Variable bandwidth filter
| DWPI Title: Semiconductor chip for use in for radar system, comprises a variable bandwidth filter that is configured to filter an analog signal, where a bandwidth of a passband of the variable bandwidth filter is dynamically programmable |
| Abstract: A variable bandwidth filter is described herein, wherein a bandwidth of a passband of the variable bandwidth filter is dynamically tunable. The variable bandwidth tuner is implemented on a CMOS chip, and acts to filter analog signals. The variable bandwidth filter comprises a plurality of finite impulse response (FIR) filters, wherein each FIR filter comprises a plurality of tunable transconductors. The tunable transconductors are tunable in their gain. |
| Use: Semiconductor chip for use in for radar system. Can also be used in automated navigation, e.g. guiding of an airborne object, guiding of a vehicle. Uses include but are not limited to mobile telephones, and satellite systems. |
| Advantage: Reducing the power consumption, while reducing the integrating capacitors to being only the circuits parasitic capacitances, which increases the maximum frequency of operation. |
| Novelty: The semiconductor chip comprises a variable bandwidth filter that is configured to filter an analog signal, where a bandwidth of a passband of the variable bandwidth filter is dynamically programmable. The variable bandwidth filter has a transconductor. The transconductor has a differential pair of transistors, which includes a first transistor and a second transistor. The first transistor has a first drain, where the second transistor has a second drain. Multiple tuning transistors are placed across the first drain of the first transistor and the second drain of the second transistor. A radar receiver is provided. The control circuit generates the control signal based upon a pulse width of radio energy transmitted by a radar transmitter. |
| Filed: 8/18/2015 |
| Application Number: US14828677A |
| Tech ID: SD 12861.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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