{"id":2143,"date":"2023-01-19T12:18:24","date_gmt":"2023-01-19T17:18:24","guid":{"rendered":"\/blog\/?p=2143"},"modified":"2023-01-24T12:26:14","modified_gmt":"2023-01-24T17:26:14","slug":"what-is-a-waveguide-magic-tee","status":"publish","type":"post","link":"\/blog\/rf-magic-tee\/what-is-a-waveguide-magic-tee\/","title":{"rendered":"What is a Waveguide Magic Tee?"},"content":{"rendered":"
\"image

RF magic tee<\/p><\/div>\n

A Waveguide Magic Tee<\/a> is a 180-degree hybrid power divider<\/a> with 4 ports made from a single waveguide structure. The Magic Tee has been around for over 70 years and was a product of development during World-War II. The structure of a Magic Tee is a combination of an E-plane waveguide arm meeting a H-plane waveguide arm meeting at a junction with two other perpendicular collinear ports. As a Magic Tee is passive and ideally lossless, this component can be used as a power combiner, divider, or for RF computation.<\/p>\n

It is important to note with Magic Tees that there isn\u2019t a single conventional port allocation, and some vendors or descriptions may dictate different port allocations than the one used in this blog post. Port 1 and Port 2 are designated as the two collinear ports, of which Port 3 is the E-plane port, and Port 4 is the H-plane port.<\/p>\n

The basic function of a Magic Tee can be broken down into three basic cases. In case 1, two signals are injected into port 1 and port 2. In this case, the sum of ports 1 and 2 exits port 4 and the differences exit port 3. Case 2 is where a signal is injected into port 4, and the signal is divided equally between port 1 and port 2, with port 3 with a 0 level output. In case 3, a signal is injected into port 3, where equal in amplitude but opposite in phase signals are incident on port 1 and port 2, with port 4 having zero output. This behavior is why port 4 is often designated as the Sum port and port 3 is designated as the difference port. In some cases, the E-plane port is denoted as port 4, the H-plane port is denoted as port 1, and the collinear ports are denoted as port 2 and port 3, respectively.<\/p>\n

An ideal Magic Tee exhibits no loss and complete isolation between the non-stimulated ports, In the non-ideal cases, there is some loss, reflections, and non-perfect isolation between the ports due to impedance mismatch. As this is the case, the match between the E-plane and H-plane Tees dictates the bandwidth of the Magic tee and the isolation between the colinear ports. Another thing to note is that the E-plane and H-plane ports are perpendicular to the long wall of the waveguide, which results in orthogonal polarization of the E-plane and H-plane ports dominate electric field mode.<\/p>\n

The most significant electric specification parameters for Magic Tees tend to be the frequency range in hertz, the insertion loss in decibels, the isolation between the E-H ports in decibels, and the isolation between the collinear ports in decibels.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

A Waveguide Magic Tee is a 180-degree hybrid power divider with 4 ports made from a single waveguide structure. The Magic Tee has been around for over 70 years and was a product of development during World-War II. The structure of a Magic Tee is a combination of an E-plane waveguide arm meeting a H-plane ..<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[741],"tags":[742,297,743,744],"class_list":["post-2143","post","type-post","status-publish","format-standard","hentry","category-rf-magic-tee","tag-magic-tee","tag-power-divider","tag-rf-magic-tee","tag-rf-power-divider"],"yoast_head":"\nWhat is a Waveguide Magic Tee? - 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-magic-tee\/what-is-a-waveguide-magic-tee\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is a Waveguide Magic Tee? - Pasternack Blog\" \/>\n<meta property=\"og:description\" content=\"A Waveguide Magic Tee is a 180-degree hybrid power divider with 4 ports made from a single waveguide structure. 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