281 Threads found on edaboard.com: Pcb Coil Design
How can P*otel?
I advice u u read a bit this document. With protel only, it might be hard... :)
And I heard that this "method" need several prototypes and component implementaton can cause difference as well.
Like I've seen something on the inet :
PCB Routing Schematic Layout software and Simulation :: 25.01.2003 16:03 :: incognito :: Replies: 10 :: Views: 5660
It's not particularly a coil, rather than a short straight pcb trace. You'll have higher parasitic inductances a many places in your circuit. Unless you're targetting to a mutiple GHz microwave circuit, the note sounds rather ignorant. Strictly spoken, the inductance of a pcb trace can't be calculated without knowing the substrate height an
Hobby Circuits and Small Projects Problems :: 02.12.2010 16:24 :: FvM :: Replies: 6 :: Views: 1511
Im new to rf electronics and want to design an on-pcb coil to use in a tda7000 receiver circuit. I calculated the desired inductance as 250nH.
Altought im searching and reading about it for a while, couldnt make it. I tried asitic, agilent ads etc but ... no!
How can i calculate it and draw on proteus or even ms-paint =)
RF, Microwave, Antennas and Optics :: 13.03.2011 01:54 :: atakan_1907 :: Replies: 11 :: Views: 1209
to search some RFID product sheet,there is some information about pcb antenna.
In fact,the pcb antenna is microsrip antenna.
You may to
RF, Microwave, Antennas and Optics :: 15.04.2004 18:27 :: IICCEE :: Replies: 12 :: Views: 6266
Old Appcad for DOS has option for spiral pcb inductor calculation.
download appcadcl.exe and unpack it
RF, Microwave, Antennas and Optics :: 13.07.2006 07:52 :: Borber :: Replies: 20 :: Views: 2285
Can any one tell me what is the standard ISP/ICSP connector and configuration recommended by microchip?
As I noticed that the connector in above PICKIT2 LITE version is differ from EPIC programmer!
Also please conform me that the VDD from PICKIT2 LITE SE is through transistor, will it provide the voltage only during programming or all th
Microcontrollers :: 18.11.2007 14:38 :: sadat007 :: Replies: 154 :: Views: 116443
Sorry but the helical.zip includes "only" a program for calculating band pass filters with helical resonators and your need is notch or band stop filter.
-resonator impedance = means the transmission line impedance what is formed by the coil and the enclosure together (and this ranges from some hundred up to around thousand o
Professional Hardware and Electronics Design :: 17.05.2002 18:33 :: unkarc :: Replies: 18 :: Views: 10082
How can calculate spiral coil on pcb ?
PCB Routing Schematic Layout software and Simulation :: 13.02.2003 11:31 :: myasar :: Replies: 5 :: Views: 5214
Don't forget the best paper design can fall apart if the transformer construction and pcb/circuit layout is sloppy!
Professional Hardware and Electronics Design :: 31.10.2003 19:29 :: E-design :: Replies: 18 :: Views: 4394
You should have mentioned "thanks" to Marko, from who's project was inspiration to you.
View similar video here too.
Original project with pcb here:
Professional Hardware and Electronics Design :: 07.04.2010 16:27 :: pranam77 :: Replies: 21 :: Views: 5122
It will be very difficult to construct the antenna on pcb at this freq. The antenna should be part of resonant circuit tuned at 125khz. BTW, for RFID, as far as I know, freq. is 125khz, not 135. The antenna should have the approximate area of a credit card, and the number of turns should be around 30. Wire diameter : 0.3-0.5mm. As I said before, th
RF, Microwave, Antennas and Optics :: 22.03.2004 14:29 :: pisoiu :: Replies: 4 :: Views: 2405
What exactly is your definition of 'small dimension antenna'? and should the antenna be printed on a pcb or not?
hi i would like to dsesign 50 MHZ with small dimension which is better helical or lambda/4,remmeber small dimension antenna to operate in transfer data from pc to pc
RF, Microwave, Antennas and Optics :: 27.04.2004 16:42 :: unine :: Replies: 13 :: Views: 3636
Yes, an air-coil wire antenna is better than a pcb antenna assuming that you are using an usual FR4 material. This due to higher loss. You can try to use a wire length of lambda/8.
Theoretically the circularly coil give the best radiated resistance. You can flattened the coil and measure what gain you get, before and (...)
RF, Microwave, Antennas and Optics :: 08.04.2004 15:41 :: vfone :: Replies: 4 :: Views: 828
I'd like to know how you do perceive the problem...
Some logic circuitry crashes as operating relays, or transistors break?
Yes when relays turned off, sometimes logic circuit fails but bjt's are ok.
In schemes 1, 2 and 4, see that you're clamping the collector to vo
Professional Hardware and Electronics Design :: 17.07.2004 22:31 :: seyyah :: Replies: 23 :: Views: 6759
It seems that concern is pcb board design not a PSM core!
Electronic Elementary Questions :: 05.08.2004 11:52 :: mami_hacky :: Replies: 8 :: Views: 1768
In fact this not the printed structure (antenna,...) who have decided our choice of the software. We need to simulate multilasyers pcb with 3D connector and mechanical constraints.
The more accuracy results were obtained with CST. We have spent a lot of time with Ansoft reps and CST reps.
For the simple printed strucuture, like the antennas
Electromagnetic Design and Simulation :: 06.04.2005 12:39 :: greg12345 :: Replies: 11 :: Views: 1915
I have to design a pcb for a device which use RF-ID and i'm wondering which software i can use for this. I use O*cad and Pr0tel and none of them can design or calculate the parameter of the coil on pcb. I wait for your sugesstions.
Thanx a lot.
PCB Routing Schematic Layout software and Simulation :: 24.06.2006 07:21 :: cristivasilache :: Replies: 4 :: Views: 3316
A rough rule of thumb is 1nH per millimeter of straight track so 6.2nH is a very small inductor paticularly if you need some bends in it.
Printed coils have high flux leakage and are affected by close metal objects such
as other components or a metal box. You may need to fabricate several iterations of the pcb design or do a full (...)
Hobby Circuits and Small Projects Problems :: 29.07.2006 12:16 :: throwaway18 :: Replies: 4 :: Views: 1120
You must check the noise figure after putting uStrip and real components with real model provided from manufacurer for them.
for instance if you use ATC caps you should use actual models for actual real values available from company.other wise the results you are going to get is very different from what you simulated
i am very busy and less l
RF, Microwave, Antennas and Optics :: 14.01.2007 22:00 :: malijan :: Replies: 68 :: Views: 7413
The load is not just inductor - it is tuned to working frequency . All capacitors and chokes are used to - filter harmonics and match the pcb antenna impedance to PA output impedance .
Regarding 3 capacitors usage , i suppose it is to get final capacitor value to tune pcb antenna choke which is fixed topology (you have to repeat coil (...)
RF, Microwave, Antennas and Optics :: 23.12.2006 23:07 :: artem :: Replies: 22 :: Views: 13988
Hi, I am Murali. I am doing 12Ghz LNA design using microstrip .I am using ATF36077 HEMT FET as the transistor and pcb(Er=10.2).I am using ADS2005A for simulation.
My goals for the design is gain>10dB, noise figure<0.8dB.
I am getting 11.4dB for gain and noise figure=0.778 at 12GHz for my simulation.
My Question is:
RF, Microwave, Antennas and Optics :: 04.03.2007 05:07 :: Murlix :: Replies: 12 :: Views: 922
okay. i built that amp on pcb and it works... but i'm not getting the desired gain i need. I'm thinking that i need to design a different, smaller antenna for this to work. i'll look into inductive coupler as mentioned.
RF, Microwave, Antennas and Optics :: 25.07.2008 19:05 :: newbie007 :: Replies: 18 :: Views: 10420
Usually, loop antenna is a good way to realize near coupling. You can search some RFID antennas as examples. It can be realized by multilayer pcb, Flex Printed Circuit, or just wrap a wire to form a coil.
RF, Microwave, Antennas and Optics :: 06.11.2008 00:26 :: winglj :: Replies: 5 :: Views: 2673
sorry,reread my post, it doesn't explain it too well.
standard step-up boost circuit for this switch element being a mosfet.
See, if you short the output, the current flows thru the Rsc the coil and the diode, which then proceeds to release smoke.
Because the switc
Electronic Elementary Questions :: 25.11.2008 00:51 :: xaccto :: Replies: 10 :: Views: 4222
The pcb on my golf trolley appears to have a tilt switch embedded in the relays which control the power output to the motors. The number on the relay is SLB-12VDC-SL-C SONGLE 14VDC NO40A NC30A. There are four relays on the pcb. I want to replace them with ordinary relays as currently the trolley stops everytime it gets a bump. I would like to eithe
Hobby Circuits and Small Projects Problems :: 26.01.2009 20:08 :: gco :: Replies: 6 :: Views: 3257
Those are the first words i write in this forum which i found amazing for all electrical engineers and hobbyists. I m from middle east, jordan. And i m an electrical engineer. But i still have no idea about fabricating pcb's at home niether creating layouts using softwares. I tried couple of times to use ORCAD to learn pcb's but it didnt work
PCB Routing Schematic Layout software and Simulation :: 24.06.2009 12:29 :: AhmadAbuOmar :: Replies: 51 :: Views: 10045
The return signal automatically flows through the GND plane directly below the signal trace, because by doing so the loop inductance of the circuit is minimized.
Currents on the pcb follow the path of least inductance. The only way for that to happen is if the return current travels directly under the signal trace on its way back to the
PCB Routing Schematic Layout software and Simulation :: 21.12.2009 20:07 :: s_cihan_tek :: Replies: 10 :: Views: 2801
Understanding Ferrite Bead Inductors
Ferrite beads are much more compact and can be easily mounted on a pcb.
Analog Circuit Design :: 21.01.2010 17:18 :: checkmate :: Replies: 5 :: Views: 2037
6-pole LC tubular layout, with L=4 nH, and caps to ground 2.5-5.5 pF, coupling caps around 0.5 pF. coil Q 200 (easily at this frequency) and cap Q 1000 (can use single layer cap or make cap from rogers pcb), you should get insertion loss of 2.5 dB or less. If you can live with less rejection, the insertion loss would be even lower with less pole de
RF, Microwave, Antennas and Optics :: 01.12.2010 00:14 :: Phytech :: Replies: 7 :: Views: 541
Project uploaded @:
(you need to rename to .emp)
Can you both do some simulations on this coil with different tools. I have accurately measured Q
D = average diameter
b = trackwidth
coils and measured Q
1) D= 100 mm , b = 20mm Q = 891
2) D= 100 mm , b = 3mm Q = 393
3) D= 30mm, b = 6mm
Electromagnetic Design and Simulation :: 02.02.2011 23:26 :: Darkcrusher :: Replies: 31 :: Views: 2392
Hi everyone... Since I'm also working on the same project, I'll explain a bit more on the requirement... We have an RF transceiver chip that sends out RF signals. This will be routed to an RF Switch IC (HRF-SW1030), where it's switched between 6 channels. Each of the 6 channels is connected to an antenna coil (and associated passive components to m
RF, Microwave, Antennas and Optics :: 11.03.2011 06:23 :: pramodp :: Replies: 13 :: Views: 2008
I search some experiences and accounts about embedding a heater in pcb.
I need to keep a part of my design at 80°C and, therefore, plan to use a long a thin copper track as heating element.
What do you think about this?
Thank you in advance.
PCB Routing Schematic Layout software and Simulation :: 29.04.2011 13:57 :: Thoma HAUC :: Replies: 11 :: Views: 1471
I reviewed the available SM130 documents and think, they are missing important informations about the designed antenna matching. ISO14443/Mifare will be using a tuned multiple turn pcb coil, but the details depend on the reader characteristic, that isn't given. Can you tell the chip manufacturer/type of the reader IC? I expect, that you'll (...)
RF, Microwave, Antennas and Optics :: 19.07.2011 10:49 :: FvM :: Replies: 13 :: Views: 753
I wish to build this small video modulator
RF MODULATOR D.I.Y.
I would like to make a version with the inductors etched on the pcb instead of hand wind.
The old DOS version of appcad can calculate spiral inductor values, so I think I can manage to do it. The problem is that I do not know t
Analog Circuit Design :: 09.08.2011 16:12 :: neazoi :: Replies: 8 :: Views: 458
Let´s say the the bottom part of the sample must be free, because there will be detection with the microscope.61418
You can gen an idea from the picture, the 1th layer (from the bottom) is a thins glass cover (the microscope will be under this one) the middle layer is the reservoir layer and the last one is PMMA and contain
RF, Microwave, Antennas and Optics :: 13.09.2011 12:30 :: PaoloDellaVedova :: Replies: 19 :: Views: 658
I am from a Printed Circuit Board shop, recently, we have a lot of order with integrated inductance design on board. The coil trace is etched on both outer layer and inner layer.
I am looking for a effective tester to perform online inductance test. Can anyone introduce:
- The manufacturer of pcb inductance tester?
- How to calculate (...)
PCB Routing Schematic Layout software and Simulation :: 22.09.2011 10:08 :: lcf0719 :: Replies: 2 :: Views: 1263
I used some calculator which shows that if I use 2 oz. copper, I need 7 mm. That would be too wide. If I used even thicker copper, I'm afraid that I would be not good for other trace, or unless we could design the thickness of copper for certain trace?
would it be a good idea to use 2 oz. copper with 1mm width and cover it with solder layer
Electronic Elementary Questions :: 27.10.2011 14:43 :: HDingmar :: Replies: 4 :: Views: 403
I got a file here for non-inverting buck-boost converter; I designed as they suggest. www.
Analog Circuit Design :: 08.06.2012 21:05 :: Mithun_K_Das :: Replies: 28 :: Views: 4204
This is the schematic:
I had a simple schematic for this geophone (same brand and model), it was designed for what i want (record seismic events): so insted of the old ADC on the schematic i replace with the ADS1211P and keep the rest of the circuit..
Analog Circuit Design :: 16.12.2011 03:50 :: nadabro :: Replies: 33 :: Views: 2106
FM transmitters can be really simple, the issue with tyhem is drift,a nd if your using this in a vehicle or wearing it, then thats gonna be a real problem.
Heres a reasonably simple circuit that is crystal locked, and doesnt produce square waves, beware though you have to make this and most others on the designed pcb for it, I tried this one on
Hobby Circuits and Small Projects Problems :: 13.02.2012 16:09 :: dr pepper :: Replies: 25 :: Views: 1134
Okay that does clear things up, thanks.
So your RX coupling and resonating coils are very close together, and thus probably have poorer performance than just a matched resonating coil would alone. The TX resonating coil, on the other hand, probably will help because it acts to increase the coupling between the TX and RX sections. So (...)
RF, Microwave, Antennas and Optics :: 20.02.2012 23:27 :: mtwieg :: Replies: 20 :: Views: 625
i am trying to simulate a core-less pcb transformer with maxwell 14 3d .
my problem is that i have assigned coil terminals to 2 faces of a copper spiral but when i validate the design i get this error for my terminal:
Illegal external (...)
Electromagnetic Design and Simulation :: 20.02.2012 20:07 :: rd1381 :: Replies: 0 :: Views: 583
I think you must need to produce this design after layout. We are professional pcb supplier in China. Any interest please contact me by email@example.com. Thanks! -Andy
Analog Circuit Design :: 05.04.2012 05:14 :: Andy_Gao :: Replies: 10 :: Views: 411
You have posted in the "pcb Routing Schematic Layout software and Simulation". Are you trying to simulate the circuit? Or do you simply want help to make it (and have posted in the wrong place)?
If you are trying to make it, see this page for help making the transistor/relay part:
Then you need to
PCB Routing Schematic Layout software and Simulation :: 05.05.2012 12:05 :: FoxyRick :: Replies: 21 :: Views: 677
i had a doubt regarding which coaxial cable to use for connecting each helix to the feed. i am using an array of 4 helices.and to connect them i used a feed pattern which looks like +(plus) which i am going to etch on a pcb. and i want to place the helix on each terminal. But i need a specific height (18mm) for the helix so i need a cable(18mm) to
Electromagnetic Design and Simulation :: 07.07.2012 09:25 :: ruchak :: Replies: 8 :: Views: 514
I am trying to choose antenna for my pcb. My design is very small in size (7 x2 cm?). I am using a cc430 micro controller with integrated radio module. The radio module does not contain antenna and related circuitry and it is upon the user to decide how to use the antenna. With a frequency of 433 MHz, it is very difficult to operate with
RF, Microwave, Antennas and Optics :: 02.08.2012 14:50 :: Chetan Joshi :: Replies: 5 :: Views: 490
I want to prepare/create/build an electronic card which is used to provide the variable DC voltages from 0 V DC to 30 VDC of 5 Amps to 6 Amps automatically in such a way that when the web film roll has the bigger or larger diameter the card should provide larger or maximum output DC Voltage & Amps and as the diameter (circumference) of the web film
Electronic Elementary Questions :: 01.09.2012 21:02 :: danishdeshmuk :: Replies: 52 :: Views: 1381
Wanted some guidance here
Was looking into Power Mosfets with low Rdson for my converter and found TI has good ones
should i choose the mosfets with the lowest on resistance or should have moderate Rdson ?
Secondly i see that the MOSFETs come in SON packages, and as what i have seen they do not have protruding leads like a DIP package
Will a ro
Analog Circuit Design :: 17.04.2013 08:27 :: vinayakdabholkar :: Replies: 83 :: Views: 2220
I am designing a relay switching board whick will switch 230 V AC 5A Motors. In my pcb design, I am trying to use one layer 2 oz/ft^2 copper.
I am just guessing if such a routing as in the attachemen
PCB Routing Schematic Layout software and Simulation :: 30.10.2012 10:13 :: SBTECH :: Replies: 8 :: Views: 905
Microchip's application note says Iin = Vhfrms/(Xc1 + R1) ....... I thinks it is wrong....... Why don't they consider filtering capacitor and load resistance.......
Outstanding. Many thanks for a very detailed but simple to understand explaination. Just for info... C1 is basically made up from 3x 330nF caps in p
Analog Circuit Design :: 26.12.2012 14:08 :: Aalia Nebhan :: Replies: 18 :: Views: 703