Wireless communication system, wireless communication method, a relay device and a wireless terminal device. The band pass filter significantly reduces the complex components or images of the GPS signal and the LO signal The control input to the M: Advantageously, the invention makes possible the implementation of receive diversity in a repeater being used in a wireless communication system. While the present invention has been illustrated by a description of one or more embodiments thereof and while these embodiments have been described in considerable detail, they are not intended to restrict or in any way limit the scope of the appended claims to such detail. Another aspect of the invention uses simple RF electronics, and Butler matrix technology, to provide a mechanism to electronically steer an antenna beam toward the direction of the base station. Phase circuitry for affecting the phase of signals from the at least one receive antenna element and at least one transmit antenna element is coupled between the respective receive or transmit antenna element and the receiver or transmitter circuitry.
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US20140127989A1 – Repeaters for wireless communication systems – Google Patents
As described above, such an approach can include the use of radio frequency chokes in the enclosure between the antennas to reduce the coupling between the antennas, or the use of an adaptive interference canceller to provide additional gain and phase margin, as described above. Some examples of unlicensed frequency bands include: The blocks in the flow chart of FIG. For relatively low power applications, a first face a may mount a plurality antenna elements which may be patches, dipoles or other antenna elements.
In the approach shown in FIG. This application would embed the RF electronics within the antennaand mount the system to the laptop unit.
Method and apparatus for use wirelesa a radio distributed antenna system having an out-of-band reference signal. Method and apparatus for arranging communication sessions in a communication system.
In this case, the signal from the main receive antenna a combined with the signal from the receive diversity antenna at the combinerafter bandpass filtering at filters aand equal gain amplification at LNA’s Advantageously, the invention makes possible the implementation of receive diversity in a repeater being used in a wireless communication system.
The array spacing may be chosen as a half wavelength at the center frequency of the frequency band being amplified and re-transmitted by the repeater, to produce a null in the array factor on the horizons, thus reducing the direct coupling between the antennas on opposite sides of the repeater.
The signal repeating element of claim 7 wherein the at least one dipole transmit antenna element is a bow-tie dipole element.
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Wire,ess output signal of the channel module is then routed to a power amplifier in each path to create a high level transmit signal. The signal repeating element of claim 1 further comprising an adaptive cancellation circuit coupled with the at least one receive antenna element and the receiver circuitry and configured for generating a cancellation signal for reducing feedback signals present in the uplink path.
In the example shown in FIG.
Departing from the prior art, the repeater of the invention comprises an integrated repeater system in which the repeater electronics are incorporated into a single unit or module along with the two antennas. The invention relates generally to repeaters for use in wireless communication systems.
In one particular embodiment of the invention having a base-station-facing antenna mounted on one gaimng the opposing sides of the housing and a mobile-facing antenna mounted on the other of the opposing sides of the housing, the two antennas each comprise an array of antenna elements, and a beamforming arrangement creates a desired antenna pattern of the base-station-facing antenna relative to a base station and a desired antenna pattern of the mobile-facing antenna relative to subscriber equipment.
Often a major challenge for wireless service providers is getting access to an equipment site situated in an optimum location. Apparatus and method facilitating communication between components of a radio frequency identification system. The electronics for connecting the antenna to the necessary diplexers, filters, and power amplifiers are contained within a metal housing 15and the antenna sheet 13 is fastened to one side of the housing recfiver Apparatus and methods for launching electromagnetic waves having a certain electric field structure.
USA1 – Repeaters for wireless communication systems – Google Patents
The control input to the M: Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves. The signal repeating element of claim 1 further comprising a plurality of astrin antenna elements. Wireless communication system, wireless communication method, a relay device and a wireless terminal device.
The propagation of this signal, back to the input antenna, will incur attenuation, H.
The dipoles are preferably polarized at a Similar electronic circuits or paths including filters and amplifiers are interposed between the respective pairs of antennas 52 a54 receiveg and 52 b54 b. Aesthetics and zoning issues limits increasing the size of the base station antenna to achieve additional directive gain.
The signal repeating element of claim 14 wherein the beamforming circuitry includes a Butler matrix. Enhanced service; wireless phone services that provide an Internet connection; wireless services that provide the location of, e. The Ethernet hub controls the forwarding of the signals from the multiple wireless links to the single wired connection from the Ethernet hub to an indoor flat-panel repeaterwhich then relays those signals on to other repeaters such as asrron and located throughout the interior of the building.
The flat-panel repeater can be mounted on a wall or window, at or near a location where the RF signal power from a nearby base station is at its maximum power level within the building.
A series of LEDS or other suitable display elements could be used shown at the topwhich could aid the user to help orient the unit, to more optimally orient the antenna wirreless towards directions of greater signal power. A ground plane for the antenna is provided on the lower surface of the repeater body which contains the electronics.