Us6492947b2 stripline fed aperture coupled microstrip. This paper presents the design and results of a novel broadband dual polarized circular patch antenna. Design of striplinefed dualpolarization aperture coupled stacked microstrip patch phased array antenna for wideband application. Dual polarized patch antenna designs microstrip patch. Dual linearly polarized microstrip array antenna intechopen. Dualband dualpolarized mimo antenna design for gsm application. Us20040119645a1 broadband dualpolarized microstrip array. A dual polarized aperture coupled circular patch antenna. Coupling effects of aperture coupled microstrip antenna. The length of the patch radiator determines the resonant frequency of the antenna. A novel dualpolarized, wideband microstrip patch antenna. A dual polarized electromagnetically coupled microstrip antenna is designed with a suspended radiating element placed in inverted microstrip configuration and excited by two orthogonal microstrip line feeds to achieve broad bandwidth and high isolation.
A dual polarized shorted microstrip patch antenna for wideband application kenny s. A wideband highgain dualpolarized slot array patch antenna for. Highisolation dualpolarized microstrip antenna via substrate. Pdf dual polarised aperturecoupled patch antenna using. Shi national key laboratory of antennas and microwave technology xidian university xian, shaanxi 710071, china abstractin this paper, a fractal dualpolarized aperture coupled microstrip antenna is presented. Aperture coupled dual lp antenna, a configuration, and b prototype of a 4x2 array. In recent times, a lot of research has been proposed for the advancement of the aperture coupled antennas as ku band aperture coupled array was presented by song and bialkowski in 1998, gao et al.
Dualpolarized aperture coupled microstrip antennas have also been proposed in 3 where an isolation of 18db is reported. Many researches are carried out in the field of microstrip elements and arrays for synthetic aperture radar sar applications 912, mainly to achieve antennas capable of matching various demands. In this case all these options are used together to increase bandwidth, because of the. These dualpolarized antennas with multiple slots are generally more difficult to design and fabricate than the classical dualpolarized antenna with two slots in. The antenna array is composed of eight vh dualpolarized antenna elements with an element spacing of 116 mm, where is the wavelength in free space at the frequency 2. A triangular patch antenna for uhf band with microstrip.
The dual polarized antenna yields a bandwidth of 20. A broadband dualpolarization base station antenna element with a coupling feed. In order to obtain a maximum radiation efficiency and frequency bandwidth a thick patch substrate with a low. Miniaturized wideband aperture coupled microstrip patch. Haupt eecs, colorado school of mines, golden, co 80401 abstracta new design for a broadband focused planar array using aperture coupled stacked patches is presented.
Common methods to enhance the bandwidth of microstrip antenna elements are established e. A dualpolarized microstrip patch antenna fed by quasicrossshaped slot with the ports. By skillfully utilising the strong mutual coupling between the two dipoles, very good impedance match, sufficiently high isolation and low crosspolarisation can be achieved simultaneously. The enhanced bandwidth is achieved by using a stacked patch configuration and dumbbell shaped slots. Each patch element of the array is excited with same amplitude and phase that is achieved with proper novel impedance matching stub. A triangular patch antenna for uhf band with microstrip feed. Dual band dual polarized microstrip patch antenna core. First, an aperture coupled microstrip antenna with a single rectangular slot, that exhibits a wideband characteristic for single polarization, is designed. And the broadband dualpolarized microstrip array antenna according to the present invention arranges transmission paths for two separate linear polarization on a different layer each other in order to minimize an interference effect and a proximity feeding method and an aperture coupled method are used in order to get two separate polarization.
The proposed antenna can provide an swr bandwidth of over 16. Design of dual band dual polarized microstrip patch antennas. A broadband dualpolarization base station antenna element. A broadband dualpolarized omnidirectional antenna for base stations. Kai chang recent days, antennas play an important role in wireless communication system. Dual polarized microstrip patch planar array antennas with improved porttoport isolation. A dual polarized antenna on a printed circuit board, the antenna comprises a plurality of orthogonally placed microstrip lines. Pdf dualpolarized aperturecoupled wideband microstrip patch. Gao and others published a broadband dualpolarized microstrip patch antenna with aperture coupling find, read and cite all the research you need on researchgate. The simulated hpbws in the horizontal plane are for both vp and hp elements while the measured hpbws are for hp and for vp over the frequency range 1. This new microstrip antenna demonstrates improvement on the impedance bandwidth from 5% to 50% and 45dbi gain enhancement. The radiating patch is truncated to generate cp a b figure 1. Electromagnetic energy propagating along a stripline feedline is coupled through one of the ground plane surfaces through a tuned aperture to an adjacent microstrip feedline device, which may be a microstrip patch antenna.
The size reduction in the aperture length is an important advantage to the proposed bowtie slot. Seriesfed aperturecoupled microstrip antennas and arrays. Dualpolarized aperturecoupled wideband microstrip patch. Square patch on grooved dielectric foam, coupling slots and. The patch has a side length of 15 mm and is directly printed on a microwave substrate rt 5880 of thickness 1. A broadband dualpolarized microstrip patch antenna with aperture coupling abstract. In this paper, the design of a broadband dualpolarized microstrip. Effects of finite ground plane on the isolation and radiation properties of a broadband dualpolarized aperturecoupled patch antenna are experimentally investigated.
Highisolation dualpolarized microstrip antenna via. Application of defected ground structure for stable gain with. Dual band and dual polarized microstrip patch antenna. Many dualpolarized micrstrip arrays have also been reported 4. The whole radiating element of the proposed dual polarized square patch microstrip antenna is centered on the top of a 40x40 mm ground plane. Us7994985b2 isolation enhancement technique for dual. Aperture coupled microstrip antenna design and analysis. Design of a square ring shape slot antenna for uwb. A triangular patch antenna for uhf band with microstrip feed line for rfid applications twinkle kundu1 and davinder parkash2 1m. Design of wideband lprobefed dualpolarized patch antennas. A broadband dualpolarized microstrip patch antenna with aperture.
The aperture coupled microstrip antenna was developed by using cross slot aperture at the plane between feed line plane and ground plane. Optimization choice of laminates and other materials for the implementation of the antenna and antenna system is one of the most important steps in the process of designing microstrip antennas. Broadband focusing using aperture coupled microstrip patch antenna arrays payam nayeri, atef z. Chapter 8 talks about how this problem could be approached using smart antennas.
Optimization of aperture coupled microstrip patch antennas. Then, the design procedure is repeated for an antenna with. For example, in 6 the dualband dual polarized mimo antenna is investigated for lte band at 01 826 mhz and 02 2. A microstrip patch antenna mpa consists of a conducting patch of any planar or nonplanar geometry on one side of a dielectric substrate with a ground plane on other side. The square microstrip patch is fed at two comers via the hshaped apertures. The isolations of these antennas are about than 34 db, and bandwidth achieves 20 %. Introduction aperture coupling is an indirect method of feeding the patch. A new design for a dual polarized aperture coupled patch antenna is presented. A wideband dualpolarized stacked microstrip patch antenna. Design of wideband printed monopole antenna using wipld. A broadband dualpolarized microstrip patch antenna with aperture coupling.
Us5945951a high isolation dual polarized antenna system. A differentiallydriven dualpolarized magnetoelectric dipole antenna. A broadband proximitycoupled dualpolarized microstrip antenna with a lshape backed cavity is presented. Aditya, a dual polarized aperture coupled circular patch antenna using a cshaped coupling slot,ieee trans. Wong, broadband dualpolarized single mi crostrip patch antenna with high isolation and low cross polarization. A highisolation, wideband and duallinear polarization patch antenna. Then the application of air bridge in the dualpolarized antenna has reported in 1517. The width of the patch affects the resonant resistance of the antenna, with a wider patch giving a lower resistance. Shi national key laboratory of antennas and microwave technology xidian university xian, shaanxi 710071, china abstractin this paper, a fractal dualpolarized aperturecoupled microstrip antenna is presented. Simple broadband dualpolarized aperturecoupled microstrip antenna. Planar microstrip antenna can be built with the theoretically infinite number of layers. Low crosspolarization differential feed patch antenna array. 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. The feed line creates an electric field in the aperture, which induces surface currents on the patch.
Schaubert, dual aperturecoupled microstrip antenna for dual. Aperture coupled microstrip antenna design and analysis michael paul civerolo a linearlypolarized aperture coupled patch antenna design is characterized and optimized using hfss antenna simulation software 1. A triangular patch antenna for uhf band with microstrip feed line for rfid applications. Chapter 9 gives the summary and some of the future work being anticipated. For potential applications in mobile communication base stations, an 8element vh dualpolarized antenna array is developed, as illustrated in figure 6. A dual polarized aperture coupled circular patch antenna using a cshaped coupling slot. A highisolation dualpolarization microstrip patch antenna with quasicrossshaped coupling slot. A novel dualpolarized 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.
Similar, compact, dualpolarized antennas have been discussed in 4, wherein four, bended slots have been embedded within the square patch to achieve smaller size. Ieee transactions on antennas and propagation 56, no. Dualpolarized slotcoupled planar antenna with wide. An exploded view of the dualpolarized microstrip antenna and a simplified. Novel aperturecoupled microstripline feed for circularly. A broadband dualpolarized microstrip patch antenna with. Broadband verticallyhorizontally dualpolarized antenna for. A broadband proximitycoupled dualpolarized microstrip. Chapter 7 gives the details of a realistic antenna design, which in our case is a broadband dual polarized aperture coupled patch antenna. It is a popular printed resonant antenna for narrowband microwave wireless links that require semihemispherical coverage. The aperture coupled microstrip patch antenna feed technique 1 was introduced in 1985 that includes electrically isolated microstrip transmission lines and patch conductors. In this communication, a dualpolarized aperturecoupled microstrip patch antenna with a broadbandwidth highisolation low crosspolarization levels. Defected ground structure integrated rectangular microstrip. The array has a dolphtschebyscheff amplitude taper.
Dual polarized microstrip patch antenna, reduced in size. Dual polarized aperture coupled stacked element for base station antenna international journal of smart sensors and ad hoc networks ijssan, issn no. The parameter study is done in detail to show the guideline of designing this antenna. Wideband duallinear polarized stacked patch antenna with. Jun 23, 2016 the four most popular feed techniques used are the microstrip line, coaxial probe both contacting schemes, aperture coupling and proximity coupling both noncontacting schemes. Enhancement in isolation and bandwidth for aperture coupled patch antennas. Yeoa broadband dual polarized microstrip patch antenna with aperture coupling ieee trans antennas propag, 51 4 2003, pp. Bandwidth optimization of aperturecoupled stacked patch.
Novel broadband aperturecoupled patch antenna using bow. Moreover, an aperture coupled feed yields better gain and radiation pattern for a dualpolarized antenna aimed for wireless applications 712. Dual polarized patch antenna fed by meandering probes. In this communication, a dualpolarized aperture coupled microstrip patch antenna with a broadbandwidth highisolation low crosspolarization levels, and lowbackward radiation levels is. An aperturecoupled dualpolarized wideband microstrip antenna with high porttoport isolation in cband is presented in. Configuration of the proposed dualpolarized aperture coupled circular patch. A wideband highgain dualpolarized slot array patch.
The simulated using ansoft hfss v14 and measured hpbws for the vh dualpolarized antenna are plotted in figure 2 with an antenna prototype. Shichang gao,and alistair sambell,dualpolarized broadband microstrip antennas fed by proximity coupling, ieee trans. Gao s, li lw, leong ms, yeo ts 2003 a broadband dualpolarized microstrip patch antenna with aperture coupling. Microstrip antenna has narrow bandwidth characteristic. A broadband dualpolarized microstrip antenna with cavitybacked proximity coupling feeding shulin chen1, yanhui liu. Circularly polarized aperture coupled microstrip antenna. Broadband verticallyhorizontally dualpolarized antenna. The theoretical analysis is based on the finitedifference timedomain method. A compact circularly polarized multiband microstrip patch antenna with defective. Simple broadband dualpolarized aperturecoupled microstrip. Linear polarized patch antenna for satellite communication. Undesirable propagation modes are suppressed by enclosing the aperture coupled slot in a nonresonant cavity.
In this paper we discuss the microstrip antenna, types of microstrip antenna, feeding techniques and application of microstrip patch antenna with their advantage and disadvantages and the benefits of using slots. A new feeding technique for a broadband circularly polarized aperturecoupled patch antenna is proposed operating at xband. Aperture coupled microstrip antenna couples the patch antenna with microstripline through an aperture 1. Due to their structural complexity, it is challenging job to get the expected gain and bandwidth improvements.
The narrow working bandwidth of microstrip antennas limits their applications in in radar and communication systems. A broadband dualpolarized microstrip antenna with cavity. A broadband dualpolarized microstrip patch antenna with aperture coupling s gao, lw li, ms leong, ts yeo ieee transactions on antennas and propagation 51 4, 898900, 2003. The dualpolarized patch antenna has a thick air substrate for broadband operation 16% for both polarizations and is excited by microstrip lines through two h. The paper presents the design of a dualpolarized aperture coupled microstrip patch antenna suitable for passive 5. An aperture coupled microstrip patch antenna coupling circuit. Luk, a dualpolarized lprobe patch antenna, microwave conference, 2001 asiapacific, vol.
Pier c online an array of broadband dual polarized. Wimax is a standardbased wireless technology for broadband networks providing. This thesis focuses on the aperture coupled patch antenna due to the lack of fabrication and tuning documentation. Yeo, a broadband dualpolarized microstrip patch antenna with aperture coupling, ieee transactions on antennas and propagation, vol. The antenna is fed by microstrip lines through proximity coupling, and hshaped slots are cut. Wideband dual linearly polarized patch array antenna.
A broadband dualpolarized microstrip patch antenna with aperture coupling by s. In order to develop a dualpolarized patch antenna with these features, a pair of lprobes is utilized to excite the square patch orthogonally h. Singlelayer integrated microstrip array antenna for dual. Reducing mutual coupling of closely spaced microstrip antennas for wlan application is presented in 7. Finite ground plane effects on broadband dual polarized. Broadband focusing using aperturecoupled microstrip patch. Design of an airborne dualpolarized triple stacked patch. These structures are electromagnetically coupled through a small aperture in the isolating ground plane fig. Design of a dualpolarized microstrip patch antenna with excellent. Broad band dualpolarised proximity coupled circular path antenna. The lshape cavity backed ground plane is used to enhance the feeding coupling and thus to broaden the bandwidth of this antenna.
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