BigBoss
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Yesterday, 20:16BigBoss replied to a thread RF Mosfet Class E PA for Dummies or absolute idiots in Analog Circuit DesignBut that amplifier is not Class-E.. It seems Class-A In order to understand Class-E Power Amplifiers, you have to read Grebennikov's "High...1 replies | 43 view(s)
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18th July 2019, 11:16BigBoss replied to a thread Oscillator jitter transient simulatin in spectre in Analog Circuit DesignTransient Analysis does not measure Jitter..How it's gonna do that ?? Even Transient Periods are not same at t=0 and t=any and vary by time. Jitter...13 replies | 303 view(s)
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15th July 2019, 15:40BigBoss replied to a thread Want to download CST and HFSS software in Electromagnetic Design and SimulationYou can request CST Microwave Design Studio Student Version from www.cst.com. Also, Antenna Magus may be available for your purpose..1 replies | 152 view(s)
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12th July 2019, 02:35BigBoss replied to a thread How to reduce Harmonic Balance simulation time in Spectre in RF, Microwave, Antennas and OpticsOversample Factor is too much that's why your simulation is so slow.. Since the waveform does not have extreme shape ( ringing,overshoot,hardly...6 replies | 326 view(s)
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11th July 2019, 12:52BigBoss replied to a thread what is the significance of the transit frequency and maximum frequency of oscillatio in RF, Microwave, Antennas and OpticsfT : The Frequency where the Short Circuited Current Gain drops to Unity of Active Device ( BJT or MOS etc.) fmax: Maximum Available oscillation...5 replies | 227 view(s)
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10th July 2019, 16:55whats the meaning of spectral analysis and scalar analysis ?1 replies | 146 view(s) -
9th July 2019, 20:43BigBoss replied to a thread pins of symbol and layout do not match in ASIC Design Methodologies and Tools (Digital)Is that PDK complete ?? It ought to be..Otherwise there is no sense to use it. You cannot make them a pair ( schematic and layout views ) if there...4 replies | 184 view(s)
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9th July 2019, 20:38BigBoss replied to a thread what happens to RF choke while doing ac analysis in RF, Microwave, Antennas and Optics-Self Resonance Frequency is the functional limit of the RFC so that RFC cannot be used beyond SFR due to changing behavior of its nature.( beyond...5 replies | 230 view(s)
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9th July 2019, 19:15BigBoss replied to a thread what happens to RF choke while doing ac analysis in RF, Microwave, Antennas and OpticsRF Choke will act as Open Circuit for AC Signals and Av=-gm*rds will be as you have remarked ( Open Circuit Voltage Gain ). Another advantage of...5 replies | 230 view(s)
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9th July 2019, 17:38Are you sure ??1 replies | 94 view(s)
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9th July 2019, 17:31BigBoss replied to a thread pins of symbol and layout do not match in ASIC Design Methodologies and Tools (Digital)Why don't you use directly Layout-XL-->Update ?? What is Binding for ?4 replies | 184 view(s)
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9th July 2019, 17:26BigBoss replied to a thread The relation among power, bandwidth and harmonics in Analog Circuit DesignThere is no relationship between Bandwidth and Harmonics. Harmonics are produced by Non-linear Transfer Function of the Active Devices and they are...3 replies | 214 view(s)
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5th July 2019, 23:17BigBoss replied to a thread problem when zooming to see layers in ASIC Design Methodologies and Tools (Digital)Increase Stop level..7 replies | 386 view(s)
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5th July 2019, 07:42BigBoss replied to a thread [ADS]method to establish correlation between LNA EM simulation and circuit simulation in Electromagnetic Design and SimulationYou will solve these kind of problems by experimental methods.I cannot tell you now how a good RF layout is done here because learning layout tricks...6 replies | 300 view(s)
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4th July 2019, 13:13BigBoss replied to a thread [ADS]method to establish correlation between LNA EM simulation and circuit simulation in Electromagnetic Design and SimulationNo, it's unrelated.. For instance, let's imagine a TL and L-C combined matching circuit.. And you're not sure the exact position of the...6 replies | 300 view(s)
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4th July 2019, 09:34BigBoss replied to a thread Suggestion to design a matching network in RF, Microwave, Antennas and OpticsAn analytical method may be found but it's so hard..4 replies | 323 view(s)
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4th July 2019, 09:33BigBoss replied to a thread Is it feasible to manually draw from scratch a 2-layer PCB inside HFSS in Electromagnetic Design and SimulationStandard PCB packages such as Altium, Kicad etc. cannot draw this type of precise Microwave layouts. I would draw this layout in AutoCAD ( or...2 replies | 199 view(s)
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4th July 2019, 09:27BigBoss replied to a thread [ADS]method to establish correlation between LNA EM simulation and circuit simulation in Electromagnetic Design and SimulationThe method is to optimize component values over layout that has already been simulated and characterized by s-parameters. In order to do this, you...6 replies | 300 view(s)
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4th July 2019, 06:17BigBoss replied to a thread Bi-directional amplifier for Wi-Fi in RF, Microwave, Antennas and OpticsThere are many 2.4GHz WiFi Fronts Ends here.. https://www.qorvo.com/products/integrated-products/wifi/wifi-network-equipment6 replies | 303 view(s)
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3rd July 2019, 20:19BigBoss replied to a thread Altium design information in PCB Routing Schematic Layout software and SimulationI think Altium has a Manufacturing Outputs to create such docs in ver. 19....2 replies | 209 view(s)
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1st July 2019, 22:18There is no such RF Layout Fundamentals..There are some Basic Principles and Rule of Thumbs while designing a RF PCB or MMIC/RFIC Layout....3 replies | 211 view(s)
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1st July 2019, 22:13BigBoss replied to a thread HSPICE as simulator in advance design system (ADS) for pole/zero analysis in RF, Microwave, Antennas and OpticsADS Design Environment is not compatible with HSPICE at all..But AWRs MWOFFICE is compatible.. If you're able to get a chance Cadence Spectre...1 replies | 122 view(s)
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1st July 2019, 20:21BigBoss replied to a thread RF Filter Design Book Recommendation in RF, Microwave, Antennas and OpticsThere are lot of good books on Classical RF Filters including Distributed Ones but SAW and BAW Filters are roughly Technology Dependent on the...3 replies | 161 view(s)
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27th June 2019, 23:00My sentence structure was a bit lossy above.. I meant that, S11 and S22 are both not good enough even for 175 MHz. I suggest you to use...9 replies | 373 view(s)
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27th June 2019, 21:35Transmission Lines are not necessary, you can also use equivalent L-C components instead of them.But the problem is here that you're trying to match...9 replies | 373 view(s)
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27th June 2019, 18:44BigBoss replied to a thread how to eliminate oscilation in current measuring circuit ? in Power ElectronicsYou're doing something wrong.. You measure a current and you couple 2 OpAmps on a poor breadboard with components mounted "space technique" .OpAmps...4 replies | 253 view(s)
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27th June 2019, 18:35You're trying to match this BJT with a simple L-C matching circuit but there is a sample app. circuit in its datasheet and they matched this BJT with...9 replies | 373 view(s)
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26th June 2019, 23:05BigBoss replied to a thread Any way to make a rounded rectangle non-plated hole in Altium? in PCB Routing Schematic Layout software and SimulationA hint... Place a SMD Square with Rounded Corners then place a Donut on it with a Drill Diameter smaller than Inner Circle ..5 replies | 285 view(s)
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26th June 2019, 21:46BigBoss replied to a thread Design of Isolator in Ansys Electronics in RF, Microwave, Antennas and OpticsYou can of course use Ansys HFSS for that project but Ansys Design Environment is not very practical such designs.I recommend you to use Keysight ADS...2 replies | 181 view(s)
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