Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate
that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views.
It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if
you would like to post something on RF Cafe's
page, please do.
Below are all of the forum threads, including all
the responses to the original posts.
Post subject: BPSK MODULATOR DESIGN Posted: Fri Oct 07, 2005 9:46 pm
want to design BPSK modulator for my communication system.I am very new to this stuff.I want to modulate 2 signals
like one is information signal 1 khz freq while other is PN code 1 MHz freq ,and i want to modulate this signal
using BPSK technique,but i dont have any idea about how to implement BPSK in hardware.
Could you please
let me know that how can i achive this BPSK modualtion using hardware?could you please send me some basic idea,
circuit or somthing which can help me to move ahead ?
Post subject: Posted: Sat Oct 08, 2005 12:30 am
Step number 1.
Posted: Sat Oct 08, 2005 12:34 am
Buy a 1k ohm resistor.
Let me know when you've done that and I'll
tell you the next step.
Post subject: BPSKPosted: Sun Oct 09, 2005 7:02
You need either a double-balanced mixer (see www.minicircuits.com) or its digital equivalent, the
exclusive-OR gate. Exor your 1kbps data with your 1 Mbps PN stream, then go to your modulator (dbm or exor) at
whatever frequency you need..
Post subject: BPSK
modulatorPosted: Mon Oct 10, 2005 3:26 am
Buy a 1k ohm resistor.
Let me know when
you've done that and I'll tell you the next step.
Hi ,I have 1 K resistor with me.
could u please
let me know the next steps in detail?
Post subject: bpsk
modulatorPosted: Mon Oct 10, 2005 3:50 pm
i do have 1 K resistor wid me cud u please let me
know the next step?
Can - Helper
Post subject: Posted: Sun Oct
16, 2005 9:36 pm
Use double balanced mixer (DBM) with DC - Fmax response. Also find out more about DC offset.
Post subject: BPSK ModPosted: Sat Oct 29, 2005 1:08 pm
Did you ever try using a
MAXIM device such as the MAX2900? They have an evaluation board available.
It's better then a 1K resistor.