The area of micro strip antennas has seen some inventive work in recent years and is currently one of the most dynamic fields of antenna theory. An overview of work done in the area of micro strip antennas is presented and several recent developments in the field are highlighted. In addition, new antenna configurations that improve electrical performance and manufacturability are described. This designing is very easy and chip in microstrip antenna designing. We analyzed micro strip antenna in IE3D by finite moment of method. The proposed antenna design on different substrate and analyzed result of both substrates between 1GHz to 20GHz,When the proposed antenna design on a 31 mil RT DUROID 5880 substrate from Rogers-Corp with dielectric constant of 2.2 and loss tangent of .004. At 14GHz the verify and tested result on IE3D SIMULATOR are Return loss = -10.35dB, VSWR=1.872, Directivity=6dbi, Z=32.94Ω Characteristic impedance, and when The proposed antenna design on a 60 mil RO4003 substrate from Rogers-Corp with dielectric constant of 3.4 and loss tangent of .002. At 10GHz the effective results of RO4003 substrate verify and tested on IE3D SIMULATOR are Return loss = -21.34dB, VSWR=1.192, Directivity=8dbi, Z=42.31Ω Characteristic impedance, Axial ratio (at theta=90deg) =96%. The optimum 60 mil RO4003 substrate E Shape microstrip patch antenna provides very good results between 10GHz to 20GHz, All results shown in Simulation results. The results shown in Table 1, Table2,

Backfire antenna 0.265λfor bandwidth enhancement is proposed and investigated. The proposed antenna is fed by a 50 Ω coaxial feed. The bandwidth of proposed antenna for S and C band is investigated. The performance of backfire antenna is investigated by performing numerical calculation by using various mathematical formulas to determine necessary dimensions of the antenna and simulation by using commercially available Method of Moments software. Here we design proposed geometry for 3 GHz. For this geometry we achieved 52.8% bandwidth for VSWR <2, minimum return loss −20 dB, and maximum directivity 7.2 dBi.

Speed of operation depends on the longest critical paths in the multi-bit adders and also the MOSFET transistor gain which in turn depends on transistor size. The power consumption in MOSFET is depends on the switching frequency, sub threshold leakage and switching time. In this paper, author proposed the speed and area efficient transistor base adder using static CMOS pass transistor logic, and shortened the longest critical path to decrease the total critical path delay. The design simulation on microwind layout tool calculates the worst-case delay in nanosecond and total power consumption in microwatt range.

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Microstrip patch antennas (MPA) have been widely used for many years due to their inherent advantages In terms of their inherent advantages in terms of low cost, small size, easy integration, and low-profile characteristics. MPA is genrally used in modern communication devices. But inherently it has narrow bandwidth. So to enhance bandwidth various techniques are used. In this review paper the researchers will be enhance the bandwidth by be using dimensionally invariance resonance frequency (DIResF) method and using different techniques like using slots in the patch by changing height, dielectric constant and feed point.