Complex Filters as as a Cascade of of Buffered Gingell
                                Structures: Design from from Band-Stop Constraints

Johnston, Samuel Robert

doi:10.15368/theses.2016.102

Cited by 1 publication

(2 citation statements)

References 6 publications

(10 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This leads to the introduction of a new topology, termed "type-II", which requires the fewest number of active components. This topology shares similarities in design with another topology, called "type-I", discussed by Johnston in, "Complex filters as a cascade of buffered Gingell structures: design from stop-band constraints" [7]. Because of the broad topic of complex filters and extensive characterization of the new topologies, the study resulted in two theses.…”

Section: Purpose Of Studymentioning

confidence: 95%

See 1 more Smart Citation

Complex Filters as Cascade of Buffered Gingell Structures: Design from Band-Pass Constraints

Hay¹

View full text Add to dashboard Cite

Complex Filters as Cascade of Buffered Gingell Structures: Design from Band-Pass ConstraintsNicole Marie HayComplex filters are multi-input, multi-output networks designed to discriminate based upon the relative phase difference between input signals. Complex filters find application in modern wireless systems for single sideband transmission and image-reject reception. This thesis presents one active complex filter implementation using two operational amplifiers per stage, termed "type-II" topology. The "type-II" originates from the passive RC-CR polyphase topology presented by Gingell in his 1973 paper, "Single sideband modulation using sequence asymmetric polyphase networks." This new topology gains several advantages over existing complex filter implementations, namely "cascadability" (multiple sections placed in series to create a higher-order response) without altering the characteristics of each individual stage. In addition to describing the derivation of the topology and its performance relative to existing topologies, this thesis investigates the passband characteristics of a general higher-order filter and provides a passband-centric design approach through derivations of closed form expressions for passband gain and bandwidth. The thesis includes a five-stage design example using this approach in addition to an implementation, its characterization, and its comparison to the derived expressions and simulations.

show abstract

Section: Purpose Of Studymentioning

confidence: 95%

“…Four main quantities describe the filter: stopband bandwidth, stopband attenuation, passband gain, and passband bandwidth. Stopband bandwidth, BW stop , defines the range of frequencies in-between the filter's lowest and highest frequency notch; note that this is not a -3dB bandwidth, find the reasoning in [7].…”

Section: Cross-couplingmentioning

confidence: 99%

Complex Filters as Cascade of Buffered Gingell Structures: Design from Band-Pass Constraints

Hay¹

View full text Add to dashboard Cite

show abstract

Complex Filters as as a Cascade of of Buffered Gingell Structures: Design from from Band-Stop Constraints

Cited by 1 publication

References 6 publications

Complex Filters as Cascade of Buffered Gingell Structures: Design from Band-Pass Constraints

Complex Filters as Cascade of Buffered Gingell Structures: Design from Band-Pass Constraints

Contact Info

Product

Resources

About