Michael Gutierrez Project Mentor: Vikram Ravi


June 17, 2024 (Day 0)

Understand the goal: block diagram

<aside> 💡 16 antennas

400-500MHz (?)

LNA - part number? — what’s the impedance match

long coax — do we need more gain for this?

more gain after coax, plus maybe bandpass

then digitizers — 6 snap boards with DSA110 firmware

40Gb converge to 1 server for beamforming — maybe direct connect instead of using a switch

parameters: Aeff, BW (after rfi), Tsys (→SEFD=2kTsys/Aeff), beam shape (solid angle, func of freq)

</aside>

design the antennas first cause longest lead time to build

probably get an off the shelf lna and impedance match

Start with LWA antenna design, compare to dipole of appropriate frequency (use 500MHz)

HFSS or CST software - ask saren or kiran

⇒ Saren recommends CST for easier learning curve, I need a windows machine to run it on, will probably use the beefy one in the shed on Moore Roof and remote desktop in

3DS login info from Saren doesn’t work anymore… need to ask Kiran about new licenses.

vikram will add me to radio slack ✅

check out the LWA memo series

LWA memo series: https://leo.phys.unm.edu/~lwa/memos/index.html

Basics of the antenna design are here: https://leo.phys.unm.edu/~lwa/memos/memo/lwa0188.pdf

ovro trip wed-thurs?

ask stephanie about if i can drive the cars

need to do RFI measurement asap

<aside> 💡 rough numbers — sensitivity

beam solid angle of around pi

→ Aeff~lambda^2/beam ~ 4lambda^2/pi for 500MHz ~ 0.1m^2 times 16 antennas

Tsys ideally around 100K (worst, including everything)

→SEFD = 2polarizations1.4e-23Tsys/(16antennas*.1) ~ 150kJy

can detect sun, and crab giant pulses (microsecond), and pulsars (.2Jy)

sensitivity in a millisecond = 150k/sqrt(10^82polarizations10^3) ~ 300Jy

</aside>

next go out with the antenna and measure properties/calibrate Tsys with the sky

stretch goal: interferometry between elements to model mutual coupling (which will modify the impedance match?)

timeline: settle on parts next two weeks

to get parts ordered: ping stephanie on slack — moffett PTA

ask saren about spectrum analyzer friend ⇒ Saren’s rec: SSA3021X Plus ORDERED!

From Saren: keysight presentation on spectrum analyzers

RFB1_4.pdf

Ay122b peryton detector:

https://viewer.diagrams.net/?border=0&tags={}&target=blank&highlight=0000ff&layers=1&nav=1&title=122b_peryton_detector.drawio#R7V1bc6M4Fv4t%2B5Cq3QdTkkBcHnPp7lRtejZVmZ3p2ZcUsbHNBBsPxp1kfv1KgDDogkm4OTapSmILIWOd71x0LtKFfr16%2FRa5m%2BX3cOYFFwjMXi%2F0mwuEbBORv7ThLW3ACKcNi8ifpU1g3%2FDg%2F%2B2ljZC17vyZt83a0qY4DIPY35Qbp%2BF67U3jUpsbReFLuds8DGalho278ISGh6kbiK2%2F%2B7N4mX0tDPbtt56%2FWLJPhiC7snJZ56xhu3Rn4UuhSf9yoV9HYRinr1av115A5648L18VV%2FMHi7x1XOcG58%2B75%2BurJ6j%2F9f3bj4fXXy7D22hiZQ%2F30w122Te%2BQGZABryah2Rc8tjxWzYX5l%2B7kF2YbBNKXZIOeENofbW%2FTF4t6P%2B7%2F1zQJ7qyZlcrNiZ5unTYtEs2MfknoNh7pe3LeBWQBkheuoG%2FWJPXU%2FItvYg0%2FPSi2Cf0ucwurPzZjN5%2BFXnkmdynZChA3m9Cfx0n1MdXF%2FiGjrWLw%2FS5k6G3cRQ%2Be9dhEJJxb9bhmo4y94OAa8pmiHyu96qce5hTlHCCF668OHojXbIbdMdOb8m4AOrZ%2B5c9poyMU5YFOCEzQ3KG4kU%2B8p7Q5EVG63fQ3bRGuvdAdwMYJbpbpuY4YP8Dh0UBQ2EDFOgKFPzqeXWJTwTjhr6MPTrrL0s%2F9h427pQ2vRCdUsZFolhs%2BuIte9EN5ZDOcSxTSAVaIUdCK70jWmGopNVGSqjAX3sT9miUVIlqwlJqvZfqhoLqt%2Fdf6QdBqh6JnqZSAtBPBd9v%2F1bCIW%2FenJ180BmqmHywNN0ScGYCEWcMDu3jzBhxdno4A5izPywND4szQ42zphYIG8el3yXy5qUxlnFMlw6X9OnR15eXF23lr%2F2pH013frzVpuGKImQ235J%2F%2F%2Ft69evE%2FEaMGY20iB%2BUX8%2Bh5UrgdpaWD9L1EuIcR4OizavLNGhX1o5MgXLUYFN95z55wT2ZutgP6ZQ%2FhXFMgEFmkC3i6HzP3O3Sm2VvBLIVSMpTMA436ViJ3bN6XdCls%2BYFZAEb0X5a5M78UHO9yHeDx8mjS4Zcr91H1A5tsFUijSFaNpaELvnKtn1RoAuE8GZkFZ69DaN4GS7CtRt82bdeReFuPctnf9%2FnLqSTm0z7n14cv2UuBcoJZaJ4r378o%2FD6j2wo%2BvrmtfjmrfDmntCEfGtK4bRtTWbgR%2FFNMo6G2dv9UMm7fKz17JK6J%2FZMR1q%2B%2BnTikuvpjNBpqCYymbVwF029iunNYB670cKLK%2FpZctBEXuDG%2Fs%2Fyc7SOAXSYOVPpxbwwsExNnpnmQfgyXbpRrLnrdRi7lJET%2FmF8GnjzxHrhOD1KAZ%2FKUi%2F68tNLRSpsh%2FUc8%2BCqwoAi75ldsZ4uTPt9SG%2BCwuyfqqKCAHEmuEARLLGL9K4oYiooIvLDuVAEMh%2FyUCRhFskR6KdUr3xMQ8GShjqgn1rUPxDXVEDQHFQDiS7R%2Fz6IBjudksQ87I71lDyUBTmymy%2Fy0EKRKhUIVnLcBGgAmGWrMPvI2nOfDX5Pv02hSzifbwnReeLkz9BAdeEhuRI05Mqi6LxA%2Bnw%2BR9OpIGfJlZn5ZGKzC45swGgcsdmaD2mo7GcggjpvYuOkYiC7tQNYiAq0Lb%2FCl3jpRWuK5npr%2Bx5ERWK%2BXrnT50WC7LrK%2BMOCRFcgZy9IoG3CEgYmDSVJ%2BcmzQTkve3dShimvyoXJsxdPlxmN3O0mjUPP%2FVcqaKQrCbUbobikkZlc%2FHpFAJHSdSF3Qghg5AQTANC2byQLLPfvXeRpWy%2F6mdxWhuYVwdM1FYvkb%2F5LAIuu6TUNwOSKBvQDHRxL0UEv3ym5CBUXccWNuOI%2B06q4MbmoutOxD3xb1kHxbaF8LqtNhXd4g8ohSgRFa9uRWNvMXGrfTScLTUtdAQWYmslPmX9US3vOA7DduFN%2FvbhL3t1AXMme4S6m8Y7rPNsESFgjIvJYW3hrL3IDDe4e6ftHJadosApZsApZn4kL7KpntaXP2hbCOctWx6IjGspiHxB3BHEkul0EiFOFvmmkwA%2BtssuuKGQaIt%2Bb4qR0tsqGMsONmxR%2FlaRrSZRswbwmn%2BVvtl7B4q60vqgJl5n7ECn1JO1VkDe6aUDDqRQV2bPe%2BKsFmY%2FAfyJ%2Fp7vVLtjR0FIqDh6fCL0eyVMSQbH9uagL9wpQifRmiXe1qIu6oi4jZoG6Nw%2FU2L4OwumzQOgmvi1ZBkl53df%2BJLMVkDDJMrnSnaNKFlOVyhWp7y6kmjB%2BOzRJLcgeA2lcRhwDY9HH52gAiclSpZlEmm4VuoCuJHYNm%2BRYYodBuPCnjws39rba024%2B96LaYcMKUCnlCk8BQxQ0WEa5ztSIOk%2BKWHpr6fp%2FmvIBFUfR4umf1AAhL9m%2FfyXTBxInwdxd%2BcFb2vXWC356lDaF69nY9PI6jFZuULj20418l%2FwnhHRjsnjaHug3dTeqLi%2BFdBsDpNwKAi8m6Jlk9qx4Zxhtlu46GzLFBKBydpLBjzbnCGTXfCI219kngcwvkl6JIzLYnIzPPilzOVDKJ2nXhY95CaNZ%2BcHysch3eXr2yXB0zNSun2TYKfVLpHoyRj6%2FmWxnDzTzpmGUBPom8dKfPq%2B9bfYU%2FpowI5sGvm%2BBZJX9CiAp9ZsHoRvzczDzt5vAfWPd6ZqBvPiHv9qEUeyuY6l%2Fqa3sqLtf6NULdKWDmToRJW9O2aI6P%2BVAVmb70iW3UjXOoyhLkNNlxjvULKMrPVvDKdS5%2Fa5z%2Fnos2u91NGhX4RRZavG5aEyFk7QcWRlMQYqW%2BKggRwU5KsgjVZDVERdm7iplC5LoRmTkWrR93WgLU9RnWFazWCz2j8IlRVw2z92jrst3JEck7%2FiIbvq124nPZovhwxkTTXP2FIFcgDVo7n8sLkRA7Iqeo7qs1KagtGCa7A9ogrcMcZ8vScOu5HSapGE4ZUo0ja32kKUBpMTpTRxAqyAOmqT30nhKQUTAoUWEVVdENM31aJZfKnpjDPDt6TQYVgfyqS0kQzioGYOyofhQVIcMK8amHn65vFfZPSeXfeqU61Z0jCSVUrIFW3dVuqJX%2FyENJg9Kk2JEbObN3V2Q59OLCUn7Di2QiOUDV2QsYL1HAmHRtTFUJmJRwSGnqOGMgxquZAHXKGDpVsGx%2BuuDCg4rpHBTG9g0NceCtg4cGzsQG1zlhm5rDtYBhqahEzFv2L3aw8agkHtXSrocXxXoMnpAV13rSVfY5P1YT8aga%2BnPT%2BW6IsQY1EY2xLWtQPauowl5Ol9FNEFWmKYbWlchd0MWZPlsm5PUsnYqUKHO2iyTC0qM1F63JzGap92rvLXtlfP%2FsPEEom%2BTB3VFf7HLedb1fwSNrHy3KC16tcDV25jV3LQkkZnVm5Y0xt9vt18nENhAiT6eY9hueKwfLN4i%2BVbqEZWRvZo8WHh0ZWDkUBhFxkPqrVg%2BWO098yOiCR9nbuwq5HUtJji0bQ8vfsUyblmFKuwqpotlCcUj%2Fkf8d4X%2F8rZV0AIa1AdmgeMpBy2ulJCtOaUf8%2BJdThmtXLWtWfrQjhlmlx92zChSuxo6ZnTgaABDZKP0LxcAdxzNgQZGTva3PHzHbhlco4bhBLKeDkgHq%2ByfhQBrjA7FpD1J%2BQG01WhoJh2a73Sp3m3sClWlkXyGhUGU7ZBTkhYNQVBWEYr9v%2FpcJLC65PNmTtPhMmqhiTVbzBvqlT1ZRGdkz77Y07R4GGCJiO6VPdVrmBY8PyaY%2FEY%2FoebK46PrhMIHvWtB8BlQ2A3smLFQhJ3dJ%2BzU%2B5COsDsV2HHGCNyXlQwGuxolJB%2Fc0qOWnyCM2plaA5bzZSBAh7a4Z1Wq5YzkruZZHZdo6hNqT0x8%2FT5Byf7Vyn2G8w4H%2FEl1UtVPjr0NbisDmTXb50bDZhu1T8fA24ALCku2iOiXmWWR8pGZT4yZOV1tIE2iRHplaEvcDnewPByrbiLOPoPvKPLV65a0mINmXFniaoCeZyQh%2FqfLVreq%2BW4CNEfnMmtb2rqvt8362FryGPgUnTqftrKH6GUUuW%2BFDhkjKKFkMLnPcr8tXATSwf4wS0tR9ucTq8r9yYv0iduFrej5Ohmhgw4KHcMqryBRKzJHLsh6EEHiuh6i3wRifjC6vyVsGSfHGHQU2c8LJyrLX%2FTcfdLLjgXWoPuv71OfG5cQHpWkt%2BrG8RtnR39I0iOzvEEYCz6pJDcyrKr%2BHUlua0TmgMhsXJ3RDjIP2BRN%2B8OsQEDZn5PZXP%2BOkF%2FDxyXb%2BfpYAuwrfzslX9Nde%2BFuqz25dGeYt4fYnT635MbgtlWGwJQlwRgS9xnszI2hdp81jbJfkvlb79w4jEgn%2FZOH21shP79xmQ214jaJEpdWr0XFtjpj%2FmhcqVe%2FTx7037HSk7q%2FPjpSZRA0eQhKds7r043K4jKjzqipM8yBFYaNRoUxmMKAhq7Rs5TzHzSwxlDnZ40a40QwyGsMspQYPPhm19jU%2FFg0RDFtNwhfNu52%2B0hoxXaMbEwhDAQK0XWFVSwwEakl8dVBK6dr%2BwRrXrit0hp3ybnvN9cTw6o86v1cGNbBHBwsrBlimj2WnfTQGb8ergRvr67P%2FZjaaZrWaeG7e4rBykryUqcD%2BuYs4YuBZJFsVAsz5uXtBcqObJF8tqqHTwazNMcukEpS3dOz4nHURz%2BMiqdlxcPvhmVqhsisveodttXiqHdGvXNIlHE1wwYiVlOlKOtX7dQ4Hu4Y1U6rhYoYC4WKwNFKxoFE4%2FRZtOjIFqZj0WJ3RYsYC9VjSbWJCIM%2B6xadNip5Pj%2B38taho7Fk0sH4s7uTwEf%2BlIOAryxH0sryXrlTdnLfWN55PDDsAneWfEeDPus7HfWGIyPuTgZ3gj0CDU0H1d74XlFYY2vZc464m4B3oNNFxtB5WhCok3PGuHu7PGyysDrzQBtHlaYFgdqnOUbdTwSB3EnY4l6ivcbbIeOIUWnUVhqSTWx61hjq5JxRY3SrMaBhHlWeFgRqv%2BSoMk4EglyFCB5%2BjwQIRj8oPTQIHnnUAoLRLdqvW9SURLKGD1tAIPOMnh2%2Fsl0vjyhuAcG4WXHfHMpHr4YPXBC9oUTB6EE%2BBhx2AbwjiFzkh5mMwDtl4Ak2yZGFLiAcqwUrSWgBMfoEho9dsMN4R09U50xsMU8Pi13g44pdwLFi8NQRyB0E5QzthII1igVHpVE2OcWDu3rWGN3VC44ao1pjQMM6rtgFVDsnR5VxGhDkzw7E%2BvCxC%2FhJfaFLMjmtV%2FpZwmkZumxZIdv5nVl8HVBI7ROtKxhUSuI2qe0jkm6iEwlYru47TxbFZQAcXleY%2FSqJT3AMwMPt%2FSQ5AFWhJPbXRyUhQSC3EblsXdFnRR5En7QSvCMFIQS5LTGq3a9%2BQDJv4agfOtIPAv2TfYIq1xH9qgjGnqOKOFkQmrpwgiWWriT6VRQ1arfP2QFlQ0OIWkiXF%2F36oJA6Z3L0QbXLuDYL7LHVhX1cUQukdkcejeoYXVDNEFjOumAbOQzmfmInZxzDuUW1jy0yrYsjOjMAMuocPDQgJb4IjoYHztgO1kwHm5hGVBzuVFTkOJqFDFO3TCL%2BMAMcGz195mzAPZjeezCBw9IUmWbNvoXq4AC%2BvwGqj9iAFm7UX7d6OEwpB8JogSmkn7h6hwfP7O3ZGlNv2jBaYy3rQu6wEdsqW2NicLhna6y533%2B0xo4bgVY5Ju2IkOvXGkPNj0lRQe7h8vs9uXx99%2B9zlzuJs6bs5NcNyUlzvaac6lCY%2F2O1w6uP87L147LNQa%2B2%2BbvtZsjZzXb1oaJ8f905cKAXd6Q1178jO1hXu8CbirHLG%2FJM9EuduQyzy6s81WGZvYqw5hsBVFMdnT3VMY11iQW9fYCAvI1CSpS9pKDLx%2B%2FhjB4L%2FOX%2F


June 18, 2024

Tasks: