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odyseus

Joined: 01 Jan 1970
Posts: 123
Helped: 2
Location: Cold & Wet Europe!

21 Jun 2004 23:10 rf tutorial

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 Surprised

odyseus

Joined: 01 Jan 1970
Posts: 123
Helped: 2
Location: Cold & Wet Europe!

17 Jul 2004 12:19 rf basics tutorial

Ok All,

I've updated and expanded the MOS C-S LNA.

I have now completed and uploaded a Differential MOS LNA Tutorial - that describes Diff LNA design for low noise and linearity calculations.

Bye for now Ody Smile

Uky

Joined: 03 Sep 2004
Posts: 77
Helped: 12
Location: Swedish West Coast

21 Oct 2004 6:58 rf design tutorial

Odyseus,

FYI:

I opened the PIN diode attenuator tutorial. Page 7 of 14 is blank.

odyseus

Joined: 01 Jan 1970
Posts: 123
Helped: 2
Location: Cold & Wet Europe!

17 Nov 2004 14:28 rf tutorials

Hi All,

I've at last completed the MOS Gilbert Cell Mixer Tutorial and can be found under the RFIC Circuits menu Smile

Normal web address www.rfic.co.uk..

I'm currently working on a MOS L-C oscillator followed by a Colpitts..

Bye for now

Ody

odyseus

Joined: 01 Jan 1970
Posts: 123
Helped: 2
Location: Cold & Wet Europe!

06 Feb 2005 13:52 tutorial rf

Hi All,

I've completed another tutorial on basic RF equipment design. This is based on a lecture given by a now retired engineer, i've added some more info plus some ADS examples.

It can be found under the Systems & Devices section.

The L-C oscillator tutorial is nearly done at last!

Cheers

Ody Smile

bhgaurav

Joined: 29 Jul 2004
Posts: 32

08 Mar 2005 7:43 low noise amplifier tutorial

boy your tutorials are amazing. can you have something up for interconnects

kent616

Joined: 09 Mar 2005
Posts: 19

15 Mar 2005 3:31 basic rf tutorial

odyseus, ur website is great...but can u have some thing about broadband LNA i need it very much.....i search a lot about 5.8 GHz broadband LNA (3 stage) , but do not know how to start?? Pls help....

bouchy

Joined: 11 Jul 2004
Posts: 111
Helped: 1

13 Apr 2005 1:44 rf fundamentals tutorial

What a terrific web site, excellent job. The web site is great as it is but if you can include some informations about (PA) module layout that will be superb.

Wonderful job,

Bouchy

linlin

Joined: 05 May 2005
Posts: 8

06 May 2005 9:35 lc vco tutorial

hei, wonderful job~

by the way, I would like some material about ring oscillator(900M), where can I find it? 3ks a lot~~

Willem

Joined: 17 May 2005
Posts: 43

17 May 2005 12:59 rf design tutorials

Hi

your site is really great, I use a lot of it in my studies.

Is it possible to put something up on dielectric resonator oscillators? In particular the design of them. I would really appreciate that.

thanks for a very informative site.

ahmad_abdulghany

Joined: 12 Apr 2005
Posts: 1369
Helped: 212
Location: Cairo, Egypt

03 Jul 2005 22:31 lna tutorial

I want to know if there is another tutorials starting from relativly low level .. how can i get them ??
thanks alot

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03 Jul 2005 22:31 Ads

odyseus

Joined: 01 Jan 1970
Posts: 123
Helped: 2
Location: Cold & Wet Europe!

26 Sep 2005 19:29 lna design tutorial

Hi all!

At last! - I managed to complete the L-C CMOS VCO (Variable Controlled Oscillator) tutorial - now under the RFIC Circuit menu.

Enjoy!

Cheers

Ody Very Happy

spbhu

Joined: 05 Dec 2005
Posts: 42

15 Dec 2005 17:06 rf circuit tutorial

Hi, thanks very much for your tutorial posted! It benefits us too much!
Just want to ask, for the differentail cs LNA,why we have no load for ac-simulation, why a 50ohms terminal is needed for s-parameter simulation? I am confused about this question for a long time! Hope for you answer... Thanks very much

Added after 22 minutes:

Hi, I have another question. Can you show how to design a buffer following the LNA stage? What should be the load of the buffer? Is it 50ohms? Thanks

xxargs

Joined: 28 Jul 2002
Posts: 231
Helped: 44

15 Dec 2005 22:31 rf system tutorial

spbhu wrote:

Most measure equipmet is build for 50 Ohm reference (10 Ohm give very small distace between transmissions line and 900 - 1500 Ohm give very wide distance like High voltage air hanged power line and couple of meters between lines...)

Historic 600 Ohm using for air-hanged phone-line (around 400 mm distance between lines), 300 Ohm using for old TV and FM-broadcast depend of folded loop antenna give this impedances, and dipol give around ~75 Ohm and ground plane-antenna give ~50 Ohm. - and lastest used wide in mobile radio world and measure equipment build for this maket - and setting standard...

50 Ohm is only a reference - you can measure DUT in 50-Ohm NVA for making S-parameters and in simulators recalculate for example 300 Ohm port impedance or complex impedances typical situation on crystal-filters matching - or 2-5 Ohm typical on Power transistors in 1800 MHz etc.

I very fascinate first time long time ago I measure MF-filters separatly, feeding trasistors for this filter net, and complex load after this in separate S-parameter block.. (if not know feeding and load impedances first time - you need measure this as S-parameters)

MF-filters in VNA and 50 Ohm measure impedance seems like skit and crasy unrealistic value (if not know how this working - crystal filter seems possibly broken...).

But in simulator [1] - beginning feeding from S-parametes block transistor (I find working as current generator and high impedances) simulating as port in higher impedance value and filter going from very bad to good and after small adjust complex impedances (around 200-300 Ohm real part and small imaginary part), can make very good filters in simulators - and now understud why people mostly have tunable parallell resonace circurit each end of crystal-filters - just for make tunable very small amount of complex load in range of part of few pF to few nH or so... and very importent factor to give filter good shape.

...and back to phycial equipment now understud why how works and better to repair and tune this.

[1]

I try Vipec!! - open source linear simulator in first moment and working well for this experiment - and checking later on Ansoft for same result (but this is very expensive and need HW-keys/licenses... if using legal version... and give not so much more info compare to Vipec in this case)

/Xxargs

spbhu

Joined: 05 Dec 2005
Posts: 42

21 Dec 2005 15:52 rf amplifier tutorial

Thanks for you tutorial. Now I have a big problem when simulating the IIP3. How large load you put at the output port side? Just 50ohms ?But isn't the LNA connected to the mixer stage?And the effective load should be much large than 50ohms? (A few kilo-ohms?) Am I right?
How do you simulate IIP3 in ADS?There is a defined function called:ip3_in(), do you use this one to simulate ? The result from my simulation is quite strange, when I sweep the input power, it seems the IIP3 value increase, do you know why? Thanks very much for viewing...

jannovak

Joined: 23 Apr 2006
Posts: 1

23 Apr 2006 10:58 rf module tutorial

YIG tuned oscillator

juzi

Joined: 14 Jul 2005
Posts: 2

05 Jun 2006 13:38 rf circuits tutorial

:idea:hi, I've visite the site, it's wounderful. But there is not something about RF PA, especilly CMOS PA, Now I wonder information about this area.
many thanks!

spacedude25

Joined: 23 Jun 2006
Posts: 4

23 Jun 2006 14:01 rf oscillator tutorial

Hey, would be nice to find something about Helical Array Design, and mechanical design of helices.

Thanks! Very Happy

eejli

Joined: 24 Mar 2004
Posts: 114
Helped: 1

26 Jun 2006 8:06 low noise amplifier tutorial

Hi,

Could you also give an good tutorial on how to exactly set up the phase noise simulation in ADS for accurate pnoise prediction. My VCO is an LC cross coupled type and I found the spectreRF has different result from that of RFDE. It got to be some pnoise simulation setup problem.

Thanks.

mdeepamenon

Joined: 13 Apr 2006
Posts: 37
Helped: 1

07 Jul 2006 5:50 rf tutorial

please include synthetic apertures and metamaterials also.

kil

Joined: 15 Feb 2006
Posts: 83
Helped: 1
Location: banglore

14 Jul 2006 11:41 vipec tutorial

hi ,

i want to be in RF cmos design side so i am going through BOOK : THE DESIGN OF CMOS RADIO FREQUENCY OF INTEGRATED CIRCUITS

by thomas H. LEE
all i wnat to know is what are the prerequesists i have to learn so that i can go through this book as i am beginner of RF design . i have knowledge of cmos analog vlsi design issues as i have gone through baker.

i need guidence how to start and how i can proceed and what are the prerequesites

thanks and regards,
kil

hlasy

Joined: 21 Mar 2006
Posts: 20

11 Oct 2006 6:54 rf turotial

BOOK : THE DESIGN OF CMOS RADIO FREQUENCY OF INTEGRATED CIRCUITS

Any links ?

ajitg

Joined: 18 Mar 2006
Posts: 7

24 Oct 2006 20:08 rf tutorial

Hi,

Thomas Lee's book is pretty simple to read and he explains the basic concepts pretty well. If you have some Analog background, it just makes things easier. If you have some Microwave experience, it helps, but this is not needed.

Vokhuyet

Joined: 21 May 2006
Posts: 4

03 Dec 2006 13:19 rf circuit tutorials

I just read it but thank for your report

halmstad

Joined: 27 Oct 2006
Posts: 39

11 Dec 2006 21:30 radio frequency tutorial

hi odyseus

your rf tutorial is very good iam looking this type of tutorials and thank for uploading these tutorials and i have a project that was designing of LNA with 2 stage and specifications are

freq:1.42GHz
n.f:<0.5db
bandwidth:20MHz
gain:>20db

iam attaching all my circuits step by step.

please can you check all my circuits if you have time...and im using ADS s/w for my simulation. and i have to fabricate and implement also.

for this design im using amplifier utility from design guide in ADS s/w.

for matching im using designguide....tools....smith chart from ADS s/w

please see all the attachments in following link

http://www.edaboard.com/viewtopic.php?p=744795#744795

thank u
waiting for u r reply

Sadegh.j

Joined: 29 Nov 2006
Posts: 803
Helped: 33

02 Jan 2007 12:11 basic radio frequency tutorial

man!

Thanks! where can I find your tutorials on ADS?

arkamu

Joined: 01 Mar 2007
Posts: 37
Helped: 1

04 Mar 2007 20:48 rf game tutorial

has any one solution manual
of

mpozar 3rd edition i need it plzzzzzzzzzzzzzzzzzzzzzzzzz

tjunqueira

Joined: 09 Jan 2007
Posts: 35
Helped: 2
Location: Brazil - SP

06 Mar 2007 12:34 rfic design tutorial

Arkamu,
there is a topic with this book wher tou can download. Other way is to send me an e-mail and I send it you!
thadeuarj(at)gmail.com

nazanin

Joined: 05 Mar 2007
Posts: 997
Helped: 222
Location: iran

29 Mar 2007 5:10 rf concepts tutorial

you can download solution manual microwave by pozar edition 3 from link:

http://www.edaboard.com/viewtopic.php?t=223306&highlight=pozar+ebook+microwave

mickey_melomane

Joined: 16 Jun 2006
Posts: 55
Helped: 3

03 Apr 2007 18:41 rf systems tutorial

RFDesign byThomas Lee is very good as it covers a broad area of concepts in an intuitive manner... Very useful and interesting... covers the concepts of Bandgaps in the best way...

It even contains a set of design examples for GPS receivers...