Besides, the meandered feed patch is also used for good match. Dual frequency circularly polarized microstrip antenna. The size of antenna is reduced by cutting lshaped slot. In this paper, a compact two inverted lshape slotted rectangular. Patch antennas have also been designed for the operation in vhfuhf bands. Broadband circular polarized antenna with microstripfed and parasitic patch. The dual frequency operation of the antenna is achieved by using a ushaped. A jiashaped artistic patch antenna for dualband circular. 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 bands.
The antenna achieves dualband operation by digging two concentric annularring slots on the ground. A microstrip patch antenna including a ground plane base, an l shaped feed structure and a laminate structure is disclosed herein. A new dualfrequency broadband lslot mixed eshaped patch. The low frequency unit consists of a pair of printing vibrators. A dual frequency microstrip patch antenna for highprecision gps applications. Octagon shaped microstrip patch antenna for dual band. A novel feed arrangement for a wideband planar invertedl antenna has been proposed chen and chia, 2001 and dual frequency operation of the nar.
A matching network is formed by a clearance member of the laminate structure around a pin and a stub of the lshaped feed structure on the bottom surface in which the clearance member around the pin effectively decreases shunt inductance and reduces a series. A new dualfrequency broadband lslot mixed eshaped patch antenna is presented. Us8854265b1 lshaped feed for a matching network for a. In 4, dual band lshaped had been apply in microstrip patch antenna. Frequency reconfigurability is achieved by connecting an additional small patch to the main patch through a pin diode. A narrow l shaped microstrip antenna is fed at the corner using a. Slot antenna is advantageous over patch antenna as it provide greater bandwidth due to bidirectional radiation as in antenna2 structure. The square ring slot is located within a square patch microstrip antenna with perturbation segments. A circularpolarized patch antenna with compact size operating at 2. Singlefeed dualfrequency rectangular microstrip antenna with pair of stepslots, electronics letters, vol. Figure 1 depicts the geometry of the proposed dual frequency circularly polarized antenna. A novel feeding technique for a dual band microstrip patch antenna.
Liu information engineering college of ncut china abstractthis paper describes a novel dual band patch antenna on organic magnetic substrate for wireless local area. A design of dual broadband antenna is proposed in this paper. Fractal antenna geometry is designed using different sizes of the x slots. In this the performance of microstrip patch antenna is investigated by using of l shaped slot and by applying dgs defected ground structure. Enhancing the bandwidth of microstrip patch antennas. The proposed antenna array consists on a single substrate. The prototype of the antenna is fabricated and is fed by a 50.
The advantages of the coaxial feed is that the feeding points can be selected at any desired position of the patch, and the coaxial feeder located in below the ground plane and the patch antenna located in the ground floor avoid the effect of the feeder on the antenna radiation. A wideband twindiamondshaped circularly polarized patch. A novel and compact dual band dual sense circularly polarized microstrip patch antenna with single coaxial feed has been reported in the present work. A proposed microstrip patch antenna array is shown in figure 5.
Design and optimization of double lslot square patch antenna. Figure 7 radiation pattern of the rectangular patch antenna using inset l shaped feed with dual l slots on the ground plane the parameters given in table 2 are fixed, variation of return loss as a function of frequency for different value of the length notch of the inset l shaped feed w fl is shown in figure 8. This research proposes a dual frequency circularly polarized truncated square aperture patch antenna with slant stripline and l shaped slot for wlan applications. A design of singlefeed dualfrequency patch antennas with different polarizations and radiation patterns is proposed. Proposed design of rectangular patch antenna dual frequency circularly polarized microstrip antenna ira joshi, abhishek joshi, r. Dual frequency reconfigurable patch antenna for s band application.
With further study and optimization of dual band microstrip antenna 2 it has. Figure 7 radiation pattern of the rectangular patch antenna using inset lshaped feed with dual l slots on the ground plane the parameters given in table 2 are fixed, variation of return loss as a function of frequency for different value of the length notch of the inset lshaped feed w fl is shown in figure 8. Lastly, tshaped parasitic elements effect a dualband frequency for the microstrip antenna 5, shorted parasitic element for dualband monopole antenna 6, novel parasiticelement at printed antenna 7, and parasitic element at wlan yagiuda. A design of dual broadband antenna in mobile communication system. Each corner is cutoff from the main patch through a narrow l shaped cut to get polarization reconfigurability. This research proposes a dualfrequency circularly polarized truncated square aperture patch antenna with slant stripline and lshaped slot for wlan applications. A stub loaded dual band microstrip patch antenna for wlan. Performance characterization of dualband microstrip.
Design and measurement of selfmatched dualfrequency. The antenna utilizes l shaped slot in the radiator in order to achieve circularly polarized radiation pattern. A novel reconfigurable microstripfed patch antenna with polarization agility in either of two bands is proposed in this communication. This paper presents a new dual frequency design for microstrip patch antennas. Since the two antennas are joined together in parallel, the. Two l shaped slots are cut on eshaped patch, and two shortpins are inserted between top patch and ground.
The authors in 8 present the design of a planar lshaped monopole antenna fed by a microstrip line, which utilizes parasitic coupling between the driven elements and a. Design of microstrip patch antenna array using dgs for. The antenna structure is composed of two stacked patches, in which the top is. In the antenna design, the parameters were optimized and the wlanenabled dual frequency 2. The impedance bandwidth can be tuned by changing the ground plane geometry parameters length andor its width. Lu2003 analyzed a circular patch antenna and its arrays with a pair of l shaped slots for broadband dual frequency operation. Paper open access dual frequencies band and enhanced. Each corner is cutoff from the main patch through a narrow lshaped cut to get polarization reconfigurability. We use a simple rectangular, half wave long, probefed patch operating in its fundamental mode as an example. Design of compact dualfrequency microstrip antenna for gsm handsets 145 the value of input impedance at both the resonances of this dual. Broadband circular polarized antenna with lshaped patch for 2. Broadband dualfrequency operation of circular patch antennas and. A microstrip patch antenna including a ground plane base, an lshaped feed structure and a laminate structure is disclosed herein. Lshaped slots in a circular patch, a novel broadband dualfrequency design is.
The proposed dual frequency antenna is excited by a single probe feed, and the feed position is on the rectangular. Design of an lshape slanted dualband microstrip patch antenna. Design of miniaturized dualband microstrip antenna for wlan. This article presents a novel singlefeed circularly polarized patch antenna for dualband 2. Apr 24, 2008 it is based on e shaped patch antenna.
In this the performance of microstrip patch antenna is investigated by using of lshaped slot and by applying dgs defected ground structure. A simple structure concentric annularring slot dualband circularly polarized cp microstrip antenna operating at ism band 2. The present invention is to provide a planar double lshaped antenna operable at two different frequency ranges comprising a patch line printed on a top of a dielectric substrate and having one end formed as a signal feed point. A series feed configuration with an lshaped strip for a narrow squarering slot antenna has been applied to achieve 3 db ar bandwidth of more than 6% 6, but the capacitance value between the bent strip and ground is very critical to obtain a low axial ratio and good impedance matching 7. Pdf singlefeed inverted lshaped slotted rectangular. Matlab of the proposed semicircular microstrip patch antenna with lshaped slot are. The advantages of the coaxial feed is that the feeding points can be selected at any desired position of the patch, and the coaxial feeder located in below the ground. A new design for single feed dual layer dual band patch antenna with linear polarization is presented in this letter. This research proposes a dualfrequency circularly polarized truncated square aperture patch antenna with slant stripline and l shaped slot for wlan applications. In 4, design of an optimized dual frequency patch antenna for c band focusing on 5 ghz and 8 ghz frequency band has been presented. Microstrip patch antenna experimentally optimize antenna parameters and decreases introducedthe return loss up to 35db for the frequency range to operate for bluetooth antenna in frequency range 2. A novel concentric annularring slot dualband circularly.
China abstracta novel twindiamondshaped antenna is presented for. Broadband circular polarized antenna with l shaped patch for 2. High frequency triband patch antenna with enhanced bandwidth. Pdf in this paper, analysis of double lslot loaded patch antenna is presented. Inverted lshaped patch is designed on the top of the substrate and a. The antenna design is made on a fr4 substrate having dielectric constant of 4. Jul 26, 2018 frequency reconfigurability is achieved by connecting an additional small patch to the main patch through a pin diode. A new dualband microstrip antenna with ushaped slot and.
Vichien dualfrequency patch antenna with a rectangular notch, electronics letters. The antenna achieves a symmetrical radiation pattern around zenith. Broadband cp patch antenna with lshaped ground plane for 2. In this paper, a dual frequency resonance antenna is analysed by introducing lshaped slot in a semi circular patch, different parametric studies have allows and the results in terms of return loss and radiation pattern are given. Wang information engineering college of ncut china j. Zheng beijing electromechanical engineering institute china y. A matching network is formed by a clearance member of the laminate structure around a pin and a stub of the l shaped feed structure on the bottom surface in which the clearance member around the pin effectively decreases shunt inductance and reduces a series. Design of compact dualfrequency microstrip antenna for gsm handsets 145 the value of input impedance at both the resonances of this dualfrequency msa was measured to be 43. The basics of patch antennas, updated orban microwave. The key idea of generating dual band circular polarisation cp is the integration of a square patch with corner truncation and a smaller concentric circular patch with double slits. The proposed dual band antenna consists of a rectangular shaped patch element embedded with two l shaped slots and stairshape slot in the. Dual band x shape microstrip patch antenna for satellite. Hejazi, and nihad dib abstracttwo new designs of dual frequency coplanar waveguide.
In this feeding technique, the inner conductor of the coaxial connector extends. The antenna can be designed for applicable in cband space. In this double l shaped slot is formed on square patch. A new design for singlefeed duallayer dualband patch antenna with linear polarization is presented in this letter. Singlefeed inverted lshaped slotted rectangular microstrip. Introduction this article introduces the basic concepts of patch antennas. The dualband performance is achieved by eshaped and uslot patches. For achieving the cp performance, a serial feed configuration of the microstrip feedline is selected. Dualfrequency circularly polarized truncated square aperture.
Lu2003 analyzed a circular patch antenna and its arrays with a pair of lshaped slots for broadband dual frequency operation. Citeseerx document details isaac councill, lee giles, pradeep teregowda. An lshaped slot circularly polarized patch antenna for. Two lshaped slots are cut on eshaped patch, and two shortpins are. A novel combination technique to achieve the optimization of both the element geometry and array layout of multiband bts array antennas has been introduced in 18. However, the complexity of two feeding ports can be adjusted into one. In this double lshaped slot is formed on square patch. In the antenna design, the parameters were optimized and the wlanenabled dualfrequency 2. Broadband cp patch antenna with l shaped ground plane for 2. A new dual frequency broadband l slot mixed e shaped patch antenna is presented. Wong and hsu1997 incorporated a ushaped slot in a equilateral triangular microstrip antenna to make it a broadband structure.
A new double lshaped multiband patch antenna on a polymer resin material ubstrate. Research paper analysis and design of circular microstrip. When using coaxial feed, the probe used for feeding is stretched into the resonant cavity to motivate the patch antenna. Geometries of a shorted rectangular patch antenna with an lshaped or a folded slit for dualfrequency operation 6 a shorted rectangular patch with an lshaped or a folded slit 32,33 is. A dgs defected ground structure is formed in ground plane for improvement of bandwidth. Design and measurement of selfmatched dualfrequency coplanar waveguidefedslot antennas amjad a. And on the angular positions with 45 degrees inclined of each annular slot, two bent structures are loaded to. Lshaped radiator simulated lshaped radiator simulated the return loss vs. An sma connector was connected to the end of the microstrip feed line. Dualfrequency circularly polarized truncated square.
A novel reconfigurable microstrip patch antenna with. A new double lshaped multiband patch antenna on a polymer. The design graphs are then used to compute the dimensions of a rectangular patch and feed network for a dualfrequency antenna for use at 1. Performance characterization of dualband microstrip fractal. This paper proposed a novel patch antenna loaded with lshaped slots and opposite corner of square patch is trimmed to achieve dual band operation at 3. Two lshaped slots are cut on eshaped patch, and two shortpins are inserted between top patch and ground. The antenna consist of l shaped and e shaped radiating elements to generate two resonant modes for dualband operation.
Cpwfed monopole antenna with l shaped and stair shape slot. The proposed antenna comprises a planar rectangular patch element with slotted lshaped rectangular slots which offer quad band. A wideband twindiamondshaped circularly polarized patch antenna with gapcoupled feed xuehui li, xueshi ren, yingzeng yin, lu chen, and zedong wang national laboratory of science and technology on antennas and microwaves, xidian university, xian, shaanxi 710071, p. Hfss design of rectangular patch antenna using microstrip line feedingedge feeding duration. May 09, 2014 a new double l shaped multiband patch antenna on a polymer resin material ubstrate. The concept used in calculating resonant frequency. In addition, the impedance and axial ratio bandwidths are enhanced by using the proximitycoupled feed.
The dual band performance is achieved by e shaped and uslot patches. Design and optimization of double lslot square patch. Dual frequency circularly polarized microstrip antenna for. Two l shaped slots are cut on e shaped patch, and two shortpins are inserted between top patch and ground. This category can be extended to any kind of patch shape that offers two crosspolarized resonant modes. Design of a dual polarized ultra wideband dual feed dumbbell patch antenna with splattered ring ebg for ultra high speed communications. Wong and hsu1997 incorporated a u shaped slot in a equilateral triangular microstrip antenna to make it a broadband structure. After calculating the various parameters such propagation constant in free space and in dielectric,radius of the patch and effective radius the antenna impedance is matched to 50 ohm of coaxial feed. With the use of an lstrip microstrip line for feeding the proposed antenna, the. Design of miniaturized dualband microstrip antenna for. Design of dualband dualsense circularly polarised square slot and strips loaded lshaped patch antenna.
The present invention is to provide a planar double l shaped antenna operable at two different frequency ranges comprising a patch line printed on a top of a dielectric substrate and having one end formed as a signal feed point. Singlefeed duallayer dualband eshaped and uslot patch. This work present a stub loaded dual band microstrip patch antenna for wireless local area network wlan. Pdf lshaped microstrip antenna for wideband researchgate. For the feed network, two transmission lines are used to connect the two edge feeds to an open circuit stub to match the antenna at the two frequencies. Design of microstrip patch antenna array using dgs for ism. Design of tshaped patch antenna the tshaped patch is inserted at the top of the substrate by using the dual feed line structure and it is found that the bandwidth. This paper presents coaxial feed rectangular microstrip patch antenna. A series feed configuration with an l shaped strip for a narrow squarering slot antenna has been applied to achieve 3 db ar bandwidth of more than 6% 6, but the capacitance value between the bent strip and ground is very critical to obtain a low axial ratio and good impedance matching 7. In this paper, a compact two inverted lshape slotted rectangular microstrip monopole patch antenna is presented. A tshaped planar monopole antenna with two asymmetrical horizontal strips to produce the lower and upper resonant modes is reported in 7 to cover the 2. Conclusion a new x shaped microstrip line feed patch antenna has been designed and evaluated in this work. Tentzeris georgia electronic design center school of electrical and computer engineering georgia institute of technology, atlanta, ga 30308, u. The feeding technique, the adjusted slotted patch shape and the dimensions of the antenna made it possible to modify the acceptable reflection coefficient and characteristics of the radiation pattern in the expected frequency.
In this paper, a proposed antenna design with cpw feed technology has been used to achieve dual band operation for both wlan and wimax bands. Design of singlefeed dualfrequency patch antenna for gps. In reference 6, the patch antenna is coupled through a cross slot of equal slot lengths. It is observed that various antenna parameters are obtained as a function of frequency. When the two operating frequencies are far apart, a dualfrequency patch structure can be conceived to avoid the use of separate antennas. Probably one of the most researched areas in the history of microstrip patch technology has been how to improve the impedance bandwidth of this antenna such that it can be utilized in many more applications. A design of single feed dual frequency patch antennas with different polarizations and radiation patterns is proposed. Design analysis of a cross slot patch antenna for hotspot. A single probe feed square microstrip patch antenna with reduced size has been proposed. Wang information engineering college of ncut china. To match the feed impedance with the antenna impedance, slots of various shapes are used. In this paper, a dual frequency resonance antenna is analysed by introducing l shaped slot in a semi circular patch, different parametric studies have allows and the results in terms of return loss and radiation pattern are given. Bandwidth enhancement of patch antenna with anisotropic. A novel feeding technique for a dual band microstrip patch.
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