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Design >> RF Design >> how to choose technolgy
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Message started by balu304 on Sep 28^th, 2004, 3:35am

Title: how to choose technolgy
Post by balu304 on Sep 28^th, 2004, 3:35am

sir!
i am new to this group.i am having basic doubt.i want to design a RF receiver for 900 Mhz.some will use 0.7u,some others will use 0.25u..how can we choose.
tell me will there be lot of cost difference if i choose 0.25 instead of 0.7u technology.
Moreover,most of the university students are going for lessthan 0.25u,wont they think over cost..?
i am using double balanced down conversion mixer,inductive degenerated LNA,and filters,opamp.i am new to RF area.can anybody help by answering some basic qns (i am doing M.E.project).
thanks&regards..

Title: Re: how to choose technolgy
Post by Frank Wiedmann on Sep 28^th, 2004, 4:27am

This of course depends on the exact requirements, but getting an RF receiver for 900 MHz to work in a 0.7u technology will probably be difficult. As an introduction into RF design, I can recommend the book by Thomas Lee, see http://www.designers-guide.com/Books/#Lee-2003.

Title: Re: how to choose technolgy
Post by extractor_man on Nov 24^th, 2004, 1:33am

Depends on the product requirements in terms of :

Ft, noise, power consumption, cost, Breakdown voltage, design difficulties, ...

You have also to think on which technology you want to design:

RFCMOS
BICMOS SiGe
or III-V technology

For 9MHz requirement you need a technology with FT of 10x9MHz = 9GHz.

It should be very difficult to design with CMOS0.7 to reach 900MHz!