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| Number | Title | Issue Date |
| 8000668 | Transmit/receive circuit with PIN diodes Structurally simple transmit/receive circuits for hearing devices are to be able to be deployed for higher frequencies as well. It is therefore proposed according to the invention that at least two PIN diodes should be connected in an anti-parallel manner between th... | 08/16/2011 |
| 7599674 | Overload protection for receiver front end An embodiment is a receiver for a communications system that may substantially block unwanted signals in a frequency range to protect the receiver from overload. Simultaneously, the receiver of an embodiment substantially passes a desired signal so that its informat... | 10/06/2009 |
| 7567787 | Apparatus and method of feeding internal calibration signal through electro-static discharge protection circuitry An apparatus and method for internally calibrating a direct conversion receiver (DCR) through feeding a calibration signal via ESD protection circuitry is disclosed. The apparatus includes an internal signal generator for generating a calibration signal, a front-end... | 07/28/2009 |
| 7440773 | Method for protecting user data in a personal digital assistant (PDA) telephone Provided is a method for protecting user data in a PDA telephone having functions of a PDA and a telephone. The method includes checking a voltage of the PDA telephone through a first low voltage sensor when both the PDA and the telephone are in OFF states and prohi... | 10/21/2008 |
| 7369831 | Radio wave receive, radio wave reception integrated circuit, wave clock, and repeater An SW control circuit turns ON and OFF a switch circuit provided between a reception antenna and an RF amplifier circuit, based on a noise removal control signal which is generated by a timing generation circuit and has a constant pulse width and a constant pulse in... | 05/06/2008 |
| 7358923 | 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... | 04/15/2008 |
| 7327993 | Low leakage local oscillator system Local oscillator apparatus comprising communication signal terminals for a communication signal, especially in a receiver or a transmitter, and a controlled frequency oscillator for producing a local oscillator signal. The local oscillator also includes a reference ... | 02/05/2008 |
| 7289801 | System and method for using RSSI to invoke features of a wireless device A system and method for invoking one or more features of a wireless device when a signal strength of a channel approaches or drops below an RSSI threshold of the channel is disclosed. An embodiment of the invention includes the steps of (1) obtaining the RSSI thresh... | 10/30/2007 |
| 7283797 | System and method of improving the dynamic range of a receiver in the presence of a narrowband interfering signal An apparatus, system, and method improve the dynamic range of a receiver in the presence of a narrowband interfering signal. An error rate of a received signal is computed, and the input intercept point of a low noise amplifier in the receiver is adjusted based on t... | 10/16/2007 |
| 7233772 | Adaptive radio transceiver with filtering An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 06/19/2007 |
| 7224949 | ESD protection circuit for radio frequency input/output terminals in an integrated circuit An integrated circuit comprises an ESD protection circuit including an inductor coupled between an input terminal and a ground terminal at which an RF signal is applied. The inductor is designed so as to provide a sufficient current capability required in typical ES... | 05/29/2007 |
| 7212801 | Electrostatic protection circuit with impedance matching for radio frequency integrated circuits An electrostatic-discharge/impedance-matching circuit for use in radio frequency (RF) integrated circuits. The electrostatic-discharge/impedance-matching circuit includes at least one shunt circuit operable to shunt current related to an over-voltage condition and a... | 05/01/2007 |
| 7206605 | Radio receiver A radio receiver disclosed is composed of a signal processing part, which includes a receive band pass filter 2 and a receive low noise amplifier 3, to process receive signal and discharge gas with time, the signal processing part being cooled by the c... | 04/17/2007 |
| 7200373 | Antenna detection and diagnostic system and related method An antenna detection and diagnostic system and associated method, including current and voltage detection circuits, are disclosed for detecting antenna failure mechanisms for integrated radio receivers. Integrated current limit detection circuitry is disclosed that ... | 04/03/2007 |
| 7187664 | Method and arrangement in a communication system The invention relates to a method and an Automatic Gain Control (AGC) unit for automatically minimizing the impact of inter-cell interference and/or interference between co-existing systems. The AGC unit is located within a transceiver unit, the transceiver unit is ... | 03/06/2007 |
| 7151464 | Drive device with radio frequency control A drive device with radiofrequency control includes a motor, a radiofrequency receiver for receiving radiofrequency signals and for controlling the motor. Electrical conductors provide power for both the motor and the radiofrequency circuit. The antenna is connected... | 12/19/2006 |
| 7149480 | Receiver device A receiver device for receiving incoming radio waves by using a plurality of antennas, which is capable of improving the maximum input sensitivity is provided. In the receiver device, a switching unit switches to an antenna having the lower antenna gain as a new rec... | 12/12/2006 |
| 7142884 | Combined front-end circuit for wireless transmission systems A front-end circuit is provided for a communication terminal device that is designed for a multi-band and/or multi-mode operation. Various embodiments are provided that are suitable for mobile radiotelephone devices of the third generation and, in particular, for tr... | 11/28/2006 |
| 7133653 | Receiver and composite component having local oscillator components and mixing circuit integrally formed on semiconductor substrate A receiver and a composite component for preventing noise produced by sneaking of a local oscillation signal. An FM receiver comprises a high-frequency amplifier circuit 11, a mixing circuit 12, a local oscillator 13, intermediate-frequency filt... | 11/07/2006 |
| 7123883 | Systems and methods that employ a balanced duplexer The present invention relates to systems and methods that employ a novel balanced duplexer that can be utilized to facilitate concurrent signal transmission and reception. The systems and methods can be employed within mobile devices such as cell phones and utilize ... | 10/17/2006 |
| 7099647 | Single chip direct conversion transceiver for reducing DC offset and method of manufacturing the same A single chip direct conversion transceiver that includes a substrate on which a mixer unit and a local oscillator are provided as a circuit, and a positive hole formed between the mixer unit and the local oscillator and filled with a conductive plug to block signal... | 08/29/2006 |
| 7088975 | Automatic gain control system and method using multiple local AGC loops A receiver comprises a first Variable Gain Amplifier (VGA) that amplifies an input signal in accordance with a first gain to produce a first amplified signal. The first gain is controlled based on the first amplified signal. The receiver includes a second VGA that p... | 08/08/2006 |
| 7085118 | Electrostatic discharge protection component On the surface of a ceramic sinter, at least an external electrode for input, an external electrode for output, and external electrodes for grounding are disposed, and the ceramic sinter includes an inductor electrically connected to the external electrode for input... | 08/01/2006 |
| 7076201 | Low cost VSAT MMIC transceiver with automatic power control A very small aperture terminal (VSAT) transceiver of a VSAT terminal has a ceramic substrate board with transmitter, receiver and local oscillator circuits, including microwave monolithic integrated circuit (MMIC) chips positioned on the ceramic substrate board. A m... | 07/11/2006 |
| 7053571 | Electric motor control circuit having reduced electromagnetic interference emissions An electric motor control having reduced electromagnetic interference (EMI) emissions includes a motor controller, a switch, and a power converter. The motor controller upon receipt of a control signal causes the switch to toggle between two or more states. In one s... | 05/30/2006 |
| 7046973 | Method and circuitry for high power amplifiers with voltage conversion to avoid performance degradation, system shutdown and permanent damage in case of worst case data pattern A power amplification system for wireless communications monitors wireless signal sequences for worst case or problematic data patterns likely to cause the output voltage of a voltage converter supplying the power amplifier to drop. The signal sequences, which may b... | 05/16/2006 |
| 7026646 | Isolation circuit An isolation circuit includes a first pad adapted to receive a control signal and a second pad adapted to receive another signal. A third pad is coupled to a microelectronic die and a device is provided to transfer the other signal from the second pad to the third p... | 04/11/2006 |
| 6999739 | Stacked FET receiver method and apparatus A receiver method and apparatus is presented. Signals are received from a high-voltage environment to a low-voltage environment using low-voltage devices, such as low-voltage FETs. A reference stage (i.e., first stage) provides the reference point for an input signa... | 02/14/2006 |
| 6993297 | Apparatus and methods for tuning antenna impedance using transmitter and receiver parameters According to some embodiments of the present invention, an impedance transformation circuit is provided for use with a transmitter, a receiver, and an antenna. The transmitter may provide transmission signals for transmission by the antenna. The antenna may provide ... | 01/31/2006 |
| 6967348 | Signal sharing circuit with microelectric die isolation features A signal sharing circuit includes a first pad adapted to receive a signal and a first sharing device associated with a first microelectronic die. The first sharing device is adapted to selectively share the signal with at least a second microelectronic die on one si... | 11/22/2005 |
| 6947840 | GPS receiver with improved immunity to burst transmissions GPS signals are typically weak and thus easily interfered with by other radio transmissions in the same or adjacent frequency bands. Interference can be especially problematic when the GPS receiver is co-located with a communications device that includes a radio tra... | 09/20/2005 |
| 6930872 | Spark gap device The present invention provides an over-voltage surge protection device comprising a printed circuit board having a signal carrying conductive member having a plurality of nodes positioned therealong, and a conductive member running to ground also having a plurality ... | 08/16/2005 |
| 6906526 | Non-intrusive cable connection monitoring for use in HFC networks A method and an apparatus are employed for individually monitoring the connectivity status of cables connected at a cable modem termination system (CMTS), where the cables conduct upstream and downstream RF communication signals. The monitoring is self-contained wit... | 06/14/2005 |
| 6799058 | Apparatus and method for switching service class in response to generated heat in a GPRS terminal An apparatus and method for switching a GPRS (General Packet Radio Service) service class according to the heat generated by at least one specific element in a GPRS terminal during a GPRS mode of operation. A temperature sensor measures a temperature of a specific e... | 09/28/2004 |
| 6781424 | Single chip CMOS transmitter/receiver and method of using same A single chip RF communication system and method is provided including a transmitter and a receiver. The RF communication system in accordance with the present invention can include an antenna that receives/transmits RF signals, a PLL that generates multi-phase cloc... | 08/24/2004 |
| 6754510 | MEMS-based bypass system for use with a HTS RF receiver A HTS-based RF receiver includes a cryocooler and a cryogenic enclosure in thermal communication with the cryocooler. The cryogenic enclosure contains a HTS filter and a LNA therein. A first MEMS bypass switch is positioned between a RF input and the HTS filter, the... | 06/22/2004 |
| 6571110 | Cryoelectronic receiver front end for mobile radio systems The present invention relates to a novel use of cryoelectronic equipment to implement an extremely sensitive and stable receiver front end for UHF, microwave, and millimeter wave applications. The invention is particularly applicable to base station recei... | 05/27/2003 |
| 6556811 | Transceiver unit An air cooled transceiver enclosure which includes multiple cooling posts about the enclosure. The transmitter and receiver antennas are planar mounted above the cooling posts and the cooling posts are selected so as not to interfere with the radiation an... | 04/29/2003 |
| 6553214 | Active window glass antenna system with automatic overload protection circuit A window glass antenna system for the reception of AM and FM radio broadcasts in an automobile includes an antenna grid applied to a window of a vehicle, that is electrically separate from a heater grid applied to the rear window. An antenna module connec... | 04/22/2003 |
| 6483355 | Single chip CMOS transmitter/receiver and method of using same A single chip RF communication system and method is provided including a transmitter and a receiver. The RF communication system in accordance with the present invention can include an antenna that receives/transmits RF signals, a PLL that generates multi... | 11/19/2002 |
