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http://dx.doi.org/10.6109/jkiice.2022.26.10.1567

RF protection technique of antenna tuning switch in all-off condition  

Jhon, Heesauk (Department of Electronics, Information and Communication, Mokpo National University)
Lee, Sanghun (Wavepia Inc.)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.26, no.10, 2022 , pp. 1567-1570 More about this Journal
Abstract
This paper, we presents a RF protection technique of antenna switch by improving the power handling capability in worst case environment mode for mobile phone applications without critical payment of circuit performances such as insertion loss, isolation and ACBV (AC breakdown voltage). By applying a additional capacitive path located in front of the antenna in cell-phone, it performs the effective reduction of input power in high voltage standing wave ratio (VSWR) condition. Under the all-path off condition which causes a high VSWR, it achieved 37.7dBm power handling level as high as 5.7dB compared to that of conventional one at 2GHz. In addition, insertion loss and isolation performances were 0.31dB and 42.72dB at 2 GHz, respectively which were almost similar to that of the conventional circuit. The proposed antenna switch was fabricated in 130nm CMOS SOI technology.
Keywords
RF protection; single-pole double throw (SPDT); VSWR(voltage standing ratio); RF switch;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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