Return-Path: Received: (qmail 7793 invoked from network); 21 Nov 2001 09:45:01 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 21 Nov 2001 09:45:01 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 26320 invoked from network); 21 Nov 2001 09:45:13 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 21 Nov 2001 09:45:13 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 166Trx-0001B8-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 21 Nov 2001 09:40:37 +0000 Received: from thick.mail.pipex.net ([158.43.192.95]) by post.thorcom.com with smtp (Exim 3.33 #2) id 166Trw-0001B3-00 for rsgb_lf_group@blacksheep.org; Wed, 21 Nov 2001 09:40:36 +0000 Received: (qmail 13192 invoked from network); 21 Nov 2001 09:38:14 -0000 Received: from userfr47.uk.uudial.com (62.188.26.122) by smtp-3.dial.pipex.com with SMTP; 21 Nov 2001 09:38:14 -0000 From: "Nick" To: rsgb_lf_group@blacksheep.org Subject: Re: LF: Phased rx Date: Wed, 21 Nov 2001 09:40:05 +0000 Message-ID: References: <5.0.2.1.2.20011120101111.00a2bb80@mail.pncl.co.uk> In-reply-to: <5.0.2.1.2.20011120101111.00a2bb80@mail.pncl.co.uk> X-Mailer: Forte Agent 1.8/32.548 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: On Tue, 20 Nov 2001 11:13:53 +0000, you wrote: >As for getting "beams", if you add together a lot of antennas on a long >baseline (tens of kilometres) whether for Tx or Rx you will get what >superficially look like multiple narrow "beams" with very deep (40-50 dB) >nulls between them. The longer the baseline or the more antennas you use >the more "beams" and nulls you will get. In fact, an interferometer. The >problem is that the "gain" in any one beam is miniscule, perhaps 0.5 >dB. Would the steerable attenuation be more useful for nulling out interference than the gain itself? Nick