BigBoss
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29th March 2020, 01:40BigBoss replied to a thread bipolar active linear region in Analog Integrated Circuit (IC) Design, Layout and FabricationYour definition Vbc<0 is not correct. Exact statement should be B-C junction is reverse biased for Linear region,Forward biased for Saturation...2 replies | 171 view(s)
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28th March 2020, 01:24BigBoss replied to a thread Interpreting NF Circle ang Gain circle for matching network in Analog Integrated Circuit (IC) Design, Layout and FabricationIs it a joke ?? Everything is short circuited.. Read on simulation techniques much.There are millions app notes and papers about it.7 replies | 446 view(s)
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27th March 2020, 01:26BigBoss replied to a thread Interpreting NF Circle ang Gain circle for matching network in Analog Integrated Circuit (IC) Design, Layout and FabricationGamma_L is used for Power Gain ..7 replies | 446 view(s)
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26th March 2020, 19:23BigBoss replied to a thread Interpreting NF Circle ang Gain circle for matching network in Analog Integrated Circuit (IC) Design, Layout and FabricationNFmin is a single point and NF Circles are rounding this point by sacrificing NF value.So the best NF can be obtained at that point only, then first...7 replies | 446 view(s)
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26th March 2020, 13:25BigBoss replied to a thread Getting nonlinear model for JFET and GaAsHEMT transistor in RF, Microwave, Antennas and Optics-You will design a simple LNA so you don't have to simulate this simple circuit.All you need a simple Vgs Voltage generator trough a Bias Stub ( or...9 replies | 887 view(s)
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25th March 2020, 23:12BigBoss replied to a thread Getting nonlinear model for JFET and GaAsHEMT transistor in RF, Microwave, Antennas and OpticsNonlinear Models are not %100 necessary for a good design.All you have to do is to design a matching circuit for Lowest Noise with a appropriate...9 replies | 887 view(s)
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25th March 2020, 00:02What type of Mixer you would to design ?? -Integrated or Discrete ? -Active or Passive ? -Diode or Transistor ? -Single Balanced or Double...3 replies | 407 view(s)
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24th March 2020, 20:18BigBoss replied to a thread SMA-Microstrip transition removal for large-signal measurement of PA in RF, Microwave, Antennas and OpticsNow I have seen the problem..As I said before.. GND connection is too poor.26 replies | 1278 view(s)
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23rd March 2020, 20:18BigBoss replied to a thread SMA-Microstrip transition removal for large-signal measurement of PA in RF, Microwave, Antennas and OpticsYour test board is not so good at all..Ground connections are extremely sensitive at RF frequencies and its' GND connections are very poor. Find a...26 replies | 1278 view(s)
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23rd March 2020, 20:10Ulrich Rohde has an in-depth analytical textbook about oscillators.I recommend it to follow..The Design of Modern Microwave Oscillators for Wireless...5 replies | 533 view(s)
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15th March 2020, 07:04BigBoss replied to a thread Difference between ADS simulation and the experimental measurements in Analog Integrated Circuit (IC) Design, Layout and FabricationPost your layout and schematic here, let's see.3 replies | 322 view(s)
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13th March 2020, 18:28BigBoss replied to a thread can i connect 2 rf amplifiers to get higher amplification? in RF, Microwave, Antennas and OpticsTheoretically yes, practically no..13 replies | 870 view(s)
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12th March 2020, 21:03BigBoss replied to a thread ADS and S11 Equations for L & C in Electromagnetic Design and SimulationPlot "ipart" on a Smith Chart and see how reactive part of the Input Impedance changes.. As seen from S11, Input Impedance has no inductive part.15 replies | 1259 view(s)
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8th March 2020, 16:36BigBoss replied to a thread SMS7630 Series modeling for small signal in ADS in RF, Microwave, Antennas and OpticsThe additional elements in the first picture are not included model because they are just package parasitics.There isn't any small signal model in...3 replies | 340 view(s)
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5th March 2020, 20:24BigBoss replied to a thread Need suggestion to select an (1GHz) Oscilloscope (Tek 5 series Vs R&S RTO2000) in Miscellaneous EngineeringGo with Tektronix in my opinion.3 replies | 396 view(s)
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4th March 2020, 19:41Either you calculate or not, nF or uF range of capacitors are not possible by its nature..5 replies | 402 view(s)
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4th March 2020, 19:36BigBoss replied to a thread Convergence problem in RGB CRT-based projection TV in Analog Circuit DesignConvergence is adjusted on Deflection Yoke of the CRT ( I talk about standard CRT TV Tubes ) and this is fixed at the factory but still adjustable..5 replies | 330 view(s)
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4th March 2020, 06:42Use separate LDO for both uC and Digital Potentiometer.And use separate GND copper pours for AGND and DGND. This is important because DGND may have...2 replies | 259 view(s)
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3rd March 2020, 12:33The RF Transistors that are found in aliexpress may be fake or second hand so I say pay attention.. There are so many claims about them in the...3 replies | 341 view(s)
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3rd March 2020, 12:30Can Input Impedance be in uF or nF range for an RFIC ?? Answer is simple, never... So, it will logically be pF range..5 replies | 402 view(s)
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2nd March 2020, 07:08BigBoss replied to a thread trying to find radio oscillator to use. in RF, Microwave, Antennas and OpticsIs that oscillator 3 octaves ?? 70-200 MHz.. Check it again.. I have never seen an oscillator more than 2 octaves..14 replies | 814 view(s)
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1st March 2020, 19:39BigBoss replied to a thread How to manage a specific pdk’s nmos HB simulation in Virtuoso ADE? in Analog Integrated Circuit (IC) Design, Layout and FabricationDid you enable Device Currents ( ALL ) in Saving Options in ADE ??1 replies | 90 view(s)
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1st March 2020, 06:43BigBoss replied to a thread Target 3001 issues- offboard components and adding television flyback transformer? in Service Manuals, Requests, Repair TipsDo you intend to re-create a out-of-service FB transformer ??2 replies | 295 view(s)
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