{"id":1348,"date":"2019-09-26T08:00:02","date_gmt":"2019-09-26T12:00:02","guid":{"rendered":"http:\/\/blog.pasternack.com\/?p=1348"},"modified":"2019-09-04T13:50:18","modified_gmt":"2019-09-04T17:50:18","slug":"rf-test-equipment-series-matrix-switches-and-switch-matrices","status":"publish","type":"post","link":"\/blog\/rf-testing\/rf-test-equipment-series-matrix-switches-and-switch-matrices\/","title":{"rendered":"RF Test Equipment Series: Matrix Switches and Switch Matrices"},"content":{"rendered":"<p>Matrix Switches, or Switch Matrices, are devices that enable the routing of RF signals through selectable paths. These devices can be as simple as single-input with two selectable outputs or as complex as having tens of inputs and outputs that can all be interested as needed. Switch Matrices are often used in test equipment setups that require multiple pieces of test equipment and while testing complex DUTs, such as radios, handsets, amplifiers, etc. Switch Matrices can be controlled my simple analog voltage inputs, mechanical switches, digital inputs, or even with more sophisticated software control.<\/p>\n<p><strong>Important Matrix Switch\/Switch Matrix Performance Parameters<\/strong><\/p>\n<p>\u2022 Insertion Loss<br \/>\n\u2022 Maximum Power Handling<br \/>\n\u2022 Isolation (between input and output channels and from input and outputs)<br \/>\n\u2022 Operating Frequency and Bandwidth<br \/>\n\u2022 Group Delay<br \/>\n\u2022 VSWR at each state<br \/>\n\u2022 Control Signal type and functional parameters<br \/>\n\u2022 Linearity<br \/>\n\u2022 Noise floor<\/p>\n<p><strong>Uses of Switch Matrices\/Matrix Switches<\/strong><\/p>\n<p>\u2022 Allow for various interconnect options from one or more input ports to one or more output ports<br \/>\n\u2022 Enable control (digital, analog, software) of attenuators, phase shifters, delay lines, filters, generators, and receivers<br \/>\n\u2022 Operate as a variable interconnect mechanism between test equipment (network analyzers, spectrum analyzers, signal generators, sources, receivers, and DUTs)<br \/>\n\u2022 Control antenna array behavior, such as beamforming<br \/>\n\u2022 As a fail-safe or backup option for switchable redundancy applications<br \/>\n\u2022 Antenna duplexing<br \/>\n\u2022 As part of a modulation circuit for amplitude modulation (AM), phase modulation (PM), and frequency modulation (FM)<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1353\" src=\"\/blog\/wp-content\/uploads\/2019\/09\/Block_diagram.gif\" alt=\"\" width=\"519\" height=\"512\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Image 1:<\/p>\n<pre>Source: Wikipedia\r\n\r\n<\/pre>\n<p><strong>RF Switch Types<\/strong><\/p>\n<p>\u2022 Single-pole Single-throw (SPST)<br \/>\n\u2022 Double-pole Single-throw (DPST)<br \/>\n\u2022 Single-pole Double-throw (SPDT)<br \/>\n\u2022 Double-pole Double-throw (DPDT)<br \/>\n\u2022 Multi-pole Multi-throw (#P#T)<br \/>\n\u2022 Rotary Transfer Switch<\/p>\n<p>RF Switch Matrices are often sold as stand-alone pieces of test and measurement equipment, integrated into assemblies, or sold as discrete devices built into RF systems. Hence, there are many custom varieties with various interconnect standards and other operational parameters. In the case of Switch Matrices designed as test equipment, they are often shipped with the appropriate coaxial or waveguide connectors for their intended frequency range of operation. As Switch Matrices are used alongside many other forms of test equipment, they require precision interconnect, such as adapters, coaxial cables, waveguide, and often require phase stable and skew matched cable combinations to eliminate the variations between channels.<\/p>\n<p><strong>Useful Matrix Switch and Switch Matrices Accessories and Equipment<\/strong><\/p>\n<p><a href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Calibration+Kits+Portable%5ECalibration+Kits%5ECalibration+Kits+Components&amp;keywords=calibration+ports+vna&amp;sort=y&amp;searchtype=1&amp;view_type=grid\"><span style=\"color: #0000ff;\">\u2022 Pasternack VNA Calibration Kits<\/span><\/a><br \/>\n<span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Calibration+Kits+Portable%5ECalibration+Kits%5ECalibration+Kits+Components&amp;keywords=calibration+ports+vna&amp;sort=y&amp;searchtype=1&amp;view_type=grid\">\u2022 <\/a><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Cable+Assemblies&amp;Rfinca99rfcablegn=PE-VNA-HF%5EPE-VNA-R%5EFlexible+Cable%5EPE-TC110%5EPE-FF430&amp;sort=y&amp;view_type=grid\">Pasternack Phase Stable (VNA) Coaxial Cables<\/a><\/span><br \/>\n<span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Calibration+Kits+Portable%5ECalibration+Kits%5ECalibration+Kits+Components&amp;keywords=calibration+ports+vna&amp;sort=y&amp;searchtype=1&amp;view_type=grid\">\u2022 <\/a><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Cable+Assemblies&amp;Rfinca99rfcablegn=160+Series%5EPE-P141%5EPE-P142LL%5EPE-P300LL%5EPE-P102&amp;sort=y&amp;view_type=grid\">Pasternack Cable Generic Test Cable Assemblies<\/a><\/span><br \/>\n<span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Calibration+Kits+Portable%5ECalibration+Kits%5ECalibration+Kits+Components&amp;keywords=calibration+ports+vna&amp;sort=y&amp;searchtype=1&amp;view_type=grid\">\u2022 <\/a><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Cable+Assemblies&amp;Rfinca99designtype=Skew+Matched+Pair&amp;sort=y&amp;view_type=grid\">Pasternack Skew Matched Pair Coaxial Cable<\/a><\/span><br \/>\n<span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Calibration+Kits+Portable%5ECalibration+Kits%5ECalibration+Kits+Components&amp;keywords=calibration+ports+vna&amp;sort=y&amp;searchtype=1&amp;view_type=grid\">\u2022 <\/a><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Adapters&amp;Rfinad99con1series=1.0mm%5E2.4mm%5E1.85mm%5E2.4mm+NMD%5E2.92mm%5E2.92mm+NMD%5E3.5mm%5E3.5mm+NMD%5E7mm&amp;sort=y&amp;view_type=grid\">Pasternack Precision Coaxial Adapters<\/a><\/span><br \/>\n<span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Calibration+Kits+Portable%5ECalibration+Kits%5ECalibration+Kits+Components&amp;keywords=calibration+ports+vna&amp;sort=y&amp;searchtype=1&amp;view_type=grid\">\u2022 <\/a><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Adapters&amp;sort=y&amp;view_type=grid\">Pasternack In-series and Between-series Adapters<\/a><\/span><br \/>\n<span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Calibration+Kits+Portable%5ECalibration+Kits%5ECalibration+Kits+Components&amp;keywords=calibration+ports+vna&amp;sort=y&amp;searchtype=1&amp;view_type=grid\">\u2022 <\/a><a style=\"color: #0000ff;\" href=\"https:\/\/www.pasternack.com\/nsearch.aspx?Category=Microwave+Probes%5ETools+Miscellaneous&amp;keywords=PE2PB&amp;sort=y&amp;view_type=grid\">Pasternack RF Coaxial Probe<\/a><\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Matrix Switches, or Switch Matrices, are devices that enable the routing of RF signals through selectable paths. These devices can be as simple as single-input with two selectable outputs or as complex as having tens of inputs and outputs that can all be interested as needed. Switch Matrices are often used in test equipment setups ..<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[481],"tags":[521,483,522],"class_list":["post-1348","post","type-post","status-publish","format-standard","hentry","category-rf-testing","tag-matrix-switches","tag-rf-test-equipment","tag-switch-matrices"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>RF Test Equipment Series: Matrix Switches and Switch Matrices - Pasternack Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"\/blog\/rf-testing\/rf-test-equipment-series-matrix-switches-and-switch-matrices\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RF Test Equipment Series: Matrix Switches and Switch Matrices - Pasternack Blog\" \/>\n<meta property=\"og:description\" content=\"Matrix Switches, or Switch Matrices, are devices that enable the routing of RF signals through selectable paths. These devices can be as simple as single-input with two selectable outputs or as complex as having tens of inputs and outputs that can all be interested as needed. 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