A yagi-uda antenna for L-band (1-2GHz) frequency range is presented. The designing formulas and related antenna characteristics such as return loss, radiation pattern and gain were also discussed in this paper.

Remote Malignant tumor diagnostics plays a significant role in the ability of contemporary medicine to treat cancer illnesses because early stage cancer can be treated successfully by well-developed conventional techniques. Various techniques have been used so far to design such antennas for different type of diseases. This review paper is an output of a detailed survey of various available techniques. The objective of this paper is to provide an overview of these challenges, a nd discuss the ways in which they have been dealt with so far in the literature.

The purpose of this paper is to show the effect of soil which is used as a loaded material on Microstrip patch antenna operated at 1.5 GHz. In this paper different type of soil are taken & compare their effect when it is wet & dry. For this purpose the device IE3D simulator, Spectrum Analyzer (FS315) and tested soil from soil lab. From this experimental result here show that how much signal absorbed when it loaded.

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We have gone through a detailed literature review, after the research it was found that among the various available techniques to design multiband patch antenna, proximity coupled technique was found more suitable and efficient to design a multiband antenna. This simulated antenna is a three-band antenna which has the capability to operate at three distinguished frequencies. This proposed design of proximity coupled technique has comb like structure contains no defected ground, a pentagonal shaped patch and a meandered feed, which is designed to connect a SMA connector. Designed antenna is a 3-layer device having higher radiation intensity at 3.18, 4.36 and 5.18GHz.