In order to improve the tracking ability of soccer robot in complicated static and dynamic environment, a method trajectory based on multiobject detection algorithm is proposed. This makes use advantages convenient polar coordinate calculation realistic path simulation puts coding two-dimensional coordinates. Then, distance relationship between current point, next obstacle point used judge whet...

This paper presents a general analysis of the 3rd-order nonlinearity of a differential common-emitter (CE) radio frequency (RF) amplifier and a novel way to cancel the 3rd-order nonlinearity. A SiGe BiCMOS mixer is designed based on the 3rd-order cancellation scheme. The mixer achieves +6dBm IIP3, 15dB gain and 7.7dB NF with only 2.2mA current at 2.1GHz. This performance substantially exceeds t...

Title of Document: ULTRA SMALL ANTENNA AND LOW POWER RECEIVER FOR SMART DUST WIRELESS SENSOR NETWORKS Bo Yang Doctor of Philosophy, 2009 Directed By: Professor Neil Goldsman Department of Electrical and Computer Engineering Wireless Sensor Networks have the potential for profound impact on our daily lives. Smart Dust Wireless Sensor Networks (SDWSNs) are emerging members of the Wireless Sensor ...

A new high frequency CMOS current-mode receiver front-end composed of a current-mode low noise amplifier (LNA) and a current-mode down-conversion mixer has been proposed in the frequency band of 24 GHz and fabricated in 0.13-lm 1P8M CMOS technology. The measurement of the current-mode receiver front-end exhibits a conversion gain of 11.3 dB, a noise figure (NF) of 14.2 dB, the input-referred 1-...

This paper describes a 1.5-V 5 GHz I/Q down conversion mixer in a 0.18-μm CMOS process. The mixer achieves a conversion gain of 12.7 dB within 1-dB compression point (iCP1dB) of -15.83 dBm. It also achieves a double side band (DSB) NF of 13.5 dB. The mixer's IIP3 is -5.94 dBm. The mixer consumes only 5.72 mA of current from a 1.5-V power supply. Key-Words: Analog RF-CMOS, IEEE 802.11a, IEEE 802...