Tapered RC Networks for Use in Integrated Filter Circuits,
Abstract
Short-circuit admittance parameters were developed for an exponentially tapered single-path distributed RC network. Tapering has a considerable effect on the driving point admittance, but only a small effect on the transfer admittance. The properties of a bandstop or notch filter comprising a distributed RC line and a lumped capacitor were studied; it was found that the notch in the short-circuit current transfer ratio versus frequency plot is narrowed by grading the network. A bandpass amplifier using a single transistor with a notch filter as the frequency selective element was analyzed. The limits on the performance of such an amplifier are defined by the case with no finite load in which the transistor is assumed to be an ideal current amplifier. The performance of a bandpass amplifier using a practical transistor and a finite shunt load conductance was determined and plotted for several specific cases. The effects on amplifier performance of grading the distributed RC line were reduced as the load admittance was increased. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 11, 1961
- Accession Number
- AD0267899
Entities
People
- D.a. Hodges
Organizations
- University of California, Berkeley