{"type":"standard","title":"Reflectarray antenna","displaytitle":"Reflectarray antenna","namespace":{"id":0,"text":""},"wikibase_item":"Q96401432","titles":{"canonical":"Reflectarray_antenna","normalized":"Reflectarray antenna","display":"Reflectarray antenna"},"pageid":63547027,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/en/thumb/6/60/Reflectarray.png/330px-Reflectarray.png","width":320,"height":385},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/en/6/60/Reflectarray.png","width":635,"height":763},"lang":"en","dir":"ltr","revision":"1209417156","tid":"88c3d6da-d0fa-11ee-8f3b-ffa7deada66f","timestamp":"2024-02-21T20:48:15Z","description":"Beam focusing, typically horn-fed planar array of unit cells","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Reflectarray_antenna","revisions":"https://en.wikipedia.org/wiki/Reflectarray_antenna?action=history","edit":"https://en.wikipedia.org/wiki/Reflectarray_antenna?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Reflectarray_antenna"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Reflectarray_antenna","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Reflectarray_antenna","edit":"https://en.m.wikipedia.org/wiki/Reflectarray_antenna?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Reflectarray_antenna"}},"extract":"A reflectarray antenna consists of an array of unit cells, illuminated by a feeding antenna. The feeding antenna is usually a horn.\nThe unit cells are usually backed by a ground plane, and the incident wave reflects off them towards the direction of the beam, but each cell adds a different phase delay to the reflected signal.\nA phase distribution of concentric rings is applied to focus the wavefronts from the feeding antenna into a plane wave .\nA progressive phase shift can be applied to the unit cells to steer the beam direction. It is common to offset the feeding antenna to prevent blockage of the beam.\nIn this case, the phase distribution on the reflectarray surface needs to be altered. A reflectarray focuses a beam in a similar way to a parabolic reflector (dish), but with a much thinner form factor.","extract_html":"
A reflectarray antenna consists of an array of unit cells, illuminated by a feeding antenna. The feeding antenna is usually a horn.\nThe unit cells are usually backed by a ground plane, and the incident wave reflects off them towards the direction of the beam, but each cell adds a different phase delay to the reflected signal.\nA phase distribution of concentric rings is applied to focus the wavefronts from the feeding antenna into a plane wave .\nA progressive phase shift can be applied to the unit cells to steer the beam direction. It is common to offset the feeding antenna to prevent blockage of the beam.\nIn this case, the phase distribution on the reflectarray surface needs to be altered. A reflectarray focuses a beam in a similar way to a parabolic reflector (dish), but with a much thinner form factor.
"}{"type":"standard","title":"Adhyapak Abdul Majid College","displaytitle":"Adhyapak Abdul Majid College","namespace":{"id":0,"text":""},"wikibase_item":"Q4682565","titles":{"canonical":"Adhyapak_Abdul_Majid_College","normalized":"Adhyapak Abdul Majid College","display":"Adhyapak Abdul Majid College"},"pageid":21327951,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/7/7f/Adhyapak_Abdul_Majid_College.jpg","width":225,"height":225},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/7/7f/Adhyapak_Abdul_Majid_College.jpg","width":225,"height":225},"lang":"en","dir":"ltr","revision":"1273167535","tid":"7199b8a5-e046-11ef-8759-c3c11a993f61","timestamp":"2025-02-01T02:44:23Z","description":"Private college","description_source":"local","coordinates":{"lat":23.7176,"lon":90.883},"content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Adhyapak_Abdul_Majid_College","revisions":"https://en.wikipedia.org/wiki/Adhyapak_Abdul_Majid_College?action=history","edit":"https://en.wikipedia.org/wiki/Adhyapak_Abdul_Majid_College?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Adhyapak_Abdul_Majid_College"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Adhyapak_Abdul_Majid_College","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Adhyapak_Abdul_Majid_College","edit":"https://en.m.wikipedia.org/wiki/Adhyapak_Abdul_Majid_College?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Adhyapak_Abdul_Majid_College"}},"extract":"Adhyapak Abdul Majid College in Ramchandrapur, Muradnagar Upazila, Comilla, is a college in Bangladesh.","extract_html":"
Adhyapak Abdul Majid College in Ramchandrapur, Muradnagar Upazila, Comilla, is a college in Bangladesh.
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