摘要 |
<p>A ring oscillator based voltage controlled oscillator (VCO) is disclosed. The VCO includes a set of delay cells connected to each other in a ring configuration. Each of the delay cells includes a source-coupled input transistor pair, a current- steering transistor pair and a pair of load resistors. The source-coupled input transistor pair receives a pair of differential voltage inputs. The load resistors, which are connected to the source-coupled input transistor pair, provide a pair of differential voltage outputs. The current-steering transistor pair, which is connected to the source-coupled input transistor pair, receives a pair of differential bias voltage inputs. The output frequency of the VCO is directly proportional to the differential bias voltages at the pair of differential bias voltage inputs.</p> |
申请人 |
THE BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM;RANGAN, GIRI, N., K.;SWARTZLANDER, EARL, E., JR. |
发明人 |
RANGAN, GIRI, N., K.;SWARTZLANDER, EARL, E., JR. |