On-chip automatic tuning circuit with proposed integration level approximation technique, designed in a 0.65m 3.3V CMOS process for tuning of the variation passive component. To verify tunning efficiency of proposed circuit, three types of 2nd-order biquad RC active filters were used. The cut-off frequency (fc) error of filter with proposed tuning circuit can be reduced by new algorithm that co...

A simple on-chip automatic frequency tuning circuit is proposed. The tuning circuit is modified from voltage-controlled filter (VCF) frequency tuning circuit. We utilize an operational transconductance amplifier and a capacitor to from a single-time constant (STC) circuit which can produce a controllable delay time clock to tune the frequency of the filter. It can efficiently reduce the deviati...

In this paper we present a new transistor sizing methodology called Free Power Recovery (FPR) for low power circuit design. The objective of this methodology is to minimize the total power of a circuit by accounting for node switching activities and leakage duty cycles (LDC). The methodology has been incorporated into the EinsTuner circuit tuning tool. EinsTuner automates the tuning process usi...

This paper presents a study of Active inductor based VCOs that helps in increasing the tuning range of the VCO , reduces the chip size and phase noise of the circuit. Study has been done on LC VCOs by replacing the passive inductors with the active one consisting of MOSFET. Design of circuit has been done on Orcade Capture using .18um technology.power consumption of circuit is 1.33mW with tunin...

The continuous scaling down of technology, there is the exponential increase in leakage current. The MTCMOS is an attractive design to reduce the leakage current in idle state. Sleep-to-Active mode transition is an important concern in MTCMOS circuit because it produces ground bounce noise. In this paper, Threshold Voltage tuning method with MTCMOS circuit is used to reduce the ground bounce no...

A novel method is presented for electrically tuning the frequency of a compact radio-frequency identification (RFID) tag antenna. A tuning circuit, comprising a radio frequency (RF) switch and discrete passive components, was completely integrated into the antenna element, which is thus free of DC wires. The low-profile printed antennas were fabricated together with the layouts of the DC contro...

Anyone who have designed a capacitively tuned VFO/VCO with the wide tuning range (>1.5-2x) has noticed that the oscillation threshold changes substantially with the tuning frequency. The usual solution to the problem is a combination of: 1. the AGC circuit, most frequently via the amplifier bias that changes the amplifier conduction angle; 2. shunting the LC circuit with a damping resistor or b...

It is well known that Chua’s circuit can exhibit numerous hifiircution phenomena and attractors by tuning one or more circuit parameters. These properties can be used to synthesize sounds with complex freyuenqy spectra ,fbr musical purposes. Investigations of Chua’s circuit for sound synthesis and music composition have produced spec$cutions for tuning multiple circuit parameters to obtain spec...