BigBoss
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13th December 2019, 23:06BigBoss replied to a thread Basic 12v Battery VOLTAGE METER, more resolution needed in Elementary Electronic QuestionsThere are 7-Segment Voltmeter kits with 3-Digits at aliexpress.The cost is lower than what you do by yourself7 replies | 329 view(s)
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13th December 2019, 14:13BigBoss replied to a thread ADS Simulation of Circuit -Help in Electromagnetic Design and SimulationYour Nonlinear model is not correct and this transistor is obsolete. If I were you, I use more recent part ( CE3512K2) for its equivalent and...8 replies | 434 view(s)
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9th December 2019, 18:03Lumped Components serve well here..No need Microstrip structures.. The Simplest Form is a Parallel LC in series or a Series LC in Parallel or...7 replies | 337 view(s)
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9th December 2019, 15:55Before all, have you ever considered Decoupling Capacitors placed juts after Lambda/4 Transmission Lines ?? You will have to place and be sure that...2 replies | 263 view(s)
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9th December 2019, 15:47BigBoss replied to a thread The difference between IIP3 and P1dB in RF, Microwave, Antennas and OpticsIP3 has theoretically 9.6dB more than P1dB and it shows Third Order Intermodulation only.It doesn't mean the the amplifier is more linear or less...2 replies | 180 view(s)
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6th December 2019, 11:39BigBoss replied to a thread Question about phase noise simulation using cadence and ADS EM simulation. in Analog Circuit Design"Wholly EM Simulated" does not make sense at all.. You can make an EM Simulation for Inductor only then replace EMView into Schematic or Extracted...2 replies | 236 view(s)
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6th December 2019, 03:39This one may be an alternative for you.. page 10-11 https://www.nxp.com/docs/en/data-sheet/SA604A.pdf13 replies | 578 view(s)
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5th December 2019, 13:06Since the Bandwidth is so large as remarked, there are not so many possibilities to down to -100dBm..If you increase the bandwidth , the MDS will be...13 replies | 578 view(s)
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5th December 2019, 01:33BW=29 MHz NF=3.1 MDS=-174+3.1+10*log(BW)=-96.xx dBm.. Bandwidth and NF is pretty high to measure -100dBm signal strength.( I didn't include...13 replies | 578 view(s)
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3rd December 2019, 04:17BigBoss replied to a thread 1~1.5 GHz Waveguide bandpass filter design tool in RF, Microwave, Antennas and Opticshttps://www.mician.com/products/%CE%BCwave-wizard/3 replies | 334 view(s)
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2nd December 2019, 03:40BigBoss replied to a thread 1~1.5 GHz Waveguide bandpass filter design tool in RF, Microwave, Antennas and Optics1-1.5 GHz Frequency Band is too low for Waveguides,As you know well Waveguides have Lower Cut-Off Frequencies.3 replies | 334 view(s)
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2nd December 2019, 03:33Are you sure that you will able to find HSMS2850 Schottky Detector Diodes ?? They are obsolete coming form HP days..6 replies | 389 view(s)
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1st December 2019, 23:27BigBoss replied to a thread Simple 50R I/O RF attenuator (1-30MHz) in RF, Microwave, Antennas and OpticsThis company manufactures some interesting components which you may be interested in.. http://en.yantel-corp.com/pro_show_id_19.html14 replies | 551 view(s)
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30th November 2019, 01:35BigBoss replied to a thread 2.4GHz WiFi module causing interference on 433MHz RF receiver module in RF, Microwave, Antennas and OpticsUsing a SMPS to drive a BT Module is not a good idea unless the PS is very clean.Placing this BT Module around this PSU is an worse idea due to EMI...6 replies | 440 view(s)
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29th November 2019, 14:29BigBoss replied to a thread Building Blocks on an FM Band Receiver in RF, Microwave, Antennas and OpticsA typical BPF should has 1dB ( more or less ) Insertion Loss at those frequencies, not 10dB. This Insertion Loss will surely reduce the Sensitivity...7 replies | 425 view(s)
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29th November 2019, 01:42BigBoss replied to a thread Building Blocks on an FM Band Receiver in RF, Microwave, Antennas and OpticsBefore amplifier, you should use a filter to clean out the unwanted signals such as VHF , Air Traffic, Amateur Band signals. Otherwise the Amplifier...7 replies | 425 view(s)
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26th November 2019, 11:58BigBoss replied to a thread Design of LNA using CMOS transistor in RF, Microwave, Antennas and OpticsThere is no such CMOS Transistor for LNAs.There were some discrete pHEMTs, BJTs once upon a time but all have gone.. Some Infineon BJTs and some...2 replies | 626 view(s)
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21st November 2019, 21:08The answer was there.. When you simulate any kind of circuit in fact you're using a special calculator. nothing more ..And every element has been...4 replies | 417 view(s)
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21st November 2019, 21:01This is true only and only the Resonators are NOT coupled yet ( standalone ), Coupled Resonators will interact each other and Eigen Frequencies will...3 replies | 448 view(s)
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21st November 2019, 09:14BigBoss replied to a thread Help with electromagnetic interference in Class E amplifier in Power ElectronicsClass-E Amplifiers are naturally Switched Mode Amplifiers and they generate lot of harmonics due to its nature. The solely method is to reduce the...2 replies | 240 view(s)
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20th November 2019, 07:52BigBoss replied to a thread [moved] Video transmitter for TV in Hobby Circuits and Small Projects ProblemsYes, you can connect HDMI PC Output to CVBS Input of the TV by using MINI HDMI 2AV adapter. If the TV set hasn't got CVBS Input, you will have to...3 replies | 339 view(s)
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19th November 2019, 09:06gm=derivative(Ids/Vgs)(whilst Vds=constant) Obtain Ids vs Vgs and take the derivative of this curve..7 replies | 469 view(s)
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17th November 2019, 13:55BigBoss replied to a thread Insertion loss reduction for matching networks in PA design in RF, Microwave, Antennas and OpticsIf the Impedance Matching Circuit has been carefully designed, S11,GammaS,GammaL and S22 will all be zero (ideal case) so what rests ?? Just S21....8 replies | 677 view(s)
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17th November 2019, 11:07BigBoss replied to a thread Insertion loss reduction for matching networks in PA design in RF, Microwave, Antennas and OpticsNo.. You're doing a serious mistake.. If there is a Optimum Load Impedance to be matched to 50 Ohm, the Generator Impedance ( call it as Port-1)...8 replies | 677 view(s)
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17th November 2019, 10:10BigBoss replied to a thread Insertion loss reduction for matching networks in PA design in RF, Microwave, Antennas and OpticsBut this Insertion Loss is according to 50/50Ohm Terminations and if you change Optimum Load Impedance with Source Impedance, the Insertion Loss...8 replies | 677 view(s)
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17th November 2019, 01:32BigBoss replied to a thread Insertion loss reduction for matching networks in PA design in RF, Microwave, Antennas and Optics-You presume that the PA has 50 Ohm Optimum Load Impedance right ?? But it's not practically true..Have you ever really found it as 50 Ohm ?? I...8 replies | 677 view(s)
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16th November 2019, 11:21BigBoss replied to a thread Broad band dsign of LNA best topology in RF, Microwave, Antennas and OpticsFollow the Textbook of Thomas Lee..7 replies | 520 view(s)
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16th November 2019, 04:08BigBoss replied to a thread Keysight ADS ground connection in schematic not reflected in layout in RF, Microwave, Antennas and OpticsYou have to use VIAs, no way out.Is there any other possibility to connect a Stub to GND in reality ?? No.. So, VIAs are necessary..In order to...8 replies | 706 view(s)
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