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| Number | Title | Issue Date |
| 8185069 | Wired and wireless 4G and 3G cellular, mobile and RFID systems A method for receiving and processing in a wireless mobile unit a cable connected signal and Adaptive Coding and Modulation (ACM) in a 4G or a 3G wireless system. Transmitting in a mobile cellular unit a wire connected received and processed signal in a wireless tra... | 05/22/2012 |
| 8086193 | Method of configuring a multi-network terminal and an associated multi-network terminal A method and apparatus are provided for configuring a multi-network telecommunications terminal, which communicates with a number of telecommunications networks offering a plurality of telecommunications services. The terminal includes a plurality of interfaces for ... | 12/27/2011 |
| 8019296 | Selective scanning for WLAN coverage by a multi-mode device Methods and systems are provided for selective scanning for WLAN coverage by a multi-mode device. In one embodiment, a multi-mode device determines whether it is charging and whether it is authenticated via a WLAN. If the device is charging and so authenticated, it ... | 09/13/2011 |
| 7986927 | Semiconductor integrated circuit device and high-frequency power amplifier module Upon application of an on-state voltage to a control terminal, an antenna switch provided between an antenna terminal and a transmission terminal is turned on, and a transmission signal of a PCS/DCS system passes from the transmission terminal through the antenna te... | 07/26/2011 |
| 7783271 | Method and apparatus for transmitting and receiving signals A method and apparatus for receiving a radio frequency signal and a method and apparatus for transmitting a modulation signal in a multiple channel radio system. The method for receiving the radio frequency signal involves mixing the radio frequency signal with a de... | 08/24/2010 |
| 7715812 | RF power amplifier Transmission in DCS1800, PCS1900, and WCDMA1900 is performed by a common second RE power amplifier. In DCS1800 and DCS1900, transmission power is set in a high transmission power mode at 33 dBm by a high-gain input amplifier to activate an internal voltage follower ... | 05/11/2010 |
| 7630694 | Remote access unit and optical network for bidirectional wireless communication using the same Disclosed is a remote access unit for transmitting and receiving upstream and downstream data in which channels having different transmission scheme are multiplexed, and an optical network for bi-directional wireless communication using same. The remote access unit ... | 12/08/2009 |
| 7532869 | Automatic power level control circuit for a transceiver device An automatic power level control circuit provides output power control of a transmitter device as used in wireless LAN applications in that an output signal is detected and a corresponding control voltage of a DAC in the base band section is corresponding adjusted. ... | 05/12/2009 |
| 7505743 | Dual band transmitter having filtering coupler The invention provides a dual band transmitter available for a mobile communication terminal such as mobile phone, in which a first RF amplifier 111 amplifies the power of a high band signal BS1 at a first amplification factor that is determined accord... | 03/17/2009 |
| 7424271 | Multi-mode and multi-band RF transceiver and related communications method A multimode communications system includes a first communications module, a transmission module, a switch and a second communications module. The first communication module has a frequency modulator for modulating a dividing ratio to adjust an oscillating signal and... | 09/09/2008 |
| 7412239 | Dual mode wireless communication device using IrDA that doesn't comply with IrDA standard as the default mode and the second mode is compliant with IrDA standard A data transmitter includes (a) first communication means performing data transmission according to IrDA Standard, (b) second communication means performing data transmission that does not comply with the IrDA Standard and (c) means for switching between a process p... | 08/12/2008 |
| 7403750 | Reuse of digital-to-analog converters in a multi-mode transmitter A transmitter for generating modulated signals is shown, wherein in a first-type operating mode, a first digital signal is input into a digital-to-analog converter to obtain a first analog signal that is input into a first-type unit, in which a first-type modulated ... | 07/22/2008 |
| 7385961 | Contending for the medium with a mixture of backwards-compatible wireless devices In a wireless network in which a central network device (e.g., an access point) communicates with multiple generations of mobile wireless devices that are backward compatible but not forward compatible, each generation of device may be selectively put into a mode th... | 06/10/2008 |
| 7366480 | Radio communication device In the radio communication device of the present invention, a first carrier transmission modulation wave outputted from a first signal generator 101 is amplified by a first power amplifier 103 and transmitted from a first antenna element 107 thr... | 04/29/2008 |
| 7366485 | Multimode wireless transmitter and a portable wireless device using the same The circuits of a multimode wireless transmitter are complex and large, and thus difficult to incorporate in a portable wireless device. This problem is solved for a multimode wireless transmitter by enabling the first frequency mode circuit and the second frequency... | 04/29/2008 |
| 7346318 | High frequency power amplifier component and radio communication system In radio communication system that is able to transmit in two or more modulation modes, e.g., one modulation mode when phase shifts are performed and another modulation mode when phase shifts and amplitude shifts are performed, the disclosed invention can avoid that... | 03/18/2008 |
| 7336934 | Transmission modulation apparatus Linear transmission modulation apparatus 100 has high frequency amplifier 102 that amplifies the high frequency phase modulation signal of a high frequency signal and power source voltage controller 101 that amplifies the baseband amplitude modu... | 02/26/2008 |
| 7336935 | Dynamic power control circuit of wireless communication device The present invention is to provide a dynamic power control circuit for a wireless communication device, which comprises a power detector, a comparator, a low pass filter and an adder disposed between a radio frequency auto-gain control circuit and an antenna thereo... | 02/26/2008 |
| 7308281 | Optimal two-leg histeresys for power control and phy mode switching control in adaptive phy mode systems In radio transmission systems with point-to-point and point-to-multipoint topology a master station and one or several terminal stations are defined as well as a downstream channel from the master station to the terminal stations and an upstream channel from the ter... | 12/11/2007 |
| 7304537 | Power amplification apparatus of a portable terminal The present invention relates to a power amplification circuit of a mobile device for improving the efficiency and the linearity properties of the power amplifier. In one embodiment, the power amplifier improves these properties by controlling the input voltage of t... | 12/04/2007 |
| 7283840 | Reconfigurable analog baseband for a single-chip dual-mode transceiver A dual-mode analog baseband circuit is implementable on a single IC with reduced chip area. The baseband portion of the IC includes a single dual-mode complex filter that is reconfigurable to be a filter for Bluetooth signals or for wireless local area network (wire... | 10/16/2007 |
| 7280067 | Radar detector and radar detecting method for WLAN systems according to 802.11 wireless communication standards The present invention relates to a radar detector and a radar detecting method for WLAN systems according to 802.11 wireless communication standards, and particularly concerns the radar detection for 802.11 h dynamic frequency selection mechanism. The essence of the... | 10/09/2007 |
| 7266350 | Radio frequency tuner A tuner for analogically and digitally modulated signals comprises a single tuner arrangement for converting any selected analog or digital channel to baseband or zero 1F quadrature signals. Simple analog low pass filtering is applied before conversion in an ADC to ... | 09/04/2007 |
| 7245888 | Phone energy management for low battery voltages The present invention provides a power supply arrangement with a DC-to-DC converter (10) for providing at least one supply voltage to a load (20, 30, 40) from an energy source (11). The converter comprises means for inputting (4) a batter... | 07/17/2007 |
| 7245913 | Handset mode selection based on user preferences A multi-mode wireless device is provided to communicate with a plurality of networks, at least some of the networks having different modes of communication. The multi-mode wireless device has a network selection component to monitor at least some of networks and swi... | 07/17/2007 |
| 7245180 | Intelligent RF power control for wireless modem devices A bypass circuit is disclosed for use with lower power supply voltage PC cards. The bypass circuit controls the power supply voltage fed to a power amplifier when switching between a lower power 8-PSK modulation mode and a higher power GMSK modulation mode. A step-u... | 07/17/2007 |
| 7221915 | Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture The invention relates to a system for electromagnetic processing of an input wave involving receiving a modified signal derived from two or more signals that represent the input wave when combined; and regulating the modified signal using at least one analog signal ... | 05/22/2007 |
| 7215193 | Method and apparatus for limiting power amplifier voltage excursions A power amplifier circuit includes a circuit topology with first and second switching elements. The first and second switching elements have a closed state and an open state, wherein current flows between the switching elements when they are both in the closed state... | 05/08/2007 |
| 7190290 | Method and apparatus for addressing receive band noise problems associated with the use of a digital power amplifier An apparatus and method for biasing at least one transistor of a Radio Frequency Digital to Analog Converter (RFDAC). The apparatus including a direct base current injection circuit for injecting a DC current waveform directly into a base terminal of the transistor.... | 03/13/2007 |
| 7184716 | Low cost/low power analog transceiver architecture A time division duplex (TDD) single sideband (SSB) transceiver includes a transmitter adapted to input an analog audio signal, sample the analog audio signal, and to output an SSB frequency shift keyed (FSK) signal corresponding to the analog audio signal, the SSB F... | 02/27/2007 |
| 7171168 | Ramp signal with boost portion preceding a time slot A transmitter includes a power amplifier which is capable of both linear and non-linear operation, controlled by first and second control loops. A power controller includes a capacitive component, and controls the gain of the power amplifier. A ramp generation circu... | 01/30/2007 |
| 7164892 | Dual-mode transmitter for railroad crossings A transmitter receivable by broadcast band receivers in nearby vehicles, comprising a first signal generator for simultaneously providing a plurality of selectively spaced carriers having frequency spacings corresponding to the individual channels of the band to be ... | 01/16/2007 |
| 7155251 | Mobile radio apparatus and radio unit A plurality of amplifiers corresponding to a plurality of types of transmitting signals are provided to amplify the transmitting signals to a power level at which they can be transmitted by radio. The amplifiers are driven by both power and a bias. The bias is suppl... | 12/26/2006 |
| 7146189 | Apparatus for wireless device to alter performance of wireless communication link An apparatus for providing additional processing power to a portable, wireless, communication device. The apparatus includes a housing detachably connectable to the portable, wireless, communication device and digital circuitry carried by the housing. The digital ci... | 12/05/2006 |
| 7139537 | Transmission output circuit and mobile communication terminal A transmission output circuit can always perform correct transmission power control, and can detect the abnormality of transmission power, which interferes with other users, and part troubles, which cause erroneous transmission. The transmission output circuit inclu... | 11/21/2006 |
| 7133648 | Bidirectional multi-gigabit transceiver Method and apparatus for a bidirectional transceiver cell is described. Each bidirectional transceiver cell has a transmitter and a receiver, where the transmitter and the receiver share a phase-locked loop. The bidirectional transceiver cell is configured to act as... | 11/07/2006 |
| 7127216 | Integrated circuit and method for receiving and transmitting signals of different frequency bands An integrated circuit and method for receiving and transmitting signals of different frequency bands utilizes a switching device on a bypass current path to selectively route incoming and outgoing signals by circumventing a capacitive device on a receive signal path... | 10/24/2006 |
| 7120402 | Method and apparatus for a high performance and high dynamic range baseband power control system A method and system controls transmit power by combining the advantages of digital attenuation and analog baseband step attenuators by calibration to overcome the limitations of analog step attenuators. The calibration technique uses highly accurate digital attenuat... | 10/10/2006 |
| 7113805 | Method of combining fixed-network telephone and mobile radio telephone communications The invention relates to a method for combining landline network and mobile telephony with the use of at least a home cell, a landline network and a mobile network, whereby the user uses a dual mode terminal that operates both in cellular mode and in cordless mode. | 09/26/2006 |
| 7110731 | Dual-mode transmitter An emergency and non-emergency transmitter receivable by broadcast band receivers in nearby vehicles, comprising a first signal generator for simultaneously providing a plurality of selectively spaced carriers having frequency spacings corresponding to the individua... | 09/19/2006 |
