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christos
Joined: 18 Apr 2007
Posts: 1
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 18 Apr 2007 15:43 Re: Latest RF tutorial uploaded |
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| hello to everyone!i need some help so i'm going to ask anyone who knows about LNA(low noise amplifier) please help me.I'm looking for LNA tutorial explaining every detail about low noise amplifier.Anyone that knows where i can find a tutorial please write the link.Thank you in advanced and i hope to help you in a similar situation
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MV
Joined: 04 Nov 2005
Posts: 4
Location: INDIA
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| 18 Apr 2007 22:19 Re: Latest RF tutorial uploaded |
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hi friends,
I am uploading my notes on RF on to the web. As a part of that i initially created a webpage on frequently used RF definitions. Please give me feedback on this topic whether i need to improve anymore... in terms of quality of tutorial, page appearance, etc., Next topic is on MIXERS..........
http://rf.circuits.googlepages.com/rf-introduction.html
http://rf.circuits.googlepages.com/rf-definitions.html
Awaiting for ur feedback..........
Thanks in Advance
-MV
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E-design
Joined: 01 Jun 2002
Posts: 769
Helped: 55
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| 18 Apr 2007 23:40 Re: Latest RF tutorial uploaded |
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Don't cross post
http://www.edaboard.com/viewtopic.php?t=243678&highlight=
and don't hijack this thread!
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tieuquaybk
Joined: 30 Apr 2005
Posts: 75
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| 01 May 2007 13:46 Latest RF tutorial uploaded |
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those tutorials on www.rfic.co.uk are great, but the only inconvenience is that we must enter all the parameters by hand (i mean those parmameters for transistor's model). That is a long list and take much time to complete.
Odyseus! it's kind of u to up load us those projects come with your tutorials or those models of transistor that you used.
Finally, thanks a lot for all ur sharing.
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Sadegh.j
Joined: 29 Nov 2006
Posts: 616
Helped: 29
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| 21 May 2007 9:16 Re: Latest RF tutorial uploaded |
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hi
any thing wrong with the website???
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sivanandyala
Joined: 17 May 2007
Posts: 24
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| 22 May 2007 8:04 Re: Latest RF tutorial uploaded |
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| hi can any one help me in designing of circualr polarized microstrip antennas. i need some material in this regard
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livemath
Joined: 06 Jun 2007
Posts: 48
Helped: 6
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| 06 Jun 2007 17:02 Re: Latest RF tutorial uploaded |
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Hi Cristos,
The objective is not to exceed a specified noise figure values while achieving the highest possible gain. But because maximum power gain and minimum noise figure cannot be achieved simultaneously, in most cases we need to trade off one to achieve our objectives.
LNA design is the last stage in designing an amplifier, if you already selected the proper device the next step is to Bias your device. For most small signal condition linear operation is required and this demand that device operates in class A mode or Bias your device midrange in the IcQ-VceQ characteristic curves. Next is to Measure the S-Parameters of the device at the selected Q-point. The next stage is to check the stability condition at particular frequency, sometimes you need to draw the input and output stability circles and determine the stable region, use Unilateral design if S12=0 or if S12≠0 compute the unilateral figure of merit and find the error range and if big otherwise use the bilateral analysis and design.
Next and the last stage is to design the input and output matching network based on LNA requirement where you define the noise figure or NF, Power Gain and the S-Parameter, you can find all this information from your device datasheets.
I'll be posting few tutorial in the future
Goodluck....
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daniels_here
Joined: 23 Jun 2007
Posts: 15
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| 29 Jul 2007 3:08 Re: Latest RF tutorial uploaded |
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hi,
can any one help with antenna impedance matching with ansoft designer?
thanks alot
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pengfei_f
Joined: 12 Dec 2006
Posts: 1
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| 02 Aug 2007 3:17 Latest RF tutorial uploaded |
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| Oh Oh...
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nguoidumuc204
Joined: 21 Aug 2007
Posts: 1
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| 21 Aug 2007 16:32 Latest RF tutorial uploaded |
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where schematic diagram ? ex : PDF format tutorial for FM receiver ? I wana find them now .
Can you link to me ?
Thank alot !
i'm new member !
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amirs4
Joined: 23 Aug 2007
Posts: 15
Helped: 1
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| 23 Aug 2007 11:52 Re: Latest RF tutorial uploaded |
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| i want to know the antenna design using hfss for 55-64 Ghz frequency range
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amirs4
Joined: 23 Aug 2007
Posts: 15
Helped: 1
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| 24 Aug 2007 6:56 Re: Latest RF tutorial uploaded |
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| i want to design an antenna using HFSS for freq range 55-66 GHZ, can u help me in this regard, my email is amirs4(at)excite.com
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Ponlakit
Joined: 28 Oct 2007
Posts: 1
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| 29 Oct 2007 4:27 Latest RF tutorial uploaded |
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| thank you very much
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serville
Joined: 29 Nov 2007
Posts: 5
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| 29 Nov 2007 14:06 Latest RF tutorial uploaded |
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hi i want to know all about r/tws 434 tutorial?
can you link to me, please ??
thanks you very much
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engtokhy
Joined: 10 Dec 2007
Posts: 3
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| 10 Dec 2007 11:36 Latest RF tutorial uploaded |
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i want to contact with any one
work with Quantum Cascaded Laser
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sined
Joined: 25 Dec 2007
Posts: 2
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| 25 Dec 2007 19:22 Latest RF tutorial uploaded |
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| thank you very much
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chactor
Joined: 10 May 2006
Posts: 9
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| 07 Jan 2008 10:58 Latest RF tutorial uploaded |
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| how can i download the materials you uploaded
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waver411
Joined: 18 Oct 2006
Posts: 34
Helped: 2
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| 20 Jan 2008 16:44 Latest RF tutorial uploaded |
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Thanks for your work!
It give me lots of Good!
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zirtapoz
Joined: 25 Dec 2007
Posts: 73
Helped: 2
Location: finite space
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| 23 Jan 2008 14:03 Re: Latest RF tutorial uploaded |
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Good job..
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Tot
Joined: 22 May 2007
Posts: 18
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| 25 Jan 2008 16:06 Latest RF tutorial uploaded |
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| Thank you for the fantastic files
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Tot
Joined: 22 May 2007
Posts: 18
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| 25 Jan 2008 16:06 Latest RF tutorial uploaded |
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| Thank you for the fantastic files
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rflna
Joined: 31 Jan 2008
Posts: 3
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| 31 Jan 2008 17:47 Re: Latest RF tutorial uploaded |
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hi friends ,
I am new to this RF design and i am doing project in this field can u please help me in designing the LNA by providing material. see the design schematic in the attachment.please help me
Regards
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rflna
Joined: 31 Jan 2008
Posts: 3
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| 31 Jan 2008 17:51 Re: Latest RF tutorial uploaded |
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hi,
need some help in designing LNA. so who knows designing LNA please help me. I'm looking for LNA tutorial explaining every detail about low noise amplifier.Anyone that knows where i can find a tutorial please write the link.Thank you in advanced and i hope to help you in a similar situation
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ramkimtech
Joined: 21 Feb 2007
Posts: 16
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| 04 Feb 2008 17:14 Thoma lee book |
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| hi everybody, i need Thoma lee book on " the design of cmos radio frequency integrated circuits", can any body please help me
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rflna
Joined: 31 Jan 2008
Posts: 3
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| 27 Feb 2008 18:05 how to plot noise figure vs frequency using LTspice |
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hi,
can anybody help me in drawing noise figure vs frequency using LTspice tool.
Regards
rflna
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wireless man
Joined: 24 Feb 2008
Posts: 31
Helped: 1
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| 05 Mar 2008 9:28 Latest RF tutorial uploaded |
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wonderfull job!!
Could you do some power amplifier design tutorial?
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nicita
Joined: 10 Mar 2008
Posts: 15
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| 11 Mar 2008 14:54 Latest RF tutorial uploaded |
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Hi, is there someone that cuold help me with load-pull analyses in ADS?
My problem is related to the parameters S11_rho and S11_center, I don't understand the way to set up them.
Another thing...I need some documentation about load-pull problems, does someone know good books or something else?
Tnx...
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mfhanif
Joined: 11 Jan 2007
Posts: 9
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| 12 Mar 2008 19:56 Re: Latest RF tutorial uploaded |
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| odyseus wrote: |
Hi all,
It's been a while but I've managed to upload another tutorial to
www.rfic.co.uk
This one is satellite communications and is under the systems & devices section...
Differential LNA almost finished - just need to add some equations for linearity.
Bye for now
Ody  |
hi,
thanks for those good tutorials.... do you have tutorials on Power Amplifier design??
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etoile
Joined: 25 Jan 2008
Posts: 13
Helped: 2
Location: Paris
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| 28 Mar 2008 11:44 Latest RF tutorial uploaded |
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| Really wonderful job .. i have visited the site .. it helps a lot...
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rda
Joined: 15 Apr 2008
Posts: 12
Helped: 1
Location: Algeria
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| 15 Apr 2008 16:49 Re: Latest RF tutorial uploaded |
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thank's for this link!
it help me so:D
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