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ieee802.16a
hi! could someone provide me some materials about ieee802.16a wireless broadband acess standard?or give me your opinion about the potential for ieee802.16a to dominate wireless last miles acessthanks...
RF, Microwave, Antennas and Optics :: 03 Jun 2003 2:34 :: cawan :: Replies: 2 :: Views: 711
data using dtmf over gsm voice systems
i want circuit schematic and source code for sending data over gsm voice and on any wireless voice gadgets...
Microcontrollers :: 27 May 2003 21:34 :: cancel :: Replies: 2 :: Views: 834
siemens wireless module ac35/ac45 for automotive
does anybody have documentation, manual and interfacing schemes for this wireless module?i need them as soon as possible. thanks in advance....
RF, Microwave, Antennas and Optics :: 22 May 2003 17:55 :: econtrol :: Replies: 2 :: Views: 488
writing paper
i m a mphil student and the research topic is about antenna design.how can i avoid my paper rejected by ieee reviewer??my paper already rejected by ieee ap.anyone can share their writing paper skill??...
RF, Microwave, Antennas and Optics :: 20 May 2003 1:39 :: flatulent :: Replies: 7 :: Views: 735
wireless auction system
hi alli am the very beginner in rf systems. i have a project rf based auction system. simly the handheld devices to use in a auction. min 400 devices must work in same room. now i dont have a idea. i think i must use premade modules from radiometrix ...
RF, Microwave, Antennas and Optics :: 16 May 2003 6:23 :: orpheus :: Replies: 0 :: Views: 582
new ubicom (scenix) ip3000™ family
icom.com/products/ip3000/ip3000_processors.htmlh**p://w*w.ubicom.com/pdfs/products/ip3000/processor/ip3k-dtb-3023-101.pdfthe ip3023 has been designed from the ground up for the unique requirements of wireless networking and packet processing. unique ...
Microcontrollers :: 28 Apr 2003 10:12 :: silvio :: Replies: 1 :: Views: 680
commerical analog phone circuit
anyone has circuit for commericial analog phone? i need the interface portion, need to hook a codec up to the phone line.thanksahgu...
Hobby Circuits and Small Projects Problems :: 24 Apr 2003 18:23 :: glitch :: Replies: 3 :: Views: 599
manchester encoding?
helloi need some info on manchester encode and decode.it is useful that someone describe the benefits of this method for transmitting data and its applications.bye...
Professional Hardware and Electronics Design :: 24 Apr 2003 0:46 :: gorkin :: Replies: 3 :: Views: 448
wireless hf modem
hii want to khnow some about available hf and wireless modems ( bw,modulation,... ), and design of themthanks in advance...
Professional Hardware and Electronics Design :: 21 Apr 2003 17:49 :: flatulent :: Replies: 1 :: Views: 229
anti jam wireless modem?
what is the way to design a wireless modem with anti jamming capability ?some link and info about jamming methods and anti jamming for wireless system(data tx/rx) design is needed by me.regards...
Professional Hardware and Electronics Design :: 21 Apr 2003 0:41 :: flatulent :: Replies: 1 :: Views: 271
cywusb6942 - wirelessusb™ baseband ic
http://www.cypress.com/1.0 features• low-cost, low-power, 2.4-ghz wirelessusb basebandic• frequency-hopping, spread-spectrum (fhss)• coexists with other 2.4-ghz systems• low latency, high throughput• bidirectional communication• forward e...
PC Programming and Interfacing :: 16 Apr 2003 1:12 :: elcielo :: Replies: 0 :: Views: 754
high data rate rf transmitter and rf receiver module!!!
hi guys, i need a rf transmitter module which able to transmit data over 64kbits/s and rf receiver module which able to receive data over 64kbits/s. can anyone here suggest one good module. i would preference rf transmitter and rf receiver module us...
RF, Microwave, Antennas and Optics :: 14 Apr 2003 12:40 :: cancel :: Replies: 3 :: Views: 610
power mesfet/gaas fet bias - a hint.
a hint for pa designers:it is well known the problem to bias a power mesfet or gaas fet due the need to have a negative gate voltage.does anybody tried to do the gate bias using a resistor at source instead of a negative power supply? i have been usi...
RF, Microwave, Antennas and Optics :: 10 Apr 2003 10:12 :: nandopg :: Replies: 7 :: Views: 1085
wireless lans and noise
where can i find info on wireless lans and noise?...
RF, Microwave, Antennas and Optics :: 09 Apr 2003 10:46 :: eladg :: Replies: 1 :: Views: 440
wireless network
hello guys can anybody help me in building a wireless network i want to connect a couple of micro controllers to my pc via the com port so if anyone got anything(pdf file , links,..) to give please post replythx in advance...
PC Programming and Interfacing :: 28 Mar 2003 15:39 :: Phil woz ere :: Replies: 8 :: Views: 2047
horn antenna and wireless lan
how to adjust so high reactive impedance (50+j60) of horn antenna because im not sure that i can adjust output(input)impedance of wireless lan card?what is exactly output impedace of this card, is it exactly 50r of real part and 0r of imag. or some e...
RF, Microwave, Antennas and Optics :: 23 Mar 2003 12:40 :: cray :: Replies: 1 :: Views: 810
1x modem and pic18f452
hi, i work on a project who need to connected on the internet by using bluetree 1x modem (wireless). my system works very well with a standard dial-up modem. th problem is here : the authentication does not use pap protocol, but chap protocol.does...
PC Programming and Interfacing :: 22 Mar 2003 4:08 :: silvio :: Replies: 1 :: Views: 1379
systemview has its own forum
new forum to discuss everything about systemview.http://www.elanix.com/forum/index.php...
Electromagnetic Design and Simulation :: 17 Mar 2003 23:42 :: Bogyman :: Replies: 3 :: Views: 1846
how can i make an ir tx/rx to connect it to pc mainboard?
hi...im so lost in making ir circiut to connect it to the mother bourd of a normal pc... i tried to make this two adapters... but no one works,,, 1) usb to infrared adapter. 2) ir port adapter (which im asking for).... so plz i need a tested schema...
PC Programming and Interfacing :: 14 Mar 2003 1:47 :: MielGibson :: Replies: 11 :: Views: 2146
cm45
how i can find data sheet of cm45 of siemens...
Professional Hardware and Electronics Design :: 09 Mar 2003 4:22 :: dd2001 :: Replies: 2 :: Views: 426
system simulate
hi,guyswho can tell me which is the best eda software about system simulate.systemview?cossap?serenade symphony?......lydufeb 24...
Microcontrollers :: 07 Mar 2003 15:48 :: talap :: Replies: 7 :: Views: 1050
rf connectors
i was wondering how to determine which connector is suitable for 2.4ghz application. what determines the suitability of a connector and why. is ita) the matterial of metalb) the matterial of insulationc) the distance between the center and shieldd) d...
RF, Microwave, Antennas and Optics :: 03 Mar 2003 7:35 :: pewang :: Replies: 8 :: Views: 943
what is microphonics?
hi all, what is microphonics in rf world?best rgs...
RF, Microwave, Antennas and Optics :: 25 Feb 2003 15:33 :: flatulent :: Replies: 9 :: Views: 1261
ADS
:: :: :: Replies: :: Views:
intruder alarm system design
if anybody hav intruder alarm system design and circuit pls helpindy...
Professional Hardware and Electronics Design :: 25 Feb 2003 13:55 :: 7rots51 :: Replies: 2 :: Views: 516
wireless lan to lan bridge
what is the most cost effective way of connecting two 10baset lans operating in 2 line-of-sight buildings less than 1km away. the data speed required is very low and any rates of 128kbps or higher are acceptable. the connection has to be transparent ...
PC Programming and Interfacing :: 24 Feb 2003 12:43 :: cancel :: Replies: 6 :: Views: 950
128/256qam modulator/demodulator
im interested in 128 and 256qam mod and dem for dataspeed 155mb/s and above. does someone know available parts on net?...
RF, Microwave, Antennas and Optics :: 20 Feb 2003 22:01 :: dainis :: Replies: 8 :: Views: 1031
rx and tx antenna
there are two antennas on a wireless lan 802.11 card operating at 2.4ghz. tx and rx. i wonder how to put an external antenna on teh card. do i take two cables and make two waveguides. pls help....
RF, Microwave, Antennas and Optics :: 18 Feb 2003 16:50 :: flatulent :: Replies: 3 :: Views: 696
need help for design dsp-core for wireless application,
does anabody have such experences in desinging dsp core, ie, 0.25um cmos, what is the key between 8051 and generic dsp processor?...
PLD, SPLD, GAL, CPLD, FPGA Design :: 18 Feb 2003 10:18 :: MonkeyBusiness :: Replies: 1 :: Views: 946
2.6ghz dadio link
does anyone have any experiencein establishing 2.4ghz radio links?...
RF, Microwave, Antennas and Optics :: 18 Feb 2003 1:19 :: Lupin :: Replies: 10 :: Views: 1155
achieving antenna isolation within wireless systems article
achieving antenna isolation within wireless systems article...
RF, Microwave, Antennas and Optics :: 17 Feb 2003 3:08 :: uummcc :: Replies: 0 :: Views: 311
wireless applications with the ds1651 and ds1652 key lock ma
wireless applications with the ds1651 and ds1652 key lock match memory...
RF, Microwave, Antennas and Optics :: 13 Feb 2003 19:45 :: mbyka :: Replies: 0 :: Views: 349
wireless key board ?
hi, i would like to know how the wireless key board and mouse are connected to a pc. which frequency they are using. can anybody suggest any link where i can get design details of these devices.thank youitp...
PC Programming and Interfacing :: 12 Feb 2003 5:36 :: ITP :: Replies: 3 :: Views: 769
chipcon
hi,has somebody worked with chipcon chips?what do you think about them?what do you think they lack?what do you think it is a good point?thanks for your commentshumungusps: im evaluating using chipcon. i dont work for them;-)...
RF, Microwave, Antennas and Optics :: 11 Feb 2003 20:19 :: luc2002 :: Replies: 8 :: Views: 863
low-power transceiver targets wireless headsets article
low-power transceiver targets wireless headsets article...
RF, Microwave, Antennas and Optics :: 11 Feb 2003 10:04 :: uummcc :: Replies: 0 :: Views: 197
how to model a saw filter
hi, for system simulation, it is easy to place a filter in the simulation. however, in circuit level or component level, how can we put a saw filter in simulation? any suggest good model for the simulation (the equv. l, c, r) circuit?thanks in ad...
RF, Microwave, Antennas and Optics :: 07 Feb 2003 6:02 :: chiara :: Replies: 8 :: Views: 952
who knows ic: rx-28s -- vendor and data sheet
who knows the ic: rx-28s what vendor it come from ? also, i need its data sheet.it is the wireless control ic for tomy mini toy car, can control the mini car four direction: forward,backward,left,right.thanks...
RF, Microwave, Antennas and Optics :: 05 Feb 2003 23:55 :: night cat :: Replies: 3 :: Views: 487
maxim seminar about rf system design
maxim seminar about rf system design in 3rd generation wireless handsetsi hope it is useful~~~~memphise...
RF, Microwave, Antennas and Optics :: 28 Jan 2003 4:02 :: edinburgh :: Replies: 1 :: Views: 768
remote control wireless circuit
hi,i search for a wireless digital transmitter and receiver circuits.thanx...
Hobby Circuits and Small Projects Problems :: 27 Jan 2003 9:23 :: sortlaih :: Replies: 5 :: Views: 3109
help needed
i need to transfer information through sound channel.i want to use speakers as the trasmitter and microphone as the receiver.but i dont want the output from the speakers in form of noise.i just want it to be transmitted. is this possible.tx in advan...
RF, Microwave, Antennas and Optics :: 25 Jan 2003 13:47 :: Kit-the-great :: Replies: 5 :: Views: 398
wireless communications: free reference designs and tech
wireless communications:free case-studies, reference designs and technologyhttp://www.plextek.co.uk/pages/rack.htm...
Software Links :: 24 Jan 2003 18:07 :: igorilla :: Replies: 0 :: Views: 458
how do i link two microcontroller board via rf?
hi:i am working on a project which uses two boards build around atmel at90s8515. at present i am using rs232 to communicate between these two boards. in a longer run i would require to use rf to link these two boards. i know there are ready-to-use rf...
RF, Microwave, Antennas and Optics :: 22 Jan 2003 6:04 :: cb30 :: Replies: 17 :: Views: 1266
req: model for dielectric filter
dear all, dielectric filter is quite common used in wireless application. and this type of filter is comparatively high price in term of passive componet. so any one has some in-deep knowledge on how it model likes order of filters ? how can w...
RF, Microwave, Antennas and Optics :: 20 Jan 2003 20:05 :: g579 :: Replies: 3 :: Views: 435
soc design flow ?
what is typically employed ( softwares, chips ) for a soc design flow.regards...
Microcontrollers :: 20 Jan 2003 11:43 :: okguy :: Replies: 6 :: Views: 789
req: paper on modulation compension circuit
hi all, have you heard about modulation compension circuit (mcc)? in traditional wireless application because of use pll (phase locked loop), when there is a long string of zero or one in nrz application, it likes a very low frequency and this ...
RF, Microwave, Antennas and Optics :: 19 Jan 2003 23:02 :: flatulent :: Replies: 5 :: Views: 1067
how to design balun transformer
dear all anyone have the experience to design a balun transformer to convert the differential port to single port? moreover, how to measure the diffential port impedance with 2 port network analyzer?best regardsyuhohang...
RF, Microwave, Antennas and Optics :: 19 Jan 2003 3:32 :: mild-seven :: Replies: 14 :: Views: 4131
cellular phone blaster...
i posted this topic a year ago and never got an answer. elektroda family has grown a bit, maybe we have the knowledge now...i need a simple enough circuit to seriously disturb a cellular phone reception to make it loose the caller. i intend to use it...
RF, Microwave, Antennas and Optics :: 18 Jan 2003 9:56 :: owell :: Replies: 9 :: Views: 1539
agilent wireless academy
hello,agilent has a self-learning portal for rf designwith very good downloadble materials on wireless technologiesand rf design.its avilable on this linkhttp://www.tm.agilent.com.cn/wirelessacademy/thanks,drbell...
Software Links :: 16 Jan 2003 4:44 :: DrBELL :: Replies: 0 :: Views: 957
speed on wlan?
hi,i dont know if it is a good section for may question, but please read and answer if only you can ...my question is about real speed on d-link wireless products. ive testes d-link airplus products and ive achieved:- about 800kb/s (6.4 mbps) in 22mb...
Professional Hardware and Electronics Design :: 14 Jan 2003 7:22 :: Kit-the-great :: Replies: 3 :: Views: 828
wireless networks planning
i have c*e*l*l*u*l*a*r e*x*p*e*r*t 2.0 for a*r*c*g*i*s, but it is protected by s*e*n*tinel. which tool is best suitable for dumping hardware key? in this i need some help... :?...
RF, Microwave, Antennas and Optics :: 12 Jan 2003 22:35 :: VMatas :: Replies: 0 :: Views: 565
netgear mr814 firmware
does anyone have schematics, code etc. for the netgear mr814 wireless access point. it has a sammsung arm7tdmi based processor. i want to use two of these to create wireless bridge. :( problem is there is no way to make them client.help :cry: :cry:...
PC Programming and Interfacing :: 10 Jan 2003 22:34 :: redfox :: Replies: 1 :: Views: 654
i need an electro-beem scanning array antenna design
hi,im working on a posetioner device which locate beem or transmitter scource position... what i need is to build an array antenna with electronic scan structure to locate the source w/t moving the antenna or rotating it... you can see the attached p...
PCB Routing & Schematic Layout software & Simulation :: 08 Jan 2003 0:58 :: Hishamsaleh :: Replies: 4 :: Views: 1441
rf freq. divider
hi guys,i am looking for a solution to divide a 1.7 ghz osc. signal by 2 without using a digital divide-by-two chip.has anybody an idea to realise it with a more simple approach with normal lumped components ?i know the other way around is more easy ...
RF, Microwave, Antennas and Optics :: 07 Jan 2003 20:28 :: zorro :: Replies: 11 :: Views: 2415
rf and wireless software downloads
h**p://w*w.sss-mag.com/swindex.htmleverything for the ham radio enthusiast. it is all either freeware or shareware, and there is lots of it!!:)...
Software Links :: 31 Dec 2002 12:10 :: henry :: Replies: 0 :: Views: 1412
need help using the tc35 - gsm wireless module
how to set it up in data mode so it will answer a modem trying to connect to it.thanks....
Professional Hardware and Electronics Design :: 30 Dec 2002 13:40 :: cancel :: Replies: 2 :: Views: 440
5.6 ghz band. who are know about ....
hi!we are need:i/q modulatori/q demodulatorsige lna & pavco (or vcxo)dulpexerwho are know semiconductors that sell its ??regards, jackal. :-)...
RF, Microwave, Antennas and Optics :: 30 Dec 2002 3:47 :: hexiaoxiao :: Replies: 12 :: Views: 2272
circuit cellar issue #149.
hi to all,i have been asked to upload issue #149.i will upload the toc149 file. people wanting this issueplease express your need through a reply to this post.good bye. :roll: :roll:/ edit - use pm for ths kind of requests. dont post useless replys ...
Hobby Circuits and Small Projects Problems :: 24 Dec 2002 21:56 :: FANT :: Replies: 8 :: Views: 3084
pc wireless interface = help plzzzz
welcome im one project there is me subjects about some help one pc to pc wireless interface connects subjects information and www link projects short pc to pc internet share but ım circuit prepare buid thankyou all...
PC Programming and Interfacing :: 21 Dec 2002 3:45 :: digitech :: Replies: 0 :: Views: 649
digital lpg meter with rs232
i want an digital ckt schematic for reading lpg gas flow and sending data through rs232 or by wireless am or fm.please help me its to urgent...
PC Programming and Interfacing :: 18 Dec 2002 1:57 :: bsiswoyo :: Replies: 1 :: Views: 1075
compact flash interface with 8051 microcontroller
i am working on a data logger project where huge amount of time stamped data is to be stored. for economical reason storage into compactflash is required.can somebody provide me c code interface librarythankszastereo...
PC Programming and Interfacing :: 12 Dec 2002 9:07 :: Mr_Programmer :: Replies: 6 :: Views: 5624
schematics no one can help!!
:( i am refreshing my request, i want anyone to help me finding the schematic circuit of the tv tuner or lnb or spectrum analyser. thanks....
RF, Microwave, Antennas and Optics :: 06 Oct 2002 11:43 :: klug :: Replies: 1 :: Views: 2149
uhf/vhf wireless modules??
does anyone know where can i find a wireless module (400-450mhz) with 1-4w of output power. all i have found is with low power.thanks a lot,mimoto...
RF, Microwave, Antennas and Optics :: 24 Sep 2002 13:25 :: roli :: Replies: 10 :: Views: 2289
433 mhz... with more power..
thank you to all people who gave very interesting links.now any one wants to go over 100 metres ? i am looking for 100 mw.. 1 watt 433 mhz.. any help in the right direction will be very appreciated.thank you in advance.regards...
RF, Microwave, Antennas and Optics :: 24 Sep 2002 11:21 :: Trishool :: Replies: 9 :: Views: 2478
modem for a wireless transmiter?
hello,i would like to make an application for sending information from a pc to a remote (more or less) place with a wireless module. my intention is to use the rs232+comercial modem+433 wireless module. i have seen something similar. i don´t know muc...
Professional Hardware and Electronics Design :: 11 Sep 2002 2:24 :: Mr.Cool :: Replies: 3 :: Views: 652
video tx
anyone have a schematic for mixed data/video/voice wireless transceiver at 2.4 ghz?...
Professional Hardware and Electronics Design :: 10 Sep 2002 15:08 :: un_known :: Replies: 2 :: Views: 399
220v ac to 12v dc power supply?
hello i would like to design a power supply for a wireless transmiter (4w max output power with vin=12v). i don´t know much about power supplies and i would like to design a reliable and more or less small one. i would appreciate any sch. or link.tha...
Professional Hardware and Electronics Design :: 01 Aug 2002 9:51 :: coppervaporlaser :: Replies: 3 :: Views: 1030
ad825 audio preamp
hi,anybody have experience by the use of this op-amp in audio pre amplification?i check the net but could not find any interesting information.any information or link is welcome.thanks,hc :wink:...
Professional Hardware and Electronics Design :: 17 Jul 2002 4:32 :: shanren :: Replies: 2 :: Views: 946
spdif rx/tx wireless link
as i am in the proccess of designing a spdif wireless link using the philips tda1315h daio chip at both ends, if anyone has past experience on this topic, any comments or thoughts would be highly appreciated.cheerssda...
Professional Hardware and Electronics Design :: 16 Jul 2002 13:15 :: sda :: Replies: 2 :: Views: 1101
video and voice wireless transmitter
please send me links and comments on design of wireless video and audio transmitter and receiver (ic and modules).how to design in an addressable form....
Professional Hardware and Electronics Design :: 03 Jul 2002 10:34 :: rfmw :: Replies: 5 :: Views: 821
help modulating in fm
hey! im designing a system in fm, in 1.000 mhz to 2.000 mhz (yes mhz 1000khz), to modulate audio. in first time, i used the vco of a cd4046, so i connect a potentiomenter to it in a way to set the frecuency like this:+-------+......vcc|...cd...|......
Professional Hardware and Electronics Design :: 01 Jul 2002 12:23 :: penrico :: Replies: 3 :: Views: 595
rf meter ckt.?
hi ppl. can someone give me some link or idea with regards to rf meter ckt.? because i want to measure or monitor the rf output of the mobile phones. and i want to make or assemble an rf meter. thanks and i hope somebody can give me some link......
Professional Hardware and Electronics Design :: 21 Jun 2002 14:04 :: Yayo :: Replies: 2 :: Views: 572
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