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公开(公告)号：US20220229166A1
公开(公告)日：2022-07-21
申请号：US17549643
申请日：2021-12-13
发明人： Tom Heller , Oded Katz , Danny Elad , Benny Sheinman
IPC分类号： G01S13/36 , G01S13/524 , G01S13/931 , H01Q3/26
摘要： An improved circuit configuration is disclosed for calibrating and/or verifying the operation of phase shifters in a phased array radar system. In one illustrative embodiment, a method includes: (i) programming a set of phase shifters to convert a radio frequency signal into a set of channel signals; (ii) splitting off a monitor signal from each channel signal while coupling the set of channel signals to a set of antenna feeds; and (iii) while taking the monitor signals in pairs associated with adjacent channels, measuring a relative phase between each pair of monitor signals.
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公开(公告)号：US20220276363A1
公开(公告)日：2022-09-01
申请号：US17187251
申请日：2021-02-26
发明人： Ross F. JATOU , Danny ELAD , Dan CORCOS
IPC分类号： G01S7/52 , B06B1/04 , G01S15/931
摘要： One illustrative integrated electromagnetic-acoustic sensor includes: a ground plane; a patch antenna above the ground plane to send or receive an electromagnetic (EM) signal having an EM signal frequency; and an array of capacitive micromachined acoustic transducers formed by cavities between the patch antenna and a base electrode to send or receive an acoustic signal having an acoustic signal frequency. One illustrative sensing method includes: driving or sensing a EM signal between a ground plane and a patch antenna; and driving or sensing an acoustic signal between the patch antenna and a base electrode, the base electrode and the patch antenna having an array of capacitive micromachined acoustic transducer cavities therebetween.
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