gsm bursts - results edaboard.com

mc34063/33063 power supply problem

i have used 34063 is my power supply design for an automotive gadget design. circuit diagram is attached. constant power requirements are around 300 ma with temporary surges of 1500ma at 4.2v. but i have been so far unable to get a clean supply. the...
Power Electronics :: 06 Oct 2009 18:19 :: FvM :: Replies: 5 :: Views: 396

sim300

hi everybody, is here any one working on sim300 if so, is there any thing to be added other than the circuit provided in schematics provided in ver 2.02. because i getting rdy after power on but its not detecting sim card when sim card is placed. i ...
Professional Hardware and Electronics Design :: 16 Sep 2009 9:54 :: mpch_elec :: Replies: 145 :: Views: 37840

gsm output power levels. please help

hi everybody, i have an question regarding gsm phone power outputs.from what i can understand a typical gsm900 phone radiates at a maximum of 2watt and because of the tdma usage the average maximum power level is 250mw.for a gsm1800 phone the power l...
RF, Microwave, Antennas and Optics :: 17 Jun 2009 16:31 :: Aya2002 :: Replies: 8 :: Views: 654

:: :: :: Replies: :: Views:

gsm signals detection

hi,, i have a question about gsm signals,that when we make or receive calls what kind of signals are there and can we detect these signals??...
Digital communication :: 18 Apr 2009 6:28 :: pranam77 :: Replies: 16 :: Views: 1167

cdma versus gsm..

pls discuss gsm versus cdma aplication..ty to all...
Electronic Elementary Questions :: 20 May 2007 6:45 :: lordsathish :: Replies: 29 :: Views: 3282

speech codec info

hey guyzi want etsi papers for gsm speech codecthanx...
Digital communication :: 25 Mar 2007 0:29 :: Yasser A.Nour :: Replies: 4 :: Views: 540

flickers by gsm phone

why gsm phone cause flickers in moniter screen while receving the call or sms etc while cdma or wcdma does not?......detail answer will be appretiated...
Digital communication :: 09 Mar 2007 1:19 :: bee :: Replies: 4 :: Views: 258

my final project - need help ( wireless comm + matlab)

use matlab for the projectthe project is about gsm. while the standard modulation in gsm is gmsk, an 8-psk modulation scheme was introduced later. the project is based on 8-psk.the questions below are essentially guidelines for your project, requiri...
Digital communication :: 09 May 2006 20:33 :: nick_533 :: Replies: 7 :: Views: 1050

satellite network monitoring system

i want to develop a c/c++ base satellite network monitoring system.the satellite network consist of data, video and voice services. the parameters to be monitored are power received, links down, signal to noise ratio, video quality etc.please give so...
PC Programming and Interfacing :: 25 Mar 2006 23:04 :: ee_control :: Replies: 5 :: Views: 951

gprs power supply

hi, what is best low cost & small size option for gprs power supply?...
Digital communication :: 18 Feb 2006 8:57 :: eeklac :: Replies: 5 :: Views: 583

antenna test for phones using power meter

can anyone advice me on whether it is appropriate to use power meter to test for gsm phone antenna. the test is to ensure that the antenna is connected/soldered properly onto the pcb. it can be on any gsm band. it is feasibility to do it? thanks!!!...
RF, Microwave, Antennas and Optics :: 26 Jan 2006 22:20 :: plasma :: Replies: 7 :: Views: 283

help:gsm's phase eror

hi allwhen i measure the phase error of dcs and pcs.if tx power is more than 22dbmthe phase error of 0-6 bits were increase and failed, other bits were not.i use midamble to synchronize burst, frequency is ok.what will cause the phase error?please he...
RF, Microwave, Antennas and Optics :: 19 Jul 2005 16:26 :: katykaty03 :: Replies: 23 :: Views: 1636

gsm security / eavesdropping , possible ?

is it by any mean possible that the cell phone becomes an eavesdropping device?. assume a person has a gsm phone in his t-shirt pocket and the cell phone is on. can any one in the gsm core network listen to that person talking without this person mak...
Electronic Elementary Questions :: 10 Jun 2005 10:28 :: MRFGUY :: Replies: 8 :: Views: 780

modulation problems on gsm phone

when test a phone on spectrum due to the modulation for dcs , i found that when pcl =15,10 , fail happens at 400khz , 600khz away from the carrier , but when pcl=0 , its ok. could u help me ?thanks...
RF, Microwave, Antennas and Optics :: 16 Oct 2004 12:27 :: martinthorn :: Replies: 5 :: Views: 789

Page 1 of 1	All times are GMT + 1 Hour
Ostatnio szukano: radiation patern sram memory model 24ghz nntenna labview microchip divide sram memory 1000v dc dc to dc converter guitar preamp keep on stable the gain

Abuse || Administrator || Moderators || Support us || sitemap
While the administrators and moderators of EDABoard forum will pursue any attempt to remove or edit any generally objectionable material as quickly as possible, it is impossible to review every message. Therefore you acknowledge that all publications posted in this forums express the views and opinions of the author and not the administrators, moderators or webmaster (except for publications posted by themself) and hence will not be held liable. This site and the owner's are in no way legaly responsible for any of the uploaded files, or responsible in any way for any damage legal or electronic that is the result of the use of the uploaded files. Only demo & share/free ware software stored here. EDAboard is in NO WAY legaly responsible for any "linked to" or "mentioned files" that are in anyway altered from the orginal file specifications. EDAboard.com does not deliver any information about our users. EDAboard.com will, if required (Police, FBI, CBS asking), provide complete information (IP numbers, times, etc.) about any user who uploads illegal files or posted illegal content on public forum. User takes complete legal responsibility for all files and content uploaded or posted on forum! Illegal files will be removed immetiately after notice. Furthermore we will add them to our file-filter and notice moderators, so they can't be uploaded again. EDAboard.com is against software piracy or any kind of copyright infringement. Unfortunately some users don't respect our rules. We apologize for any kind of misuse of our service and promise to do our best to find and terminate abusive files. Just write an e-mail to administrator and give the exact links to the files