Browsing by Author "Meng, Guo-Xuan"

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ESD protection design for fully integrated CMOS RF power amplifiers with waffle-structured SCR
(2008)
Ker, Ming-Dou
;
Lin, Chun-Yu
;
Meng, Guo-Xuan
;
電機學院
;
College of Electrical and Computer Engineering
Waffle-structured SCR (silicon-controlled rectifier) has been studied as an effective on-chip ESD (electrostatic discharge) protection device for CMOS RIF (radio-frequency) circuits. In this work, a novel on-chip ESD protection strategy using the waffle-structured SCR is proposed and co-designed with a CMOS UWB (ultra-wideband) PA (power amplifier). Before ESD stress, the RIF performances of the ESD-protected PA have been demonstrated to be as well as that of the unprotected PA. After ESD stress, the unprotected PA was seriously degraded, whereas the ESD-protected PA was keeping the performances well.
Low-capacitance and fast turn-on SCR for RF ESD protection
(2008-08-01)
Lin, Chun-Yu
;
Ker, Ming-Dou
;
Meng, Guo-Xuan
;
電機學院
;
College of Electrical and Computer Engineering
With the smaller layout area and parasitic capacitance under the same electrostatic discharge (ESD) robustness, silicon-controlled rectifier (SCR) has been used as an effective on-chip ESD protection device in radio-frequency (RF) IC. In this paper, SCR's with the waffle layout structures are studied to minimize the parasitic capacitance and the variation of the parasitic capacitance within ultra-wide band (UWB) frequencies. With the reduced parasitic capacitance and capacitance variation, the degradation on UWB RF circuit performance can be minimized. Besides, the fast turn-on design on the low-capacitance SCR without increasing the I/O loading capacitance is investigated and applied to an UWB RF power amplifier (PA). The PA co-designed with SCR in the waffle layout structure has been fabricated. Before ESD stress, the RF performances of the ESD-protected PA are as well as that of the unprotected PA. After ESD stress, the unprotected PA is seriously degraded, whereas the ESD-protected PA still keeps the performances well.