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Christopher Ralph
Christopher Ralph Cantolino, Bradenton, FL US
| Patent application number | Description | Published |
|---|---|---|
| 20080216503 | Cross-References to Related Applications - A combination filter assembly housing ( | 09-11-2008 |
Christopher Ralph Pescod, Chelmsford GB
| Patent application number | Description | Published |
|---|---|---|
| 20100244903 | TUNEABLE FILTER - A tuneable filter is provided in which a received signal in a first frequency range is translated to a signal of a higher frequency range by a switchable frequency oscillator signal, filtered in a narrow band filter and then down-converted, possibly to the first frequency range. The switchable frequency oscillator signals are generated by a synthesizer which operates by mixing oscillator signals of different frequencies, selected by fast-switching microwave switches, in order to generate the required range of oscillator signal frequencies. | 09-30-2010 |
Christopher Ralph Pescod, Essex GB
| Patent application number | Description | Published |
|---|---|---|
| 20090047023 | Data communications system - A base station is provided for communicating data to a mobile terminal unit by means of at least one antenna unit, wherein the at least one antenna unit is linked to the base station by means of at least one optical fibre and the at least one antenna unit is operable to communicate wirelessly with the mobile terminal unit. The base station comprises an optical transmitter for transmitting modulated data signals to the at least one antenna unit for wireless transmission, an optical receiver for receiving modulated data signals forwarded by the at least one antenna unit and a demodulator for demodulating received modulated data signals. The optical transmitter comprises a first optical modulator arranged to modulate an optical carrier with a radio frequency oscillator signal to generate an optical oscillator signal, a second optical modulator, coupled optically to the first optical modulator, operable to modulate the optical oscillator signal with an input data signal of a predetermined frequency to generate a downlink optical data signal and an optical output for directing the downlink optical data signal to the at least one antenna unit by means of the at least one optical fibre. | 02-19-2009 |
| 20100245968 | BIAS CONTROLLER - The present invention relates to a bias controller for a dual output electro-optic modulator and a method for controlling the bias of a dual output electro-optic modulator. The invention further comprises an optical commutator switch with a plurality of dual-output electro-optic modulators interconnected in a tiered arrangement, and control means for deriving measurements of optical power from each of the modulators. The optical commutator is further used for determining respective bias control signals to achieve and maintain operation of the modulators substantially at their quadrature bias points, and further for generating said respective bias control signals for applying them to the respective modulators. | 09-30-2010 |