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| Number | Title | Issue Date |
| 8165531 | Electromagnetic wave-potential communication system A wave-potential detector and a wave-potential radiator are provided that detect and radiate wave-potential signals having longitudinally polarized A vectors, respectively. Wave-potential receivers and transmitters incorporating the wave-potential detector and wave-... | 04/24/2012 |
| 8160502 | System of communication using microwave signals over wireline networks The present invention provides a system for wide-range microwave communications over wireline networks. In an exemplary embodiment, a wide-range transceiver is made having pre-calibrated modular units including an IF radio processing card, an RF transmitter module, ... | 04/17/2012 |
| 7890062 | Fast correction of power measurements of signals having a changing frequency Power measurements of a signal having a changing frequency are corrected by acquiring samples of the signal, matching the samples of the signal to a sequence of frequencies indexed to correction transforms, and applying the correction transforms to the samples of th... | 02/15/2011 |
| 7792494 | Method of communication using microwave signals The present invention provides a method for wide-range microwave communications. In an exemplary embodiment, a wide-range transceiver is made having pre-calibrated modular units including an IF radio processing card, an RF transmitter module, and an RF receiver modu... | 09/07/2010 |
| 7706753 | System of communication using microwave signals over wireline networks The present invention provides a system for wide-range microwave communications over wireline networks. In an exemplary embodiment, a wide-range transceiver is made having pre-calibrated modular units including an IF radio processing card, an RF transmitter module, ... | 04/27/2010 |
| 7606535 | Modular wide-range transceiver The present invention provides a method, apparatus, and processor instructions for wide-range microwave communications. In an exemplary embodiment, a wide-range transceiver is made having pre-calibrated modular units including an IF radio processing card, an RF tran... | 10/20/2009 |
| 7603088 | Multi-channel radiometer imaging system and MMIC chips for use thereof A MMIC includes at least one quadrature hybrid in a plurality of series connected amplifiers connected in two parallel gain stages and operatively connected to the at least one quadrature hybrid such that gain is equalized in the two parallel gain stages. ... | 10/13/2009 |
| 7440766 | Method for employing multipath propagation in wireless radio communications A method of employing multipath propagation in wireless radio communications uses an omnidirectional transmitting/receiving antenna at one end of a transmission link to send an interrogating signal across an environment subject to multipath disturbances to a phase-c... | 10/21/2008 |
| 7353008 | Method and system for optimizing decibel data conversion A Method and System for Optimizing Decibel Data Conversion. This invention provides an ability to convert linear signals into decibel units via digital logic circuitry. The resultant system can present information to users in real-time. This is made possible by perf... | 04/01/2008 |
| 7342954 | Adaptive modulation for wireless networks The invention relates to communication between terminals. Where communication is over an ideal channel then a high throughput modulation scheme can be used. Where the terminals suffer interference or noise, transmission can be modified to a more robust modulation sc... | 03/11/2008 |
| 7302247 | Spread spectrum isolator A circuit package includes first and second units containing functional circuitry. At least one RF isolation link interconnects the first and second units and provides voltage isolation between the first and second units. The RF isolation link provides data between ... | 11/27/2007 |
| 7299012 | Circuit to add and subtract two differential signals An electrical circuit to add and subtract differential input signals may be implemented using distributed differential transmission lines having a length substantially equal to one quarter of a wavelength of the differential input signals according to an effective e... | 11/20/2007 |
| 7249337 | Method for optimizing high frequency performance of via structures A method for enhancing the high frequency signal integrity performance of a printed circuit board (PCB) or backplane is provided. According to one embodiment of the present invention, the method involves the use of S-parameters as the primary cost factors associated... | 07/24/2007 |
| 7236761 | Balanced circuit arrangement and method for linearizing such an arrangement The present invention relates to a balanced circuit arrangement and methods for linearizing and calibrating such a circuit arrangement, wherein linearization is obtained by introducing a load imbalance between the output branches of the balanced circuit arrangement.... | 06/26/2007 |
| 7199664 | Integrated switchless programmable attenuator and low noise amplifier An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 04/03/2007 |
| 7181205 | I/Q calibration The amplitude and phase errors of the modulation and demodulation in a transceiver are corrected by a self-calibration procedure in which a test signal is applied to the baseband input of the transmitter, and the output of the modulator is looped back to the input o... | 02/20/2007 |
| 7170297 | Transmission response measurement system and method of using time gating A method and a measurement system determine a transmission response of a device under test (DUT). The method includes measuring a reflection response from a first port of the DUT while a known reflective termination is on a second port of the DUT, and time gating th... | 01/30/2007 |
| 7072630 | Adaptive data rate determination for a reverse link communication in a communication system A method and apparatus for determining the data rate of a reverse link communication of an access terminal includes receiving a reverse activity bit (RAB) from an access point in the communication system, and passing the RAB to a digital filter to produce a filtered... | 07/04/2006 |
| 7068976 | Method of verifying operation of listening control channel A base station tunes a transceiver to listen to accesses made by mobile terminals on the base station's own control channel. Once the functionality of the transceiver is verified by correlating the known accesses to the received accesses, the base station then tunes... | 06/27/2006 |
| 7065466 | Attenuator test system System for testing attenuators by a flatness and standing wave ratio tests which includes a vector network analyzer (VNA) adapted to be coupled to a device under test (DUT) and which provides an input stimulus signal for the DUT and, when certain conditions are sati... | 06/20/2006 |
| 7062287 | Transmission power control apparatus In a transmission power control apparatus for measuring SIR, which is a ratio of a receive signal to an interference signal, and controlling transmission power of a mobile station in such a manner that the measured SIR will agree with a target SIR, a fading detector... | 06/13/2006 |
| 7047032 | Power controllable wireless mobile communications system of adaptive modulation and coding scheme and method therefor A power controllable wireless mobile communications system using an adaptive modulation and coding scheme includes a signal-to-noise ratio (SNR) extracting unit which extracts a SNR from a received signal that is processed using a predetermined first modulation and ... | 05/16/2006 |
| 7010298 | Method and apparatus for detecting the presence of a wireless network A system and method for detecting the presence of a wireless LAN. The system includes a radio frequency receiver for receiving radio frequency signals and a controller having associated programming for controlling the receiver. The programming also functions to meas... | 03/07/2006 |
| 7002335 | Method for measuring a three-port device using a two-port vector network analyzer A method for vector characterization of a frequency translation device (“FTD”) includes coupling a first signal from a first signal source through a reference directional coupler and through a test directional coupler of an electronic test set to a first port of... | 02/21/2006 |
| 6950670 | Wireless network having joint power and data rate adaptation A wireless network includes transmission power and data rate adaptation based upon signal quality experienced by the user. ... | 09/27/2005 |
| 6933846 | Displacement sensing system A displacement sensing system including an oscillator circuit having a characteristic frequency which varies as a function of a magnetic field in the vicinity thereof, an element whose position relative to the oscillator circuit is varied by a displacement, the elem... | 08/23/2005 |
| 6928373 | Flexible vector network analyzer measurements and calibrations Methods, systems and computer program products for efficiently characterizing devices under test (DUTs) using a vector network analyzer (VNA) are provided. A N-port DUT can be divided as appropriate into multiple sub-devices, or multiple separate devices can be pres... | 08/09/2005 |
| 6915113 | Test apparatus for RF receiver Test apparatus for generating a test signal for use in determining the performance of a receiver, the apparatus comprising signal generating means for generating a test signal; fading means arranged to modify the test signal to represent a signal having the fading c... | 07/05/2005 |
| 6839544 | System and method for remote monitoring of a transmitter in a wireless base station There is disclosed a signal monitoring apparatus for use in a wireless network base station containing a modular main unit for processing baseband signals and a modular radio unit separate from the main unit for transmitting and receiving radio frequency (RF) signal... | 01/04/2005 |
| 6836675 | Method for aiming and adjusting microwave antenna during installation, and apparatus The present invention disclosures a method for aiming antennas during the installation of microwave communication systems. By computerized link quality monitoring mechanism, the software of the computer system can monitor the link quality of the link during the aimi... | 12/28/2004 |
| 6831589 | Radar detector having a multi-period peridocity validator and method therefor A radar detector (10) includes a first period detector (76, 122), a second period detector (96, 120) and a third period detector (86, 124) within a multi-period periodicity validator 38. The first period detector (76, 122) d... | 12/14/2004 |
| 6823175 | Method for simultaneously measuring the propagating characteristics of a plurality of radioelectric channels A process for simultaneously measuring the propagation characteristics of a plurality of radio-frequency channels. According to the invention, from several base stations are transmitted signals whose spectra are interleaved. At the receive end, each of these ... | 11/23/2004 |
| 6804826 | Radio frequency leakage detection system for CATV system A communication circuit carries at least one signal including synchronizing intervals by which output of the signal by first apparatus coupled to the communication circuit is to be synchronized. A communication method includes selecting and modulating at least a por... | 10/12/2004 |
| 6804496 | Communicating in the presence of periodic microwave noise A wireless communication system operating in the presence of the periodic noise signals such as from a microwave oven, the communication system, including at least two wireless communication stations with each station including a transceiver, each such transceiver. ... | 10/12/2004 |
| 6735450 | Method and apparatus for wireless outdoor environment communications networks An access point that is operable under outdoor or industrial environmental conditions may be provided. The access point may include a casing in which an indoor environment access point may be received. The casing may be substantially water-proof and may have rugged ... | 05/11/2004 |
| 6731909 | Method and apparatus using a binary search pattern for identifying an interfering mobile terminal A method for rapidly identifying which one of a plurality of mobile radio frequency (RF) terminals on-board a corresponding plurality of mobile platforms, such as aircraft, accessing a target transponded satellite, is causing interference with one or more non-target... | 05/04/2004 |
| 6711380 | Method and apparatus for reducing interference effects caused by microwave sources A microwave appliance (10) designed to communicate with a plurality of communication devices (11,13, & 15) within a piconet (30) includes a transmitter (24) for communicating with the plurality of communication devices within the p... | 03/23/2004 |
| 6678259 | System and method for line of sight path communication A system and method for broadband communication between a network and a customer premise along the line of sight path utilizes redundant communication paths. The primary communication path is along a first line of sight, and the primary transmitter is con... | 01/13/2004 |
| 6665546 | High speed, point-to-point, millimeter wave dated communication system A point-to-point, wireless, millimeter wave trunk line communications link at high data rates in excess of 1 Gbps and at ranges of several miles during normal weather conditions. This link is combined with an Ethernet network to provide high speed digital... | 12/16/2003 |
| 6643519 | Transmitter power control method and apparatus Automatic control of the power of the transmitters (161 and 162) of a near-end-far-end transceiver pair (121 -141) is achieved by first determining whether the strength of the signals received at near-end and fa... | 11/04/2003 |
