1mm dual pol receivers
8
circular polarizer orthomode transducer SIS mixers – use ALMA band 6 devices purchased from UVa WBA13 I.F. amplifiers (1- 9 GHz) from Sandy Weinreb, Caltech 1mm dual pol receivers
description
1mm dual pol receivers. SIS mixers – use ALMA band 6 devices purchased from UVa. orthomode transducer. circular polarizer. WBA13 I.F . amplifiers (1-9 GHz) from Sandy Weinreb , Caltech. turnstile junction OMT. Navarrini & Plambeck 2006, IEEE-MTT, 54, 272-277. - PowerPoint PPT Presentation
Transcript of 1mm dual pol receivers
![Page 1: 1mm dual pol receivers](https://reader031.fdocuments.net/reader031/viewer/2022012917/5681672f550346895ddbd4e9/html5/thumbnails/1.jpg)
circular polarizer
orthomode transducer
SIS mixers – use ALMA band 6 devices purchased from UVa
WBA13 I.F. amplifiers (1-9 GHz)from Sandy Weinreb, Caltech
1mm dual pol receivers
![Page 2: 1mm dual pol receivers](https://reader031.fdocuments.net/reader031/viewer/2022012917/5681672f550346895ddbd4e9/html5/thumbnails/2.jpg)
turnstile junction OMT
Navarrini & Plambeck 2006, IEEE-MTT, 54, 272-277
![Page 3: 1mm dual pol receivers](https://reader031.fdocuments.net/reader031/viewer/2022012917/5681672f550346895ddbd4e9/html5/thumbnails/3.jpg)
waveguide circular polarizer
λ/2 retarder at 15° λ/4 retarder
at 74.5°
![Page 4: 1mm dual pol receivers](https://reader031.fdocuments.net/reader031/viewer/2022012917/5681672f550346895ddbd4e9/html5/thumbnails/4.jpg)
X, Y converted to R ,L
![Page 5: 1mm dual pol receivers](https://reader031.fdocuments.net/reader031/viewer/2022012917/5681672f550346895ddbd4e9/html5/thumbnails/5.jpg)
leakage for 1, 2, 3 section polarizers
![Page 6: 1mm dual pol receivers](https://reader031.fdocuments.net/reader031/viewer/2022012917/5681672f550346895ddbd4e9/html5/thumbnails/6.jpg)
leakages computed with random machining errors (±0.0003’’, ±0.2°)
2-sections 3-sections
![Page 7: 1mm dual pol receivers](https://reader031.fdocuments.net/reader031/viewer/2022012917/5681672f550346895ddbd4e9/html5/thumbnails/7.jpg)
![Page 8: 1mm dual pol receivers](https://reader031.fdocuments.net/reader031/viewer/2022012917/5681672f550346895ddbd4e9/html5/thumbnails/8.jpg)
student involvement
• Dustin Madison (Berkeley undergrad, B.S. Physics 2007, now a grad student at Cornell) – SIS mixer tests and much more
• Chat Hull (current Astronomy grad student) – OMT tests; commissioning, dust polarization in star formation regions