Recently deep submicron and SiGe (silicongermanium) bipolar CMOS technologies have enhanced the performance of Si-based radio frequency (RF) integrated circuits up to microwave frequencies. The integration of RF MEMS components, such as inductors and capacitors, could further improve the performance of key RF circuit blocks such as voltage controlled oscillators (VCO), low-noise amplifiers, fil...

This paper includes investigations of power losses in monolithic buck dc-dc converter designed with Cadence on CMOS 0.35 μm process. Input voltage of the designed circuit is equal to 3.6 V and output voltage is regulated to 1.2 V. Evaluated and estimated are power dissipations in the MOS transistor, filter inductor and filter capacitor of the buck converter. Investigated and compared are losses...

The paper presents a unified steady-state analysis of PWM SEPIC converter with coupled inductors and separate inductors for both continuous and discontinuous conduction modes. The results of this simplified analysis allow to determine the operating point of converters and further the small-signal low-frequency parameters of linear model, and to design the converter too. The expressions of all s...

Inductors are a necessary building block in many circuits, including LNA and oscillators largely used in Receivers and various other systems. Because planer inductors can occupy a large amount of area in integrated-circuit (IC) designs, the search has been on for smaller, tunable inductors suitable for monolithic fabrication In this paper a method, which is to implement an active inductor by CM...

A new method for predicting the stray capacitance of inductors is presented. The method is based on an analytical approach and the physical structure of inductors. The inductor winding is partitioned into basic cells—many of which are identical. An expression for the equivalent capacitance of the basic cell is derived. Using this expression, the stray capacitance is found for both singleand mul...

There have beem many studies on the analysis and design of low-noise oscillators. Recently, much attention has been paid to the noise reduction technique using coupled oscillators. When oscillators are coupled, the coupling method is very important and affects various factors, for example, the level of noise. In this study, we analyze the phase noise of multiphase CMOS LC oscillators coupled by...

It is well known that a °oating inductor circuit is realized from a grounded inductor circuit by replacing the operational ampli ̄er by a °oating operational transconductance ampli ̄er. This idea is extended to transform current conveyor grounded inductors to °oating inductors by replacing the current conveyor by the recently introduced °oating current conveyor. Several examples are considered an...

In this paper, a series Z-source inverter based on switched inductors cell is proposed for the first time. This inverter is able to increase the voltage gain in comparison to the conventional Z–source inverters in additon to solve the ST (shoot-through) state’s problems. In this inverter, the value of voltage gain is increased by increasing the number of used diodes and inductors in the switche...