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Novel UWB Monopole Antenna With Band Notched Characteristics
V.N.Koteswara Rao. Devana,B.S.L.Mounika,B.Yamini,G.Anitha,G.BalaSaiTarun 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.5
A compact planar monopole antenna with band-notched characteristics suitable for Ultra Wideband (UWB) applications is presented. The proposed UWB microstrip-fed antenna consisting of U-shaped slots in both patch and the microstrip-feed line with a defected ground structure. This antenna is designed to cover the Federal Communication Commission (FCC) bandwidth for UWB applications (2.04-14.6 GHz), while showing tri band-notched characteristics in the frequency bands of: (3-4.3 GHz) used for WiMAX, (6.12-6.8 GHz) used for C-band uplink frequency and (8.7-9.2 GHz) used for aeronautical radio navigation. The proposed antenna is suitable for various narrow band wireless applications, satellite applications and radar applications. The proposed UWB antenna is simulated by using High Frequency Structural Simulator (HFSS).
Bistable Microdevice with Electrothermal Compliant Mechanism
C. Joshitha,Chella Santhosh,B. S. Sreeja,S. Rooban,G. S. N. Koteswara Rao 한국전기전자재료학회 2022 Transactions on Electrical and Electronic Material Vol.23 No.3
The compliance mechanism plays a crucial role in the MEMS (Micro-Electro-Mechanical Systems) device design as it provides elastic body deformation through respective force and motion transmission. This paper presents, an electrothermal compliant mechanism using V-beam combo structure. Design methodology, fabrication process flow, characterization results and future scope of the proposed device are elaborated. The limited elasticity of Silicon material resulted in limited response of the fabricated device compared to the FEM tool results. Hence an extended optimization for the design structure through POLYMUMPs process is recommended to overcome the limitation. The proposed device finds an application in RF switch domain with its low power consumption feature.