Modulators inventions 10/07

20070247252 - Ascertaining zero crossing of a carrier waveform for transmitting and receiving signals with substantially no sidebands: Modulation of signals includes substantially no side bands in a frequency domain. In a device for modulating, a carrier waveform has a sole frequency with positive and negative cyclic portions. Data of an input signal is impressed on the carrier waveform to achieve an output signal. The output signal includes... Agent: King & Schickli, PLLC

20070247253 - Apparatus, system, and method for digital modulation of power amplifier in polar transmitter: An amplifier receives an amplitude signal of a polar modulated signal at a base or gate terminal of a transistor and receives a phase modulated carrier signal of the polar modulated signal at the base or gate terminal of the transistor. The amplifier combines the amplitude signal and the phase... Agent: Tyco Technology Resources

20070247254 - Modulation of an rf transmit signal: Techniques for reducing interference among transceivers are disclosed. A transistor generates a radio frequency transmit signal in response to a generated pulse. The pulse is generated when transitions are detected in a clock signal. The clock signal is produced by an oscillator block which includes a ceramic resonator configured as... Agent: Townsend And Townsend And Crew, LLP

20070241835 - Active 90-degree phase shifter with lc-type emitter degeneration and quadrature modulator ic using the same: An active 90-degree phase shifter with LC-type emitter (source) degeneration is provided, which is practiced in an integrated circuit. The phase shifter comprises a first differential amplifier, having one first signal output end and comprising an inductor, a first transistor and a second transistor, wherein the inductor is connected to... Agent: Venable LLP Raymond J. Ho

20070229180 - Distortion compensation circuit: Based on a steady characteristic compensating circuit 11 which stores an output signal amplitude and output phase characteristics with respect to a control voltage in a steady state, amplitude adjustment is executed on amplitude information r11(t) on which amplitude correction is performed, by a first amplitude information adjusting portion 13,... Agent: Pearne & Gordon LLP