SiGe HBT based 24-GHz LNA and VCO for Short-Range Ultra-Wideband Radar Systems

3–10-GHz Ultra-Wideband Low-Noise Amplifier Utilizing Miller Effect and Inductive Shunt–Shunt Feedback Technique

“…The proposed methodology takes advantage of the Miller effect for UWB input impedance matching and the inductive shunt-shunt feedback technique for bandwidth extension by pole and zero cancellation. Although inductive shunt-shunt feedback topology has been seen [12]- [14] before, their major intention is for transistor neutralization or peaking rather than circuit pole-zero cancellation, which will be detailed later in this paper. This paper is organized as follows.…”

An X-Band Low Noise Amplifier Design for Marine Navigation Radars

“…The LNA is one of the most important building blocks of the receiver, since it is responsible in properly amplifying the received data for the following detection process. For this reason the intrinsic Noise Figure (NF) of such an amplifier plays the most important role for the total system NF in dBs (F system pure number), as shown in (2), where F i and G i are the NF and the gain respectively of each device of the system [1]- [5]. So the first limitation for our design (our target) is the achievement of 7 dB NF.…”

A 21–27 GHz CMOS wideband LNA with 9.3±1.3 dB gain and 103.9±8.1 ps group-delay using standard 0.18 μm CMOS technology

“…Recently, ultra-wideband (UWB) technology has attracted a lot of attention because they can be applied in high-resolution pulsed radar systems and high-speed, short-range data communications [1]. In 2005, the European Conference of Postal and Telecommunications Administrations (CEPT) released 5-GHz-wide UWB around 24 GHz, from 21.65 to 26.65 GHz, for short-range radar applications [2].…”

“…Recently, thanks to the rapid development of CMOS/ BiCMOS processes, it has become possible to apply such processes to RF circuits with frequencies above 20 GHz or even 60 GHz. Although SiGe-HBT-based UWB LNAs for 24-GHz short-range UWB radar systems have been reported [1], [3], it is more desirable to implement the 24-GHz-band UWB LNA by using the more cost-effective bulk CMOS processes. There are some reports of bulk CMOS LNAs designed for frequencies above 20 GHz [4]- [8].…”