Title :
A 38-GHz Down-Converter with Low Noise Variable Gain Amplifier having 24dB dynamic range in SMT package
Author_Institution :
Wireless Semicond. Div., Avago Technol., San Jose, CA, USA
Abstract :
In the higher frequency bands of the point-to-point communication systems, it is difficult to achieve a Low Noise Variable Gain Amplifier with high dynamic range along with good linearity and low noise figure. This paper describes a solution that covers the 38GHz band in low cost SMT package in the form of a complete Down-Converter MMIC. The MMIC comprises of a Low Noise Variable Gain Amplifier (LNVGA), a LO Buffer and a Sub-Harmonic Image-Reject Mixer (SHIRM). The Down-Converter provides 12.5dB of conversion gain with 24dB of gain control, +1dBm of Input IP3 and 3.3dB NF in the 38GHz band. This complete Down-Converter is integrated in a 2.5mm × 2.35mm chip area and realized with Avago´s internal 0.17um PHEMT process. The result is the most integrated and the best combination of performances to be published or advertised.
Keywords :
MMIC amplifiers; buffer circuits; high electron mobility transistors; low noise amplifiers; millimetre wave amplifiers; mixers (circuits); surface mount technology; Avago internal PHEMT process; LNVGA; LO buffer; SHIRM; SMT package; down-converter MMIC; frequency 38 GHz; gain 12.5 dB; gain 24 dB; low noise variable gain amplifier; noise figure 3.3 dB; point-to-point communication system; size 0.17 mum; subharmonic image-reject mixer; Dynamic range; FETs; Gain; MMICs; Mixers; Radio frequency; Voltage control; Down-converters; LO buffer; Low Noise Amplifier; SMT package; Variable Gain Amplifier;
Conference_Titel :
Microwave Integrated Circuits Conference (EuMIC), 2011 European
Conference_Location :
Manchester
Print_ISBN :
978-1-61284-236-3
