Modulators inventions 09/09

20090237171 - Reducing cross modulation in multichannel modulated optical systems with anti-clipping: A modulated optical system with anti-clipping reduces or corrects clipping that might occur in the laser as a result of negative spikes or peaks in a multichannel RF signal. The system generally detects an envelope of the RF signal to generate an anti-clipping signal that follows at least a portion... Agent: Applied Optoelectronics, Inc.

20090231052 - Pulse width modulation structure enabling regulated duty cycle: A pulse width modulation (PWM) structure enabling regulated duty cycle includes a DC power supply unit, a signal generating unit, a voltage-dividing resistor unit, a reference voltage unit, and a comparing unit. When the DC power supply unit supplies a voltage signal to the voltage-dividing resistor unit, the latter receives... Agent: Nikolai & Mersereau, P.A.

20090231053 - Modulator: A modulator includes a first converter, a second converter and a mixer. The first converter is configured to receive a first bit and provide a first current that is a function of the first bit. The second converter is configured to receive a second bit and provide a second current... Agent: Spryip, LLC Ifx

20090224845 - Modulation signal generation circuit, transmission/reception module, and radar device: A modulation-signal generating circuit includes a temperature monitoring unit that detects a casing temperature of the circuit, a voltage control oscillator including two variable impedance circuits that independently control oscillation frequency based on an input control voltage, a frequency-correction-voltage generating unit that outputs a voltage for compensating for a temperature... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090219105 - Polar modulation apparatus and method with common-mode control: The present invention relates to a polar modulation apparatus and method, in which a polar-modulated signal is generated based on separately processed phase modulation (PM) and amplitude modulation (AM) components of an input signal. An amplified polar modulated output signal is generated in accordance with the phase modulation and amplitude... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing