Modulators inventions

20090267701 - Quadrature modulator and calibration method: A quadrature modulator and a method of calibrating same by applying a first test tone signal to an in-phase modulation branch input of the modulator and a ninety degree phase-shifted version of the first test tone signal to a quadrature modulation branch input of the modulator. The carrier leakage level... Agent: Seed Intellectual Property Law Group PLLC

20090261918 - Dc offset cancellation circuit for modulator using 1-bit signal conversion: A DC offset cancellation circuit used for compensating a carrier leak at an output signal of a modulator has a sign extraction unit for extracting sign of an information signal which is applied to the modulator, an envelope detecting unit for performing envelope detection on the output signal of the... Agent: Sughrue Mion, PLLC

20090251230 - Modulation arrangement and method for providing a modulated control signal: A modulation arrangement comprises an input (E) for supplying a data signal (DS), a pre-modulator (VMod) that is coupled to the input (E) and features a clock pulse input (TEV) for supplying a pre-clock pulse (VT), a main modulator (HMod) that is coupled to the pre-modulator (VMod) on the input... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20090251229 - Self-oscillating modulator with improved synchronisation and pwm cycle constraints: The present invention relates to a self-oscillating modulator (2) comprising a PWM cycle constrainer (21). The present invention further relates to a method of stabilising the switch frequency of a self-oscillating modulator operating on a high level input signal, whereby at least one PWM cycle constraint representative signal (26, 32,... Agent: Cantor Colburn, LLP

20090251231 - Polar feedback architecture: Polar feedback architecture. A polar modulator, as may be implemented within a transmitter module, of a communication device includes feedback. This feedback involves monitoring of phase information and magnitude/amplitude information of an output signal generated by the polar modulator. The output signal can be a radio frequency (RF) signal such... Agent: Garlick Harrison & Markison