Patent for Sale:Electronic Active Filters for Telecommunications
These active filters techniques are the only ones that can (fully) erase effects of parasitic poles using a single resistor or an additional operational amplifier that has a functionally filtering output.
Primary Application of the Technology
More Particulary: LF (low frequency) to IF (intermediate frequency), particulary in systems for telecommunications and just for example, in a remote reception stage system, where high filtering performances are required to receive and amplifing the signal(s) of interest only, to carry out the right transmitted information to be decoded, without using several filter stages and having system destabilization.
The Problem Solved by the Technology
How the Technology Solves the Problem
-They are the most stable (no manual compensation is needed), and the less noisy* CT single-ended analog active filters (*noise is the interference signals and the lower it is, the higher is the device fidelity);
-They are inexpensive and require less space, this means:
-A lower manufacturing cost than the other compensated filters;
-Saving power consumption and integrated chip area making more versatile, reliable the circuit(s) and longer its life. Ideal for devices that have to work in space or for long time without any human intervention, in critical enviromental conditions also.
The seller may consider selling these patents individually.
Several types of analog CT active filters are available today, someone recently patented by great companies too using low noise balanced operational amplifiers also, but they can’t make use of the “Total Parasitic Voltage Control System” (TPVCS).
Class 327: Miscellaneous Active Electrical Nonlinear Devices, Circuits, And Systems
This is the residual class for electrical devices, circuits or systems having an output not directly proportional to its input and comprising at least one component which can provide gain or can route electrical current and which device, circuit or system does not form a complete system such as is classified specifically elsewhere or a subcombination of utility only in such elsewhere classified system.Subclass 552: Active filter
Subclass 554: Switched capacitor filter