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| Number | Title | Issue Date |
| 8160530 | Multi-beam active phased array architecture In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signal... | 04/17/2012 |
| 8155613 | MIMO Phone In a RF communications system, aspects for single weight antenna system for HSDPA may comprise receiving HSDPA signals via a plurality of receive antennas and individually adjusting a phase of a portion of the received HSDPA signals via a single weight. The phase ad... | 04/10/2012 |
| 8086202 | Method for removing the coupling and correlation of antennas, and wireless device having the function of removing the coupling and correlation of antennas A wireless device, which employs the method and function of removing the coupling and correlation of antennas, picks up the noise components released from inside the device together with the current induced to a second antenna. The wireless device then controls the ... | 12/27/2011 |
| 7865162 | Method and system for single weight antenna system for HSDPA In a RF communications system, aspects for single weight antenna system for HSDPA may comprise receiving HSDPA signals via a plurality of receive antennas and individually adjusting a phase of a portion of the received HSDPA signals via a single weight. The phase ad... | 01/04/2011 |
| 7769358 | Radio system, radio transmitter, and radio receiver A radio system having an improved phase noise characteristic and a thereby improved communication quality, a radio transmitter, and a radio receiver. In the radio system, a radio transmitter (101) transmits a multiplexed signal so multiplexed that a pilot sig... | 08/03/2010 |
| 7684776 | Wireless communication device having variable gain device and method therefor Briefly, in accordance with one embodiment of the invention, a wireless device has an array of antennas. A signal is provided to one of the antenna by two variable gain amplifiers, one of which processes a signal that is shifted in phase compared to the signal proce... | 03/23/2010 |
| 7668525 | System and method of a stereo receiving system A system and method of a stereo receiving system, including a plurality of antennas, a receiving device, a plurality of summing devices, a phase lock loop device, a controllable phase shifter device, and a gain-control device. The plurality of antennas receive RF si... | 02/23/2010 |
| 7657243 | RF transceiver front-end An RF transceiver front-end includes receiver and transmitter front-ends. The receiver front-end includes 1st and 2nd antennas, a ninety degree phase shift module and an LNA module. The 1st and 2nd antennas receive inbound... | 02/02/2010 |
| 7555276 | Devices, methods, and computer program products for controlling power transfer to an antenna in a wireless mobile terminal A wireless mobile terminal includes an antenna, a power amplifier coupled to the antenna, a power detector coupled to an output of the power amplifier, a phase shifter coupled between the output of the power amplifier and the antenna, and a controller coupled to the... | 06/30/2009 |
| 7536160 | Wideband phase shift device The invention relates to a wideband phase shift device. A phase shift φ is introduced on the fixed frequency local oscillator. The principle of the invention is to realise a double translation of the input signals. The phase variation introduced at the level of the... | 05/19/2009 |
| 7440739 | Smart antenna device with increased operation speed and complex smart antenna device using smart antenna device A smart antenna device includes: first and second weighting units provided to correspond to two antennas disposed apart from each other so as to weight received signals inputted from the antennas, respectively; an operating unit that obtains a ratio of a weight of t... | 10/21/2008 |
| 7406337 | Wireless communication system and method using multiple antennas A wireless communication system, and method using multiple antennas, includes a base station that applies predetermined weight vectors to multi-user signals and transmits the multi-user signals through a plurality of transmission antennas, and a plurality of mobile ... | 07/29/2008 |
| 7400872 | Radio receiver for selecting appropriate diversity antennas by comparing correlation values and a method for the same In the diversity receiver, the RF switcher switches the received signals to supply them to the RSSI power detector equipped with diversity function. Subsequently, the RSSI power detector with diversity function feeds the RF switcher with an antenna switching signal.... | 07/15/2008 |
| 7400867 | Radio broadcast receiver A radio broadcast receiver is provided which reduces the degradation in quality of diversity-received signals. When a difference in level between a reception signal of a main antenna and a reception signal of a sub antenna is less than a predetermined threshold valu... | 07/15/2008 |
| 7373127 | Digital beam forming for communications systems An antenna-receiver communications system and method is provided to mechanize multibeam mobile antenna-receive subsystems. Digital beam forming for modern wideband mobile communications systems is provided. In an aspect, subsystems can simultaneously receive, acquir... | 05/13/2008 |
| 7369832 | Receiving diversity apparatus and method of mobile station for high data rate type mobile communication system A receiving diversity apparatus and method for a mobile station in an HDR mobile communication system measures C/I values of pilot channels on respective antennas, measures a C/I value of in-phase combined pilot channel, and then selectively performs one of a select... | 05/06/2008 |
| 7368974 | Signal adder circuit capable of removing effects due to phase error or amplitude error of I and Q signals A signal adder circuit includes: an adding unit that includes at least a pair of amplification elements in which a constant current flows between ground terminals and a ground, input signals having different phases are input to input terminals, and output terminals ... | 05/06/2008 |
| 7369485 | Wireless receiver for sorting packets A wireless receiver that sorts packets including a packet detector, multiple correlators, and multiple packet processors. Each correlator correlates a received signal according to packet type. Each packet processor processes the received signal according to packet t... | 05/06/2008 |
| 7362799 | Method and apparatus for communication signal resolution Embodiments of the present invention provide methods and apparatuses for determining a parameter value for each of a plurality of communication signals received concurrently as a composite signal. The parameter value of each communication signal is within a correspo... | 04/22/2008 |
| 7363016 | Diversity receiving apparatus and method A communication system comprises a first signal adjusting unit for amplifying a first signal received by a first antenna; a second signal adjusting unit for amplifying and phase-shifting a second signal received by a second antenna to generate a phase-shifted signal... | 04/22/2008 |
| 7362168 | Audio amplifier In a first aspect, the invention provides an audio amplifier. A regulator reference signal corresponding to an input audio signal is generated by regulator reference generator. A power signal is generated corresponding to the regulator reference signal by a voltage ... | 04/22/2008 |
| 7342986 | Digital PLL device A phase-locked-loop device includes a clock generator for generating a reference clock based on a binarized playback signal and a frequency of run-length data and for generating N-phase clocks using the reference clock, a pulse-length measuring device for measuring ... | 03/11/2008 |
| 7340282 | Apparatus for forward beamforming using feedback of multipath information and method thereof Disclosed are an apparatus for forward beamforming using a terminal feedback and a method thereof. The base station estimates an angle of arrival (AOA) range of a user signal from reverse link received data and calculates a plurality of beamforming weights steering ... | 03/04/2008 |
| 7330068 | Adjusting coefficients of a filter Demodulation apparatus includes a transversal filter characterized by coefficients adjusted by a coefficient determiner responsive to a constant modulus error signal and variable mode error signal related to the output of a spectral mean frequency detector having it... | 02/12/2008 |
| 7327994 | Architecture for multiple-antenna systems The invention is a system and method for sharing components of a single-path receiver or transmitter system multiple antennas. Specifically, according to one embodiment of the present invention, multiple antennas simultaneously share an analog-to-digital converter u... | 02/05/2008 |
| 7324794 | Phase combining diversity Embodiments of methods of receiving transmitted signals are disclosed. The methods include a first antenna receiving a second signal, a second antenna receiving a second signal, adjusting a phase relationship between the first signal and the second signal, combining... | 01/29/2008 |
| RE39982 | Diversity circuit for magnetic communication system A magnetic communication system includes a transmitter have a single coil transducer, and a receiver having a three orthogonally oriented coil transducers. The signal processing circuitry in the receiver adjusts the phases of the signals received by the three transd... | 01/01/2008 |
| 7310503 | Diversity reception device and diversity reception method The circuit size of a diversity receiver for an orthogonal frequency division multiplexing signal is reduced, and the diversity effect is increased, by providing a power ratio comparator that calculates a difference value as a ratio of powers derived from channel es... | 12/18/2007 |
| 7301991 | Fading frequency decision device and method Fading frequency decision device and method are provided. An inner product value of pilot symbols which are time multiplexed in a control channel which is parallel multiplexed with a data channel, an inner product value of pilot symbols in a channel in which data sy... | 11/27/2007 |
| 7289827 | Method and apparatus for performing directional re-scan of an adaptive antenna An antenna for use with a receiver in a wireless communications system includes antenna elements for generating antenna patterns, and a first module for applying weights to a signal received at each of the antenna elements to generate a selected one of the antenna p... | 10/30/2007 |
| 7286855 | Method and apparatus for adaptive transmission beam forming in a wireless communication system A method for forming an adaptive phased array transmission beam pattern at a base station without any knowledge of array geometry or mobile feedback is described. The approach is immune to the problems which plague methods which attempt to identify received angles o... | 10/23/2007 |
| 7286618 | Digital AGC circuit To perform gain adjustment of the amplitude of a binary phase shift keying (BPSK) wobble signal from a DVD to enable high-precision demodulation of address information, a peak detection circuit detects a peak value in a time period equal to or more than a half perio... | 10/23/2007 |
| 7266356 | Mobile communication terminal apparatus and mobile communication method A mobile communication terminal apparatus includes an antenna unit configured to select antenna radiation characteristics, and receives a first signal transmitted from transmitting station according to the selected antenna radiation characteristic, a transmitter whi... | 09/04/2007 |
| 7260418 | Multi-element phased array transmitter with LO phase shifting and integrated power amplifier A fully integrated CMOS multi-element phased-array transmitter (transmitter) includes, in part, on-chip power amplifiers (PA), with integrated output matching. The transmitter is adapted to be configured as a two-dimensional 2-by-2 array or as a one dimensional 1-by... | 08/21/2007 |
| 7257078 | Multiple antenna OFDM transceiver and method for transceiving An RF receiver includes a plurality of OFDM modules. The OFDM modules include receiver antennas for substantially simultaneously receiving a plurality of transmission signals transmitted via a single frequency band having a plurality of sub-channels. Further include... | 08/14/2007 |
| 7248898 | Radio device, transmission/reception directivity control method, and transmission/reception directivity control program A radio device includes an array antenna including a plurality of antennas; an adaptive array processing unit multiplying signals provided from the respective antennas of the array antenna by receive weights, and thereby extracting a signal received from desired ano... | 07/24/2007 |
| 7245923 | Mobile device and geographic information system background and summary of the related art The present invention provides a system and mobile device for providing geographic information to a user. The system includes a mobile device that is wirelessly connected to a geographic database. The mobile device includes a plurality of sensors for determining a f... | 07/17/2007 |
| 7245882 | Method and apparatus for a signal selective RF transceiver system Method and apparatus to dynamically configure the signal reception selectivity of a plurality of transceivers is described. In one embodiment, a transceiver includes a receiver circuit having two or more filter circuits. Each of the filter circuits is configured to ... | 07/17/2007 |
| 7242338 | Differential digital-to-analog converter Briefly, in accordance with one embodiment of the invention, a differential digital-to-analog converter utilized in a transmitter path of a transceiver utilizes a differential R2R architecture. Such a differential digital-to-analog converter may be utilized in highe... | 07/10/2007 |
| 7239275 | Methods and systems for tracking signals with diverse polarization properties Methods and systems for tracking signals with diverse polarization properties address both sensitivity and antenna tracking performance issues. In one embodiment, complex weightings for matching a polarization of an incident signal on a data channel are determined, ... | 07/03/2007 |
