May 09, 2014 a new double l shaped multiband patch antenna on a polymer resin material ubstrate. Lshaped slots in a circular patch, a novel broadband dualfrequency design is. Design of dualband dualsense circularly polarised square slot and strips loaded lshaped patch antenna. Jul 26, 2018 frequency reconfigurability is achieved by connecting an additional small patch to the main patch through a pin diode. A new design for singlefeed duallayer dualband patch antenna with linear polarization is presented in this letter. This paper presents coaxial feed rectangular microstrip patch antenna. Wang information engineering college of ncut china. In this paper, a compact two inverted lshape slotted rectangular microstrip monopole patch antenna is presented. Apr 24, 2008 it is based on e shaped patch antenna. A novel feeding technique for a dual band microstrip patch. Pdf in this paper, analysis of double lslot loaded patch antenna is presented. 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. Each corner is cutoff from the main patch through a narrow l shaped cut to get polarization reconfigurability. A new double lshaped multiband patch antenna on a polymer.
This category can be extended to any kind of patch shape that offers two crosspolarized resonant modes. Design of microstrip patch antenna array using dgs for ism. Oct 12, 20 hfss design of rectangular patch antenna using microstrip line feedingedge feeding duration. A stub loaded dual band microstrip patch antenna for wlan. Tentzeris georgia electronic design center school of electrical and computer engineering georgia institute of technology, atlanta, ga 30308, u. 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.
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. 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. Wong and hsu1997 incorporated a ushaped slot in a equilateral triangular microstrip antenna to make it a broadband structure. Paper open access dual frequencies band and enhanced. 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. The proposed antenna comprises a planar rectangular patch element with slotted lshaped rectangular slots which offer quad band. Two l shaped slots are cut on e shaped patch, and two shortpins are inserted between top patch and ground. This article presents a novel singlefeed circularly polarized patch antenna for dualband 2. Singlefeed inverted lshaped slotted rectangular microstrip. 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 size of antenna is reduced by cutting lshaped slot. The low frequency unit consists of a pair of printing vibrators.
Design and optimization of double lslot square patch antenna. Design of a dual polarized ultra wideband dual feed dumbbell patch antenna with splattered ring ebg for ultra high speed communications. Also, an lprobe is used to realize matching between the feed system and radiating system in a wide frequency range. 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. This paper presents a new dual frequency design for microstrip patch antennas. An sma connector was connected to the end of the microstrip feed line. Bandwidth enhancement of patch antenna with anisotropic. Design analysis of a cross slot patch antenna for hotspot. Pdf singlefeed inverted lshaped slotted rectangular. A new dualband microstrip antenna with ushaped slot and. A design of singlefeed dualfrequency patch antennas with different polarizations and radiation patterns is proposed. In this double l shaped slot is formed on square patch. Proposed design of rectangular patch antenna dual frequency circularly polarized microstrip antenna ira joshi, abhishek joshi, r.
A single probe feed square microstrip patch antenna with reduced size has been proposed. A novel reconfigurable microstripfed patch antenna with polarization agility in either of two bands is proposed in this communication. Hejazi, and nihad dib abstracttwo new designs of dual frequency coplanar waveguide. Broadband cp patch antenna with lshaped ground plane for 2. This research proposes a dualfrequency circularly polarized truncated square aperture patch antenna with slant stripline and l shaped slot for wlan applications. 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. 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. Design of singlefeed dualfrequency patch antenna for gps.
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. Frequency reconfigurability is achieved by connecting an additional small patch to the main patch through a pin diode. 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. High frequency triband patch antenna with enhanced bandwidth.
Two lshaped slots are cut on eshaped patch, and two shortpins are. A dual frequency microstrip patch antenna for highprecision gps applications. 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. The antenna utilizes l shaped slot in the radiator in order to achieve circularly polarized radiation pattern. An lshaped slot circularly polarized patch antenna for. Broadband cp patch antenna with l shaped ground plane for 2. Research paper analysis and design of circular microstrip. In the second technique, use has been made of the study by 6 and. The impedance bandwidth can be tuned by changing the ground plane geometry parameters length andor its width. A circularpolarized patch antenna with compact size operating at 2.
Performance characterization of dualband microstrip fractal. Most of the other dualfrequency patch antennas found in the literature can be subdivided into 2 multi patch dual frequency antennas, and 3 reactive2yzoaded dualfrequency patch antennas. Dualfrequency circularly polarized truncated square aperture. 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. 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.
A new design of a dualfrequency antenna printed on magnetic. A novel reconfigurable microstrip patch antenna with. Liu information engineering college of ncut china abstractthis paper describes a novel dual band patch antenna on organic magnetic substrate for wireless local area. 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. Broadband circular polarized antenna with l shaped patch for 2.
Hfss design of rectangular patch antenna using microstrip line feedingedge feeding duration. A jiashaped artistic patch antenna for dualband circular. The basics of patch antennas, updated orban microwave. A wideband twindiamondshaped circularly polarized patch. A simple structure concentric annularring slot dualband circularly polarized cp microstrip antenna operating at ism band 2. A microstrip patch antenna including a ground plane base, an lshaped feed structure and a laminate structure is disclosed herein. The antenna achieves dualband operation by digging two concentric annularring slots on the ground. With the use of an lstrip microstrip line for feeding the proposed antenna, the. A novel feed arrangement for a wideband planar invertedl antenna has been proposed chen and chia, 2001 and dual frequency operation of the nar. Enhancing the bandwidth of microstrip patch antennas. A narrow l shaped microstrip antenna is fed at the corner using a. Dual frequency reconfigurable patch antenna for s band application. A design of dual broadband antenna is proposed in this paper.
Pdf lshaped microstrip antenna for wideband researchgate. Lu2003 analyzed a circular patch antenna and its arrays with a pair of lshaped slots for broadband dual frequency operation. 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. Cpwfed monopole antenna with l shaped and stair shape slot. Design of an lshape slanted dualband microstrip patch antenna. Dual frequency circularly polarized microstrip antenna for. Conclusion a new x shaped microstrip line feed patch antenna has been designed and evaluated in this work. In reference 6, the patch antenna is coupled through a cross slot of equal slot lengths. Inverted lshaped patch is designed on the top of the substrate and a. A novel and compact dual band dual sense circularly polarized microstrip patch antenna with single coaxial feed has been reported in the present work.
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. Broadband dualfrequency operation of circular patch antennas and. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Patch antennas have also been designed for the operation in vhfuhf bands. Singlefeed dualfrequency rectangular microstrip antenna with pair of stepslots, electronics letters, vol. 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. The antenna can be designed for applicable in cband space. Dualfrequency circularly polarized truncated square. A new dualfrequency broadband lslot mixed eshaped patch antenna is presented.
Broadband circular polarized antenna with lshaped patch for 2. 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. Besides, the meandered feed patch is also used for good match. The square ring slot is located within a square patch microstrip antenna with perturbation segments. 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. When using coaxial feed, the probe used for feeding is stretched into the resonant cavity to motivate the patch antenna.
Design of miniaturized dualband microstrip antenna for. With further study and optimization of dual band microstrip antenna 2 it has. The antenna achieves a symmetrical radiation pattern around zenith. A new double lshaped multiband patch antenna on a polymer resin material ubstrate. 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 design graphs are then used to compute the dimensions of a rectangular patch and feed network for a dualfrequency antenna for use at 1. A new dualfrequency broadband lslot mixed eshaped patch. Singlefeed duallayer dualband eshaped and uslot patch. Two lshaped slots are cut on eshaped patch, and two shortpins are inserted between top patch and ground. Vichien dualfrequency patch antenna with a rectangular notch, electronics letters.
It is observed that various antenna parameters are obtained as a function of frequency. 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. Us8854265b1 lshaped feed for a matching network for a. China abstracta novel twindiamondshaped antenna is presented for. 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 dual broadband antenna in mobile communication system. 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. Lshaped radiator simulated lshaped radiator simulated the return loss vs. In this the performance of microstrip patch antenna is investigated by using of lshaped slot and by applying dgs defected ground structure. Each corner is cutoff from the main patch through a narrow lshaped cut to get polarization reconfigurability. In the antenna design, the parameters were optimized and the wlanenabled dualfrequency 2. Design of microstrip patch antenna array using dgs for. A new dual frequency broadband l slot mixed e shaped patch antenna is presented. Zheng beijing electromechanical engineering institute china y. 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. Wong and hsu1997 incorporated a u shaped slot in a equilateral triangular microstrip antenna to make it a broadband structure. 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. Two l shaped slots are cut on eshaped patch, and two shortpins are inserted between top patch and ground.
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. In this the performance of microstrip patch antenna is investigated by using of l shaped slot and by applying dgs defected ground structure. The dual band performance is achieved by e shaped and uslot patches. Design and measurement of selfmatched dualfrequency. Performance characterization of dualband microstrip. Fractal antenna geometry is designed using different sizes of the x slots. 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. 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. The antenna design is made on a fr4 substrate having dielectric constant of 4. A dgs defected ground structure is formed in ground plane for improvement of bandwidth. And on the angular positions with 45 degrees inclined of each annular slot, two bent structures are loaded to.
The proposed dual band antenna consists of a rectangular shaped patch element embedded with two l shaped slots and stairshape slot in the. The prototype of the antenna is fabricated and is fed by a 50. Design of miniaturized dualband microstrip antenna for wlan. Wang information engineering college of ncut china j. In this feeding technique, the inner conductor of the coaxial connector extends. For achieving the cp performance, a serial feed configuration of the microstrip feedline is selected. A new design for single feed dual layer dual band patch antenna with linear polarization is presented in this letter. Design and optimization of double lslot square patch. This research proposes a dualfrequency circularly polarized truncated square aperture patch antenna with slant stripline and lshaped slot for wlan applications. In this paper, a compact two inverted lshape slotted rectangular. In this double lshaped slot is formed on square patch. In addition, the impedance and axial ratio bandwidths are enhanced by using the proximitycoupled feed. Lu2003 analyzed a circular patch antenna and its arrays with a pair of l shaped slots for broadband dual frequency operation. Dual frequency circularly polarized microstrip antenna.
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. The dual frequency operation of the antenna is achieved by using a ushaped. 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. Since the two antennas are joined together in parallel, the. 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. Figure 1 depicts the geometry of the proposed dual frequency circularly polarized antenna. A novel concentric annularring slot dualband circularly. A proposed microstrip patch antenna array is shown in figure 5. Broadband circular polarized antenna with microstripfed and parasitic patch. The concept used in calculating resonant frequency.
A novel feeding technique for a dual band microstrip patch antenna. Design and measurement of selfmatched dualfrequency coplanar waveguidefedslot antennas amjad a. The proposed dual frequency antenna is excited by a single probe feed, and the feed position is on the rectangular. A microstrip patch antenna including a ground plane base, an l shaped feed structure and a laminate structure is disclosed herein. In 4, dual band lshaped had been apply in microstrip patch antenna. Dual band x shape microstrip patch antenna for satellite.
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. The dualband performance is achieved by eshaped and uslot patches. Matlab of the proposed semicircular microstrip patch antenna with lshaped slot are. Introduction this article introduces the basic concepts of patch antennas. To match the feed impedance with the antenna impedance, slots of various shapes are used. Slot antenna is advantageous over patch antenna as it provide greater bandwidth due to bidirectional radiation as in antenna2 structure.
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