History of changes to: Variable Dielectric Delay Lines in Liquid Crystals for Phased Array Feeds
Date Action Change(s) User
Nov. 27, 2023, 2:12 p.m. Added 35 {"external_links": []}
Nov. 20, 2023, 2:02 p.m. Added 35 {"external_links": []}
Nov. 13, 2023, 1:33 p.m. Added 35 {"external_links": []}
Nov. 6, 2023, 1:31 p.m. Added 35 {"external_links": []}
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Aug. 7, 2023, 1:31 p.m. Added 35 {"external_links": []}
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July 10, 2023, 1:26 p.m. Added 35 {"external_links": []}
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Jan. 28, 2023, 11:08 a.m. Created 43 [{"model": "core.projectfund", "pk": 26828, "fields": {"project": 4020, "organisation": 21, "amount": 352305, "start_date": "2013-03-01", "end_date": "2015-08-30", "raw_data": 42592}}]
Jan. 28, 2023, 10:52 a.m. Added 35 {"external_links": []}
April 11, 2022, 3:46 a.m. Created 43 [{"model": "core.projectfund", "pk": 18935, "fields": {"project": 4020, "organisation": 21, "amount": 352305, "start_date": "2013-03-01", "end_date": "2015-08-30", "raw_data": 18891}}]
April 11, 2022, 3:46 a.m. Created 41 [{"model": "core.projectorganisation", "pk": 72386, "fields": {"project": 4020, "organisation": 5488, "role": "PP_ORG"}}]
April 11, 2022, 3:46 a.m. Created 41 [{"model": "core.projectorganisation", "pk": 72385, "fields": {"project": 4020, "organisation": 5489, "role": "COLLAB_ORG"}}]
April 11, 2022, 3:46 a.m. Created 41 [{"model": "core.projectorganisation", "pk": 72384, "fields": {"project": 4020, "organisation": 106, "role": "COLLAB_ORG"}}]
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April 11, 2022, 3:46 a.m. Created 41 [{"model": "core.projectorganisation", "pk": 72382, "fields": {"project": 4020, "organisation": 2207, "role": "LEAD_ORG"}}]
April 11, 2022, 3:46 a.m. Created 40 [{"model": "core.projectperson", "pk": 44505, "fields": {"project": 4020, "person": 5885, "role": "RESEARCH_COI_PER"}}]
April 11, 2022, 3:46 a.m. Created 40 [{"model": "core.projectperson", "pk": 44504, "fields": {"project": 4020, "person": 5886, "role": "RESEARCH_PER"}}]
April 11, 2022, 3:46 a.m. Created 40 [{"model": "core.projectperson", "pk": 44503, "fields": {"project": 4020, "person": 5887, "role": "COI_PER"}}]
April 11, 2022, 3:46 a.m. Created 40 [{"model": "core.projectperson", "pk": 44502, "fields": {"project": 4020, "person": 5888, "role": "COI_PER"}}]
April 11, 2022, 3:46 a.m. Created 40 [{"model": "core.projectperson", "pk": 44501, "fields": {"project": 4020, "person": 5889, "role": "PI_PER"}}]
April 11, 2022, 1:47 a.m. Updated 35 {"title": ["", "Variable Dielectric Delay Lines in Liquid Crystals for Phased Array Feeds"], "description": ["", "\nIn this project we seek to exploit a novel liquid crystal technology, which\nallows a controllable true time delay to be applied to an RF signal of\nfrequencies up to tens of Giga-Hertz. The basic technology has already been\ndemonstrated and has a wide variety of applications. We now intend to use this\ntechnology to construct a real astronomical demonstration system for delay\nlines and show that these can be integrated into the beam-forming module of an\nexisting Phased Array Feed (PAF) instrument, dramatically improving its\ncapabilities. \n\nPAFs are an essential next step for radio astronomy. They offer the\npossibility of increasing a telescope's Field-of-View (FoV), of\nimproved calibration and of allowing operation up to higher\nfrequency. PAFs have been implemented in instruments such as PHAROS\nand can achieve these goals, but over a narrow bandwidth due to the\nuse of phase shifters in the beam-former hardware. In this project we\nseek to implement a true time delay beam-former, which will allow the\nwhole available bandwidth to be used. This will make use of novel\ntechnology - liquid crystal stripline whose dielectric constant can\nbe varied by application of an AC voltage. We propose a two year\nprogramme during which we will produce a PAF module using a set of\ntrue-time delay units that will be tested within the PHAROS receiver,\nwhich is available for use on this project and will make an ideal\ntest-bed. Our focus is on demonstrating the Technology Readiness Level\nof these delay lines in the context of a prototype instrument, thereby\naddressing integration issues as well as pure technology development.\n\n"], "extra_text": ["", "\n\nPotential Impact:\nBelow is a summary of beneficiaries of the proposed research; this is explored in more detail in the Pathways to Impact document. The main beneficiaries are:\n\n- Business/Industry:\n\nThe most exciting areas for impact actually lie outside astronomy and this project should be seen as the first step towards realising the potential for LC delay lines operating at higher frequencies and wider bandwidths with a wide variety of applications. The technology has many attractive features: liquid crystal devices are a fundamentally low cost technology with well known manufacturing techniques for volume commercial applications; devices are low power and operate at short wavelengths with the result that components are physically small and hence cheap; at RF-frequencies beyond the capabilities of silicon devices liquid crystal offers an attractive alternative to implementing delays compared with expensive chips developed from e.g. GaAs. Possible future applications include: anti-collision radar; autonomous automobile driving; high frequency telecommunications; medical imaging technologies; security scanners.\n\nThere will also be a direct benefit to industry through the development and production of the hardware for the astronomical instruments we envisage being enabled by this project, in terms of financial return, valuable knowledge exchange and IP production. \n \n- Academic: \n\nThe areas that will benefit from this project are: radio astronomy technology development and enabling of future experiments; electrical engineering; communication engineering; antennas and propagation engineering. (See Academic Beneficiaries for further details).\n\n- General Public:\n\nThe new experimental areas that will be opened up by this project include the deeper understanding of structure formation in the Universe, which has been proven to be of great interest to the General Public as a whole.\n\n- Schools: \n\nAstronomy outreach inspires school age students and so enthuses them to become the next generation of scientists and engineers.\n\n\n"], "status": ["", "Closed"]}
April 11, 2022, 1:47 a.m. Added 35 {"external_links": [15386]}
April 11, 2022, 1:47 a.m. Created 35 [{"model": "core.project", "pk": 4020, "fields": {"owner": null, "is_locked": false, "coped_id": "5e1c854a-9f3d-4c56-aa75-763661c438a8", "title": "", "description": "", "extra_text": "", "status": "", "start": null, "end": null, "raw_data": 18876, "created": "2022-04-11T01:37:45.661Z", "modified": "2022-04-11T01:37:45.661Z", "external_links": []}}]