Abstract
This study fabricated and verified a germanium (Ge) fin field-effect transistor (FinFET) on developed GeSOI platform. The Ge FinFETs were demonstrated for radio-frequency (RF) applications with a harmonic radar tag. The relation between the detection range (Rd), received power (Pr), and threshold voltage (Vth) of a diode was qualitatively discussed. To meet the requirement of a low Vth, two kinds of Ge FinFETs with different metal gates were fabricated and compared. After the evaluation of electrical characteristics of n-type and p-type Ge FinFETs with different fin numbers, a tag for harmonic radar was designed by integrating diode-connected TiN gate 1-fin Ge FinFETs (Vth = 0.1 V) with a high impedance antenna. The RF performance was evaluated at 9.4 GHz and 18.8 GHz. The results indicated a 50 % improvement in the Rd as compared to the tag using a commercial Schottky diode. Therefore, the proposed low-Vth Ge FinFET on developed GeSOI platform for complementary metal–oxide–semiconductor (CMOS) is promising for high-sensitivity harmonic radar applications.
Original language | English |
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Pages (from-to) | 1798-1801 |
Number of pages | 4 |
Journal | Ieee Electron Device Letters |
Volume | 43 |
Issue number | 11 |
DOIs | |
State | Published - 1 Nov 2022 |
Keywords
- CMOS
- Ge FinFET
- harmonic radar
- tag