International Journal of Wireless and Microwave Technologies (IJWMT)

IJWMT Vol. 4, No. 5, Nov. 2014

Cover page and Table of Contents: PDF (size: 731KB)

Table Of Contents

REGULAR PAPERS

RF CMOS Low Noise Amplifier Design-A Case Study

By R.K.Lamba C.H.Vithalani

DOI: https://doi.org/10.5815/ijwmt.2014.05.02, Pub. Date: 26 Nov. 2014

A design methodology of Differential Design of CMOS low noise amplifier (LNA) with source degeneration for Bluetooth frequency is presented. The results show that the proposed topology is effective and can be used to achieve the minimum noise figure at all frequencies of interest. This LNA was realized in 0.18μm CMOS technology using Microwave Office Tool from AWR Inc. The measured noise figure is 2.066 dB and the gain is 20.29 dB.

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CPW-fed Wideband Antenna with U-shaped Ground Plane

By Shagun Maheshwari Priyanka Jain Archana Agarwal

DOI: https://doi.org/10.5815/ijwmt.2014.05.03, Pub. Date: 26 Nov. 2014

This paper proposes the design of CPW-fed wideband antenna with U-shaped ground plane. The proposed antenna is a simple printed antenna, which is fed by a 50Ω CPW line. The Antenna has a compact size of 13mm×25mm. To obtain wide bandwidth, a slot is cut in ground plane and radiating patch is modified. The proposed antenna yields the operating frequency range from 7.3GHz to 15.1GHz, which offers the bandwidth of 7.79GHz. Simulation has been performed by using CST Microwave Studio Software. This frequency range satisfies the system requirements for Narrowband PCS Services, Satellite, Cellular Phone, Domestic Public Land Mobile Communication and International Public Broadcasting applications.

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Characterization of Shielding Effectiveness of General Metallized Structure

By Avinash Mritunjay Rai Ravindra Kumar Yadav

DOI: https://doi.org/10.5815/ijwmt.2014.05.04, Pub. Date: 26 Nov. 2014

This paper describes the step-by-step procedure to design an aperture and calculation of Shielding effectiveness (SE) based on the literature reviewed and is analytically and experimentally verified using High Frequency Structural Simulator (HFSS).Also this paper includes the characterization of SE for different materials like copper, aluminum, stainless steel and nickel, which is further examined for different parameters variation effect (like dimension of wire, length of wire and frequency) is analyzed.

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