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76 Threads found on Power Amplifier In Ads
i have done small signal analysis for 2 stage amplifier using ATF34143 for 4V,40 mA for Vgs=-0.41 but i am new in this so i need help for gate bias and drain bias i did already but i get harmonic distortion and low power added efficiency. i want to know what should be Vgg if Vgs is found -0.41 V. does Rs required or inductor is enough in gate b
Hi I want to design a class AB power amplifier and I use spice model of D2201UK transistor (semelab) for simulation in ads, design guide>amplifier>DC and Bias point>FET_IV_Gm_powerCalc. but when I put my spice model instead of the default transistor, it doesn't work good. I am using this guideline: (...)
I am doing my project regarding Design of cmos power amplifier for wireless applications I do no how to find input and output impedance of the circuit in ads and also to perform impedance matching in agilent ads using inductors and capacitors for impedance matching.I am also in need of TSMC 130 nm cmos ads (...)
can anyone provide me a full example for CLASS-E amplifier wit all results using transistor in AGILENT ads. I am getting a problerm in harmonic simulation for finding gain, PAE and power
Friends, I am working on matching networks for a power amplifier. In ads using LSSP and optimization of the matching network help to match at a single frequency, but I want to match over a frequency band. Consider S-Parameters in small signal, it can match input and output matching network over a frequency band, but LSSP cannot do it. How (...)
In ads can you tell me in class-E power amplifier, please refer to circuit at point 'A' in Figure at o/p port, How can I plot current and voltage waveform w.r.t to Frequency? please find attached figure.112943. 112943
In ads can u tell me how to plot voltage and current waveforms w.r.t frequency at o/p port in class-E power amplifier at point A 112937. please refer to attach figure. 112937
In ads can u tell me how to plot voltage and current waveforms at o/p port in class-E power amplifier at point A 112937. please refer to attach figure. 112937
Hi I am working on class-E power amplifier by using transistor as ATF52189 and i want to know how to get same s-parameter at o/p port mainly(S21) value. and how to check voltages and current at different nodes at point 'A' in image, if we apply voltage source at drain and gate? figure is attached please refer? Hope for a reply.
hello everyone could anyone help me designing a power amplifier on hfss im new on the program so i have a limited information thanks in advance
Dear friends, How can I use optimization tools in ads to optimize drain efficiency of my class-E power amplifier? As you know, to gain a 100% efficiency (theoretically) voltage of switch and derivative of switch voltage at the time when the switch wants to be on should be zero: v_s (2π)=0 (dv_s (2π))/(d(2π))=0 So, if (...)
Hello friends, I have designed a class-E power amplifier for a DPQSK modulation. I want to test my circuit now, but I do not now how I should use a PSK modulation in ads. Could you please help me? 106860 There is a M_PSK component in ads which would modulates my data, but how I should use this component? Should I connect t
Friends I am new in RF design. I want to design a class A power amplifier at 850 MHz by ads. How to calculate Zin and Zout of transistor Q2SC5761_M16 for input and output matching network. Hfe of transistor Q2SC5761_M16 and QN3440 are 300 & 100 respectively. Graph of Vce Vs ic is correct but graphs of Zin and Zout are wrong. 10
Hi All! I want to design an 2 stage 10ghz PA with ads can you help me about FETs, and some step in ads Thanks
The LDMOS transistors BLS6G2731-6G or BLS6G2735L-30 from NXP are specified for Class-AB pulsed RF operation in 2.7GHz - 3.1GHz range. Most probably if you back-off the output power (and losing efficiency) you can use the transistors for a Class-A PA design.
here are some links and files given, u can take help from these here is the book u can also great help from it. the book's name is Reliable RF power amplifier Design Based on a Partitioning Design Approach By Rui Ma also attached
hi, I want to know the steps involved stabilizing the ldmos based amplifiers. I am using MRFE6S9125NR1. Somehow i was able to get 50 to 70 watts from 925 to 960MHz. But there is some stability issue in 880 to 915 band. ads LSSP Simulation shows that that amplifiers becomes unstable at 33dbm input power. The (...)
Hello, I am Designing a power amplifier, The transistor selected is a freescale transistor (MRF6V2300N), luckily I have found its ads design model, i have included it according to a tutorial, but while simulating it is giving following error.... Kindly guide how to correct this error?? any help is appreciated!! Thanks. [SIZE
Sir, I am beginner for design of power amplifier in ads2009. I have noticed in the ads 2009 Design Guide > power amplifier Examples - By Class Of Operation > class B > Load Pull -PAE,Output power Contours, they have taken the GaAsFET FET1 transistor nonlinear (...)
When you do HB simulation in ads for amplifier or oscillator and it shows very high dBm at 0Hz ( in the spectral plot) along with the others, what does it mean?
Hi, I am designing a RF power amplifier. I use Cadence but it seems that there is little material about RF power amplifier in Cadence. Now I intend to switch to PSIM. I am wondering if PSIM supports RF power amplifier simulation. My power amplifier operates (...)
Hi everyone. I want to design a power amplifier and I need a ams CMOS C-35(nmos MN1) for my design,but I can't find it in ads library.what should I do?
ads has a example about Class-D amplifier, but that is direct freq amplifier, runing at 850MHz. You can find that amplifier in ads2011 example, about class-D and THD calculation. But the live audio class-D amplifer has freq convertion, i.e. has a clock, say 1.6MHz, and the input audio signal is a (...)
I have to design power amplifier in ads tool. I required design procedure steps. please help me.
hi, I am designing a n amplifier for GSM BTS. I have selected MRFE6S9125N for my design. Previously i have successfully designed GSM amplifier by using PD20015-E fro ST. I want to use MRFE6S9125N at 30 to 40 watt output with 28v dc. I am facing difficulties in extracting the optimum load impedance for specific output power and (...)
Hello, I have to design Class A microwave power amplifier for Ka band. I need help in it. I need to know the step by step method for this. I have seen the books but i got confused, as there is no step by step methods. Can any one help me?
Hi everyone, here is my problem! I have the ads model of a transistor. In the datasheet of this transistor, the Zs and Zl for five different frequencies are given and stated that these values are optimized for power, gain, PAE and Psat. So I have been trying to find these exact values of source impedances and load impedances, given in the data
Hi everybody, where can I find ads simulation files of this Application note? Thanks in Advance Saeed
Hi all, I am designing a RF power amplifier for my final project. The PA adapted Doherty architecture. I intend to design it for input power of 25 dBm (which is 0.316 W). If the input signal is a sinusoidal signal, how much is the peak voltage? The 25 dBm, can I consider it as a RMS value and using P = Vrms^2 / R formula? I look (...)
Dear all, Hi. I simulate a MMIC RF power amplifier (PA) in ads (advanced design system), s-param simulation is working well but harmonic balance not. Increasing the input signal power of the PA, the output signal power increases unconditionaly, even more then DC power dissipation. 3rd (...)
Hi all, I want to simulate a power amplifier using NXP RF power transistor in Genesys. However, the NXP website only provides me with the ads model (library) for its specific product that I want to use. Can I somehow use this ads model in Genesys? My version is 2009. I tried to open the NXP library from (...)
Hi I personally prefer PA design in ads. But most of the CMOS foundry are only available in Cadence. Is it equally capable to use Cadence for PA design? I am only talking about schematic design, not layout. Did you trust the foundry's spectre model, or you develop your own model?
Hi Friends I designed a power amplifier using ads, and simulated it with Harmonic balance simulator. Since this PA is going to be used in OFDM system, I am looking for a way that simulate it with OFDM input and check the output's shoulder. I really appreciate that if any of you can help me and show me a way to do this in ads.
My classmate and I are designing a RF power amplifier for our senior design project. I realize we are just reinventing the wheel, but both of us would like to work in the RF/Microwave field and hope this project will give us experience with ads and PCB layout to make us more marketable. We have to conduct a market research survey with the (...)
Dear all, Recently, I am working with a power amplifier (PA) tuning. I want to know whether there is an optimal method to tune PA. I want to import the PCB file to ads (Advanced Design System). The example PCB file is shown in Fig. 1. Then in the ads file, I connect a 50 Ohms load to A? point, while the other port (...)
Hi, I am trying to design a broad band amplifier ( 300MHz-500MHz) using PD85004. The required output power is less than 1 watt. PD85004 ads model is available. How can i start the design using ads? What are the appropriate steps? I want to follow the following Phillips Application Notes in designing the (...)
hello all i am designing a T/R module in X band for a radar......for this i need a limiter circuit using MA4L011134 PIN diode.......i want to know where can i find .s1p file for this be used in ads Also LNA design using MGF4941AL....... Also i am designing a 10W Class AB Solid state power amplifier using a discrete transistor who
the tr is not a power one. the simulation should be in small signal region. That's wrong, you are designing a PA then you have to perform large signal simulation even the power level is low. Large signal simulation (HB) is not related to power level, I assume the transistor is working in its saturation region.
Hi, I am making the layout on microstrip for a design of a medium power amplifier at 2.14 GHz. I have a problem about the use of a via hole to provide the ground at my circuitry. The via hole leads to a significant reduction in gain from 14 dB to 10 dB. Is it possible? I am using ads and my substrate MSUB has: H = (...)
Dear friends These days I am designing a 2-stage power-amplifier in 5.8 GHz in ads , but when I test the S parameter , there is something strange about its MAG(max available gain ) , in low frequency , its MAG is -3040 while in 5.8 GHz its MAG is normal . when I test the first and second stage PA separately , the S-parameters and MAG of (...)
Does anyone have low power 27MHz amplifier (working below 9V Vdd) ( for transmit signal up to 100m). I found MIC919. IS this okie for this application THank for reading
hi all a simple PA ads file is attached, I need to adjust the specifications needed for amplifier in simulation as following: AM/PM (single carrier) < 6.5deg/dB output power 17dBW (input is not important)! inter modulation as bellow (dB): Psignal/Psat ****** IM3/Psignal -3 *********** -10 -10 (...)
Hi , 1)First select an appropriate transistor. 2)Design bias network by looking its datasheet. 3)Make loadpull simulation that is under the design guide menu. 4)Then select the load reflection coefficent that gives the power you want. 5)Then realize this load reflection coefficent on the circuit then use harmonic balance analysis to calculat
my circuit is a power amplifier,im beginner in ads if you have an example i would be glad that you share it with me . thanks.
i have designed a power amplifier for 2.4ghz in ads and i simulate it in S-Parametere simulation and plot Z(2,2) vs frequnce i see output impedance of circuit is 30.49Ω but the load impedance that give maximum power (RL-opt) is near 10Ω now i want to match the output to 50Ω but i have 2 question:1-is it true (...)
i am new one in using ads for amplifier...... can any one help me steps to design power amplifier at 1.5ghz in ads.......... plzzzzzzzzzzzzzz help me.......send some examples or procedure.steps..what data u have. thanks
i need a schematic diagram of class E power amplifier for ISM band and for simulation in ads
Hi, I want to optimized my power amplifier in ads. My optimization goal is mainly power parameters(power, Voltage,etc), but I want to also optimize reflection coefficient. So I want to do HB and SP optimization simutaneously under 1 optimization controller. Is it possible? Or do you have better methode? (...)
if anyone has a full example of class-E power amplifier simulation in ads please help me
You change the class of operation by adjusting the bias and input signal amplitude such that the conduction angle is reduced. In Class A, the conduction angle is 360 degrees, meaning that the device is on for the full cycle of the input sinusoid. You can shift the bias point such that it is on only for say half of the input cycle. This should in