Presented in this paper is design of the new CMOS circuits to implement Min and Max operators. This work is based on analog advantages such as low die area, high DC range and simplicity which are added to the fuzzy system advantages. For implementing this idea, new current mode circuits are proposed which based on Wilson current mirrors. We used the one of them (min circuit) in implementing inference part of the Fuzzy Logic Controller (FLC) chip to combine the antecedents (fuzzy currents) of fuzzifier circuit. The simulation results of min and max circuits with applicable in designing FLC chip(which consists of two inputs, four membership functions for each one, sixteen rules and one output which designed in an area less than 0.1 mm 2 )has been done in 0.35um CMOS standard technology using Hspice software. Prepared

A very low complexity impulse radio‐ultrawideband (IR‐UWB) transmitter suitable for balanced antenna is presented. This all‐digital transmitter employs the binary phase‐shift keying (BPSK) modulation scheme and eliminates the need for a balun. Also, a new Gaussian monocycle pulse generator is proposed which is used as impulse transmitted signal. The transmitter circuit was designed in 0.18‐μm complementary metal–oxide–semiconductor technology. The post‐simulation results show that the core chip size was only 0.02 mm2. The output amplitude pulse yielded 150 mV peak‐to‐peak under a supply voltage of 1.8 V. Simulation results show that the transmitter consumes 8.5 pJ/pulse for 200‐MHz pulse repeating frequency. © 2014 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

This paper presents a robust image watermarking method based on geometric modeling. In this method, nine samples of the approximation coefficient of the image blocks are utilized to construct a plane in the 3-D space. We change the dihedral angle formed between the created plane and the x-y plane for data embedding. In order to preserve the imperceptibility of the watermark, geometrical computations are used to minimize the embedding distortion. Due to embedding in the dihedral angle between two planes, the proposed scheme has high robustness to gain attacks. Besides, by using the low frequency components of the image blocks for data embedding, high robustness against noise and compression attacks has been achieved. Experimental results confirm the validity of the theoretical analysis given in this paper and show the superiority of the method over similar techniques in this field.