Return-Path: Received: (qmail 10095 invoked from network); 25 Apr 2003 17:21:53 -0000 Content-Transfer-Encoding: 8bit Received: from warrior.services.quay.plus.net (212.159.14.227) by mailstore with SMTP; 25 Apr 2003 17:21:53 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 343 invoked from network); 25 Apr 2003 17:11:34 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from post.thorcom.com (193.82.116.70) by warrior.services.quay.plus.net with SMTP; 25 Apr 2003 17:11:34 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1996ih-0006cj-14 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 25 Apr 2003 18:10:43 +0100 Received: from [212.164.44.2] (helo=astral.omskcity.com) by post.thorcom.com with esmtp (Exim 4.14) id 1996iY-0006ca-5a for rsgb_lf_group@blacksheep.org; Fri, 25 Apr 2003 18:10:34 +0100 Received: from fitec.omskcity.com (mu07.dialup2.infomsk.ru [212.164.44.119]) by astral.omskcity.com (8.x.x) with SMTP id AAA3ea96b6e63f7 for ; Sat, 26 Apr 2003 00:07:58 +0700 (OSS) Date: Fri, 25 Apr 2003 23:11:56 +0000 (GMT) From: "Alexander S. Yurkov" To: rsgb_lf_group@blacksheep.org In-reply-to: <5.1.0.14.0.20030425162821.04396d98@u0019445.kuleuven.be> Message-ID: MIME-Version: 1.0 Subject: Re: LF: A conumdrum for the weekend - Image Can celling Mixer. Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Spam-Status: No, hits=-23.2 required=5.0tests=DATE_IN_FUTURE_06_12,EMAIL_ATTRIBUTION,IN_REP_TO, QUOTED_EMAIL_TEXT,REPLY_WITH_QUOTES,UPPERCASE_25_50, USER_AGENT_PINEversion=2.53 X-Spam-Checker-Version: SpamAssassin 2.53 (1.174.2.15-2003-03-30-exp) X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rsgb_lf_group-outgoing@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Hi, Group. On Fri, 25 Apr 2003, Rik Strobbe wrote: > At the upper leg : SIN(A) * COS(B) = SIN(A+B) + SIN(A-B) (ignoring the > divide by 2) > after the 90 degrees phase shift at the output = COS(A+B) + COS(A-B) > > At the lower leg : SIN(A)*SIN(B) = COS(A-B) - COS(A+B) > > Adding : COS(A+B) + COS(A-B) + COS(A-B) - COS(A+B) = 2*COS(A-B) > Subtracting : COS(A+B) + COS(A-B) - COS(A-B) + COS(A+B) = 2*COS(A+B) > > So that way theory seems OK. > And it is pointly the same way to depress undesired product wich was used many years ago for SSB forming by a phase method. This method was widely used in 50-th. 73 de RA9MB/Alex http://www.qsl.net/ra9mb