Range Automotive Radar Research Articles

A 38–40 dB Power Gain and 2.4 dB NF Three-Stage Cascaded/Cascoded LNA for Long Range Automotive Radar Application

This paper demonstrates novel technique to devise a three-stage millimeter-wave low noise amplifier (LNA) operated at 76–77 GHz frequency band used in long range automotive Radar application. LNA having high power gain along with low noise figure is necessary for long range automotive Radar application. High power gain is one of the biggest challenges in the LNA design of the long range automotive application (nearly 40 dB power loss of received echo signal). Here, we propose a novel method to design an LNA using three configurations, i.e., cascaded, cascoded and differential. Design methodology used for this proposed LNA are also discussed in this paper. Power, small-signal, noise and stability analysis of post-layout and RC-extracted novel LNA are carried for the same. The proposed LNA is implemented in 45 nm complementary metal oxide semiconductor process, and its results show 2.4 dB noise factor 38–40 dB maximum power gain. It also provides outstanding stability and minimum size which is best suitable for Automotive integrated Radar sensor.

High-Gain and Low-Power Power Amplifier for 24-GHz Automotive Radars

This paper presents a high gain and low power 24-GHz power amplifier (PA) for the short range automotive radar. The proposed circuit is implemented using TSMC 0.13-µm RF CMOS (fT/fmax=120/140 GHz) technology, and it is powered by a 1.5-V supply. To improve power gain of the amplifier, it has a 2-stage cascode scheme. This circuit uses transmission lines to reduce total chip size instead of real bulky inductors for input and output impedance matching. The layout techniques for RF (radio frequency) are used to reduce parasitic capacitances at the band of 24 GHz. The proposed RF amplifier has low cost and low power dissipation since it is realized using all CMOS processes. The proposed circuit showed the smallest chip size of 0.12 mm 2 , the lowest power dissipation of 44.3 mW and the highest power gain of 24.04 dB as compared to recently reported research results.

Development of a mid range automotive radar sensor for future driver assistance systems

Radar sensors are key components of modern driver assistance systems. The application of such systems in urban environments for safety applications is the primary goal of the project “Radar on Chip for Cars” (RoCC). Major outcomes of this project will be presented and discussed in this contribution. These outcomes include the specification of radar sensors for future driver assistance systems, radar concepts, and integration technologies for silicon-germanium (SiGe) MMICs, as well as the development and evaluation of a system demonstrator. A radar architecture utilizing planar antennas and highly integrated components will be proposed and discussed with respect to system specifications. The developed system demonstrator will be evaluated in terms of key parameters such as field of view, distance, and angular separability. Finally, as an outlook a new mid range radar (MRR) will be introduced incorporating several concepts and technologies developed in this project.

Simulation the Hybrid Combinations of 24GHz and 77GHz Automotive Radar

In this paper we used MATLAB simulation to simulate the hybrid combinations of short range automotive radar (SRR) operating at frequency 24 GHz and long range automotive radar (LRR) operating at frequency 77 GHz. We obtained the velocity, the range and the time of scanning target. The objective of this work is to get the advantage of both SRR and LRR covering short and long distance with high resolution from 1m to 200m range.