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Antenna sensitivity variation depending on the installation of a shield can
Author(s) -
Park Donghee,
Jeon Jihwan,
Kim Hyeongdong
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32291
Subject(s) - shield , antenna (radio) , sensitivity (control systems) , electromagnetic interference , emi , printed circuit board , spurious relationship , noise (video) , electrical engineering , coupling (piping) , antenna noise temperature , engineering , interference (communication) , electromagnetic compatibility , electromagnetic shielding , electronic engineering , acoustics , antenna factor , antenna measurement , computer science , physics , geology , mechanical engineering , petrology , channel (broadcasting) , machine learning , artificial intelligence , image (mathematics)
This letter investigates antenna sensitivity with various installations of a shield can. A commonly used shield can, which is widely used to mitigate electromagnetic interference (EMI) in electronic devices, will produce a spurious resonance by the gap between the shield can and the ground when the shield can is mounted on a printed circuit board (PCB) with only a few soldering points. A noise source is simulated as a loop‐type circuit on the ground to model the digital noise produced in an actual device. The installation methods of the shield can is discussed to verify the performance of the antenna sensitivity. In the analysis, the spurious resonance from the shield can is an important factor to the coupling between the antenna and the noise source. A high sensitivity antenna can be achieved by modifying the installation of the shield can. The measurement of a commercial WiFi module is also conducted to demonstrate experimental antenna sensitivity.