Log in

Relevant bibliographies by topics / Voltage-controlled oscillator / Journal articles

To see the other types of publications on this topic, follow the link: Voltage-controlled oscillator.

Journal articles on the topic 'Voltage-controlled oscillator'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 May 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Voltage-controlled oscillator.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

H, Thejusraj, Prithivi Raj, J. Selvakumar, and S. Praveen Kumar. "Design of High frequency Voltage Controlled Oscillators for Phase Locked Loop." International Journal of Engineering & Technology 7, no. 3.12 (July 20, 2018): 871. http://dx.doi.org/10.14419/ijet.v7i3.12.16553.

Full text

Abstract:

This paper presents the analysis of various oscillators that generate high frequency of oscillation for high speed communication, clock generation and clock recovery. The Ring oscillator and the Current Starved Voltage Controlled Oscillator(CSVCO) (for 5-stagewithout resistor and with resistor) have been implemented using the Cadence Virtuoso tool in 90 nm technology. The generated frequency of oscillation and the power consumption values of the voltage controlled oscillators have been calculated after inclusion in the PLL, and were also compared to identify the most suitable voltage controlled oscillator for a given application.

APA, Harvard, Vancouver, ISO, and other styles

2

Saha, S. K., and L. C. Jain. "Linear voltage controlled oscillator." IEEE Transactions on Instrumentation and Measurement 37, no. 1 (March 1988): 148–50. http://dx.doi.org/10.1109/19.2686.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Savchenkov, A. A., V. S. Ilchenko, W. Liang, D. Eliyahu, A. B. Matsko, D. Seidel, and L. Maleki. "Voltage-controlled photonic oscillator." Optics Letters 35, no. 10 (May 5, 2010): 1572. http://dx.doi.org/10.1364/ol.35.001572.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Dada, J. P., J. C. Chedjou, and S. Domngang. "Amplitude and Frequency Control: Stability of Limit Cycles in Phase-Shift and Twin-T Oscillators." Active and Passive Electronic Components 2008 (2008): 1–6. http://dx.doi.org/10.1155/2008/539618.

Full text

Abstract:

We show a technique for external direct current (DC) control of the amplitudes of limit cycles both in the Phase-shift and Twin-T oscillators. We have found that amplitudes of the oscillator output voltage depend on the DC control voltage. By varying the total impedance of each oscillator oscillatory network, frequencies of oscillations are controlled using potentiometers. The main advantage of the proposed circuits is that both the amplitude and frequency of the waveforms generated can be independently controlled. Analytical, numerical, and experimental methods are used to determine the boundaries of the states of the oscillators. Equilibrium points, stable limit cycles, and divergent states are found. Analytical results are compared with the numerical and experimental solutions, and a good agreement is obtained.

APA, Harvard, Vancouver, ISO, and other styles

5

Jaikla, Winai, Suchin Adhan, Peerawut Suwanjan, and Montree Kumngern. "Current/Voltage Controlled Quadrature Sinusoidal Oscillators for Phase Sensitive Detection Using Commercially Available IC." Sensors 20, no. 5 (February 28, 2020): 1319. http://dx.doi.org/10.3390/s20051319.

Full text

Abstract:

This paper presents the quadrature sinusoidal oscillators for a phase sensitive detection (PSD) system. The proposed oscillators are design by using the commercially available ICs (LT1228). The core oscillator consists of three LT1228s: two grounded capacitors and one resistor. By adding four resistors without the requirement of additional active devices, the amplitudes of two quadrature waveforms become adjustable. The quadrature output nodes are of low impedance, which can be connected to the impedance sensor or other circuits in a phase sensitive detection system without the need of buffer devices. The amplitudes of the quadrature waveform are equal during the frequency of oscillation (FO) tuning. The frequency of oscillation is electronically and linearly controlled by bias current or voltage without affecting the condition of oscillation (CO). Furthermore, the condition of oscillation is electronically controlled without affecting the frequency of oscillation. The performances of the proposed oscillators are experimentally tested with ±5 voltage power supplies. The frequency of the proposed sinusoidal oscillator can be tuned from 8.21 kHz to 1117.51 kHz. The relative frequency error is lower than 3.12% and the relative phase error is lower than 2.96%. The total harmonic distortion is lower than −38 dB (1.259%). The voltage gain of the quadrature waveforms can be tuned from 1.97 to 15.92. The measurement results demonstrate that the proposed oscillators work in a wide frequency range and it is a suitable choice for an instrument-off-the-shelf device

APA, Harvard, Vancouver, ISO, and other styles

6

Syed, K. E., and A. A. Abidi. "Gigahertz voltage-controlled ring oscillator." Electronics Letters 22, no. 12 (1986): 677. http://dx.doi.org/10.1049/el:19860463.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Bayard, J., and M. Ayachi. "Transformation of a classical voltage controlled oscillator into a voltage controlled quadrature sinusoidal oscillator." Review of Scientific Instruments 72, no. 8 (August 2001): 3480. http://dx.doi.org/10.1063/1.1386895.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Teramura, Masahiro, Tomoyuki Miyazaki, Yuuji Hone, and Taisuke Takeishi. "A voltage-controlled resistor for a linear voltage-controlled oscillator." Electronics and Communications in Japan (Part II: Electronics) 79, no. 12 (1996): 24–31. http://dx.doi.org/10.1002/ecjb.4420791204.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

NARAHARA, KOICHI, TAKUO YAMAKI, TATSUNORI TAKAHASHI, and TORU NAKAMICHI. "CHARACTERIZATION OF VOLTAGE-CONTROLLED OSCILLATOR USING RTD TRANSMISSION LINE." International Journal of High Speed Electronics and Systems 17, no. 03 (September 2007): 577–84. http://dx.doi.org/10.1142/s0129156407004771.

Full text

Abstract:

Widely-tunable voltage-controlled oscillator using resonant tunneling diodes in a distributed manner is discussed. The circuit configuration and the principle of operation of the VCO are described together with several results of numerical calculations, which include necessary condition of permanent oscillation and how much the oscillation frequency is tuned by the voltage.

APA, Harvard, Vancouver, ISO, and other styles

10

Xu, Chen, Xiang Ning Fan, Zai Jun Hua, and Zhou Yu. "Design of a CMOS Voltage-Controlled Ring Oscillator with Bandgap Voltage Reference." Applied Mechanics and Materials 618 (August 2014): 558–62. http://dx.doi.org/10.4028/www.scientific.net/amm.618.558.

Full text

Abstract:

Voltage controlled oscillator has been used in every field of the electronics industry, and plays an indispensable role. In the fractional divider, in order to reduce the product size, voltage controlled ring oscillator is used to meet the design requirements, at the same time as much as possible to reduce the area. The design of wide tuning voltage-controlled ring oscillator was designed with the reference voltage source. This design not only could reduce the error brought by the external voltage reference, and was also very good realization structure innovation in the film. This design used 0.5 μ m CMOS Hua technology. The post simulation results show: when the coarse voltage and fine voltage are respectively 1V and 2V, voltage waveform oscillator output swing is 2.4V; when the coarse voltage and fine voltage are respectively 1.13V and 2V, voltage waveform oscillator output swing is 2.8V; when the coarse voltage and fine voltage are respectively 1.3V and 2V, voltage waveform oscillator output swing is 3V. After simulations, the frequency range of the voltage-controlled ring oscillator adjustment is 100 ~ 200MHz.

APA, Harvard, Vancouver, ISO, and other styles

11

Sharma, Prakash. "Performance Analysis of Ring Oscillators and Current-Starved VCO in 45-nm CMOS Technology." International Journal for Research in Applied Science and Engineering Technology 10, no. 1 (January 31, 2022): 732–37. http://dx.doi.org/10.22214/ijraset.2022.39908.

Full text

Abstract:

Abstract: This paper presents a relative study among two Ring oscillators architecture (CMOS, NMOS) and current-starved Voltage-controlled oscillator (CS-VCO) on the basis of different parameters like power dissipation ,phase noise etc. All the design has been done in 45- nm CMOS technology node and 2.3 GHz Centre frequency have been taken for the comparison because of their applications in AV Devices and Radio control. An inherent idea of the given performance parameters has been realize by thecomparative study. The comparative data shows that NMOS based Ring oscillator is good option in terms of the phase noise performance. In this study NMOS Ring Oscillator have attain a phase noise -97.94 dBc/Hz at 1 MHz offset frequency from 2.3 GHz center frequency. The related data also shows that CMOS Ring oscillator is the best option in terms of power consumption. In this work CMOS Ring oscillator evacuatea power of 1.73 mW which is quite low. Keywords: Voltage controlled oscillator (VCO), phase noise, power consumption, Complementary metal-oxide-semiconductor (CMOS), Current Starved Voltage-Controlled Oscillator (CS- VCO), Pull up network (PUN), Pull down network (PDN)

APA, Harvard, Vancouver, ISO, and other styles

12

Priyanka Kumari, B. S., and Sobhit Saxena. "Design and Implementation of Efficient MOSFET’s Utilization Based Proposed Voltage Controlled Oscillator." Journal of Physics: Conference Series 2089, no. 1 (November 1, 2021): 012073. http://dx.doi.org/10.1088/1742-6596/2089/1/012073.

Full text

Abstract:

Abstract Ring oscillator is a device which consists of NOT gates connected in the form of ring. This ring oscillator’s output oscillates between the true and false stages controlled by applied voltage. Now days this voltage controlled oscillator (VCO) becomes the heart of modern electronic devices and communication systems. Earlier five-stage complementary metal oxide semiconductor (CMOS) based VCO for the Phase Locked Loop (PLL) was implemented. High frequency oscillations are required for many applications and further it is observed that a very general technique is normally adopted by researchers to achieve high frequency that if number of transistors is increased then the frequency can be increased. But the consequences of increase in number of transistors are the increase in delay and more number of MOSFET occupies more area and more power dissipation. So, in this paper VCO is designed with efficient utilization of MOSFETs. There is a balance between frequency and number of transistors, so that the area and power dissipation can be reduced. From the obtained results it can observed that the number of MOSFET’s, Independent Nodes, boundary nodes total nodes and power are reduced compared to five stage VCO and VCO based Ring oscillator.

APA, Harvard, Vancouver, ISO, and other styles

13

Fujimoto, R., R. Tachibana, H. Yoshida, K. Kojima, and S. Otaka. "4.6 GHz CMOS voltage-controlled oscillator." Electronics Letters 38, no. 13 (2002): 632. http://dx.doi.org/10.1049/el:20020444.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

SHAH, N. A., and C. K. BHAT. "Operational amplifier-based voltage-controlled oscillator." International Journal of Electronics 59, no. 5 (November 1985): 649–52. http://dx.doi.org/10.1080/00207218508920742.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Bayard, J. "Three-phase, voltage controlled sinusoidal oscillator." Review of Scientific Instruments 73, no. 4 (April 2002): 1914–17. http://dx.doi.org/10.1063/1.1458064.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Chan, O. Y., and S. Kazeminejad. "Voltage-controlled oscillator using dielectric resonator." Electronics Letters 24, no. 13 (1988): 776. http://dx.doi.org/10.1049/el:19880526.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Fujimaki, Tadao, Katsumi Ohniwa, and Takashi Honda. "Voltage Controlled 3-Phase Sinusoidal Oscillator." IEEJ Transactions on Electronics, Information and Systems 116, no. 12 (1996): 1420–21. http://dx.doi.org/10.1541/ieejeiss1987.116.12_1420.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Spencer, R. R., and J. B. Angell. "A voltage-controlled duty-cycle oscillator." IEEE Journal of Solid-State Circuits 25, no. 1 (1990): 274–81. http://dx.doi.org/10.1109/4.50314.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Jang, Sheng-Lyang, Yao-Tsu Chen, Chia-Wei Chang, and Miin-Horng Juang. "Triple-band CMOS voltage-controlled oscillator." Microwave and Optical Technology Letters 55, no. 4 (February 27, 2013): 737–40. http://dx.doi.org/10.1002/mop.27431.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Kumngern, Montree, and Kobchai Dejhan. "DDCC-Based Quadrature Oscillator with Grounded Capacitors and Resistors." Active and Passive Electronic Components 2009 (2009): 1–4. http://dx.doi.org/10.1155/2009/987304.

Full text

Abstract:

A new voltage-mode quadrature oscillator using two differential difference current conveyors (DDCCs), two grounded capacitors, and three grounded resistors is presented. The proposed oscillator provides the following advantages: the oscillation condition and oscillation frequency are orthogonally controlled; the oscillation frequency is controlled through a single grounded resistor; the use of only grounded capacitors and resistors makes the proposed circuit ideal for IC implementation; low passive and active sensitivities. Simulation results verifying the theoretical analysis are also included.

APA, Harvard, Vancouver, ISO, and other styles

21

Kumar, Manoj. "A Low Power Voltage Controlled Oscillator Design." ISRN Electronics 2013 (May 15, 2013): 1–6. http://dx.doi.org/10.1155/2013/987179.

Full text

Abstract:

The performance of voltage controlled oscillator (VCO) is of great importance for any telecommunication or data transmission network. Here, voltage controlled oscillators (VCOs) using three-transistor NAND gates have been designed. New delay cell with three-transistor NAND gate has been used for designing the ring based VCO circuits. Three-, five-, and seven-stage VCOs have been proposed. Output frequency has been controlled with supply voltage variation from 1.8 V to 2.4 V. Three stage VCO shows output frequency variation in the range of 3.2909 GHz to 4.2280 GHz whereas power consumption varies in the range of 335.4071 μW to 486.1816 μW. Five-stage VCO depicts frequency in the range of 1.9406 GHz to 2.5769 GHz with power consumption variation from 559.0118 μW to 810.3027 μW. Moreover a seven-stage VCO shows frequency variation from 1.3984 GHz to 1.8077 GHz. Power consumption of seven-stage VCO varies from 782.6165 μW to 1134.400 μW. Phase noise results for these VCOs have also been obtained. Power consumption, output frequency, and phase noise results of proposed circuits have been compared with earlier reported circuits, and the proposed circuits show significant improvements.

APA, Harvard, Vancouver, ISO, and other styles

22

Ullah, Farman, Yu Liu, Zhiqiang Li, Xiaosong Wang, Muhammad Sarfraz, and Haiying Zhang. "A Bandwidth-Enhanced Differential LC-Voltage Controlled Oscillator (LC-VCO) and Superharmonic Coupled Quadrature VCO for K-Band Applications." Electronics 7, no. 8 (July 25, 2018): 127. http://dx.doi.org/10.3390/electronics7080127.

Full text

Abstract:

A novel varactor circuit exhibiting a wider tuning range and a new technique for quadrature coupling of LC-Voltage Controlled Oscillator (LC-VCO) is presented and validated on a 25 GHz oscillator. The proposed varactor circuit employs distribute-biased parallel varactors with a series inductor connected at both ends of the varactor bank to extend the tuning range of the oscillator. Similarly, the quadrature coupling is accomplished by employing the 2nd harmonic, explicitly generated in the stand-alone free-running differential oscillator using frequency doubler. As an example, the Differential VCO (DVCO) is tunable between 20 GHz and 31 GHz and exhibits the best Phase Noise (PN) of −100 dBc/Hz at 1 MHz offset frequency. Similarly, the Quadrature VCO (QVCO) covers 42% tuning bandwidth around 25 GHz oscillation frequency, which is significantly wider than other state-of-the-art VCOs at comparable frequencies. In addition, all the oscillators are designed in class-C to further improve their performances both in term of low power and low phase noise. The presented oscillators are designed using high-performance SiGe HBTs of the GlobalFoundries (GFs) 130 nm SiGe BiCMOS 8HP process. The presented DVCO and QVCO draw currents of approximately 10 mA and 21 mA, respectively from a 1.2 V supply.

APA, Harvard, Vancouver, ISO, and other styles

23

MATHUR, Koushick, Palaniandavar VENKATESWARAN, and Rabindranath NANDI. "Linear Voltage Controlled Oscillator Implementation in Electronically Variable Immittances." Romanian Journal of Information Science and Technology 2023, no. 1 (March 24, 2023): 65–77. http://dx.doi.org/10.59277/romjist.2023.1.05.

Full text

Abstract:

New realization schemes of electronically tunable inductor (L) and Frequency-Dependent Negative Resistance (D) type immittances using a Current Feedback Amplifier (CFA) and Multiplication Mode Current Conveyor (MMCC) composite active building block (ABB) are proposed. Applications of the immittances to the design of selective filters and LC-type linear voltage controlled quadrature oscillator (LVCQO) are presented. Experimental results based on PSPICE simulation and hardware design for a linear range of oscillation frequency (fo ~ 13.6MHz) with satisfactory phase-noise figure on the oscillator wave response had been verified. Effects of the Active Building Block (ABB)-nodal imperfections are analyzed to be insignificant. The new ideas in this article are two types of immittance functions realizable in the same topology; appropriate frequency-domain selective responses are also presented with experimentation results.

APA, Harvard, Vancouver, ISO, and other styles

24

Lee, Jong-In, Dong-Soo Jung, Hak-Kee Jung, Young-Nam Yoon, and Sang-Young Lee. "Design of the Voltage Controlled Oscillator for Low Voltage." Journal of the Korean Institute of Information and Communication Engineering 16, no. 11 (November 30, 2012): 2480–86. http://dx.doi.org/10.6109/jkiice.2012.16.11.2480.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Kozhemyakin, Alexander, and Ivan Kravchenko. "W-band voltage-controlled oscillator design in 130 nm SiGe BiCMOS technology." ITM Web of Conferences 30 (2019): 01006. http://dx.doi.org/10.1051/itmconf/20193001006.

Full text

Abstract:

The paper presents design flow and simulation results of the W-band fundamental voltage-controlled oscillator in 0.13 μm SiGe BiCMOS technology for an automotive radar application. Oscillator provides fundamental oscillation range of 76.8 GHz to 81.2 GHz. According to simulation results phase noise is –89.3 dBc/Hz at 1 MHz offset, output power is –5.6 dBm and power consumption is 39 mW from 3.3 V source.

APA, Harvard, Vancouver, ISO, and other styles

26

Cicekli, Hasan, and Ahmet Gokcen. "MOS-C Based Electronically Tuneable Current/Voltage-Mode Third Order Quadrature Oscillator and Biquadratic Filter Realization." Elektronika ir Elektrotechnika 27, no. 3 (June 28, 2021): 38–49. http://dx.doi.org/10.5755/j02.eie.28921.

Full text

Abstract:

This paper introduces a new electronically tuneable third order quadrature oscillator and biquadratic filter with MOS-C realization using all grounded passive components. Voltage-mode second order low-pass, high-pass, band-pass filters using second generation current conveyor and a current/voltage-mode third order quadrature sinusoidal oscillator using multi-output second generation current conveyor are synthesized from the proposed circuit topology. All synthesized circuits are compatible with integration and the center frequency can be electronically tuned by the gate voltage of the MOS transistors. The proposed circuits do not need any component matching condition. Oscillation condition and frequency of oscillation can be independently controlled. Workability of the proposed circuits is validated by PSPICE software using 0.18 micrometer MOSIS CMOS process parameters at ±0.9 V supply voltage. Tuneability of the oscillator is demonstrated for a tested frequency range both in voltage-mode and current-mode operations.

APA, Harvard, Vancouver, ISO, and other styles

27

THANACHAYANONT, APINUNT, and MONAI KRAIRIKSH. "IMPLEMENTATION OF AN RF CMOS QUADRATURE LC VOLTAGE-CONTROLLED OSCILLATOR BASED ON THE SWITCHED TAIL TRANSISTOR TOPOLOGY." Journal of Circuits, Systems and Computers 19, no. 05 (August 2010): 931–37. http://dx.doi.org/10.1142/s0218126610006530.

Full text

Abstract:

This paper describes the design and implementation of an RF CMOS quadrature LC voltage-controlled oscillator in a 0.35 μm technology. The proposed oscillator employs the switched tail transistor topology and differential switch capacitor tuning to achieve low phase noise operation. A modified series coupling mechanism is used for quadrature signal generation with wide output signal swing. The oscillator core circuit was designed to operate with a 2.5 V power supply voltage with a 4 mA total supply current. Measurement results showed that the prototype oscillator could achieve a nominal oscillation frequency of 2.2 GHz with -110 dBc/Hz phase noise at 1 MHz offset frequency.

APA, Harvard, Vancouver, ISO, and other styles

28

Nandi, Rabindranath, Sandhya Pattanayak, Palaniandavar Venkateswaran, and Sagarika Das. "Electronically Tunable Differential Integrator: Linear Voltage Controlled Quadrature Oscillator." International Scholarly Research Notices 2015 (April 19, 2015): 1–7. http://dx.doi.org/10.1155/2015/690923.

Full text

Abstract:

A new electronically tunable differential integrator (ETDI) and its extension to voltage controlled quadrature oscillator (VCQO) design with linear tuning law are proposed; the active building block is a composite current feedback amplifier with recent multiplication mode current conveyor (MMCC) element. Recently utilization of two different kinds of active devices to form a composite building block is being considered since it yields a superior functional element suitable for improved quality circuit design. The integrator time constant (τ) and the oscillation frequency (ωo) are tunable by the control voltage (V) of the MMCC block. Analysis indicates negligible phase error (θe) for the integrator and low active ωo-sensitivity relative to the device parasitic capacitances. Satisfactory experimental verifications on electronic tunability of some wave shaping applications by the integrator and a double-integrator feedback loop (DIFL) based sinusoid oscillator with linear fo variation range of 60 KHz~1.8 MHz at low THD of 2.1% are verified by both simulation and hardware tests.

APA, Harvard, Vancouver, ISO, and other styles

29

Kang, Cheol-Woo, Hyunwon Moon, and Jong-Ryul Yang. "Switched-Biasing Techniques for CMOS Voltage-Controlled Oscillator." Sensors 21, no. 1 (January 5, 2021): 316. http://dx.doi.org/10.3390/s21010316.

Full text

Abstract:

A voltage-controlled oscillator (VCO) is a key component to generate high-speed clock of mixed-mode circuits and local oscillation signals of the frequency conversion in wired and wireless application systems. In particular, the recent evolution of new high-speed wireless systems in the millimeter-wave frequency band calls for the implementation of the VCO with high oscillation frequency and low close-in phase noise. The effect of the flicker noise on the phase noise of the VCO should be minimized because the flicker noise dramatically increases as the deep-submicron complementary metal-oxide-semiconductor (CMOS) process is scaled down, and the flicker corner frequency also increases, up to several MHz, in the up-to-date CMOS process. The flicker noise induced by the current source is a major factor affecting the phase noise of the VCO. Switched-biasing techniques have been proposed to minimize the effect of the flicker noise at the output of the VCO with biasing AC-coupled signals at the current source of the VCO. Reviewing the advantages and disadvantages reported in the previous studies, it is analyzed which topology to implement the switched-biasing technique is advantageous for improving the performance of the CMOS VCOs.

APA, Harvard, Vancouver, ISO, and other styles

30

Kattimani, Akshata O. "Implementation of types of VCO." International Journal for Research in Applied Science and Engineering Technology 9, no. 8 (August 31, 2021): 2972–678. http://dx.doi.org/10.22214/ijraset.2021.37881.

Full text

Abstract:

Abstract: A Voltage Controlled Divider (VCO) is a basic building block in most of the electronic systems. Phase-locked loop (PLL), tone synthesizers, Frequency Shift Keying (FSK), frequency synthesizers, etc make use of VCO’s to generate an oscillating frequency that can be decided with the help of components. Voltage Controlled Divider can be implemented for analog applications. The project proposes three types of VCO using Electric tool and LT Spice XVII tool. The three VCO’s that are implemented are CMOS Ring Oscillator, Colpitts Oscillator and Relaxation Oscillator. These circuits generate two oscillating frequencies that is decided by the circult components. Keywords: Voltage Controlled Divider (VCO), CMOS Ring Oscillator, Colpitts Oscillator, Relaxation Oscillator, oscillating frequency.

APA, Harvard, Vancouver, ISO, and other styles

31

Zhi, Menghui, Liang Tang, and Donghai Qiao. "Phase noise analysis of voltage controlled oscillator used in cesium atomic clock." International Journal of Modern Physics B 31, no. 07 (March 19, 2017): 1741005. http://dx.doi.org/10.1142/s0217979217410053.

Full text

Abstract:

Coherent population trapping (CPT) cesium frequency standard plays a significant role in precision guidance of missile and global positioning system (GPS). Low noise 4.596 GHz voltage controlled oscillator (VCO) is an indispensable part of microwave signal source in cesium frequency standard. Low-phase noise is also the most important and difficult performance indicator of VCO. Starting from phase noise analysis method proposed by Leeson, the formulas about the relationship between phase noise of output signal of oscillator feedback model and phase fluctuation spectrum of amplifier, phase noise of oscillator are derived in this paper. Finally, the asymptote model of microwave oscillator is proposed based on the formula derivation. The experiment shows that when the reverse bias voltage of variode is 1.8 V, the designed oscillation frequency of VCO is 4.596 GHz, the power is −1 dBm and the DC power consumption is 19.6 mW. The tendency of phase noise simulation curve and actual test curve conform to asymptote model. The phase noise in 1 and 10 kHz is, respectively, −60.86 and −86.58 dBc/Hz. The significance of the paper lies in determining the main factors influencing oscillator phase noise and providing guiding direction for the design of low-phase noise VCO.

APA, Harvard, Vancouver, ISO, and other styles

32

Arai, Tomoyuki, and Ali Hajimiri. "A self-correcting quadrature voltage controlled oscillator." IEICE Electronics Express 11, no. 19 (2014): 20140684. http://dx.doi.org/10.1587/elex.11.20140684.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Singh, V. P., and S. K. Saha. "Voltage controlled oscillator with sine-wave output." IEEE Transactions on Instrumentation and Measurement 37, no. 1 (March 1988): 151–53. http://dx.doi.org/10.1109/19.2687.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

HAN, Jianqiang. "A micromechanical bridge-shaped voltage-controlled oscillator." Science in China Series E 47, no. 1 (2004): 26. http://dx.doi.org/10.1360/03ye0286.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

JAMIL, ASAD, T. S. KALKUR, and N. CRAMER. "VOLTAGE-CONTROLLED OSCILLATOR DESIGN USING FERROELECTRIC VARACTORS." Integrated Ferroelectrics 81, no. 1 (August 17, 2006): 157–63. http://dx.doi.org/10.1080/10584580600660348.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Colinge, J. P. "Voltage-controlled bipolar-MOS (VCBM) ring oscillator." Electronics Letters 23, no. 19 (1987): 1023. http://dx.doi.org/10.1049/el:19870717.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Jamil, Asad, Thottam Kalkur, and Nicholas Cramer. "Tunable Ferroelectric Capacitor-Based Voltage-Controlled Oscillator." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 54, no. 2 (February 2007): 222–26. http://dx.doi.org/10.1109/tuffc.2007.314503.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Kumar, Manoj. "Voltage-Controlled Oscillator Design Using MOS Varactor." Journal of The Institution of Engineers (India): Series B 100, no. 5 (April 2, 2019): 515–24. http://dx.doi.org/10.1007/s40031-019-00399-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

P Patel, Dhara, Shruti Oza, and Rajesh A Thakker. "CMOS Active Inductor Based Voltage Controlled Oscillator." International Journal of Reconfigurable and Embedded Systems (IJRES) 6, no. 2 (May 28, 2018): 97. http://dx.doi.org/10.11591/ijres.v6.i2.pp97-104.

Full text

Abstract:

<p class="MsoNormal" style="margin-top: 6.0pt; text-align: justify;"><span style="font-size: 9pt;" lang="EN-IN">A Tunable Active Inductor (TAI) based Voltage Controlled Oscillator (VCO) for Radio Frequency (RF) applications ranging from 670 MHz - 1.53 GHz is presented. A design of low phase noise and compact VCO is proposed. In order to lower the phase noise of VCO, its RF output power has been improved. The use of low voltage active in-ductor circuit reduces the power dissipation of VCO. The single ended CMOS active inductors with minimum number of transistors are used to consume less die area of VCO circuit. The low power dissipation of the circuit have high efficiency to generate output RF power. A supply independent variable current source tunes the VCO. The post layout design is simulated in Cadence spectreRF using TSMC 180 nm process libraries. The VCO circuit shows the phase noise variation from -124 to - 126 dBc/Hz and an active area of 0.0049 mm<sup>2</sup>. The VCO core circuit, excluding output buffers, consumes 10 mW at 1.8 V supply voltage.</span></p>

APA, Harvard, Vancouver, ISO, and other styles

40

PATI, SHASHIDHAR, C. VENKATESH, NAVAKANTA BHAT, and RUDRA PRATAP. "VOLTAGE CONTROLLED OSCILLATOR USING TUNABLE MEMS RESONATOR." International Journal of Computational Engineering Science 04, no. 03 (September 2003): 675–78. http://dx.doi.org/10.1142/s1465876303002027.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Jang, Sheng-Lyang, Hsiu-An Yeh, Chia-Wei Chang, Miin-Horng Juang, and Han-Sheng Chen. "A quadrature CMOS clapp voltage-controlled oscillator." Microwave and Optical Technology Letters 53, no. 8 (May 17, 2011): 1909–11. http://dx.doi.org/10.1002/mop.26109.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Jang, Sheng-Lyang, Cheng-Chen Liu, Ming-Hsiang Suchen, and Shih-Hsin Huang. "An eight-phase CMOS voltage controlled oscillator." Microwave and Optical Technology Letters 51, no. 5 (March 13, 2009): 1225–28. http://dx.doi.org/10.1002/mop.24270.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Pushkar, K. L., D. R. Bhaskar, and Dinesh Prasad. "Single-Resistance-Controlled Sinusoidal Oscillator Using Single VD-DIBA." Active and Passive Electronic Components 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/971936.

Full text

Abstract:

This paper presents a new single-resistance-controlled sinusoidal oscillator (SRCO). The proposed oscillator employs only one voltage differencing differential input buffered amplifier (VD-DIBA), two resistors, and two grounded capacitors. The proposed configuration offers the following advantageous features: (i) independent control of condition of oscillation and frequency of oscillation, (ii) low active and passive sensitivities, and (iii) a very good frequency stability. The validity of the proposed SRCO has been established by SPICE simulations using 0.35 μm MIETEC technology.

APA, Harvard, Vancouver, ISO, and other styles

44

ELWAKIL, A. S. "A GENERIC MODEL FOR VOLTAGE-CONTROLLED SECOND-ORDER RC SINUSOIDAL OSCILLATORS." Journal of Circuits, Systems and Computers 14, no. 02 (April 2005): 297–305. http://dx.doi.org/10.1142/s0218126605002271.

Full text

Abstract:

A generic model for second-order RC sinusoidal oscillators is derived. The model is based on treating an oscillator as a second-order passive network, with an arbitrary unknown structure, terminated at one port by a linear voltage-controlled negative resistor. A modified model which takes into account the fundamentally nonlinear characteristics of the negative resistor is also derived.

APA, Harvard, Vancouver, ISO, and other styles

45

Khateb, Fabian, Montree Kumngern, Tomasz Kulej, and Mohammad Yavari. "0.5-V Nano-Power Shadow Sinusoidal Oscillator Using Bulk-Driven Multiple-Input Operational Transconductance Amplifier." Sensors 23, no. 4 (February 14, 2023): 2146. http://dx.doi.org/10.3390/s23042146.

Full text

Abstract:

This paper presents a low-frequency shadow sinusoidal oscillator using a bulk-driven multiple-input operational transconductance amplifier (MI-OTA) with extremely low-voltage supply and nano-power consumption. The proposed oscillator is composed using two-input single-output biquad filter and amplifiers. The condition and the frequency of oscillation of the shadow oscillator can be controlled electronically and independently using amplifiers. The circuit is designed in Cadence program using 0.18 µm CMOS technology from TSMC. The voltage supply is 0.5 V and the power consumption of the oscillator is 54 nW. The total harmonic distortion (THD) of the output signals is around 0.3% for 202 Hz. The simulation results are in accordance with theory.

APA, Harvard, Vancouver, ISO, and other styles

46

Mathur, Koushick, Palaniandavar Venkateswaran, and Rabindranath Nandi. "Voltage-variable inductor based linear voltage controlled quadrature oscillator implementation." IEICE Electronics Express 17, no. 5 (2020): 20190738. http://dx.doi.org/10.1587/elex.17.20190738.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Rastegar, Habib, Saeid Zare, and Jee-Youl Ryu. "A low-voltage low-power capacitive-feedback voltage controlled oscillator." Integration 60 (January 2018): 257–62. http://dx.doi.org/10.1016/j.vlsi.2017.10.008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Hassan Aboadla, Ezzidin, and Ali Hassan. "180 nm NMOS voltage-controlled oscillator for phase-locked loop applications." International Journal of Informatics and Communication Technology (IJ-ICT) 12, no. 3 (December 1, 2023): 236. http://dx.doi.org/10.11591/ijict.v12i3.pp236-241.

Full text

Abstract:

<p>The voltage-controlled oscillator (VCO) is the primary device in the phase-locked loop (PLL) to produce the local oscillator frequency. The excessive phase noise of VCOs is the primary cause of PLL performance loss. This paper proposes the design and optimization of low phase noise and low power consumption for a 180 nm N-channel metal-oxide semiconductor NMOS VCO for PLL applications with P-channel metal-oxide semiconductor PMOS varactors and spiral inductors. At 2 V supply voltage, the optimized NMOS VCO has a power consumption of 21 mW, a phase noise of -130 dBc/Hz at 1 MHz offset and a total harmonic distortion (THD) of 3.9%. The proposed design is verified by PSpice simulations. A new criterion is proposed for optimizing NMOS LC oscillators.</p>

APA, Harvard, Vancouver, ISO, and other styles

49

Opila, Daniel, Keith Kintzley, Spencer Shabshab, and Stephen Phillips. "Virtual Oscillator Control of Equivalent Voltage-Sourced and Current-Controlled Power Converters." Energies 12, no. 2 (January 18, 2019): 298. http://dx.doi.org/10.3390/en12020298.

Full text

Abstract:

The dynamics of a general class of weakly nonlinear oscillators can be used to control power converters to create a self-forming AC network of distributed generators. Many control stability results for these “virtual” oscillators consider the interaction of voltage-source converters, but most practical converters use a nested current loop. This paper develops a general method to extend voltage-source stability results to current-controlled converters using a virtual admittance. A fast current control loop allows a singular perturbations analysis to demonstrate the equivalence of the two. This virtual admittance can also manipulate load sharing between converters without changing the core nonlinear dynamics. In addition, Virtual Oscillator Control is experimentally demonstrated with three-phase voltage-sourced and current-controlled inverters. This validates the equivalence of the two formulations, and extends previous single phase testing into three phases. The extension to current-controlled converters enhances safety and increases the breadth of applications for existing control methods.

APA, Harvard, Vancouver, ISO, and other styles

50

Raj, Ajishek. "New Approach of deriving Third-Order Quadrature Sinusoidal Oscillators." Journal of Integrated Circuits and Systems 18, no. 3 (December 28, 2023): 1–5. http://dx.doi.org/10.29292/jics.v18i3.792.

Full text

Abstract:

Numerous approaches/methods have been employed in the past to derive various third-order sinusoidal oscillators (TOSOs). In this communication, a new simple approach for realizing TOQSO is presented, utilizing a second order inverse high-pass active filter with a cascade connection of traditional lossless integrator. The proposed approach can provide quadrature voltage outputs by leveraging the availability of lossless integrator. It is demonstrated that the proposed approach has the potential to generate various TOQSOs, as exemplified by the voltage-mode TOQSO based on current feedback operational amplifiers (CFOAs). The oscillation condition (CO) and frequency (FO) of the derived oscillator can be independently controlled. Experimental results utilizing AD844 CFOA ICs have been included to validate the theoretical propositions.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!