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This paper presents two ultra wide bandwidth low noise amplifiers utilizing 0.18-um AlGaN/GaN HEMT technology. The single-stage, resistive feedback microstrip amplifiers target two different frequency bands, 0.3 - 4 GHz and 1.2 - 18 GHz, capable of better than 13:1 bandwidth. Both amplifiers use dual-gate HEMT devices with an on-chip drain bias network. The low frequency amplifier achieves 17.7 dB...
This paper reports on a S-,C-band LNA-PA which achieves a sub-0.2 dB noise figure over a multi-octave band and a Psat of 2 Watts at a cooled temperature of -30degC. The GaN MMIC is based on a 0.2 mum AlGaN/GaN-SiC HEMT technology with an fT ~ 75 GHz. At a cool temperature of -30degC and a power bias of 15 V-400 mA, the MMIC obtains 0.25-0.45 dB NF over a 2- 8 GHz band and a linear PldB of 32.8 dBm...
This paper describes a manufacturable and reliable 0.1 μm AlSb/InAs MMIC technology for ultra-low power applications. AlSb/InAs HEMTs have been demonstrated with only one-tenth power dissipation of conventional InAlAs/InGaAs/InP HEMTs. The uniform DC and RF performance of AlSb/InAs HEMTs have been demonstrated on 3-inch GaAs substrates. The further demonstration of reliable AlSb/InAs HEMT technology...
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