Dual polarization stacked microstrip patch antenna array with very low crosspolarization johan granholm, member, ieee, and kim woelders. High isolation dualpolarized patch antenna with hybrid ring. Dual band circularly polarized aperture coupled microstrip antenna 1619 fig. A shared aperture dualfrequency circularly polarized.
Key result therefore, its a suitable candidate for arrays, and could be used in base stations for wifi applications. Bandwidth optimization of aperturecoupled stacked patch antenna. A dual polarized antenna on a printed circuit board, the antenna comprises a plurality of orthogonally placed microstrip lines. A wideband, dual polarized printed antenna is designed and developed in this paper. Moreover, an aperture coupled feed yields better gain and radiation pattern for a dual polarized antenna aimed for wireless applications 712.
Variations in isolation between orthogonal feedlines and antenna axial. Pdf simple broadband dualpolarized aperturecoupled microstrip. Introduction the microstrip antennas msas are the most. A dual polarized aperture coupled circular patch antenna.
Kai chang recent days, antennas play an important role in wireless communication system. An aperturecoupled dualpolarized wideband microstrip antenna with high porttoport isolation in cband is presented in this paper. Optimum design of an aperture coupled microstrip patch antenna describe in details. The paper discusses the element and subarray requirements and designs for advanced dual polarized future spaceborne sar antennas using. A wideband highgain dualpolarized slot array patch. In this paper, a compact broadband dual polarized stacked patch antenna with the aperture coupled microstrip feed is proposed. In this contribution a dual band, dual polarized microstrip antenna element for array applications is presented. The cushaped slot is embedded on the square patch for dual band and dual sense circularly polarized radiation. In general, two popular techniques for achieving dual polarization using aperturecoupled patch antennas are. First, an aperturecoupled microstrip antenna with a single rectangular slot, that exhibits a wideband characteristic for single polarization, is designed. The proposed antenna contains reflector, substrate, patch and. Figure 1 shows the geometry of the basic aperture coupled patch antenna.
This paper presents a new design of aperturecoupled patch antennas with modified hshaped coupling slots for achieving dualpolarization radiation with hi. In this paper, a dual polarized patch antenna capacitively coupled through four feeds is proposed. By adding a parasitic disc patch, the bandwidth is effectively broadened. Microstrip patch antennas have become the favorite of antenna designers because of their versatility and having the 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. A wideband dualpolarized stacked microstrip patch antenna. A singlefeed miniaturized circularly polarized patch antenna has been proposed and studied in this paper.
Dual polarized wideband aperture stacked 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. Furthermore, many dual polarized antennas are designed with microstrip lines integrated with aperture coupled radiating patches due to the associated lower manufacturing cost and the desirable slim. Broadband dualpolarized aperturecoupled patch antennas with modified hshaped coupling slots abstract. An aperture coupled dual polarized wideband microstrip antenna with high porttoport isolation in cband is presented in this paper. This thesis includes the design, production and measurement of a wideband dual polarized xband aperture coupled microstrip patch antenna. The dualpolarized behavior is explained as follows. Fortunately, the centerfed aperturecoupled element couples to the magnetic. For handheld wireless systems, a compact single patch on moderately thick substrate is preferred.
Introduction bandwidth enhancement by multiple resonances is a widely used technique for microstrip patch antennas. For broad bandwidth and easy integration with active circuits, it uses the aperture coupled stacked patches. Smith submitted to the office of graduate studies of. In, the proximitycoupled feed technique is presented which provides a broader relative bandwidth with a simple structure. Highisolation dualpolarized microstrip antenna via. Miniaturized circularly polarized patch antenna using coupled. The dualpolarized patch antennas applying probe director or coupled feeding have a limited impedance bandwidth or high crosspolarization 57. Use of a stacked patch configuration also introduces a double tuning effect. The proposed antenna contains reflector, substrate, patch.
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. The patch antenna is designed to operate simultaneously at around 30 and 20 ghz, the up and downlink frequencies of modern kaband satellite communication systems. Pdf an aperturecoupled dualpolarized wideband microstrip antenna with high porttoport isolation in cband is presented in this paper. The corner feeding of square microstrip patches is applied. Circularly polarized, aperturecoupled patch antennas for a 2. Stuchly department of electrical and computer engineering university of victoria, victoria, b. A novel compact dual polarized antenna is proposed. Circularly polarized aperture coupled microstrip antenna with. An isolation technique, which does not require conventional circulators, is proposed for the realization of a simple and lowcost aperturecoupled circularly polarized antenna for application to fullduplex devices.
Abstract this letter presents the design and realization of a compact dual polarized aperture coupled microstrip patch antenna for. Nikmehr, a dual band dual polarized microstrip array antenna for base stations, progress in electromagnetics. To meet these requirements many various dualpolarized antennas have been developed 16. Seriesfed aperturecoupled microstrip antennas and arrays. Bandwidth in excess of 70 percent can be achieved with aperturecoupled stacked patches 6. Dualpolarized 28ghz airfilled siw phased antenna array for. The assembled package consists of a 2layer lid substrate, a 2layer frame, and a 14layer base substrate. Enhancement in isolation and bandwidth for aperture coupled patch antennas. A dualband circularly polarized aperturecoupled stacked. The defected square patch is called the perturbation element. A dual polarized aperture coupled circular patch antenna using a cshaped coupling slot abstract. 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.
Dual and circularly polarized aperture coupled microstrip antennas. Compact wideband dual polarized microstrip patch antenna k. The dual polarized antenna yields a bandwidth of 20. A novel slotted patch antenna is proposed for dual band circularly polarized radiation using an aperture coupled feed.
A broadband proximity coupled dual polarized microstrip antenna with a lshape backed cavity is presented. Dual polarized patch antenna designs microstrip patch. Dualpolarized aperturecoupled patch antennas with application to retrodirective and monopulse arrays abstract. Compact dual polarized aperture coupled microstrip patch antenna. Seriesfed aperturecoupled microstrip antennas and arrays by bojana zivanovic a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy department of electrical engineering college of engineering university of south florida major professor. 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. Broadband dualpolarized aperturecoupled patch antennas.
Dualpolarized aperturecoupled wideband microstrip patch. At resonance frequencies f 1, f 2 and f 3, the antenna has two radiating strips perpendicular to each other, which radiate in vertical and horizontal polarizations. Aperture coupled microstrip antenna design and analysis michael paul civerolo a linearly polarized aperture coupled patch antenna design is characterized and optimized using hfss antenna simulation software 1. Kband crossaperture coupled circularly polarized dual. This antenna differs from any other microstrip antenna with their feeding structure of the radiating patch element. Kband crossaperture coupled circularly polarized dual frequency microstrip patch antenna with single feed. The antenna uses a novel configuration of symmetric and asymmetric coupling. Model and analyze dual polarized patchmicrostrip antenna. Design of wideband lprobefed dualpolarized patch antennas. Compact wideband dualpolarized microstrip patch antenna.
Keywords aperture coupled microstrip antenna, back radiation reduction, circularly polarized microstrip antenna, crossslot coupled, microstrip antenna with resonant slots. A wideband dualpolarized patch antenna fed with the. In, a dualpolarized patch antenna with four capacitively coupled feeds is presented which can achieve an ultrawide bandwidth of about 2. Kaband antenna arrays with dualfrequency and dualpolarized. The printed antenna consists of two stacked patches and an aperture slotted ground plane which is excited using a microstrip line feed. Circularly polarized antennas with switchable polarization sense. 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.
This thesis focuses on the aperture coupled patch antenna due to the lack of fabrication and tuning documentation. The antenna is based upon an aperture stacked patch layout and incorporates a simple dual layered feeding technique to achieve dual polarized radiation. Dual polarization stacked microstrip patch antenna array. This example shows how to design and measure a wideband dual polarized microstrip antenna that finds its use at the base station of a cellular system. This antenna differs from any other microstrip antenna with. 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. Pdf dualpolarized aperturecoupled wideband microstrip patch. This paper presents air gap aperture coupled microstrip antenna for dual band operation over the frequency range of 2. The single polarized antenna consists of a square ring patch and two. Dualpolarized microstrip patch antennas could provide these features with low cost and easy fabrication. The compact stack antenna consisted of square fractal patch, aperture couple, feed line and the perturbation.
Pdf dual polarised aperturecoupled patch antenna using. The antenna consists of a cushaped slotted patch radiator with an aperture coupled feeding system. In this communication, a dual polarized aperture coupled microstrip patch antenna with a broadbandwidth highisolation low crosspolarization levels, and lowbackward radiation levels is designed and its features are presented. Ultrawideband dualpolarized patch antenna with four. High isolation dualpolarized patch antenna with hybrid. The enhanced bandwidth is achieved by using a stacked patch configuration and dumbbell shaped slots. In order to achieve the wideband characteristic, this design considers a slot coupled patch antenna structure. However, such configurations occupy considerable space and are not always acceptable for integration with other circuitry.
The proposed antenna contains reflector, substrate, patch and director. Seriesfed aperture coupled microstrip antennas and arrays by bojana zivanovic a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy department of electrical engineering college of engineering university of south florida major professor. Dualpolarized slotcoupled planar antenna with wide. The design and development of a dual linearly polarized aperture coupled circular microstrip patch antenna at cband are presented. Novel aperturecoupled microstripline feed for circularly. Abstractan aperturecoupled dualpolarized wideband microstrip antenna with high porttoport isolation in cband is presented in this paper. The antenna uses a novel configuration of symmetric and asymmetric coupling slots. The lshape cavity backed ground plane is used to enhance the feeding coupling and thus to broaden the bandwidth of this antenna. For broad bandwidth and easy integration with active circuits, it uses the aperturecoupled stacked patches. This article presents a novel circular polarized cp aperture coupled stack antenna for wireless local area network and worldwide interoperability for microwave access dual. Pdf this paper presents a simple broadband dualpolarized microstrip antenna with only three layers. Then, the design procedure is repeated for an antenna with.
Circularly polarized aperture coupled microstrip antenna. 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. With an external quadrature hybrid coupler connected to the two orthogonal feedlines, the antenna yields 3db axial ratio bandwidth of more than 30% at 5. A twoslot dual polarized antenna with a return loss bandwidth of 505 mhz is introduced using the proposed configuration. The antenna uses a novel configuration of symmetric and. Kband cross aperture coupled circularly polarized dual frequency microstrip patch antenna with single feed. Design of striplinefed dual polarization aperture coupled stacked microstrip patch phased array antenna for wideband application. 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. Design of wideband lprobefed dual polarized patch antennas. This solution, unfortunately, leads to a reduction in antenna efficiency and leads to excitation of surface waves. A novel single or dual polarized ultrawideband uwb patch antenna fed by coupled feeding mechanism is proposed. An exploded view of the dual polarized microstrip antenna and a simplified equivalent circuit model for an aperture coupled microstrip antenna are shown in figure 1.
The wideband and dual polarized operation is achieved through the use of hshaped coupling slots. The flexible coaxial cables directly feeding technique is used in 8, 9 to improve the isolation and crosspolarization, but the antennas are relatively high. Some of these works have used an aperturecoupled feed to improve bandwidth and isolation. The isolation between the two ports is above 28 db in the bandwidth, and the gain is 6. Us5945951a high isolation dual polarized antenna system. Miniaturized circularly polarized patch antenna using. Pdf aperture coupled microstrip antenna for dualband. Design of striplinefed dual polarization aperturecoupled. Planar microstrip antenna can be built with the theoretically infinite number of layers. Dual polarized multilayer aperturecoupled patch antennas for. A shared aperture dual frequency circularly polarized microstrip array antenna article pdf available in ieee antennas and wireless propagation letters 12. Input signal couples to the radiating patch trough the aperture that exists on the ground plane of microstrip feed line. A multilayer organic package with 64 dualpolarized antennas.
A broadband dualpolarized microstrip patch antenna with. Abstracta new design for a wideband dualpolarized aperturecoupled patch antenna with dumbbell shaped coupling slots is presented. One used an aperturecoupled and lprobe fed together 4. Index terms aperture coupled antenna, axial ratio, cslot, circular patch, dual polarization, isolation, radio frequency identification rfid antenna. Aperture coupled microstrip antenna design and analysis. Moreover, an aperture coupled feed yields better gain and radiation pattern for a dualpolarized antenna aimed for wireless applications 712. 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. In order to obtain a maximum radiation efficiency and frequency bandwidth a thick patch substrate with a low. A dual polarized aperture coupled patch structure with. 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. An introduction of aperture coupled microstrip slot antenna with microstrip line feed has been discussed 14. A multilayer organic package with 64 dualpolarized. Also the bandwidth achieved by the electromagnetically coupled dual polarized patch antenna 25 is found to be much larger than that achieved using probe fed, proximity coupled 26, aperture.
Therefore, the equivalent circuit modeling of a microstrip line fed hshaped slot is also studied in this thesis. A new design for a dual polarized aperture coupled patch antenna is presented. The printed antenna has a measured 10 db return loss bandwidth of 52% and an isolation between the excitation ports of greater than 39 db over this frequency. These dual polarized antennas with multiple slots are generally more difficult to design and fabricate than the classical dual polarized antenna with two slots in. Broadband dualpolarized aperturecoupled patch antennas with. Dualpolarized aperturecoupled wideband microstrip patch antenna with high isolation for cband abstract. Dual polarized patch antenna designs microstrip patch antennas. Abstractin this paper, a compact broadband dualpolarized stacked patch antenna with the aperture coupled microstrip feed is proposed. In order to provide the required bandwidth efficiency of the antenna work and bandwidth optimization of aperture coupled stacked patch antenna. 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. A broadband proximitycoupled dualpolarized microstrip. By means of four shorting pins the bandwidth increases noticeably. Many efforts have been made on the dualpolarization slotcoupled patch antennas to achieve sufficient bandwidth, low back radiation, low levels. Lots of studies on improving the performances in theses domains of dualpolarized patch antennas have been reported.
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