{"id":11376,"date":"2022-10-27T14:08:54","date_gmt":"2022-10-27T12:08:54","guid":{"rendered":"https:\/\/www.upm.es\/recursosidi\/offers-resources\/sin categor\u00eda\/escam-an-alternative-to-mechanical-scanning\/"},"modified":"2022-10-27T14:08:56","modified_gmt":"2022-10-27T12:08:56","slug":"escam-an-alternative-to-mechanical-scanning","status":"publish","type":"product","link":"https:\/\/www.upm.es\/recursosidi\/en\/offers-resources\/technological-solutions\/escam-an-alternative-to-mechanical-scanning\/","title":{"rendered":"ESCAM. An alternative to mechanical scanning."},"content":{"rendered":"

Brief description of the technology solution and the added value it provides <\/strong><\/h4>\n

ESCAM (Electronic Scanning Antenna for Millimeter-wave applications) is a low-cost solution for electronic beam scanning  at frequencies above 100 GHz is desirable, as an alternative to mechanical scanning, for certain applications in communications, radar, image reconstruction for security and scientific missions in space.<\/p>\n

This invention provides a technological solution for low-cost and reliable antennas based on liquid crystals to provide electronic beam scanning in mm-wave and Terahertz ranges. The invention improves the antenna performance by using  multi-resonant cells in one or two layers of liquid crystal. At present, there is  not any available technology that provides electronic beam scanning at frequencies  around 100 GHz and above. The main advantages of the new technology with respect to mechanical scanning using motors are: low-cost, higher reliability and low power consumption.<\/p>\n

Description of the technological base<\/strong><\/h4>\n


\"reflectarray,<\/span><\/p>\n

Electronic beam scanning  would be desirable  at frequencies above 100 GHz for certain applications. Prior demonstrators of beam scanning antennas based on liquid crystals used a single resonant patch above a layer of liquid crystal (LC) as phasing cells. This configuration  showed  significant limitations in bandwidth, range of phase and losses, which made them unsuitable for practical applications.<\/p>\n

ESCAM solves the problems mentioned above, by using  multi-resonant cells, which provide an improvement in range of phase, bandwidth and losses.  The multiple resonances can be implemented in each phasing cell by using 3 parallel dipoles, where the dipole lengths are optimized to improve the bandwidth and phase range. Another alternative is to use two layers of LC for a further improvement of the scanning performance<\/p>\n

.<\/span><\/p>\n

“Development of low-cost antennas based on liquid crystals to provide electronic beam scanning in mm-wave and Terahertz ranges”<\/span><\/strong><\/em><\/p>\n

Market demands<\/strong><\/h4>\n

Space<\/strong><\/p>\n