Conventional microstrip antennas in general have a conducting patch printed on a grounded microwave substrate, and have the attractive features of low profile, light weight, easy fabrication, and conformability to mounting hosts [1]. However, mi-crostrip antennas inherently have a narrow bandwidth, and bandwidth enhancement is usually demanded for practical applications. In addition, applicatio...

The C-shaped microstrip antenna is a compact variation of rectangular microstrip antenna and it has smaller bandwidth as compared to the rectangular patch. In this paper, bandwidth of C-shaped microstrip antenna is first increased by using proximity feeding technique. Further gap-coupled configuration of two C-shaped microstrip antennas on thicker substrate is proposed. It gives bandwidth of mo...

A low profile patch antenna for GPS application is here proposed and analyzed. The radiating structure consists on a square patch with 8 slits introduced on each side and on the corners to reduce the overall dimensions. The circular polarization is obtained by quadrature feeding the patch with two pins placed symmetrically on the two main axis. The 90° phase shift is obtained by a 90° microstri...

A transmission line model is adopted for the analysis of slot-coupled microstrip reflectarrays. The current on the equivalent impedance for the single radiating element is used to obtain the reflectarray phase design curve. Computational costs are drastically reduced with respect to theoretical full-wave analysis. Numerical and experimental validations are presented on the phase curve useful fo...

it is shown how the radiation characteristic of a patch antenna can be manipulated by a small number of normally magnetized ferrite disks inserted in the resonant region of the patch. It is shown that a oneand dual-band circular polarized microstrip antenna can be obtained by taking advantage of the interaction of the antenna cavity field with the magnetized ferrite disks. . The dependence of t...

This paper presents a design of trapezoidal microstrip patch with T-shaped slot.Trapezoidal patch is designed on a FR4 substrate having relative permittivity of 4.4and loss tangent of 0.0013.The substrate is having thickness of 1.6mm at which a trapezoidal patch antenna with Tslot has been introduced in this paper.The selection of design is based upon the dimension and location giving a better ...

Wireless local area network (WLAN) is a technology that combines computer network with wireless communication technology. The 2.4 GHz and 5 GHz frequency bands in the Industrial Scientific Medical (ISM) band can be used in the WLAN environment. Because of the development of wireless communication technology and the use of the frequency bands without the need for authorization, the application o...

Modern wireless and mobile communication systems requires antenna which should have light weight, low profile, low cost, and easy to be integrated with RF devices. This demand is completed by microstrip antennas. This paper presents rectangular microstrip patch antenna for WLAN applications designed using IE3D software. The microstrip antenna is designed with dielectric substrate as Rogers RT/d...

The compact variation of equilateral triangular microstrip antenna, a shorted 600 Sectoral microstrip antenna is discussed. The proximity fed shorted 600 Sectoral microstrip antenna is proposed which gives simulated and measured BW of more than 700 MHz (>60%). To increase the bandwidth and gain, gap-coupled configuration two Shorted 600 Sectoral patches is proposed. It yields simulated and meas...

This paper presents coaxial feed rectangular microstrip patch antenna. A narrow Lshaped microstrip antenna is fed at the corner using a coaxial feed to obtain a LP operation. Experiments are carriedout to investigate its return loss, its radiation and its time domain behavior, which exhibit good radiation pattern. The simple rectangular and compact L-shaped microstrip antenna is simulated with ...