An arrow headed modi ed cross slot array antenna with dual. Dual linearly polarized microstrip array antenna intechopen. A novel differentialfed patch antenna on steppedimpedance resonator with enhanced bandwidth under dualresonance. Based on the cavity model for a square mpa, the tm10 and tm30 modes as well as. The antenna has a radiative element and a feed pin.
Properties of a basic microstrip patch a microstrip or patch antenna is a lowprofile antenna that has a number of advantages over other antennas. Shorting pin loaded dualband compact rectangular microstrip antenna. Shorting pin loaded dualband compact rectangular microstrip. Equivalent circuit of proposed stacked patch antenna. Compared with other similar implantable antennas, the proposed antenna incorporates three advantages for biotelemetry communication. Pdf on the resonant frequencies of dualband patch antennas. Thin dualresonant stacked shorted patch antenna for. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal. The designed antenna has a frequency bandwidth of 184 mhz with the upper cutoff frequency of 2. Abstract dualhequency patch antennas may provide an alternative to largebandwidth planar antennas, in.
Performance optimization of microstrip antenna array using. Microstrip patch antenna with dual resonance and dual polarization. The aim of this research is to achieve smaller size, better bandwidth and good radiation capability. The resonant circuit comprises an inductive element connected to the feed pin and a capacitor connected in parallel to the inductive element, which has a center tap for adjusting the impedance of the resonant circuit relative to the antenna impedance.
This paper proposes a design for a microstrip patch antenna with dual resonance and dual polarization fed by proximity coupled quarter wavelength. A lowprofile aperturecoupled microstrip patch antenna mpa using the tm10 and tm30 resonant modes to enhance the impedance bandwidth is proposed in this paper. Dualresonance microstrip patch antenna mehmet sefa dem. A compact broadband antenna with dualresonance for. Patch antennas are low cost, have a low profile and are easily fabricated. It is found that the antenna exhibits dual resonance and both the resonance frequency. In this thesis, a multiband stacked patch antenna for satellite communications is. A lowprofile aperturecoupled microstrip antenna with enhanced bandwidth under dual resonance abstract. Antennas in references 11 were designed as flexible and conformal structures for some special application scenarios. The proposed array con guration consists of an array of four arrow headed modi ed cross slot elements which are electromagnetically coupled by using a 1. A lowprofile aperturecoupled microstrip antenna with.
The measured results show a resonance frequency of 2. First, it can realize a broad impedance bandwidth by exhibiting dual resonances. Consider the microstrip antenna shown in figure 1, fed by a microstrip transmission line. A microstrip antenna array between two fss was proposed for application in wlan. While the antenna can be a 3d structure wrapped around a cylinder, for example, it is usually flat and that is why patch. The performance of four dualpolarized square patch antennas has been. Gapcoupled hshaped antenna for wireless applications. By utilizing this property, an effective technique is proposed to realise dual band dual polarized patch antenna. The resonant frequency of the antenna with the metamaterial substrate was reduced. Theta polarized electric field radiation patterns are in figures 5 and 6 respectively, for two resonance frequencies. Note that, cross polarization levels are near 20 db. Vainikainen a novel thin stacked shorted patch antenna for the 1800mhz frequency band is presented. Bifji gentili department of electronic engineering university of florence via s.
A novel design concept to enhance the bandwidth of a differentialfed patch antenna using the dualresonant radiation of a steppedimpedance resonator sir is proposed. Pdf hshaped stacked patch antenna for dual band operation. Dualfrequency patch antennas may provide an alternative to largebandwidth planar antennas, in applications in which large bandwidth is really needed for operating at two separate transmitreceive. Dualfrequency antennas exhibit a dualresonant behavior.
If the patch is probe fed and thick, the impedance at resonance will have a. Dualresonant implantable circular patch antenna for. Microstrip antennas are becoming very widespread within the mobile phone market. Ne xt, we present an antenna concept for a singlefrequenc y antenna with a smooth cosine distrib ution, which extends our pre vious w ork 3 by detailed tl calculation, taking into account all voltages at impedance discontinuities the patch edges. In this paper, we propose a compact broadband implantable antenna with dual resonance for implantable medical devices. A wideband antenna comprises a seriesresonant antenna and a resonant circuit. Design of a multiband stacked microstrip patch antenna for satellite. Recently a dualband patch antenna using slots is reported 7 with an improved bandwidth of. A parallel or corporate feed configuration was used to build up the array.
The geometry has two symmetry planes, to provide radiation in duallinear polarization, as required in sar. The metal radiating strips of the antenna were properly bent to obtain dual resonant frequencies and a. Dualband patch antenna this project analyzes a dualband patch antenna, designed for mobile phones to be used as an internal antenna. Thin dualresonant stacked shorted patch antenna for mobile communications j. The crosspatch resonance is only slightly perturbed by the four square patches, providing that the radiating edges of the cross patch are sufficiently spaced from the four square patches.
As the last example, three different dualresonant shorted patch antenna realizations are compared with the circuit model and with a fullwave electromagnetic. Abstractdesign and development of a novel arrow headed modi ed cross slot array antenna with dual band characteristics and circular polarisation is reported. Most of the dual polarized microstrip antenna was design to generate signals with vertical. The basics of patch antennas, updated orban microwave. However, d and ishaped antennas are single resonant frequency antennas both resonating at.
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