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| Application No. | Application Title | Issue Date |
| 20120106403 | TRANSMISSION CIRCUIT A transmission circuit according to the present invention includes: an amplitude signal driving section (220) that generates a control voltage based on an amplitude signal in a high-output mode, and generates a control voltage at a predetermined level and a bias ... | 05/03/2012 |
| 20120071115 | Method of Controlling RF Transmissions to Mitigate Interference with Critical Care Medical Equipment Various methods of mitigating RF inference with one or more critical care medical devices is provided, wherein a predetermined threshold energy acceleration value is associated with the one or more critical care medical devices that, if exceeded, will cause RF inference... | 03/22/2012 |
| 20120040630 | AMPLITUDE MODULATION CIRCUIT IN POLAR TRANSMITTER AND METHOD FOR CALIBRATING AMPLITUDE OFFSET IN POLAR TRANSMITTER An amplitude modulation circuit in a polar transmitter includes a digital-to-analog converter (DAC), a filter, a gm stage, and a calibration module. The DAC is arranged to be coupled to an amplitude modulation signal input in a normal mode. The filter is coupled to the ... | 02/16/2012 |
| 20110280340 | Frequency Synthesis An apparatus including a spin torque oscillator configured to receive an input electric current and to produce a radio frequency output signal; and a tunable current source for providing an input electric current to the spin torque oscillator.... | 11/17/2011 |
| 20110244817 | FORWARD LINK SIGNALING Exemplary embodiments are directed to forward link signaling via transmitter detuning A method may include selectively detuning a circuit to adjust an amplitude of an associated transmit signal based on data to be transmitted. The method may also include selectively ret... | 10/06/2011 |
| 20110092173 | TRANSMITTING UNIT THAT REDUCES PAPR USING OUT-OF-BAND DISTORTION AND METHOD THEREFOR A transmitting unit (12) clips a communication signal (14) to form a threshold-responsive signal (36, 36′) which includes in-band distortion (40) and out-of-band distortion (38). A portion of the out-of-band distortion (38) is... | 04/21/2011 |
| 20100311329 | METHOD AND SYSTEM FOR OBTAINING MAXIMUM GAIN OF A PASSIVE UPCONVERSION MIXER UTILIZED IN A TRANSMITTER A RF transmitter is operable to transmit a signal at a frequency specified by the Bluetooth protocol. A passive upconversion mixer, which comprises a pair of MOSFET switches, is utilized inside the RF transmitter. The passive upconversion mixer is operable to receive an... | 12/09/2010 |
| 20100297965 | AMPLITUDE MODULATION CONTROLLER FOR POLAR TRANSMITTER Apparatus for generating a modulation signal for use in modulating the power supply of a power amplifier uses coarse and fine control for controlling the amplitude of the modulation signal, and thereby controlling the output power of the power amplifier. The modulation ... | 11/25/2010 |
| 20100248657 | POWER CORRECTION MODULE FOR POWER AMPLIFIERS A power correction module for use with an amplifier driving a load impedance is configured to sample the supply current and to cause a change in a control voltage, which corrects the supply voltage in response to a change in the load impedance. The supply voltage is cor... | 09/30/2010 |
| 20100184389 | WIRELESS COMMUNICATION UNIT, INTEGRATED CIRCUIT AND METHOD FOR BIASING A POWER AMPLIFIER A wireless communication unit (100) comprises a transmitter (120) arranged to transmit an envelope modulated signal. The transmitter (120) comprises a radio frequency power amplifier (124) operably coupled to a logarithmic detector (210, 3... | 07/22/2010 |
| 20100184390 | METHOD AND SYSTEM FOR EXTENDING DYNAMIC RANGE OF AN RF SIGNAL Aspects of a method and system for extending dynamic range of an RF signal are provided. In this regard, an amplitude signal that is representative of an amplitude of a pair of baseband signals may be generated, an amplitude of the generated amplitude signal may be modi... | 07/22/2010 |
| 20100167668 | METHOD AND DEVICE FOR MONITORING A RADIO-FREQUENCY TRANSMITTER DEVICE IN A MAGNETIC RESONANCE TOMOGRAPHY SYSTEM In a method and device for monitoring a radio-frequency transmit device of a magnetic resonance tomography system, having a transmitter antenna system that has a number of transmit channels, during a magnetic resonance measurement of an examination subject, a reference ... | 07/01/2010 |
| 20100151802 | AMPLITUDE MODULATION CIRCUIT IN POLAR TRANSMITTER AND METHOD FOR CALIBRATING AMPLITUDE OFFSET IN POLAR TRANSMITTER An amplitude modulation circuit in a polar transmitter and a method for calibrating amplitude offset in the polar transmitter are provided. The amplitude modulation circuit includes a digital-to-analog converter (DAC), a low pass filter (LPF), a gm stage, and a calibrat... | 06/17/2010 |
| 20100136931 | METHOD FOR TRANSMITTING AND RECEIVING ADDITIONAL CONTROL SIGNALS A method for transmitting/receiving an additional control signal without any loss of bandwidth and power in an original Tx signal is disclosed. If the additional control signal is transmitted via the Tx signal composed of at least one of data and control signals, at lea... | 06/03/2010 |
| 20100124889 | ADAPTIVE DELAY ALIGNMENT IN POLAR TRANSMITTERS A polar transmitter includes a power amplifier (PA), an amplitude modulation (AM) path including an AM path adjustable delay, an AM path delay measurement circuit, a phase modulation (PM) path including a PM path adjustable delay, and a PM path delay measurement circuit... | 05/20/2010 |
| 20100081397 | TIME ALIGNMENT METHODS AND APPARATUS FOR POLAR MODULATION TRANSMITTERS A polar modulation transmitter includes an amplitude modulation (AM) path with an amplitude modulation to amplitude modulation (AM/AM′) correction circuit and a phase modulation (PM) path with a delay element and an amplitude modulation to phase modulation (AM′/PM) ... | 04/01/2010 |
| 20100068998 | WIRELESS INTERFACE In one embodiment of the present invention, a wireless interface is provided for supplying all signals and power exclusively wirelessly from a transmitting section to a receiving section. The transmitting section includes a transmitter arranged to modulate a carrier wit... | 03/18/2010 |
| 20100056080 | TRANSMISSION CIRCUIT AND COMMUNICATION DEVICE Provided is a transmission circuit that can broaden a controlled bandwidth of a voltage controller while ensuring voltage withstanding ability of the voltage controller. The transmission circuit includes: a phase modulator that outputs a phase modulation signal; a power... | 03/04/2010 |
| 20100003933 | SIGNAL TRANSMISSION APPARATUS AND SIGNAL TRANSMISSION METHOD A signal transmission apparatus of the invention comprises: a correlator 12 for shaping a spectrum of a signal; and a precoder 12 disposed on a previous stage of the correlator and including an adder which subtracts an output signal of a feedback filter fr... | 01/07/2010 |
| 20090258611 | POLAR MODULATION TRANSMISSION APPARATUS AND POLAR MODULATION TRANSMISSION METHOD The polar modulation apparatus of the present invention can control the output power of a transmission signal over a wide range and compensate characteristic degradation reliably upon temperature change. Polar modulation transmission apparatus 100 is provided wit... | 10/15/2009 |
| 20090184761 | AMPLIFIER MODULATION METHOD AND APPARATUS One embodiment relates to a power amplifier that includes a switched mode power amplification stage. The power amplification stage has an output configured to provide an amplified output voltage as a function of a drive signal, where the drive signal fluctuates during a... | 07/23/2009 |
| 20090181626 | TRANSMITTER An apparatus comprising a first circuit configured to receive a signal and output a first output signal, a second circuit configured to receive the same signal and output a second output signal with a phase delay compared to the first signal, and a combiner configured t... | 07/16/2009 |
| 20090175380 | Complex Signal Scaling for Phase and/or Amplitude Modulated Signals A signal scaling device (D), for a transmission path of a wireless communication equipment, comprises a processing means (PM) adapted to receive a phase and/or amplitude modulated signal (I/Q) to transmit, and arranged to multiply said phase and/or amplitude modulated s... | 07/09/2009 |
| 20090117863 | High efficiency rf transmitter system using non-linear amplifiers An RF transmitter with improved efficiency and good linearity decomposes an input AM signal into two signal envelopes with phased modulation at a phase angle θ. The transmitter has three principal embodiments. A first solution uses at least one added RF amplifier for e... | 05/07/2009 |
| 20090111397 | POLAR MODULATION TRANSMITTER WITH ENVELOPE MODULATOR PATH SWITCHING Methods and apparatus for controlling power in a polar modulation transmitter. An exemplary polar modulation transmitter includes a radio frequency power amplifier (RF PA), a phase path having circuitry operable to generate a constant amplitude phase modulated signal, a... | 04/30/2009 |
| 20090111396 | AM TRANSMITTER AND MODULATION METHOD USING SAME An AM (Amplitude-Modulated) transmitter capable of improving modulation distortion is provided. An adder adds a modulation signal to a pre-set power reference signal. An APC (Automatic Power Control) amplifier compares a level of a detecting signal outputted by the LPF ... | 04/30/2009 |
| 20090042520 | Envelope tracking RF amplifier Apparatus is presented for broadcasting an RF signal. This includes an amplifier having a first input and a second input for a vacuum tube amplifier embodiment. A sampler receives a composite RF signal and provides therefrom a sample signal and a driver signal each sign... | 02/12/2009 |
| 20080299919 | SIGNAL ENHANCEMENT IN RF TRANSMITTERS EMPLOYING NON-LINEAR FILTERING A communications transmitter having a main transmit chain for main signal features and one or more auxiliary transmit chains for auxiliary signal enhancements. In one embodiment, a communications signal is produced by digitally processing a representation of a desired s... | 12/04/2008 |
| 20080248766 | 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 sign... | 10/09/2008 |
| 20080233899 | High-frequency circuit device A high-frequency circuit device is provided that achieves cost reduction and reduction in power consumption and does not require an additional high-frequency amplifier even when a transmission frequency band is newly added. The high-frequency circuit device has a config... | 09/25/2008 |
| 20080207145 | TRANSMITTER Briefly, a transmitter that includes first and second fractional N synthesizers that may generate outphased modulated signals. First and second sigma-delta modulators may control the modulation of the first and second fractional N synthesizers.... | 08/28/2008 |
| 20080207144 | Method and System for Improving Efficiency Over Power Control for Linear and Class AB Power Amplifiers Aspects of a system for improving efficiency over power control for linear and class AB power amplifiers may include a current source circuit that enables determination of a bias current level for a PA circuit within an IC die based on an amplitude of an input modulatio... | 08/28/2008 |
| 20080192861 | POLAR MODULATOR WITH SIGNED AMPLITUDE REDUCING PHASE TRANSITIONS A polar modulator including a signal converter configured to provide a phase signal and an amplitude signal based on at least one received signal is disclosed. A digital-to-analog converter is coupled to the signal converter, the digital-to-analog converter configured t... | 08/14/2008 |
| 20080188189 | POLAR MODULATION TRANSMISSION APPARATUS AND TRANSMISSION POWER CONTROL METHOD As explained above, according to embodiments of the present invention, by providing averaging section 111 that detects an average power value of amplitude component signals, and controlling transmission power based on the amount of drift in the average output pow... | 08/07/2008 |
| 20080153435 | TRANSMISSION APPARATUS AND COMMUNICATION APPARATUS The transmission apparatus according to the present invention can reduce transmission output noise leaking into the receiving apparatus even when the transmission apparatus is applied to wireless equipment using the W-CDMA scheme. Transmission apparatus (100) has bypass... | 06/26/2008 |
| 20080139138 | Transmission circuit A transmission circuit capable of transmitting a modulated wave signal using polar modulation in a broad band and with low power consumption is provided. The transmission circuit generates an amplitude signal and a phase signal based on data to be transmitted, and separ... | 06/12/2008 |
| 20080122558 | Surface acoustic wave device, transmitter, and transceiver A surface acoustic wave device comprises a surface acoustic wave element, including: a piezoelectric substrate, a first interdigital transducer unit having a first interdigital transducer and a second interdigital transducer formed on the piezoelectric substrate, and a ... | 05/29/2008 |
| 20080057881 | Bandwidth enhancement for envelope elimination and restoration transmission systems Systems and methods for increasing bandwidth capability of an envelope elimination and restoration (EER) transmitter. A frequency response of a power supply modulator of the transmitter is approximated. An inverse response is applied to the envelope signal prior to digi... | 03/06/2008 |
| 20080026706 | Polar Modulating Circuit, Polar Coordinate Modulating Method, Integrated Circuit and Radio Transmission Device This invention intends to provide a polar modulating circuit, a polar modulating method, an integrated circuit and a radio transmission device capable of compensating for a delay difference between paths of a phase signal and an amplitude signal while suppressing an inc... | 01/31/2008 |
| 20070281631 | Arrangement for transmitting signals via an antenna feed line in a mobile radio subscriber station The invention relates to an arrangement for transmitting signals via an antenna feed line in a mobile subscriber station, particularly in a vehicle, such as, for example, a road motor vehicle, whereby the arrangement has an antenna feed line and a signal amplifier to am... | 12/06/2007 |
