Patents
Patents for H03C 1 - Amplitude modulation (2,214)
04/2009
04/16/2009WO2006127606A3 Wireless diagnostic systems
04/16/2009WO2006060156A3 System and method for thermal management in a device
04/16/2009US20090098839 Transmitter and communication apparatus
04/16/2009US20090097581 Method and apparatus for adaptively controlling signals
04/16/2009US20090096546 Modulator for radio-frequency signals
04/09/2009WO2005013410A3 Enhanced holographic communications apparatus and method
04/09/2009US20090091394 Device to generate a modulated electrical radio-frequency signal for a magnetic resonance application
04/09/2009DE102004054761B4 PIN-Dioden-Pulsmodulator PIN diode pulse modulator
04/07/2009US7515884 Method and system for self-calibrating transmit power
03/2009
03/31/2009US7512386 Method and apparatus providing integrated load matching using adaptive power amplifier compensation
03/31/2009US7512384 Control unit and a control method
03/24/2009US7509100 Antenna interface unit
03/18/2009EP1751853A4 A tuneable circuit for canceling third order modulation
03/11/2009EP1410494B1 System and method for current-mode amplitude modulation
03/04/2009CN101379717A Digital-to-radio frequency conversion device, chip set, transmitter, user terminal and data processing method
03/04/2009CN100466460C Modulator and the correction method thereof
02/2009
02/24/2009US7496335 Mobile terminal apparatus and channel compensation method of the same
02/12/2009US20090039974 Polar modulation apparatus
02/11/2009EP1338085B1 A direct digital amplitude modulator
02/04/2009CN100459414C RF mixing device
01/2009
01/27/2009US7482925 Apparatus and method to electromagnetically shield portable consumer devices
01/22/2009WO2009012505A1 Electric fence energiser
01/22/2009US20090023405 RF Front-End Circuitry with Reduced DC Offset
01/22/2009US20090021321 Hybrid linear and polar modulation apparatus
01/15/2009US20090017774 System and Method for Calibrating a Transceiver
01/14/2009EP1757054A4 Single and multiple sinewave modulation and demodulation techniques employing carrier-zero and carrier-peak data-word start and stop
01/13/2009US7477107 Protection circuit and method for RF power amplifiers in WLAN transceivers
01/07/2009EP2012251A1 Method for optimising the transmitting frequency spectrum of an RFID read-write station
01/07/2009EP1935089B1 Systems, methods and devices for dual closed loop modulation controller for nonlinear rf amplifier
01/07/2009CN100449936C Corrective phase quadrature modulator system and method
01/06/2009US7474893 System including a communication apparatus having a digital audio interface for audio testing with radio isolation
01/06/2009US7474876 Device for the production of standard-compliant signals
01/06/2009US7474715 Variable load circuit for reducing quadrature phase error
01/06/2009US7474707 Bandwidth reduction of an FM broadcast signal using a baseband precompensation technique
01/02/2009DE102007028695A1 Verfahren und Vorrichtung zur Erzeugung eines amplituden-modulierten Signals Method and apparatus for generating an amplitude-modulated signal
01/01/2009US20090003487 Reducing amplitude modulated noise for a wireless transceiver
01/01/2009US20090002089 Digital FM Transmitter with Variable Frequency Complex Digital IF
12/2008
12/31/2008EP1060563A4 Method and apparatus for compensating for delays in modulator loops
12/30/2008US7471739 Advanced adaptive pre-distortion in a radio frequency transmitter
12/25/2008US20080317169 Polar modulator arrangement and polar modulation method
12/24/2008WO2008155121A2 Method and device for producing an amplitude-modulated signal
12/17/2008CN101325398A Modulation circuit
12/11/2008WO2008113749A3 Method for the production of a digitally modulated high-frequency signal
12/11/2008US20080305754 Systems and methods for over-the-air testing of wireless systems
12/04/2008US20080299916 Low noise rf driver
12/02/2008US7460624 Method and system of reducing collisions in an asynchronous communication system
11/2008
11/25/2008US7457597 Signal detection using probabilistic techniques
11/25/2008US7457593 Attenuator system
11/13/2008WO2008135402A1 Apparatus and method for generating signals encoded using amplitude shift keying
11/11/2008US7450913 Circuit arrangement for a wideband mixer with predistortion and high linearity
11/06/2008US20080272441 Method and circuit for down-converting a signal
11/06/2008DE102007020823A1 Vorrichtung und Verfahren zum Erzeugen von mit Amplitudenumtastung codierten Signalen Apparatus and method for generating coded signals with amplitude shift keying
10/2008
10/30/2008WO2004036810A3 Method and apparatus for generating rf waveforms having aggregate energy with desired spectral characteristics
10/29/2008CN101297473A Method and device for controlling peak power and pulse width of a broadband gaussian pulse high-power RF transmitter
10/23/2008WO2007117328A3 Pilot signal in an fdma communication system
10/21/2008US7440735 Virtual wireless transmitter
10/21/2008US7440734 Active quadrature radio frequency power detector
10/14/2008US7437130 Smart tuning AM transmitter
10/09/2008US20080246550 Selective envelope modulation enabling reduced current consumption
10/08/2008CN101282106A Electronic circuit, method for modulating, and, apparatus and method for information processing
10/01/2008CN201127033Y AM/ASK modulation module with variable modulation degree and variable output power
09/2008
09/30/2008US7430251 VSB transmission system for processing supplemental transmission data
09/25/2008WO2008113749A2 Method for the production of a digitally modulated high-frequency signal
09/25/2008US20080233903 Selection of filter coefficients for tranceiver non-linearity signal cancellation
09/25/2008US20080233899 High-frequency circuit device
09/25/2008US20080233898 System and method for a time alignment analog notch
09/25/2008US20080232432 non-coherent transmission method for uplink control signals using a constant amplitude zero-autocorrelation sequence
09/23/2008US7428258 Method and apparatus for generating RF waveforms having aggregate energy with desired spectral characteristics
09/18/2008WO2008112074A2 Osteosynthesis plate, method for customizing same, and method for installing same
09/09/2008US7423995 Criteria for tearing down network links
09/04/2008US20080214125 Method and Apparatus For Dynamically Adjusting a Transmitter's Impedance and Implementing a Hybrid Power Amplifier Therein Which Selectively Connects Linear and Switch-Mode Power Amplifiers in Series
09/03/2008CN101258730A Training signal for choosing aerial and wave beam in MIMO wireless LAN
09/03/2008CN100417014C Modulator clock signal source and re-modulator system
09/02/2008US7421254 High linearity, high efficiency power amplifier with DSP assisted linearity optimization
09/02/2008CA2468079C Corrective phase quadrature modulator system and method
08/2008
08/28/2008US20080207145 Transmitter
08/26/2008US7418058 Distortion compensating apparatus and method
08/21/2008US20080198947 Inductive Power and Data Transmission System Based on Class D and Amplitude Shift Keying
08/21/2008DE10307292B4 System und Verfahren für die Reifendrucküberwachung das die Erkennung des Orts des Reifens einschließt Including the identification of the location of the tire system and method for tire pressure monitoring
08/14/2008WO2007130874B1 Spread spectrum ask/ook transmitter
07/2008
07/31/2008US20080182544 Methods and Systems for Down-Converting a Signal Using a Complementary Transistor Structure
07/24/2008WO2005107060A3 Method and system for compensating for phase variations caused by transmitter activation
07/23/2008CN101228754A Method and apparatus for generating M-ary CPM waveforms from a superposition of PAM waveforms
07/23/2008CN100405737C Electronic circuit, modulating method, information processing devcie and information processing method
07/16/2008CN101223450A Low power transmission provisioning for wireless network devices
07/15/2008US7400864 Method and apparatus for compensating for phase variations caused by activation of an amplifier
07/03/2008WO2007130874A3 Spread spectrum ask/ook transmitter
07/03/2008US20080157895 Multi-mode amplitude modulator control method
07/01/2008US7395039 Transmitter
06/2008
06/25/2008EP1935089A2 Systems, methods and devices for dual closed loop modulation controller for nonlinear rf amplifier
06/24/2008US7392021 Apparatus, system, and method for measuring power delivered to a load
06/17/2008US7389100 Method and circuit for down-converting a signal
06/12/2008US20080139138 Transmission circuit
06/11/2008EP1929752A2 Training signals for selecting antennas and beams in mimo wireless lans
06/11/2008EP1929625A2 Method and device for controlling peak power and pulse width of a broadband gaussian pulse high-power rf transmitter
06/11/2008EP1671441A4 Method for estimating signal magnitude, noise power, and signal-to-noise ratio of received signals
06/11/2008CN101199111A A digital amplitude modulation transmitter with pulse width modulating RF drive
06/05/2008US20080132184 Method and Arrangement For Mutual Information Based Power Control
06/03/2008US7383025 Method for processing RF signals for receiving and transmission
06/03/2008US7382887 Method and device for reducing high frequency error components of a multi-channel modulator
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