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An InGaAs/InAlAs/InP HEMT with sub-50nm EBL gate has been developed for sub-millimeter wave (SMMW) power amplifier (PA) applications. In this paper, we report the device performance including high drain current, high gain, high breakdown voltage and scalability to large gate periphery, which are essential for achieving high output power at these frequencies. Excellent yield, process uniformity and...
In this paper, we present the latest advancements of short gate length InGaAs/InAlAs/InP high electron mobility transistor (InP HEMT) devices that have achieved extremely high extrapolated Fmax above 1 THz. The high Fmax is validated through the first demonstrations of sub-MMW MMICs (s-MMICs) based on these devices including the highest fundamental transistor oscillator MMIC at 347 GHz and the highest...
A three-stage W-band InGaAs/InAlAs/InP HEMT Low-Noise Amplifier (LNA) has been fabricated with 0.1mum EBL gate and improved Ohmic contact. A noise figure of 2.5 dB with an associated gain of 19.4 dB is demonstrated at 94 GHz. To our knowledge, it is the best noise/gain performance in a W-band LNA ever reported. A noise figure of 2.7 dB and an associated gain of 14.6 dB is also demonstrated with a...
In this paper, we present the latest advancements of sub 50 nm InGaAs/lnAIAs/lnP high electron mobility transistor (InP HEMT) devices that have achieved extrapolated Fmax above 1 THz. This extrapolation is both based on unilateral gain (1.2 THz) and maximum stable gain/maximum available gain (1.1 THz) extrapolations, with an associated fT of 385 GHz. This extrapolation is validated by the demonstration...
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