Return-Path: Received: (qmail 6857 invoked from network); 26 Mar 2001 15:20:09 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 26 Mar 2001 15:20:09 -0000 Received: (qmail 11145 invoked from network); 26 Mar 2001 15:20:05 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 26 Mar 2001 15:20:05 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 14hYgS-0003aD-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 26 Mar 2001 16:13:28 +0100 Received: from imo-r16.mx.aol.com ([152.163.225.70]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 14hYgO-0003a8-00 for rsgb_lf_group@blacksheep.org; Mon, 26 Mar 2001 16:13:25 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from WarmSpgs@aol.com by imo-r16.mx.aol.com (mail_out_v29.5.) id l.a8.1307a98e (3970) for ; Mon, 26 Mar 2001 10:12:35 -0500 (EST) From: WarmSpgs@aol.com Message-ID: Date: Mon, 26 Mar 2001 10:12:34 EST Subject: Re: LF: RE: WOLF (BPSK) modulation continuous phase modulation. To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit X-Mailer: AOL 4.0 for Windows 95 sub 120 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: In a message dated 3/26/01 8:49:52 AM Eastern Standard Time, rik.strobbe@fys.kuleuven.ac.be writes: << So if one would send a 'rude BPSK' signal (as is created with an XOR gate) through a resonant LC-circuit you will get continuous phase shift at the output. The phase shift time will depend on the Q of the LC-circuit.... (snip).... A side effect will be that there is also some AM created, but this can be 'corrected' by an AGC amplifier (or just hard clipping, but this might increase bandwidth too much). >> Hard clipping will not increase bandwidth if one has indeed made the phase shift continuous by that point in the circuit. In fact, it will be a necessity. AGC could not be made fast enough to remove the amplitude variations, and if they are not removed, a practical power amplifier following the high-Q circuitry would tend to reintroduce extraneous sidebands. 73, John