Kittipong TripetchRajamangala University of Technology Suvarnabhumi · Department of Electrical Engineering
Kittipong Tripetch
Doctor of Philosophy
Analysis of Common Gate Cross Coupled Power Amplifier Scattering parameter (S21)
About
39
Publications
19,983
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16
Citations
Introduction
I want to synthesize (try to draw the novel circuit diagram which can be derived by large signal current equation or small signal high frequency equivalent circuit by substituting it into the circuit diagram, hopefully, it look like the desired equation. For example, frequency modulation equation) the circuit diagram. The high frequency oscillator circuit can not easily synthesize from undamped equation. The only way to derived artwork to make the novel circuit diagram oscillate in theory is to play with symbolic partial fraction expansion and inverse Laplace's transform which can be derived from the artwork such as many types of cross coupled oscillator and many stages of ring oscillator.
Additional affiliations
April 2014 - January 2019
Keio University, Yokohama,Japan
Position
- PhD Graduate
Description
- 1. High order Gm-C Filter in 0.18 micron CMOS Technology 2. Analysis and Design of a Simple Cross-Couple Oscillator with the exact factorization of pole frequency of input impedance and a root locus plot as a function of the current consumption.
August 2007 - present
Position
- Lecturer
Description
- teaching 3 subjects per year ( 2 times per year) , writing conference paper, etc.
August 2004 - present
RMUTSB
Position
- Lecturer
Description
- Taught engineering electronics, Control Systems and Electronic Communication circuit
Education
June 1996 - January 2002
Field of study
- 4 stage CMOS Buffer Operation Amplifier with Class AB output stage with 0.35 micron cmos technology
June 1991 - March 1996
Publications
Publications (39)
It is about principle of how to derive for the solution of the fully differential folded cascode op-amp which have four parameters (A11,A12,A21 and A22). They are
used to derived differential mode gain and common mode gain. They give results of a polynomial form of these formulas according to principle of Prof. Paul R Gray and Prof. Robert G Meyer....
Tuning Range of Oscillator is one of the important specification which is used in phase locked loop. The more wider tuning range, the better the phase lock loop. This paper proposed regulated cascode cross coupled based CMOS oscillator. The analysis and simulation results of tuning range of this type of oscillator are compared with conventional Col...
The polynomial form of the input impedance of a CMOS cross-coupled amplifier with NMOS only active inductor are proposed. The formula of polynomial form and novel coefficients are programmed in Scilab and MATLAB so that the pole position of the fourth order polynomial can be found. From experience of a simple cross coupled oscillator design, the pr...
The input impedance of a regulated cascode cross couple amplifier is derived. The frequency response of the input impedance polynomial form can be plotted with MATLAB. From the polynomial form of the input impedance of the proposed circuit, it can be transformed by substitute complex frequency s with jω into the polynomial form equation. After tha...
The input impedance of a regulated cascode
cross couple amplifier is derived. The frequency response of
the input impedance polynomial form can be plotted with
MATLAB. From the polynomial form of the input impedance
of the proposed circuit, it can be transformed by substitute
complex frequency s with j into the polynomial form
equation. After that...
An analysis of a BJT phase shift amplifier is proposed in a detail polynomial form. The numerator and denominator polynomial form are derived which can be seen as a symbolic coefficient which are multiplied with complex frequencies of the order of the polynomial. A detail analysis is very laborious but it is presented some of the coefficients which...
It is well known that a Frequency Modulator was invented by Edwin Armstrong since December 1933. Before the F.. M. Modulator was shown in public, the theory of frequency modulation was written by John R. Carson since February 1922 [1]. The theory of frequency modulation was also written by the differential equation by Van der Pol since July 1930 [2...
how to analyze fm modulator from the circuit diagram which I ever presented at ISPEC2018, University of Tokyo at Komaba campus
It is well known that a Frequency Modulator was invented by Edwin Armstrong since December 1933. Before the F.. M. Modulator was shown in public, the theory of frequency modulation was written by John R. Carson since February 1922 [1]. The theory of frequency modulation was also written by the differential equation by Van der Pol since July 1930 [2...
It is well known that input impedance of cross-coupled oscillator circuit has a fourth order denominator polynomial in frequency domain. Thus, it is important to design pole frequency by symbolic formula so that it is oscillate as a sinusoidal signal. It should be noted that in order for cross-coupled oscillator to oscillate, all of four pole frequ...
It is well known that input impedance of cross couple oscillator circuit has a fourth order denominator polynomial form in frequency domain. Thus, it is important to design pole frequency by symbolic formula so that it is oscillate as a sinusoidal signal. It should be noted that in order for cross couple to oscillate, all pole frequency should be p...
This paper proposes symbolic formulas for fourth order polynomial for the first time. These formulas can be compared to the root command of MATLAB that it is correct at least with two positions. The two roots can form the second order polynomial for symbolic long division to derive an additional approximately correct additional second order polynom...
Active inductor is a circuit technique which is based on gyrator loop. Gyrator loop is composed of at least two transconductance amplifiers. Usually, frequency response of active inductor have phase shifted 90 degree at resonance frequency. This paper propose circuit technique which are based on complementary common source amplifier with drain dege...
This paper proposes for the first time symbolic formula of the power spectrum of CMOS Cross Couple Oscillator and its modified circuit. Many principles existed to derived power spectrum in microwave textbook such as impedance, admittance parameters, ABCD, H parameters, etc. It can be compared by graph of power spectrum which methodology is the best...
This paper proposed single stage CMOS complementary regulated cascode distributed amplifier (CRCDA) based on inductive coupling technique. Usually, distributed amplifier is based on inductive coupling between gate and gate terminal of MOSFET and between drain and drain terminal of MOSFET. But this paper proposes some new idea, by combining inductiv...
This report show how to derive the symbolic ratio of voltage as a function of intermediate coeficient which are define by origial symbolic coefficient matrix ( derive from direct circuit analysis after grouping the coefficient which has the same node voltage )
Symbolic analysis is the methodology to verify the software simulation results of electronic circuit from famous software such as Cadence design systems which is own by Mentor Graphic corporation. This thesis or technical report discuss how to derive difficult problem in analysis of electronic circuit such as transformer equivalent circuit as an im...
Six nodes problem have many application on transistor circuit analysis. Such as complimentary regulated cascode amplifier. The methodology use to compare complex coefficients of the matrix by direct circuit analysis term by terms with the solution of the transfer function of full rank coefficients of the matrix. Then maniplate and group all terms t...
6 nodes problem have many application such as 6 degree of freedom in robotic mechanism design , 2 stage cascode first stage , common source second stage amplifier etc.
It is well known that the core circuit of phase lock loop which is one of the most important block of telecommunication circuit. Usually, PLL used simple cross coupled oscillator which might be the best circuit for PLL in term of phase noise specification point of view. but many people in industry might choose ring oscillator which used inverter ci...
It is well known in literature that regulated cascade amplifier is very useful circuit technique for analog circuit designer. But no one want to apply it as a bandpass amplifier and oscillator because it is more difficult to analyze and design without SPICE based software. But in this report there are typical analysis algorithm which can be used as...
types of CMOS active inductors. It derives 2 input impedance formulas. The first formula is the input impedance of the grounded active inductor. The second formula is the input impedance of the floating active inductor. After that, these formulas can be used to simulate magnitude and phase response of input impedance as a function of current consum...
Tuning Range of Oscillator is one of the
important specification which is used in phase locked loop. The
more wider tuning range, the better the phase lock loop. This
paper proposed regulated cascode cross coupled based CMOS
oscillator. The analysis and simulation results of tuning range
of this type of oscillator are compared with conventional
Col...
This paper presents for the first time analysis and design of the propose fully differential rail to rail input and output 2 stage amplifier by simplified Ebers Moll equation compared with device physics equation which can be optimize at the level of doping concentration which should have an influence on mobility models of the transistor. The autho...
This paper presents the realistic modulation analysis at the transistor level from schematic such as Modified Gilbert Multiplier and fully differential microwave power amplifier based on common-emitter connection. Output signal from the output node of the Gilbert Multiplier can be plotted in time domain from more realistic equation compared with id...
In this paper, the symbolic formulas for AC power signal gain, input and output impedance of fully differential single stage common-source microwave power amplifier based on LDMOS large signal model are derived for the first time. The model can be verified by comparing with HSPICE simulation results as well as comparing with experimental results.
Questions
Questions (12)
You can use linear algebra by labeling each input and output of the block diagram inside the whole block diagram of the phase locked loop system after that write linear equation to relate the input and output relationship of each block of the whole system so that all of the equation of the system can be shown in the paper. After that substitute each function in the way to eliminate all of the variable which are not the function called input and output of the system. Usually , block diagram is the representation of the frequency domain transfer function. After the whole transfer function of the system is derived in the closed form, the function inside the block diagram in frequency domain can be substitute. Then, the partial fraction expansion methodology can be used by factorization and inverse Laplace's transform. The unknown of the partial fraction expansion can be determined by factorization and multiply with summation of n unknowns and n poles of the system. The last step of the symbolic unknown determination are to multiply the unknowns with all the pole so that the coefficients which are multiplied with the order of the polynomial. Then, compare the coefficients with the symbolic value of the left hand side with the coefficients which have the same order of s^n in the right hand side so that all the equations can be written. After that all of the unknown can be solved. The time domain should have no carrier wave term so that it can be called demodulator. Otherwise, it can not be used as a demodulator.
Isn't it possible that some artwork in cmos distribute amplifier have no power gain if I use S21 in Cadence Spectre? But after that I found that maximum stable power gain (Gmsg) have some power gain which make me very chaos.
such as ring oscillator and other necessary circuit which can interface with keyboard to make adaptive signal generator. Please provide brand and model of off the shelf delay lock loop or PLL which is popular to make signal generator
Can someone gives me element formula of BSIM4 equivalent circuit in compact form ? Because I can not find these formulas from UC Berkeley website.
Please give the size of the smallest hole which can be made by screw with hand ( please do not hint me to use LPKF which is very expensive instrument)
Bilinear transformation is to transform s=(2/T)(z-1)/(z+1)
how many types of liquid which used to remove copper which is unused area from pcb? (what is the best liquid and how much does it cost?)
What are the material you use to attached to copper for use area which can be seen as transmission line , open stub, short stub, etc.
1. Equivalent input mean squared input noise voltage (Noise power spectra density ?)
2 Common mode rejection ratio
3 Power supply rejection ratio
4. offset voltage
5. noise efficiency factor (NEF)
