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This paper presents a 18 GHz cm-Wave measurement-based campaign and path-loss analysis and a comparison with the traditional Alpha-Beta (AB) and the Close-in (CI) propagation models. A suburban scenario in the city of Belo Horizonte, Minas Gerais, Brazil, was considered and measurements were done considering LOS and NLOS conditions. The recorded samples data were processed and an outdoor propagation...
This work presents an integrated ultra high frequency (UHF), broadband direct-conversion receiver. The receiver integrates a single-ended RFVGA, an on-chip single-to-differential balun, a current-mode passive mixer, and a combination of continuous and discrete-time baseband filter with built-in anti-aliasing. Targeted to operate between 470-862 MHz, the receiver achieves a noise figure of 7.9dB, an...
In this paper a two stage CMOS Radio Frequency (RF) low noise transconductance amplifier is proposed. The feed-forward noise-cancelling technique is exploited to improve the Noise Figure (NF). Simulations with 45 nm CMOS process have been performed to verify the proposed design. The LNA achieves a transconductance of 115 mS, -3 dB bandwidth of 4.5 GHz, NF of 3.4 dB and IIP3 of -10 dBm. Compared to...
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