Search found 4 matches

by qwerty15
Thu Oct 11, 2007 4:28 pm
Forum: General Discussion
Topic: efficient, low cost, high gain rf cellular power amplifer
Replies: 11
Views: 3058

i understand and appreciate your concern; however, i am not an amateur to electrical engineering. I have a B.S.E.E. , but I have never built an amplifier before and would like to get into it. I have the knowledege of Electromagnetics, Antennas, etc to be able to work on a design and understand it. I...
by qwerty15
Thu Oct 11, 2007 8:49 am
Forum: General Discussion
Topic: efficient, low cost, high gain rf cellular power amplifer
Replies: 11
Views: 3058

efficient, low cost, high gain rf cellular power amplifer

hi, I am looking to design an efficient, low cost, high gain dual band rf cellular power amplifer. does anyone have any schematics they have used in the past? any good antenna designs if any, etc? maybe i should use a class A amplifier with two diplexers and a lot of filtering? what are your thought...
by qwerty15
Thu Oct 11, 2007 8:47 am
Forum: Computer Programming
Topic: efficient, low cost, high gain rf cellular power amplifer
Replies: 0
Views: 1734

efficient, low cost, high gain rf cellular power amplifer

hi, I am looking to design an efficient, low cost, high gain dual band rf cellular power amplifer. does anyone have any schematics they have used in the past? any good antenna designs if any, etc? maybe i should use a class A amplifier with two diplexers and a lot of filtering? what are your thought...
by qwerty15
Thu Oct 11, 2007 6:09 am
Forum: Computer Programming
Topic: high accuracy self calibrating temperature logger
Replies: 3
Views: 2703

high accuracy self calibrating temperature logger

hi guys, what is the cheapest way to design a high accuracy self calibrating temperature logger? Could I use opamps and maybe 2 RTDs to achieve this? The recording temperature range is -40F to 112F...what do you guys think? I appreciate your help in advance. are there any micros out there that can m...