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AssigneeTexas Instruments Incorporated
InventorsSrinivasan Venkatraman, Abhijit Kumar Das
Estimating the term…
A filter circuit uses a trans-conductor circuit coupled to a control circuit having similar characteristics as the trans-conductor circuit. The control circuit is used to set and/or control the quiescent voltage of the trans-conductor circuit. As a result, the trans-conductor circuit may be designed to operate across a large frequency range while consuming minimal power. The control circuit may be operated using direct current (dc) voltage and may be implemented similar to the trans-conductor circuit implemented in the filter circuit.
A basic block used to implement a filter circuit, said basic block comprising:
A device comprising:
A filter circuit comprising:
Dependencies are inferred from the claim text.
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Measuring at the loading circuit of the differential amplifier: controlling the loading circuit of the differential amplifier
Characterised by the way of implementation of the active amplifying circuit in the differential amplifier: using MOSFET transistors as the active…
Indexing scheme relating to amplifiers: the amplifier being a low noise amplifier [LNA]
Amplifiers
Term end not estimated
1. Field of the Invention
The present invention relates to filter circuits, and more specifically to a method and apparatus for implementing filter circuits based on trans-conductor circuits.
2. Related Art
The present invention will be described with reference to the accompanying drawings, wherein:
FIG. (FIG.) 1 is a circuit diagram illustrating the details of an example device in which the present invention may be implemented;
FIG. 2 is a circuit diagram illustrating the details of an embodiment of a filter circuit;
1. Overview and Discussion of the Invention
According to an aspect of the present invention, a biasing signal designed to set an operating point of a trans-conductor circuit and a common mode feedback signal for the trans-conductor circuit are combined and provided on a common path to the trans-conductor circuit. As a result, the number of components used to implement a filter circuit may be reduced, leading to lower noise and reduction of electrical power consumption.
Several aspects of the invention are described below with reference to example devices for illustration. It should be understood that numerous specific details, relationships, and methods are set forth to provide a full understanding of the invention. One skilled in the relevant art, however, will readily recognize that the invention can be practiced without one or more of the specific details, or with other methods, etc. In other instances, well-known structures or operations are not shown in detail to avoid obscuring the invention.