side to offset frequency error between two channels produced by the satellite transponder local oscillators mismatch.

Reduced cost mobile satellite antenna system using a plurality of satellite transponders

An antenna system comprising a first multi-layer Printed Circuit Board having multiple antenna elements disposed thereon, at least a second multi-layer PCB, which is mounted below the first multi-layer PCB, and which comprises electronic components for processing Radio Frequency signals received by the antenna elements; and multiple RF transitions, which are mounted between the first and second multi-layer PCBs and are operative to transfer the RF signals from the first multi-layer PCB for processing by the electronic components in the second multi-layer PCB.

Flat mobile antenna system

Digital phase shifter, comprising series connection of controlled phase shifting bits (-), each of them inserts determinate amount of phase delay of the passing signal, wherein the phase change occur in response to the control signal switching the phase cellsand applied to its steering terminalfor a switching element () of each of the cellscharacterized in applying as a switching element () the discrete p-HEMT (pseudomorphic high electron mobility transistors) with positive or negative pinch-off voltage.

Digital phase shifter

Growing community of inventors

Sofia, Bulgaria

Stanimir Dimitrov Kamenopolski