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Telecommunications > Transmitter And Receiver At Same Station (e.g., Transceiver) > With A Common Signal Processing Stage > Transmitter Oscillator Used As Local Oscillator > Tunable Or Variable Tunable Or VariableTunable Or Variable patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.01/25/07 - 20070021072 - Voltage controlled oscillator band switching system An apparatus, method, and system for voltage controlled oscillator band switching are described. A band switching apparatus may include a reference generation and comparison module, a clock pulse generation module, and a counter and gating module. The reference generation and comparison module may generate a positive signal based on a ... 08/10/06 - 20060178114 - Tunable radio frequency filter The present invention provides a filter unit cell. The filter unit cell includes a variable capacitor coupled in series between first and second nodes and an inductor coupled in series between the second node and a third node. ... 01/05/06 - 20060003707 - Weighted mixing circuitry for quadrature processing in communication systems Mixing circuitry for quadrature processing in communication systems and related methods are disclosed. The weighted mixing circuitry allows for arbitrary dividers to be utilized in generating the mixing signals for quadrature processing and thereby provides a significant advantage over prior architectures where 90 degree offset I and Q mixing signals ... 01/05/06 - 20060003706 - Ratiometric transmit path architecture for communication systems A ratiometric transmit path architecture for communication systems and related methods are disclosed. This ratiometric transmit path architecture utilizes a single local oscillator signal and dividers to provide mixing signals for intermediate frequency (IF) mixing circuitry and feedback mixing circuitry, thereby eliminating the need for separate IF and radio frequency ... ### FreshPatents.com Support |