Fortunately, the centerfed aperturecoupled element couples to the magnetic. The dualpolarized patch antennas applying probe director or coupled feeding have a limited impedance bandwidth or high crosspolarization 57. Moreover, an aperture coupled feed yields better gain and radiation pattern for a dual polarized antenna aimed for wireless applications 712. A multilayer organic package with 64 dualpolarized. The antenna uses a novel configuration of symmetric and asymmetric coupling. This antenna differs from any other microstrip antenna with their feeding structure of the radiating patch element. Meanwhile, to improve the isolation at the low frequency band, a rectangular slot is etched along the diagonal line of the ground plane. The assembled package consists of a 2layer lid substrate, a 2layer frame, and a 14layer base substrate. A wideband, dual polarized printed antenna is designed and developed in this paper. Dual polarized wideband aperture stacked patch antennas. 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. Many efforts have been made on the dualpolarization slotcoupled patch antennas to achieve sufficient bandwidth, low back radiation, low levels.
Circularly polarized aperture coupled microstrip antenna with. The proposed antenna contains reflector, substrate, patch and. A wideband highgain dualpolarized slot array patch. 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. In order to achieve the wideband characteristic, this design considers a slot coupled patch antenna structure. 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. In this paper, a dual polarized patch antenna capacitively coupled through four feeds is proposed. The antenna consists of a cushaped slotted patch radiator with an aperture coupled feeding system. A wideband highgain dualpolarized slot array patch antenna. Abstract this letter presents the design and realization of a compact dual polarized aperture coupled microstrip patch antenna for.
A dual polarized antenna on a printed circuit board, the antenna comprises a plurality of orthogonally placed microstrip lines. A dual polarized aperture coupled circular patch antenna using a cshaped coupling slot abstract. An aperture coupled dual polarized wideband microstrip antenna with high porttoport isolation in cband is presented in this paper. A singlefeed miniaturized circularly polarized patch antenna has been proposed and studied in this paper. A wideband dualpolarized patch antenna fed with the aperture. Pdf dual polarised aperturecoupled patch antenna using. For broad bandwidth and easy integration with active circuits, it uses the aperture coupled stacked patches. An introduction of aperture coupled microstrip slot antenna with microstrip line feed has been discussed 14. The corner feeding of square microstrip patches is applied. Compact wideband dual polarized microstrip patch antenna k. 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.
Introduction the microstrip antennas msas are the most. Variations in isolation between orthogonal feedlines and antenna axial. Circularly polarized, aperturecoupled patch antennas for a 2. A novel compact dual polarized antenna is proposed. Highisolation dualpolarized microstrip antenna via. A wideband dualpolarized stacked microstrip patch antenna. 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. The antenna is based upon an aperture stacked patch layout and incorporates a simple dual layered feeding technique to achieve dual polarized radiation. Planar microstrip antenna can be built with the theoretically infinite number of layers. Pdf this paper presents a simple broadband dualpolarized microstrip antenna with only three layers. Pdf dualpolarized aperturecoupled wideband microstrip patch.
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. Introduction bandwidth enhancement by multiple resonances is a widely used technique for microstrip patch antennas. Dual polarized patch antenna designs microstrip patch antennas. 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. A multilayer organic package with 64 dualpolarized antennas.
Smith submitted to the office of graduate studies of. A shared aperture dual frequency circularly polarized microstrip array antenna article pdf available in ieee antennas and wireless propagation letters 12. 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. Dual polarization stacked microstrip patch antenna array with very low crosspolarization johan granholm, member, ieee, and kim woelders. Pdf aperture coupled microstrip antenna for dualband. Miniaturized circularly polarized patch antenna using coupled.
Pdf an aperturecoupled dualpolarized wideband microstrip antenna with high porttoport isolation in cband is presented in this paper. Dual polarized patch antenna designs microstrip patch. Dgw with defected square patch is first proposed to excite a single. Kai chang recent days, antennas play an important role in wireless communication system. Lots of studies on improving the performances in theses domains of dual polarized patch antennas have been reported. 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. An aperturecoupled dualpolarized wideband microstrip antenna with high porttoport isolation in cband is presented in this paper. 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.
The enhanced bandwidth is achieved by using a stacked patch configuration and dumbbell shaped slots. One used an aperturecoupled and lprobe fed together 4. Lots of studies on improving the performances in theses domains of dualpolarized patch antennas have been reported. A wideband dualpolarized patch antenna fed with the. By means of four shorting pins the bandwidth increases noticeably. Dualpolarized 28ghz airfilled siw phased antenna array for. Nikmehr, a dual band dual polarized microstrip array antenna for base stations, progress in electromagnetics. A dual polarized aperture coupled patch structure with.
To meet these requirements many various dualpolarized antennas have been developed 16. A shared aperture dualfrequency circularly polarized. A new design for a dual polarized aperture coupled patch antenna is presented. 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. Abstracta new design for a wideband dualpolarized aperturecoupled patch antenna with dumbbell shaped coupling slots is presented. The isolation between the two ports is above 28 db in the bandwidth, and the gain is 6. Design of striplinefed dual polarization aperture coupled stacked microstrip patch phased array antenna for wideband application. The paper discusses the element and subarray requirements and designs for advanced dual polarized future spaceborne sar antennas using.
This antenna differs from any other microstrip antenna with. 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. In this contribution a dual band, dual polarized microstrip antenna element for array applications is presented. A novel single or dual polarized ultrawideband uwb patch antenna fed by coupled feeding mechanism is proposed. The flexible coaxial cables directly feeding technique is used in 8, 9 to improve the isolation and crosspolarization, but the antennas are relatively high. First, an aperturecoupled microstrip antenna with a single rectangular slot, that exhibits a wideband characteristic for single polarization, is designed.
Index terms aperture coupled antenna, axial ratio, cslot, circular patch, dual polarization, isolation, radio frequency identification rfid antenna. Broadband dualpolarized aperturecoupled patch antennas with modified hshaped coupling slots abstract. Then, the design procedure is repeated for an antenna with. Abstractin this paper, a compact broadband dualpolarized stacked patch antenna with the aperture coupled microstrip feed is proposed. The dualpolarized behavior is explained as follows.
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. In order to obtain a maximum radiation efficiency and frequency bandwidth a thick patch substrate with a low. A broadband proximitycoupled dualpolarized microstrip. A dual polarized aperture coupled circular patch antenna. Input signal couples to the radiating patch trough the aperture that exists on the ground plane of microstrip feed line. This thesis focuses on the aperture coupled patch antenna due to the lack of fabrication and tuning documentation. Pdf simple broadband dualpolarized aperturecoupled microstrip. Geometry of the aperture coupled stacked patch microstrip gps antenna. This paper presents air gap aperture coupled microstrip antenna for dual band operation over the frequency range of 2. For broad bandwidth and easy integration with active circuits, it uses the aperturecoupled stacked patches.
The printed antenna consists of two stacked patches and an aperture slotted ground plane which is excited using a microstrip line feed. Design of striplinefed dual polarization aperturecoupled. Siw, aperturecoupled antenna, cavitybacked patch antenna, dualpolarized, 5g wireless communication, phased antenna array. In, the proximitycoupled feed technique is presented which provides a broader relative bandwidth with a simple structure. Key result therefore, its a suitable candidate for arrays, and could be used in base stations for wifi applications. A twoslot dual polarized antenna with a return loss bandwidth of 505 mhz is introduced using the proposed configuration. Broadband dualpolarized aperturecoupled patch antennas. In, a dualpolarized patch antenna with four capacitively coupled feeds is presented which can achieve an ultrawide bandwidth of about 2.
Circularly polarized aperture coupled microstrip antenna. Dualpolarized aperturecoupled wideband microstrip patch antenna with high isolation for cband abstract. 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. Dualpolarized slotcoupled planar antenna with wide. This paper presents a new design of aperturecoupled patch antennas with modified hshaped coupling slots for achieving dualpolarization radiation with hi. Dualpolarized aperturecoupled wideband microstrip patch. The antenna uses a novel configuration of symmetric and asymmetric coupling slots. Dualpolarized aperturecoupled patch antennas with application to retrodirective and monopulse arrays abstract. The proposed antenna contains reflector, substrate, patch. The single polarized antenna consists of a square ring patch and two. 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 polarized multilayer aperturecoupled patch antennas for. Broadband dualpolarized aperturecoupled patch antennas with. In order to provide the required bandwidth efficiency of the antenna work and bandwidth optimization of aperture coupled stacked patch antenna. Design of wideband lprobefed dual polarized patch antennas. Wideband dual linear polarized microstrip patch antenna a thesis by christopher b. This article presents a novel circular polarized cp aperture coupled stack antenna for wireless local area network and worldwide interoperability for microwave access dual.
Model and analyze dual polarized patchmicrostrip antenna. Enhancement in isolation and bandwidth for aperture coupled patch antennas. Dualpolarized microstrip patch antennas could provide these features with low cost and easy fabrication. This thesis includes the design, production and measurement of a wideband dual polarized xband aperture coupled microstrip patch antenna. A broadband proximity coupled dual polarized microstrip antenna with a lshape backed cavity is presented. The defected square patch is called the perturbation element. The design and development of a dual linearly polarized aperture coupled circular microstrip patch antenna at cband are presented. 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. 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.
Therefore, the equivalent circuit modeling of a microstrip line fed hshaped slot is also studied in this thesis. Abstractan aperturecoupled dualpolarized wideband microstrip antenna with high porttoport isolation in cband is presented in this paper. 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. The proposed antenna contains reflector, substrate, patch and director.
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. Novel aperturecoupled microstripline feed for circularly. Ultrawideband dualpolarized patch antenna with four. 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. This solution, unfortunately, leads to a reduction in antenna efficiency and leads to excitation of surface waves.
Aperture coupled microstrip antenna design and analysis. Kband cross aperture coupled circularly polarized dual frequency microstrip patch antenna with single feed. Kaband antenna arrays with dualfrequency and dualpolarized. Figure 1 shows the geometry of the basic aperture coupled patch antenna. Stuchly department of electrical and computer engineering university of victoria, victoria, b. In this paper, a compact broadband dual polarized stacked patch antenna with the aperture coupled microstrip feed is proposed. Keywords aperture coupled microstrip antenna, back radiation reduction, circularly polarized microstrip antenna, crossslot coupled, microstrip antenna with resonant slots. Seriesfed aperturecoupled microstrip antennas and arrays. Us5945951a high isolation dual polarized antenna system.
However, such configurations occupy considerable space and are not always acceptable for integration with other circuitry. 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. Compact wideband dualpolarized microstrip patch antenna. Optimum design of an aperture coupled microstrip patch antenna describe in details. Circularly polarized antennas with switchable polarization sense. The wideband and dual polarized operation is achieved through the use of hshaped coupling slots.
The lshape cavity backed ground plane is used to enhance the feeding coupling and thus to broaden the bandwidth of this antenna. In general, two popular techniques for achieving dual polarization using aperturecoupled patch antennas are. Dual and circularly polarized aperture coupled microstrip antennas. Dual band circularly polarized aperture coupled microstrip antenna 1619 fig. High isolation dualpolarized patch antenna with hybrid. By adding a parasitic disc patch, the bandwidth is effectively broadened. Kband crossaperture coupled circularly polarized dual frequency microstrip patch antenna with single feed. Some of these works have used an aperturecoupled feed to improve bandwidth and isolation. Microstrip patch antennas world scientific publishing.
Dual polarization stacked microstrip patch antenna array. A dualband circularly polarized aperturecoupled stacked. Kband crossaperture coupled circularly polarized dual. 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. The cushaped slot is embedded on the square patch for dual band and dual sense circularly polarized radiation. Use of a stacked patch configuration also introduces a double tuning effect. A broadband dualpolarized microstrip patch antenna with. The proposed antenna not only consists of a fullplanar structure, but also is easy to be fabricated for its simple structure. 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. 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. The compact stack antenna consisted of square fractal patch, aperture couple, feed line and the perturbation. For handheld wireless systems, a compact single patch on moderately thick substrate is preferred.
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. Design of wideband lprobefed dualpolarized patch antennas. A novel slotted patch antenna is proposed for dual band circularly polarized radiation using an aperture coupled feed. The antenna uses a novel configuration of symmetric and. Miniaturized circularly polarized patch antenna using. Compact dual polarized aperture coupled microstrip patch antenna. Moreover, an aperture coupled feed yields better gain and radiation pattern for a dualpolarized antenna aimed for wireless applications 712. High isolation dualpolarized patch antenna with hybrid ring. Bandwidth in excess of 70 percent can be achieved with aperturecoupled stacked patches 6. Bandwidth optimization of aperturecoupled stacked patch antenna.
1483 1583 1429 642 725 485 206 744 397 371 526 394 1068 1312 1271 985 1513 617 286 974 627 761 1093 723 254 1371 1184 1018 115 1354