Jing Li, R. Ma, L. Han, Rongcao Yang, Wenmei Zhang
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引用次数: 3
Abstract
In this paper, the traditional 50Ω interface between the LNA (low-noise amplifier) and the BPF (band-pass filter) is removed, and a co-designed LNA-BPF is presented. The BPF is used to suppress the harmonics and acts as the matching network of LNA. The measured results show, at 2.5GHz, the co-designed LNA-filter achieves a voltage gain of 15.04 dB, a noise figure of 3.9 dB, 3rd harmonic suppression of 66.17dB and PI1dB of -13dBm. Compared with traditional versions with 50Ω interfaces, the co-designed version obtains a large voltage gain, better PI1dB and 3rd harmonic suppression and is more compact. Good agreement between the measured and simulated results is achieved.
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