| 摘要 |
A system for forming beams that are suited to a given coverage, has at least the following elements: a configuration manager, a set of modems in contact with switches, multiplexers for multiplexing the modems by group onto as many intermediate ports each corresponding to a beam, a module for forming pathways generating a number of pathways distributed about the axis of the antenna, a phase-shift module for the beams of each of the pathways, a power transposition-amplification module and at least two antennas connected to said transposition-amplification module. For the reception part, the system comprises a set of modules that are identical with the exception of the transposition-amplification module, which carries out the low-noise reception and the transposition. |
| 主权项 |
1. A point to multipoint millimeter wave communication system, comprising a transmission subsystem, said transmission subsystem:
an Extremely High Frequency (EHF) microwave device comprising:
a manager processor configured to control and supervise frequencies and levels of a plurality of frequencies associated with a plurality of modems, and switches configured to assign respective beams to said plurality of modems;a stack of high capacity modems in the plurality of modems of at least 40 MHz each being configured by said manager processor, each modem having an input and an output of an analog stream in a Super High Frequency (SHF) range;an analog switching circuitry configured to assign said high capacity modems to a multiplexer using said manager processor;the multiplexer being an analog multiplexer adapted to multiplex said switched modems onto as many intermediate ports each corresponding to a beam, whereby a group of modems is assigned to a group of pathways (Vj),a passive SHF beam-former circuit for forming pathways to create a network of said beams distributed regularly about an axis of an antenna of said point to multipoint millimeter wave communication system;a phase shift module configured to provide a phase shift corresponding to an angular offset (Δφ) on each pathway of the group of pathways (Vj) to place the beams with a desired precision with respect to one another, said phase shift being associated with phase shift coefficients; andan EHF set of Monolithic Microwave Integrated Circuits (MMICs) configured to perform a first transposition of SHF frequencies to EHF frequencies and to perform a power amplification, said EHF set of MMICs directly receiving inputs from intermediate antenna ports (Vi) of at least two elementary column antennas, said EHF set of MMICs connected to a common local oscillator, such that each output of said EHF set of MMICs is directly on each of the at least two elementary column antennas,
wherein the point to multipoint millimeter wave communication system includes a simultaneous multilink of a bandwidth of at least 500 MHz on directional beams for a given coverage, using the at least two elementary antennas. |
