3.1–10.6 GHz ultra‐wideband RF receiver in 0.18 μm CMOS technology

Abstract

fed monopole antenna having frequency band-notch function, IEEE Microwave Wireless Compon Lett 15 (2005), 766-768. 2. FCC first report and order on ultra-wideband technology,2002. Planar ultrawideband antennas with multiple notched bands based on etched slots on the patch and/or split ring resonators on the feed line, principle applied to the design of metasurfaces and metamaterials, Phys Rev Lett 93 (2004), A miniature UWB planar monopole antenna with 5-GHz band-rejection filter and the time-domain characteristics,ABSTRACT: This article presents an ultra-wideband (UWB). RF receiver that includes a low noise amplifier (LNA) and a singlebalanced mixer (SBM). The LNA uses an RC shunt feedback technique for broadening the bandwidth. Besides, an inductor is used as an Figure 8 Measured y-z plane and x-z plane radiation pattern for proposed antenna at (a) 3.5 GHz and (b) 9 GHz 232interstage match at the cascode LNA that efficiently improves the flatness of the cascode LNA. The RC shunt feedback is also applied to the g m stage of mixer for the input impedance match. The low-pass IF load is used to improve the LO/IF isolation of the SBM. The measured results of the UWB RF receiver are a conversion gain of 17.5-19.5 dB, a double side-band noise figure of 5.25-6.89 dB at 100 MHz IF frequency under an LO power of 2 dBm, a minimal 1-dB compression point (P 1dB ) of À31 dBm, an input third order intercept point of À12 dBm, the isolations among all ports of better than À40 dB. The total power consumption is 29.1 mW.ABSTRACT: A dual-band microstrip bandpass filter is proposed. With the assistance of modified short-circuit quarter-wavelength resonators, the dual-band bandpass filter can be developed. Theoretical analysis and design procedures are provided; the prototypical bandpass filter with dual passbands is fabricated and measured as well. Well-matched simulated results and experimental data validate the proposed filter.