Stuchly department of electrical and computer engineering university of victoria, victoria, b. In this paper, a dualpolarized patch antenna capacitively coupled through four feeds is proposed. An aperturecoupled dualpolarized wideband microstrip antenna with high. Pdf this paper presents a simple broadband dualpolarized microstrip antenna with only three layers. Dualpolarized aperturecoupled wideband microstrip patch. By introducing peripheral slits in the aforesaid patch, the bandwidth falls to 0. Design of striplinefed dualpolarization aperturecoupled stacked microstrip patch phased array antenna for wideband application. Dualpolarized slotcoupled antenna with a better isolation can be obtained by using multiple coupling slots, as the multifeed technique is capable of suppressing higherorder modes. Introduction this article introduces the basic concepts of patch antennas.
Abstract a new method for radiating dual or circular polarization with a printed circuit antenna element is described. The basics of patch antennas, updated orban microwave. Design of wideband lprobefed dual polarized patch antennas. Development and optimization of the aperture coupled stacked microstrip patch antenna is presented, which has dual polarization with great enhancement of bandwidth. Recently, a dualpolarized patch antenna fed by a wide balun can realize wide working band, low crosspolarization, and high isolation performances. We use a simple rectangular, half wave long, probefed patch operating in its fundamental mode as an example.
Linear polarized patch antenna for satellite communication. Broadband dualpolarized aperturecoupled patch antennas with. Although rectangular shaped slot coupled patch antennas are widely used in most of the applications, their utilization in dual polarized antenna structures is not feasible due to space limitation. Compact wideband dualpolarized microstrip patch antenna k. Geometry of the aperture coupled stacked patch microstrip gps antenna. Dual band aperture coupled stacked microstrip patch. The proposed antenna contains reflector, substrate, patch and director. Xband antenna for cubesat satellite september 2016 january 2017. Dualpolarized slotcoupled planar antenna with wide. A dualband circularly polarized aperturecoupled stacked. Slot coupled patch antenna structure is considered in order to achieve the wideband characteristic. The electromagnetic power is coupled from the feed line to radiating patch through proximity coupling feeding technique for. Dual and circularly polarized aperture coupled microstrip antennas.
The enhanced bandwidth is achieved by using a stacked patch configuration and dumbbell shaped slots. Miniaturized circularly polarized patch antenna using coupled. Many efforts have been made on the dualpolarization slotcoupled patch antennas to achieve sufficient bandwidth, low back radiation, low. In, a dualpolarized patch antenna with four capacitively coupled feeds is presented which can achieve an ultrawide bandwidth of about 2. Pdf simple broadband dualpolarized aperturecoupled microstrip. This paper presents a new design of aperture coupled patch antennas with modified hshaped coupling slots for achieving dual polarization radiation with high isolation over a wide bandwidth. Varying several physical parameters of aperture and matching feed line lengths had very large effect on the performance of the antenna.
This paper presents air gap aperture coupled microstrip antenna for dualband operation over the frequency range of 2. In this paper, a compact broadband dual polarized stacked patch antenna with the aperture coupled microstrip feed is proposed. This paper presents air gap aperture coupled microstrip antenna for dual band operation over the frequency range of 2. Compact wideband dualpolarized microstrip patch antenna. The isolation and cross polarization have become better than 31. In this paper, a dual polarized patch antenna fed by a hybrid ring structure is proposed.
Variations in isolation between orthogonal feedlines and antenna axial. In this paper, a dual polarized patch antenna capacitively coupled through four feeds is proposed. The antenna uses a novel configuration of symmetric and asymmetric coupling slots. Novel broadband aperturecoupled patch antenna using bow. In order to obtain a maximum radiation efficiency and frequency bandwidth a thick patch substrate with a low. However, the asymmetric feeding structures will lead to different performances from the two ports. This paper presents a dual band aperture coupled stacked microstrip antenna with the introduction of an air gap 3 mm between the ground plane and the upper layer substrate for wlan applications.
A dualpolarization aperture coupled stacked microstrip patch. A new design procedure based on optimizing the orthogonal mode isolation is demonstrated experimentally to provide highly decoupled feedlines and radiated fields with low cross. A broadband proximitycoupled dualpolarized microstrip. Dual polarized antenna array design the dual polarized emcp antenna is used for the design of higher gain 2. A bowtie shaped aperture consists of a slot with a narrow center and the width steadily increases toward each end. Pdf dual polarised aperturecoupled patch antenna using. A novel dual polarized, wideband microstrip patch antenna with aperture coupling abstract.
Broadband dualpolarized aperturecoupled patch antennas. A dual polarized aperture coupled circular patch antenna. This paper presents a simple broadband dualpolarized microstrip antenna with only three layers. In each antenna element, two rectangular slots are used for coupling the microstrip feed lines to the radiating patch. Dual polarized microstrip patch antenna, reduced in size by. A novel dualpolarized, wideband microstrip patch antenna. Dual band aperture coupled stacked microstrip patch antenna. Kai chang recent days, antennas play an important role in wireless communication system. Crossslot structures for dualpolarized antennas have. Ultrawideband dualpolarized patch antenna with four. The proposed antenna dualpolarized aperturecoupled wideband microstrip patch antenna with high isolation for cband ieee conference publication. By using four shorting pins the 10db bandwidth of the antenna has increased from 24% to 50 %. Chapter 2 bandwidth optimization of aperture coupled stacked patch antenna marek bugaj and marian wnuk additional information is available at the end of the chapter.
A broadband proximity coupled dual polarized microstrip antenna with a lshape backed cavity is presented. Dual band polarization agile compact planar antenna for. A square microstrip patch on one substrate is coupled to a pair of microstriplines on another substrate via two orthogonal, rectangular apertures in a common ground plane. Aperturecoupled patch antennas are especially suited to meet the antenna specifications because the multilayer structure of those antennas allows the radiation characteristics patch layer substrate and the size of the feed network feed layer substrate to be optimized independently. In this paper, a compact broadband dualpolarized stacked patch antenna with the aperture coupled microstrip feed is proposed. Circularly polarized antennas with switchable polarization sense. Design of a dualpolarized stacked patch antenna for wide. Dualpolarized 28ghz airfilled siw phased antenna array. A broadband dualpolarized microstrip patch antenna with aperture coupling abstract. High isolation dualpolarized patch antenna with hybrid ring. Dual polarized slot coupled antenna with a better isolation can be obtained by using multiple coupling slots, as the multifeed technique is capable of suppressing higherorder modes. Circularly polarized aperture coupled microstrip antenna with.
Enhancement in isolation and bandwidth for aperturecoupled patch antennas. Meanwhile, to improve the isolation at the low frequency band, a rectangular slot is etched along the diagonal line of the ground plane. Development and optimization of the aperturecoupled stacked microstrip patch antenna is presented, which has dual polarization with great enhancement of bandwidth. Compact wideband dual polarized microstrip patch antenna k. Broadband dualpolarized aperturecoupled patch antennas with modified hshaped coupling slots abstract. A wideband highgain dualpolarized slot array patch antenna. For broad bandwidth and easy integration with active circuits, it uses the aperturecoupled stacked patches. The wellknown aperturecoupled antenna first proposed and demonstrated by pozar 1, has been developed into a variety of dualpolarization slotcoupled patch antennas reported in 25. In this communication, a dual polarized aperture coupled microstrip patch antenna with a broad bandwidth highisolation low crosspolarization levels, and lowbackward radiation levels is designed and its features are presented.
This paper presents a new design of aperturecoupled patch antennas with modified hshaped coupling slots for achieving dualpolarization radiation with hi. Aperture coupled patch antennas are especially suited to meet the antenna specifications because the multilayer structure of those antennas allows the radiation characteristics patch layer substrate and the size of the feed network feed layer substrate to be optimized independently. The dual polarized antenna yields a bandwidth of 20. A dualband aperturecoupled cp microstrip patch antenna is presented. Dualpolarized 28ghz airfilled siw phased antenna array for. Optimum design of an aperture coupled microstrip patch antenna describe in details. This paper presents a new design of aperturecoupled patch antennas with modified hshaped coupling slots for achieving dualpolarization radiation with high isolation over a wide bandwidth. Generally for parasitically coupled patch antennas the exciter element is kept separate from the main radiating patch, making the antenna larger in size. Enhancement in isolation and bandwidth for aperture coupled patch antennas. A new design for a dual polarized aperture coupled patch antenna is presented.
This degradation of the antenna bandwidth can be mitigated by use of various bandwidth enhancing techniques, such as vias or. The magnetic loop feeding dualpolarized patch antenna for bandwidth and isolation enhancement is reported in 4. A dual polarized aperture coupled circular patch antenna using a cshaped coupling slot article pdf available in ieee transactions on antennas and propagation 5112. Geometry of the aperturecoupled stackedpatch microstrip gps antenna. An aperture coupled dual polarized wideband microstrip antenna with high porttoport isolation in cband is presented in this paper.
We use a simple rectangular, half wave long, probefed patch operating in. Introduction bandwidth enhancement by multiple resonances is a widely used technique for microstrip patch antennas. The vertical and the horizontal slot are of equal length which is about 1. A singlefeed miniaturized circularly polarized patch antenna has been proposed and studied in this paper. For broad bandwidth and easy integration with active circuits, it uses the aperture coupled stacked patches.
The design and development of a dual linearly polarized aperture coupled circular microstrip patch antenna at cband are presented. Compared with other dual polarized patch antennas reported, the bandwidth of the proposed antenna is significantly increased and an impedance bandwidth of over 110% is obtained by applying such feeding mechanism. Recently, a dual polarized patch antenna fed by a wide balun can realize wide working band, low crosspolarization, and high isolation performances. Design of a high isolation dual polarized sband microstrip. This antenna differs from any other microstrip antenna with their feeding structure of the radiating patch element. Circularly polarized, aperturecoupled patch antennas for a 2.
Bandwidth optimization of aperturecoupled stacked patch antenna. Simple broadband dualpolarized aperturecoupled microstrip. Microstrip patch antennas have become the favorite of antenna designers because of its versatility and advantages of planar profile, ease of fabrication, compatibility with integrated circuit technology, and conformability with a shaped surface. A wideband dualpolarized patch antenna fed with the aperture.
By means of four shorting pins the bandwidth increases noticeably. By adding a parasitic disc patch, the bandwidth is effectively broadened. A wideband dualpolarized stacked microstrip patch antenna. Bandwidth optimization of aperturecoupled stacked patch. However, this antenna has a largesize inverted pyramidal cavity 0. The nominal antenna has 10 db return loss bandwidth of 4. An aperturecoupled dualpolarized wideband microstrip antenna with high porttoport isolation in cband is presented in this paper. A wideband highgain dualpolarized slot array patch antenna for. The dualpolarized magnetoelectric dipole antenna in 6 is fed by four. Dgw with defected square patch is first proposed to excite a single. Design of striplinefed dual polarization aperture coupled stacked microstrip patch phased array antenna for wideband application.
The single circular patch antenna fed by two rectangle coupling slots is proposed by karmakar and bialkowski 10. Dual linearly polarized microstrip patch antenna coupled to a coaxial probe feed has been demonstrated in this study. This degradation of the antenna bandwidth can be mitigated by use of various bandwidth enhancing techniques, such as vias or aperture coupled feeding. An exploded view of the dualpolarized microstrip antenna and a simplified equivalent circuit model for an aperture coupled microstrip antenna are shown in figure 1. The ports isolation is about 40 db over a 38% impedance bandwidth. Simulation data show an increase of up to 44% in the resonant frequency bandwidth of an antenna using the bowtie shaped aperture, compared to that. Citeseerx bandwidth enhancement in wireless applications by. Since its introduction in 1985 1, the features offered by this antenna element have proved to be useful in a wide variety of applications, and the versatility. Design of wideband lprobefed dualpolarized patch antennas. The proposed wideband duallinearly polarized aperturecoupled afsiw cavitybacked patch antenna is depicted in fig. The defected square patch is called the perturbation element. A broadband dualpolarized microstrip patch antenna with. Rather than the conventional placement strategy of shorting pins, four lshaped shorting strips are coupled to the patch radiator that not only contribute to the size reduction but also provide capability for broader band operation. Dual band circularly polarized aperture coupled microstrip antenna 1619 fig.
Dual polarized patch antenna designs microstrip patch antennas. Fortunately, the centerfed aperturecoupled element couples to the magnetic. Stacked antenna with aperture feeding mechanism results in great isolation between two feeds. Dual aperturecoupled microstrip antenna for dual or circular. The lshape cavity backed ground plane is used to enhance the feeding coupling and thus to broaden the bandwidth of this antenna. Dualband aperturecoupled cp antenna with single crossslot. However, the antennas have narrow impedance bandwidth.
A stacked afsiwbased antenna technology is exploited to overcome the drawbacks of microstrip antennas low ef. The square patch with triangular slots and dual feeding technique makes it possible to have a bandwidth of 6. This method isolates the feed structure from the radiating part, and also improves bandwidth of the antenna. Moreover, an aperture coupled feed yields better gain and radiation pattern for a dualpolarized antenna aimed for wireless applications 712. A novel dual polarized aperture coupled microstrip patch antenna with a wide bandwidth, high isolation, low crosspolarization levels and low backward radiation levels is designed and its features are presented.
Dualband circularly polarized aperturecoupled microstrip antenna 1619 fig. Highisolation dualpolarized microstrip antenna via. In this paper, a dualpolarized patch antenna fed by a hybrid ring structure is proposed. Conclusion in this paper, a wideband aperturecoupled dualpolarized antenna with high isolation at cband has presented. A broadband proximitycoupled dualpolarized microstrip antenna with a lshape backed cavity is presented. An introduction of aperture coupled microstrip slot antenna with microstrip line feed has been discussed 14. In this communication, a dualpolarized aperturecoupled microstrip patch antenna with a broadbandwidth highisolation low crosspolarization levels, and lowbackward radiation levels is designed and its features are presented. High isolation dualpolarized patch antenna with hybrid. Compared with other dualpolarized patch antennas reported, the bandwidth of the proposed antenna is significantly increased and an impedance bandwidth of over 110% is obtained by applying such feeding mechanism. It will be shown that the novel unit cell design is able to operate within a scanning range of 60 in the principal planes. This enables single antenna to be used for mobile communication, video streaming and calling as well as a position locator using gps tracker. Chapter 2 bandwidth optimization of aperturecoupled stacked patch antenna marek bugaj and marian wnuk additional information is available at the end of the chapter.
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