{"id":282,"date":"2025-06-03T15:56:13","date_gmt":"2025-06-03T20:56:13","guid":{"rendered":"https:\/\/n9sgg.net\/?p=282"},"modified":"2026-01-20T17:51:15","modified_gmt":"2026-01-20T22:51:15","slug":"tayloe-demodulator","status":"publish","type":"post","link":"https:\/\/n9sgg.net\/index.php\/2025\/06\/03\/tayloe-demodulator\/","title":{"rendered":"Tayloe Demodulator"},"content":{"rendered":"\n<p>This article is the first in a series, documenting my journey building a Tayloe Demodulator as an HF radio receiver. This article focuses on a Spice simulation of a Tayloe demodulator.<\/p>\n\n\n\n<p>The schematic shown in Figure 1 was created with LTSpice, a well know Spice circuit simulator and schematic capture application. I recommend it.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"692\" src=\"https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image-1024x692.png\" alt=\"\" class=\"wp-image-284\" srcset=\"https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image-1024x692.png 1024w, https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image-300x203.png 300w, https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image-768x519.png 768w, https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image.png 1422w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Figure 1 -Tayloe Demodulator<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"561\" src=\"https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image-1-1024x561.png\" alt=\"\" class=\"wp-image-288\" srcset=\"https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image-1-1024x561.png 1024w, https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image-1-300x164.png 300w, https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image-1-768x421.png 768w, https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image-1-1536x841.png 1536w, https:\/\/n9sgg.net\/wp-content\/uploads\/2025\/06\/image-1.png 1910w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Figure 2 &#8211; Simulation at 14Mhz CW carrier<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\">Simulation<\/h2>\n\n\n\n<p>So, now we have a circuit simulation at 14 MHz input signal.. The Spice netlist is shown below<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-color has-white-background-color has-text-color has-background has-link-color wp-elements-6cc1ce0445739b179cc2351d691669c5\"><code>* Z:\\home\\n9sgg\\workspace\\DirectConverion_Tayloe\\Tayloe_Demod.asc\nXU1 N012 N001 N002 VP N004 0 N009 N010 N006 N005 N008 N009 N010 N006 N005 N008 ADG1209\nC1 N011 0 47\u00b5 V=50 Irms=1.49 Rser=0.044 Lser=0\nC2 N011 0 0.1\u00b5 V=16 Irms=0 Rser=11 Lser=0\nR1 N011 0 2.2K\nL1 N008 N011 100\u00b5 Ipk=0.62 Rser=0.559 Rpar=94050 Cpar=2.707p mfg=\"Bourns, Inc.\" pn=\"SDE0604A-101K\"\nR2 N011 VP 2.2K\nA1 N001 0 N003 0 0 0 N002 0 DFLOP Vhigh=5 td=10n\nA2 N002 0 N003 0 0 N001 0 0 DFLOP Vhigh=5 td=10n\nXU3 N005 N009 VP VM I AD712\nV3 N004 0 15 Rser=0.01\nC3 N008 N007 0.1p\nV4 N007 0 SINE(0 3 14000000 0 0 0) Rser=0.01\nV5 0 N012 15 Rser=0.01\nV6 N003 0 PULSE(0 5 0 1n 1n 4n 8n)\nC5 N005 0 47\u00b5 V=50 Irms=1.49 Rser=0.044 Lser=0\nC6 N009 0 47\u00b5 V=50 Irms=1.49 Rser=0.044 Lser=0\nC7 N006 0 47\u00b5 V=50 Irms=1.49 Rser=0.044 Lser=0\nC8 N009 0 47\u00b5 V=50 Irms=1.49 Rser=0.044 Lser=0\nR5 I N009 3.3K\nC9 I N009 .01p\nXU2 N006 N009 VP VM Q AD712\nR6 Q N009 3.3K\nC10 Q N009 .01p\nV11 VP 0 5 Rser=0.01\nV1 VM 0 -5 Rser=0.01\n* TAYLOE DEMODULATOR\n* N9SGG -2025\n.tran 0.5\n.lib ADG1209.sub\n.lib ADI1.lib\n.backanno\n.end\n\n<strong>The trick was finding out about the DFLOP parameters. Vhigh=5 and td=10n, so we get 5V out of the dflop and it has a time delay of 10n seconds.<\/strong><\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p>Next is the PCB layout for the receiver. Using KiCad was a bit of a learning curve but well worth it IMHO.<\/p>\n\n\n\n<p>Next in the series is the Tayloe Modulator article. Stay tuned for more!<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This article is the first in a series, documenting my journey building a Tayloe Demodulator as an HF radio receiver. This article focuses on a Spice simulation of a Tayloe demodulator. The schematic shown in Figure 1 was created with LTSpice, a well know Spice circuit simulator and schematic capture application. I recommend it. Simulation&#8230;<\/p>\n","protected":false},"author":1,"featured_media":297,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-282","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-n9sgg"],"_links":{"self":[{"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/posts\/282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/comments?post=282"}],"version-history":[{"count":14,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/posts\/282\/revisions"}],"predecessor-version":[{"id":397,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/posts\/282\/revisions\/397"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/media\/297"}],"wp:attachment":[{"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/media?parent=282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/categories?post=282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/tags?post=282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}