Title :
Performance Amelioration of an Active Integrated Spiral Antenna System for UWB Applications
Author :
Jalali, M. ; Abdipour, A. ; Tavakoli, A. ; Moradi, G.
Author_Institution :
Dept. of Electr. Eng., Amirkabir Univ. of Technol., Tehran
Abstract :
This paper describes the implementation of an active integrated spiral antenna for UWB (ultra-wideband) applications. By integrating a low-noise amplifier with antenna, the voltage standing wave ratio (VSWR) can be kept low for a large bandwidth and this antenna indicate a 13 dB improvement in gain compared with one using a passive antenna with the same design, resulting in an improved spiral antenna performance for UWB. For the designed circuit in the UWB frequency range (3.1-10.6 GHz), the gain of the LNA is better than 13 dB, its noise figure is less than 3 dB, S11 and S22 are less than -13 dB, respectively
Keywords :
active antennas; low noise amplifiers; microwave antennas; spiral antennas; ultra wideband antennas; ultra wideband communication; 13 dB; 3.1 to 10.6 GHz; LNA; UWB applications; VSWR; active integrated spiral antenna system; low-noise amplifier; noise figure; voltage standing wave ratio; Bandwidth; Circuits; Frequency; Low-noise amplifiers; Noise figure; Performance gain; Spirals; Ultra wideband antennas; Ultra wideband technology; Voltage;
Conference_Titel :
Antenna Technology: Small and Smart Antennas Metamaterials and Applications, 2007. IWAT '07. International Workshop on
Conference_Location :
Cambridge
Print_ISBN :
1-4244-1088-6
Electronic_ISBN :
1-4244-1088-6
DOI :
10.1109/IWAT.2007.370140
