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Design of Active-Based Passive Components for Radio Frequency Applications Open Access


Other title
Active-Based Passive Components, Radio Frequency, Active Inductor
Type of item
Degree grantor
University of Alberta
Author or creator
Ghadiri Bayekolaee, Aliakbar
Supervisor and department
Kambiz Moez, Department of Electrical and Computer Engineering, UoA
Examining committee member and department
Calvin Plett, Department of Electronics, Carleton University
Sandipan Pramanik, Department of Electrical and Computer Engineering, UoA
Behrouz Nowrouzian, Department of Electrical and Computer Engineering, UoA
Kenneth Cadien, Department of Chemical Engineering, UoA
Department of Electrical and Computer Engineering

Date accepted
Graduation date
Doctor of Philosophy
Degree level
In this dissertation, we propose new structures of active-based passive components as well as new utilizations of these devices in radio-frequency integrated circuits (RFICs). The active-based passive components, by definition, are the basic passive electronic devices (resistors, capacitors, and inductors) with positive or negative values which are realized using transistors. These components have been used in RFICs to compensate for the non-ideality or undesired parasitics of other circuit elements in order to improve the overall circuit performance. We present new configurations of the active-based passive devices to improve the performance of the conventional topologies. We present modified structures of the active inductor, and negative capacitance (NCAP) that exhibit linear impedance/admittance characteristics in a broad frequency band where an extra NCAP is used to reduce the effect of the shunt parasitic capacitance. Furthermore, we present new active configurations for capacitors which exhibit high quality factor (Q) in millimeter-wave frequency band where their passive counterparts fail to provide high Q. Second, we explore new utilizations of the active-based passive components in the design of RF and Microwave circuits. An area-efficient distributed amplifier (DA) is designed in which area-consuming passive inductors are replaced with their active counterparts. Also, a new high-gain structure of DA is presented in which negative capacitance cells are exploited to ameliorate the loading effects of parasitic capacitors of gain cells in order to improve the gain-bandwidth product of the distributed amplifiers. A 40-GHz filter was fabricated using our proposed single-ended active capacitor with a measured tunable insertion loss is 0dB.
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