This paper presents a new electronically tunable universal filter and quadrature oscillator for low frequency biomedical biosensor applications employing low-voltage differential difference transconductance amplifier (DDTA). The DDTA CMOS structure uses 0.5 V of supply voltage consumes 277 nW power. Unlike the previous filters, proposed provides many transfer functions standard five such as low...

A simple technique is presented to realize a digitally programmable current mode four phase quadrature oscillator using MOCCII. The realized oscillator enjoys the attractive features of digital tuning, low component count, grounded passive components, low sensitivity figures, load insensitive outputs and suitability for IC implementation. The realized digitally programmable current mode four ph...

Objective...........................................................................................................................1 Harmonic Oscillators........................................................................................................1 Tuned Circuit' Oscillator...................................................................................................2 Experiment ...

This paper presents a new realization of resistorless mixed-mode (i.e. both voltage-mode and currentmode) quadrature sinusoidal oscillator using a new active building block (ABB) called the differential voltage current-controlled conveyor transconductance amplifier (DVCCCTA). The proposed oscillator circuit uses a single DVCCCTA, two grounded capacitors (GCs) and does not employ any external li...

In this paper, we propose a design of a current controlled Quadrature Sinusoidal Oscillator. The proposed circuit employs three optimized Multi-output translinear second generation current conveyer (MCCII). The oscillation condition and the oscillation frequency are independently controllable. The proposed Quadrature Oscillator frequency can be tuned in the range of [198 261 MHz] by a simple va...

A single resistance-controlled two-phase quadrature oscillator using plus-type second generation current conveyors CCIIs(+) as the active devices is realized by using a simple technique. The basic building blocks for this technique are a firstorder all-pass filter section and an ideal integrator. The quadrature oscillator is then transformed into a four-phase quadrature oscillator by replacing ...

A low power and low-phase noise quadrature voltage controlled oscillator (QVCO) using the differential complementary Colpitts oscillator topology has been developed. A transformer inductor is used to form a differential output oscillator and the back-gate coupling technique is used to generate quadrature outputs. The advantage of proposed QVCO is analyzed in terms of power consumption, phase no...

A frequency divider based on injection-locked tunable ring oscillator is designed on 0.13-μm standard CMOS. The proposed design can achieve divide-by-4 in the frequency range of 58.75-66.3 GHz. The divider dissipates 49.5 to 54.5 mW power from a 1.5-V voltage supply. Key-Words: High-speed frequency dividers, Injection-locked tunable ring oscillator, Division range