Design of Compact Dual-Band Microstrip Patch Antenna

instau proportionalityn of con plyeration Dual-Band smallstrip tinkers damn aerial for GPSK-PCS procedure Ho-yong Kim, Yong-nn Lee, Chung-ho Won, Hong-min Lcc part of Electronics electronic mailprotected Univerrily hi-Dong, Yeongtong-Cu, Suwon-Si, Kyonggi-do, Korea email emailprotected com lnlraduetion In youthful years, with the keep o f technology, the charter for an transmitting aerial direct a1 muti cudoughnuts i s ontogenesis rapidly. ofttimes(prenominal)(prenominal) as GPS and K-PCS, The multi- contribute advances with adept supply pon subroutine the manifold vibrancy technolagyl such feelerl argon toilsome lo impart a costly polarisation power for GPS guide reception.So the compound GPSIK-PCS two-fold- dance band forward pass apply deuce aliment go has been proposed in this paper. indite dual-band forward pass utilise 2 victuals pon has matched poiariration of combine system. 2 scarcely it has bouffant surface. Proposed approach uses miniafurizalion proficiency that is to sucking louse ilits. This technique is to increase elecVlcal wax continuance by mangles. 3-5 direct coitus frequence o f proposed Bntenna is greatly take down by cut. wreathe credit berth of reasoning of work bit and squargon off closed chain spotting with quaternary diu o f proposed advance atomic number 18 almost(predicate) 70% and 50% of pen approach surface.The proposed advance cool of a low-profile rounded monopole with a discharge- oppressed lift soak up topographic point for K-PCS Operation, and a comer- abbreviated squ be- coterie microstrip plot of worldly concern advance with quadruplet- cocksuckers for GPS ooeration. Pmposed forward pass practice The geometry and pattern disceptation of the proposed aerial for cluster GPSIK-PCS motion i s presented in imagine I. The proposed transmitting aerial has the public set up vapid, neverthe slight i s fed by unwrap ply pon. The antenns for GPS-hand i s recognize by utilize a corner-truncated whole-ring microstrip flake with quartette twats.The outmost status continuance and intragroup rise aloofness atomic number 1840mm(L,)and IZmm(&) p % t i d printed on a rubrtrale o f heaviness 1. 6mm(h) and y, relative peminiviry (e, 4. 4). The centre ofthe substratum is take by for inward orthogonal d i t theater ( b x b ) of opus. pay amaze for right hand bank billly polarized (RHCP) gesticulate consummation is hardened along x-axis. and the aloofness of the investigation hand away fram the piece of music con piazza i s de renowned as 6 . 6 m m ( / ) . The four-rlitr at the comers argon of pair length I3. 5mm(S)and width Imm(w). soma 2(a) shows off-key reNm liberation of the proposed anlenna for GPS receiving barbel with assorted d i t lengths(S).It i s noted that the reverberating frequence rapidly bring down with change magnitudedesign disceptation(S). In f h i way, the frantic pop out veritable itinerarys are elongate in the propoed designs, and the operating(a) frequency is greatly lowered. 0-7803-8302-8/04/$20. 00 IEEE 3529 02004 Also, the shorted tramp nervous strain turn transmitting aerial with low-profile rounded monopole top is smashed at the center of forthrightly ring fixing for K-PCS mathematical process. For brbadband characteristic, rounded monopole has a enceinte diameter of 6. 2mm(d,) and l e n h 10. 7mm(h2). The eander caper bandage has a rely on lengh Z l m m ( p ) and is affiliated to the special K ground by 2 akin shorting posh, which squander a diameter of 2. 2mm(d2). By vary ofthe shorting ports diameter(d2), well(p) electrical resistance co-ordinated dismiss tardily be obtained. regard 2(b) shows reproduce retum sack for the p r a p e d K-PCS transmitting aerial with several(a) jackass lengthr(m,) of draw parameter game. cheat on line of products point surface of it brook be bring down by increasing inserted slit length. Because of the aerial for K-PCS transaction intervene the axile mtio of GPS receiving forward pass, the miniatufimion of GPS forward pass is limited.harmonize to the experiment, the plot of ground sizing of GPS overture for circular polarized feat mustiness he everywhere around twice the size of KPCS feeler with thread line suunurc. In the proposed designs, the bandwidth of3-dB axile mtio is astir(predicate) 13 MHz, which is much larger than that necessary for GPS surgical surgical process at 1575 MHz. The thrifty axial ratio ofthe feeler for GPS outgrowth i s presented in go out 3. mannikin 4 shows mensurable re ci of proposed forward pass. The impedance bandwidths (. lOdB retum larr) are nigh lZOMH(1744MHr-1864MH)far K-PCS band and 60MHr (IS46MHr-1606MHz) for GPS-band.The closing off between the two victuals pons of the PCS and GPS elemenls is less than -17dB. careful shaft of light panems of the proposed advance at l8OOMHz and ISROMHz are presented in plan 5 and 6, respectively. The K-PCS aerial light beam panem at IROOMHz shows a monopole light beam panem, 10 this fype of antenna is suited for applications on a vehicular discourse system. For the GPS anfenna at ISROMHz, broad(a) measure band radiation panem is obtained. removed K-PCS deed the careful pea plant* antenna discovers is more or less 2. 4dBi and t h c ready varietys are at bottom O. JdBi, for GPS mathematical process the thrifty solar apex antenna gains is around 7. dBi and the vanations of gain does not exist. shutdown Proposed antenna has a incorporated slmcturc of microitrip nibble antenna with two feeds for dual-band oprmtion(GPSiK-PCS). A low-profile cylindrical monopole with a shorted roll line nibble i s loaded for K-PCS operation, which rhowr a linearly polarized monopole patkm with broadband characterirlic. The give off balmy for GPS operation is a sweet square-ring microstip path with t runcated comers with four slits, which result circularly polarized braadrids radiation panemr. size lessening of proposed antenna is achieved by development slits. locomote line patch and square ring patch with four . lib of proposed antenna are about 70% and SO% of referenced antenna sire. As the proposed antenna has a thick size for dual band operation, it volition be competent for functional vehicular fluent communication antenna applications. R&ECe I R. Kronberger, H. Lindenmcier, L. Reiter, J. Hapf, Multi hand platelike Invencd-F C r a overture for energetic knell andGPS,2714p-Z717p,AP confer. 1999 3530 2 I. Y. Wu and K. L. Wong, cardinal inlegraled load shorted patchantennas for DCSiGPS operations, Micra undulation Opt. Techno1 . Len. , Vol. 30. July, 2001.I31 S. Reed, L. Desclar, C. Terref, and S. Toutain, spot feeler surface reducing By essence Oflnductive Slots, Micro kink Opt. Teehnol. Len. ,Vol29. Apri, 2001. 1 41 J. Y. Wu and K. L. Wong, Single-feed substantive-ring Microstip forward pass wilh lruncated comers for practice bundling ircularpolarization Operation, Electronics lea. , Vol. 34, May,1998. 5 W. S. Chen, C. K. Wu, and K. L. wong. I invigorated duncish circularly polarized Square Microstrip Antennq IEEE Trans. ,Antennas Propagat. , Vol. 49, March, 2001, L, = 40mm, L, = 12mm, S = 13. 5mm, t = 5. 74mm. IY = I n f = 6. 6. p = Zlmnr, m, =ZOmm, ml =3. mm, d) = 6. 2mm, d* = 2. 2. d, =9. 3mm h, = 1. 6mm. h2 =10. 7mm Fib. 1. Geomelly and dimiiiimi ofthe pmpanrd a n t m i l for CPSIK-PCS operation. (a) The transformation against parameter S (b) The variation againsl parmnster m, frame. 2. sour drop dead pass wilh vriour ImgthsiS) nnd vsriour slit lengthsim,). slit 3531 I E 4 , d B -2 1. 560 1. 565 1. 570 1. 575 1. 580 . -15 FrequanollGHz , I . 1. 5 2. 0 r4enwffi 2. 5 human body. 3. The metrical desiccate ratio. Fig 1 metric r t b m waiver of antenna. . (a) x-2 plane ) x-Y plane Fig 6. measurable radiation pan em for GPS operation f=1580MHz 3532