Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 8121558 | Local oscillator generator architecture using a wide tuning range oscillator A local oscillator (LO) generator architecture using a wide tuning range oscillator is disclosed. In one embodiment, a wide tuning oscillator based LO generator system includes a wide tuning range oscillator for generating a signal with a first initial frequency or ... | 02/21/2012 |
| 8068791 | Apparatus for protecting receiver in TDD wireless communication system A Time Division Duplex (TDD) switch of a TDD wireless communication system is provided. By its unique arrangement, the TDD switch protects a receiver of the wireless system. The TDD switch includes an isolator connected to an output port of a transmitter, a first tr... | 11/29/2011 |
| 7995973 | Own transmitter interference tolerant transceiver and receiving methods Circuits and methods are disclosed for reducing interference from transmitter leakage in a radio transceiver. An exemplary method for reducing interference from transmitter leakage in a radio transceiver comprises downconverting, filtering, and sampling a radio freq... | 08/09/2011 |
| 7822390 | System for transmitting and receiving data wirelessly This invention relates to a system (100) for communicating wirelessly. The system (100) comprises an inductive antenna circuit (110) for transmitting and receiving inductively coupled signals, a driving means (102, 104) connected to induc... | 10/26/2010 |
| 7610023 | Voltage controlled oscillator band switching system An apparatus, method, and system for voltage controlled oscillator band switching are described. A band switching apparatus may include a reference generation and comparison module, a clock pulse generation module, and a counter and gating module. The reference gene... | 10/27/2009 |
| 7593696 | Tunable radio frequency filter The present invention provides a filter unit cell. The filter unit cell includes a variable capacitor coupled in series between first and second nodes and an inductor coupled in series between the second node and a third node. ... | 09/22/2009 |
| 7437159 | Method and system for overcoming pilot pollution in a wireless communications network An apparatus and method for overcoming pilot pollution in a wireless communications network. The apparatus boosts a preferred pilot signal within a geographical area that is suffering from pilot pollution. The boosted pilot signal is stronger than the pollution in t... | 10/14/2008 |
| 7376396 | Ratiometric transmit path architecture for communication systems A ratiometric transmit path architecture for communication systems and related methods are disclosed. This ratiometric transmit path architecture utilizes a single local oscillator signal and dividers to provide mixing signals for intermediate frequency (IF) mixing ... | 05/20/2008 |
| 7366473 | Method and apparatus for diversity switching control A method and apparatus for diversity switching control are generally described herein. According to one embodiment, a diversity control network is introduced which effectively reduces the number of coaxial cables required to interface with N antennas from the conven... | 04/29/2008 |
| 7366316 | Device to transmit and receive data for remote control of hearing devices A device to transmit and receive data for remote control of hearing devices has a reduced size achieved by the transmitter coils of the transmitter and the receiver coil of the receiver being wound around a common, shared core. Moreover, a protective capacitor that ... | 04/29/2008 |
| 7340280 | Method of configuring base station, and base station A base station and a method of configuring a base station are provided in a cellular telecommunication system, wherein the base station comprises an electrically tunable duplex filter with a tuning range covering at least two parallel sub-bands used in the telecommu... | 03/04/2008 |
| 7324789 | PLL frequency synthesizer architecture for low phase noise and reference spurs A frequency synthesizer for use in a transceiver generates a relatively high reference frequency with fine frequency resolution and low in-band phase noise by using a digital processor to generate a digital reference signal at a finely-tuned reference frequency. A D... | 01/29/2008 |
| 7269144 | Radio transceiver on a chip An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and dow... | 09/11/2007 |
| 7253673 | Multi-phase clock generator and generating method for network controller The present invention discloses a multi-phase clock generator of a network controller for generating a set of multi-phase clocks, and a method thereof. The multi-phase clock generator includes a first gating element and a second gating element. The first gating elem... | 08/07/2007 |
| 7242910 | Self-calibrating radio A self-calibrating radio is described. In one exemplary implementation, a radio signal from its local voltage controlled oscillator. The calibration system automatically calibrates the radio by: (i) receiving a reference signal having a calibrated reference frequenc... | 07/10/2007 |
| 7236810 | Using a low frequency timer to restore timing to a high frequency timer A low frequency timing circuit is used to reestablish a timing signal in a high-frequency timing circuit after the high frequency timing circuit has lost and regained power. The timing of the low frequency circuit is measured against the timing of the high frequency... | 06/26/2007 |
| 7221950 | Auto sensing home base station for mobile telephone with remote answering capabilities The present invention discloses in one embodiment a mobile telephone capable of communicating with a home base station through radio signals. The mobile telephone registers with a home base station before beginning to communicate with the home base station. The home... | 05/22/2007 |
| 7212789 | Tunable duplexer The method and apparatus herein identifies tunable duplexer in a communication system. The tunable duplexer includes a tunable receiver filter, a tunable transmitter filter, a variable receiver phase shifter, and variable transmitter phase shifter. Each filter and p... | 05/01/2007 |
| 7212787 | Wireless audio transmission system A wireless audio transmission and reception system includes a pulse width amplifier, an up-converter, a transmitter, a receiver, a down-converter, an integrator, and a power amplifier to transfer an analog signal to a transducer such as a speaker. The pulse width am... | 05/01/2007 |
| 7194083 | System and method for interfacing plain old telephone system (POTS) devices with cellular networks A system and method for interfacing plain old telephone system (PATS) devices with a cellular network is presented. In a broad sense, the system includes an interface that bridges the POTS devices with the cellular network. The interface is configured to convert POT... | 03/20/2007 |
| 7174185 | Transmission level control method and transceiver apparatus in wireless local loop system A transmission level control method in a wireless local loop system capable of suppressing occurrence of an unnecessarily high transmission level, comprises a step of generating a required reception level corresponding to a classification of data, a step of detectin... | 02/06/2007 |
| 7149191 | Radio transceiver on a chip An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and dow... | 12/12/2006 |
| 7149514 | Cellular docking station A system for communicating with the user of a cellular telephone via the cellular mobile radio (CMR) system and the public switched telephone network (PSTN). A communications interface appends the telephone exchange number of an outgoing communication to include an ... | 12/12/2006 |
| 7139532 | Combined T/R switch with LNA and a method of improving the performance of a receiver In accordance with the present invention, a receiver circuit and a method of controlling voltage pulses, thereby improving the performance of the receiver are provided. The receiver circuit includes a switch for blocking high voltages and for converting voltage sign... | 11/21/2006 |
| 7130609 | Wireless backup telephone device and associated support system A wireless telephone backup device for landline telephone equipment that may be located on the customer side of the landline service connection, typically in a restricted access location, such as an attic, basement, or utility closet. An interconnection circuit in t... | 10/31/2006 |
| 7127217 | On-chip calibration signal generation for tunable filters for RF communications and associated methods On-chip calibration signal generation circuitry is disclosed for filter tuning for radio-frequency communications and associated methods. On-chip circuitry generates a calibration signal that is used to help set a tuning control signal that is received by a tunable ... | 10/24/2006 |
| 7120427 | CMOS wireless transceiver with programmable characteristics A monolithic radio integrated circuit includes a substrate, a set of one or more analog subcircuits on the substrate, a programmable bias current supply on the substrate coupled to the set to provide bias currents to the analog subcircuits of the set including progr... | 10/10/2006 |
| 7113139 | Tunable antenna circuit, particularly for contactless integrated circuit reader An antenna circuit tunable to a determined resonance frequency, includes an antenna coil and adjustable components. The antenna circuit includes a filter having at least one point to tap an electric voltage the amplitude of which forms a pertinent indication for the... | 09/26/2006 |
| 7110725 | Method and apparatus for multipath signal detection, identification, and monitoring for wideband code division multiple access systems Methods to generate a mobile time reference are provided. A representative method includes providing a high frequency clock, providing a low frequency clock, generating a mobile time reference using the high frequency clock, maintaining the mobile time reference usi... | 09/19/2006 |
| 7076215 | Transmitter-receiver A transceiver having an RF receiver, in particular VHF receiver, with digital signal processing in a digital part. The transceiver having an input part, at least one mixer and an intermediate frequency/baseband processing device, having a local channel oscillator, t... | 07/11/2006 |
| 7068171 | Radio transceiver on a chip An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and dow... | 06/27/2006 |
| 7050780 | Radio frequency tranceiver A RF transceiver for AMPS communication includes: a baseband processor for generating a transmission intermediate frequency signal and processing a reception intermediate frequency signal; a local oscillator for generating a local oscillation signal in transmission ... | 05/23/2006 |
| 6987957 | Dual-band frequency converter unit with high operability A dual-band frequency converter unit, for selectively performing frequency conversion between a 2.4-GHz high-frequency-band signal or a 5-GHz high-frequency-band signal and a baseband signal by frequency mixing, includes a local oscillator for generating a local osc... | 01/17/2006 |
| 6980776 | Transceiver apparatus The present invention provides a transceiver apparatus that permits miniaturization even when the antenna thereof is an unbalanced circuit and the transmitter circuit section and receiver circuit section thereof are balanced circuits. The transceiver apparatu... | 12/27/2005 |
| 6980775 | Automatic frequency control (AFC) system and method using an adaptive threshold to improve accuracy of the direct current (DC) component calculation for a received signal A radio device requires a tunable transceiver such that the transceiver can be accurately set to a desired frequency. When a signal with known frequency accuracy is being received, an offset detector can determine the frequency offset generated by the transceiver du... | 12/27/2005 |
| 6952559 | Digital radio ad enhancements A digital radio stores advertisements for substitution during a broadcast for a bumpable advertisement within the broadcast. Upon detecting a bumpable advertisement within a predetermined broadcast period, the digital radio checks for higher priority stored advertis... | 10/04/2005 |
| 6950673 | Cellular phone terminal and intermittent reception control method to be used in a cellular phone terminal A cellular phone terminal can eliminate extra process and save power to be consumed. The cellular phone terminal includes a low speed clock circuit generating a low speed clock to be used for generating a low speed clock used for generation of a preliminarily set in... | 09/27/2005 |
| 6940466 | Enhanced magnetic field communication system Devices and methods are provided to enhance magnetic field communication. One aspect of the present subject matter relates to a method for transmitting and receiving signals using an antenna element electrically connected to a driver and an amplifier. According to v... | 09/06/2005 |
| 6823195 | Ultra short range communication with sensing device and method A method of communicating of the present invention includes broadcasting a signal from a transmission point. The power of the signal is limited such that the signal will attenuate within a predetermined distance from the transmission point. The signal is received by... | 11/23/2004 |
| 6766150 | System and method for tuning a narrowband cavity filter used in a CDMA transmitter There is disclosed a system for tuning a tunable narrowband cavity filter in a base station transmitter of a wireless network. The radio frequency (RF) transmitter comprises: 1) modulation circuitry for modulating an input baseband signal to produce a first RF signa... | 07/20/2004 |
