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In recent years, there has been a tremendous growth of cell phones with over several billions of users worldwide. Cell phone has made a great impact with our society. It is hard to imagine lives without cell phones. But the growth of cell phones and it's interaction with the human body raised the question of whether the radiation from cell phone is harmful or not? This paper gives a brief review of...
Radio Frequency microelectromechanical system (RF MEMS) is a relatively new field which has generated a tremendous amount of excitement because of its performance enhancement and low manufacturing cost. RF MEMS switch is a fundamental device that offers wide applications in defense and telecommunication systems. In this paper we propose an efficient approach based on Artificial Neural Network (ANN)...
In this paper capacitive fed Coplanar waveguide slot antenna is proposed for RFID applications. The fundamental parameters of the antenna such as bandwidth, return loss, gain, radiation pattern and polarization are obtained. All meets the acceptable antenna standards. Simulation tool, based on the method of moments (ZELAND IE3D version 12.0) has been used to analyze and optimize the proposed antenna.
A noise product ratio (NPR) test and/or simulation is a traditional way of examining the nonlinearity of devices such as high-power amplifiers (HPAs). The advantage of NPR testing and/or simulation includes the ability to use a noise source and filters to obtain the band of noise with the appropriate notch for test purposes, which is typically more easily accomplished than performing BER testing and/or...
A single diode mixer with ultra high LO/RF and LO/IF isolation and having good conversion loss has been designed. RF and LO signals are applied through BPF and LPF respectively. The mixer operates in C-band. It down converts the block of frequencies (5.925-6.425 GHz) to a block of frequencies (3.7-4.2 GHz) by local oscillator of signal frequency of 2.3 GHz. The proposed mixer achieves the double balanced...
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