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Ofer Saban
Ofer Saban, Moshav Kidron IL
| Patent application number | Description | Published |
|---|---|---|
| 20100309931 | COMMUNICATION SYSTEM USING LOW BANDWIDTH WIRES - A high frequency signal is down-converted into an intermediate frequency signal, transmitted over a limited bandwidth medium from a master unit to a remote unit and up-converted back into its original high frequency at the remote unit. The up-conversion is aided by reconstruction of a reference signal embedded at the master unit as a carrier for a management signal which is transmitted to the remote unit through the same limited bandwidth medium together with the intermediate frequency signal. The reference signal is reconstructed using a phase locked loop which includes a charge pump and is kept stable during intervals between bits and messages by a charge pump shutter. | 12-09-2010 |
Ofer Saban, Arlington, VA US
| Patent application number | Description | Published |
|---|---|---|
| 20100099451 | Method and System for Real Time Control of an Active Antenna Over a Distributed Antenna System - The invention is directed to a method and system for supporting wireless medical telemetry services (MTS) on a Distributed Antenna System (DAS). A DAS can support a many wireless services, including voice and data services using the same physical equipment. WMTS systems can include one or more active antenna units which can be controlled by the MTS access point. The DAS can include one or more control channels for transferring the MTS control and status information between the MTS access point and the antenna. The control channels can be transferred over a separate cable. Alternatively, the control channel signals can be transferred using one or more intermediate frequency signal that is transferred over the existing cables of the DAS between the MTS access point and the antenna. The control channels can be used to configure and control and receive status from the managed components of the DAS including active antennae, control in real time the amplifiers used to process TDD signals, and control in real time the switching of the diversity antenna systems. The original frequency of the WMTS can be converted to an IF signal in order to be combined without interfering with the other services transferred over the DAS. The DAS can also carry a reference clock signal that can be used to synchronize the frequency conversion to and from an IF signal for transmission over the DAS without interfering with other signals. The reference clock signal can be used to control the operation of the antenna units, including controlling the operation of diversity antenna configurations and controlling antenna broadcast operations to reduce interference when two or more antenna units broadcast on the same frequency band at the same time. | 04-22-2010 |
Ofer Saban, Alexandria, VA US
| Patent application number | Description | Published |
|---|---|---|
| 20100093391 | Multiple Data Services Over a Distributed Antenna System - The invention is directed to a method and system for supporting multiple time division duplexed (TDD) based wireless services or frequency division duplexed (FDD) wireless services on a Distributed Antenna System (DAS). A DAS can support a many wireless services, including voice and data services using the same physical equipment. TDD based services use a common clock signal to synchronize the components of the DAS for transmission and reception of TDD signals. In accordance with the invention, the DAS can include a GPS receiver which can extract a timing signal (such as a 1 pps signal) from a GPS signal and distribute the timing signal to any and all components of the DAS to enable synchronization of the components for transmitting and receiving TDD signals. The GPS receiver can be part of the interface that connects a TDD based service to the DAS or separate component of the DAS. In accordance with the invention, the DAS can distribute a reference clock signal to all of the components of the DAS in order to maintain zero frequency shift while manipulating with the carrier frequencies of the various wireless services carried by the DAS. In addition, and in accordance with the invention, two analog architectures for better integration between the services sources (BTS) and the DAS are disclosed. | 04-15-2010 |
Ofer Saban, Beit Elazari IL
| Patent application number | Description | Published |
|---|---|---|
| 20090029663 | Frequency Source Synchronization And Redundancy - A system and method for ensuring proper synchronization of a plurality of frequency sources used in reception diversity-based radio reception. The frequency sources are concatenated in a synchronization loop, through which one frequency source having a high performance oscillator is configured as a master source. Through its oscillator, the master provides an internal synchronization signal that synchronizes all other sources, which have lower performance oscillators and are configured as slaves. Upon a failure in the master oscillator or in the synchronization loop, a slave source takes over as an alternative master source and provides its internal oscillator signal as an alternative synchronization signal to all other frequency sources. | 01-29-2009 |
| 20090154621 | MIMO-ADAPTED DISTRIBUTED ANTENNA SYSTEM - Methods and systems for carrying different signals required for MIMO communication using a single coaxial cable between two endpoints of a distributed antenna system (DAS) network. Original MIMO signals having the same frequency are frequency-separated at a first endpoint of the network. The frequency-separated signals are propagated together over the single coaxial cable and then reconstructed to their original frequency at a second endpoint of the network. | 06-18-2009 |
Ofer Saban, Meshek IL
| Patent application number | Description | Published |
|---|---|---|
| 20080198955 | METHOD AND SYSTEM FOR IMPROVING UPLINK PERFORMANCE - The present invention is directed to improvements for distributed antenna systems and more particularly to methods and systems for improving uplink communications. In one embodiment, Aggregation Point Noise Blocking provides for blocking or filtering the noise contributed by one or more of the branches coupled to an aggregation point that are not carrying the signal from a particular terminal. Signal activity from a given terminal on a particular branch can be identified and that information can be used to selectively block or filter the signal noise contributed by the other branches to an aggregation point. The selective blocking or filtering can also include an attenuation function to attenuate the signal and provide dynamic range smoothing. In another embodiment the signal can be regenerated to produce a signal that has a restored or very high SNR. An uplink regeneration block can be provided which demodulates the uplink signal to recover the transmitted information and then re-modulates the transmitted information to regenerate a signal at a restored or very high SNR. | 08-21-2008 |
| 20080200117 | METHOD AND SYSTEM FOR IMPROVING UPLINK PERFORMANCE - The present invention is directed to improvements for distributed antenna systems and more particularly to methods and systems for improving uplink communications. In one embodiment, Aggregation Point Noise Blocking provides for blocking or filtering the noise contributed by one or more of the branches coupled to an aggregation point that are not carrying the signal from a particular terminal. Signal activity from a given terminal on a particular branch can be identified and that information can be used to selectively block or filter the signal noise contributed by the other branches to an aggregation point. The selective blocking or filtering can also include an attenuation function to attenuate the signal and provide dynamic range smoothing. In another embodiment the signal can be regenerated to produce a signal that has a restored or very high SNR. An uplink regeneration block can be provided which demodulates the uplink signal to recover the transmitted information and then re-modulates the transmitted information to regenerate a signal at a restored or very high SNR. | 08-21-2008 |
| 20080232305 | Distributed Antenna System for MIMO Technologies - The invention is directed to a method and system for supporting MIMO technologies which can require the transport of multiple spatial streams on a traditional Distributed Antenna System (DAS). According to the invention, at one end of the DAS, each spatial stream is shifted in frequency to a pre-assigned band (such as a band at a frequency lower than the native frequency) that does not overlap the band assigned to other spatial streams (or the band of any other services being carried by the DAS). Each of the spatial streams can be combined and transmitted as a combined signal over a common coaxial cable. At the other “end” of the DAS, the different streams are shifted back to their original (overlapping) frequencies but retain their individual “identities” by being radiated through physically separate antenna elements. | 09-25-2008 |
Ofer Saban, Vienna, VA US
| Patent application number | Description | Published |
|---|---|---|
| 20110130163 | Method and System for Integrating an RF Module into a Digital Network Access Point - The invention is directed to a method and system for supporting wireless RF services over a wired digital data network infrastructure, such as an Ethernet network. The system includes a control unit that can be connected to a base station that supports one or more wireless RF services. The control unit converts the wireless RF signals to an intermediate frequency (IF) that does not interfere with the data network signals and combines the IF signals onto the cable run to a remote network device on the digital data network. The remote network device includes a multiplexer or a low pass filter and a high pass filter that separates the IF signals from the digital data signals on the downlink and combines the IF signals with digital data signals on the uplink over the cable run. The IF signals can be input to an RF module connected to the remote network device which converts the IF signals back to the original RF signals for transmission by a transceiver to wireless devices. Similarly, on the uplink, RF signals received from the wireless devices through the transceiver can be converted to IF for transmission over the cable run to the base station. In one conventional data network each cable run includes 4 pair of conductors and each pair can be used to carry a different IF frequency band. In addition, each pair can be configured to carry more than one IF frequency band using FDD or TDD. Additional signaling channels, such as for management signaling can be provided using differential signaling between 2 pair of conductors. The filters can be implemented using various technologies, including silicon, LTCC and discrete components and active filters can be provided to allow for configuring and tuning of performance in the field. | 06-02-2011 |