Abstract a low-profile modified elliptical structure ultra-wide-band monopole antenna for skin cancer detection is presented in this paper. The developed over an FR-4 lossy substrate with permittivity 4.3 and height of 1.6 mm. dimensions 20 × 28 mm 3 it covers frequency range 2.82-12.56 GHz. proposed consists circular shaped radiators partial ground plane, to achieve optimized low profile ultra...

<span>A coplanar waveguide</span><em></em><span>fed ultra-wideband antenna with extended transmission band to WLAN frequency is investigated. The proposed consists of a modified </span><span>semi-</span><span>circular patch and staircase ground plane. prototype fabricated on low cost FR4 substrate dielectric constant 4.4</span><span...

Microstrip antenna is broadly used in the modern communication system due to its significant features such as light weight, inexpensive, low profile, and ease of integration with radio frequency devices. The fractal shape applied geometry obtain ultra-wideband antennas. In this paper, sierpinski carpet monopole (SCFMA) developed for base case, first iteration second wideband based on space fill...

A new system-on-a-chip radar sensor for next-generation wearable wireless interface applied to the human health care and safeguard is presented. The system overview is provided and the feasibility study of the radar sensor is presented. In detail, the overall system consists of a radar sensor for detecting the heart and breath rates and a low-power IEEE 802.15.4 ZigBee radio interface, which pr...

Log-periodic array antennas have been investigated over a long period of time, the reason for the same being its provision of a constant radiation performance and good reflection coefficient performance over a wide frequency band, which can be considered as an important characteristic of this type of antennas. It created a high impact on development of new generation antennas with advanced feat...

Introduction: Ultra-wideband antenna arrays achieve operation over bandwidths of 4:1 or more. These arrays are traditionally costly due to high element counts. Wavelength-scaled arrays (WSAs) have the same aperture size and bandwidth as traditional ultra-wideband arrays, but have significantly fewer elements. Using scaled elements of three different sizes, an 8:1 bandwidth WSA has fewer than 18...

Ultra wideband (UWB) radar is considered a promising technology to complement existing camera-based surveillance systems because, unlike cameras, it provides excellent range resolution. Many of the UWB radar imaging algorithms are based on large-scale antenna arrays that are not necessarily practical because of their complexity and high cost. To resolve this issue, we previously developed a two...

Ultra-wideband pulse radars are promising candidates for 3-dimensional environment measurements by autonomous robots. Estimating 3-dimensional target shapes by scanning with an omni-directional antenna is an ill-posed inverse problem. Conventional algorithms such as the synthetic aperture method or parametric algorithms have a problem in terms of their calculation times. We have clarified the e...