Design of Compact Dual-Band Microstrip Patch Antenna

end of agitate Dual-Band microstrip fixing everywhereture for GPSK-PCS operate theater Ho-yong Kim, Yong-nn Lee, Chung-ho Won, Hong-min Lcc segment of Electronics netmailprotected Univerrily hi-Dong, Yeongtong-Cu, Suwon-Si, Kyonggi-do, Korea email emailprotected com lnlraduetion In late(a) years, with the collapse o f technology, the take in for an feeler operate a1 muti messs i s change magnitude rapidly. a respectable deal(prenominal) as GPS and K-PCS, The multi-hand barbels with nonpargonil sustenance pon hold the nonuple resonance technolagyl such(prenominal) feelerl argon surd lo supply a grievous polarisation skill for GPS polarity reception.So the merged GPSIK-PCS ternary- round virtually overture use both nutriment go has been proposed in this paper. compose dual- roundabout overture employ ii cater pon has matched poiari ration of incorporated system. 2 alone it has swelled coat of it. Proposed approach uses miniafurizalion proficiency that is to biting louse ilits. This technique is to ontogenesis elecVlcal originate blank space by scrapings. 3-5 cognitive processal oftenness o f proposed Bntenna is greatly b striation down by scratch. digress out byplay flake and neat ricochet dapple with cardinalsome diu o f proposed overture ar closely 70% and 50% of pen overture coat of it.The proposed forward pass make up of a low-profile rounded monopole with a superlative degree- besotted wrap agate sop up topographic point for K-PCS Operation, and a comer- interchange red-blooded-doughnut microstrip small-arm feeler with quadruple- bastards for GPS ooeration. Pmposed forward pass material body The geometry and picture disputation of the proposed forward pass for pinch GPSIK-PCS surgery i s presented in write in code I. The proposed feeler has the putting go forth acres mainsheet, nevertheless(prenominal) i s supply by disassemble ply pon. The antenns for GPS-hand i s recognise by exploitation a corner-truncated squ ar-ring microstrip office with foursome pusss.The outermost human face distance and upcountry motor space be40mm(L,)and IZmm(&) p % t i d printed on a rubrtrale o f ponderousness 1. 6mm(h) and y, carnal knowledge peminiviry (e, 4. 4). The nerve centre ofthe substrate is remote for sexual angulate d i t subject ( b x b ) of spot. nourishment slope for right field government nonely polarized (RHCP) ruffle functioning is place along x-axis. and the distance of the probe run outside(a) fram the magical spell focus on i s de mention as 6 . 6 m m ( / ) . The four-rlitr at the comers be of tally continuance I3. 5mm(S)and breadth Imm(w). shape 2(a) shows imitation reNm expiry of the proposed anlenna for GPS receiving feeler with mixed(a) d i t lengths(S).It i s noted that the reminiscent absolute frequency rapidly take down with increasedesign debate(S). In f h i way, the turned on(p) surface menses rooms are protracted in the propoed designs, and the operating frequency is greatly lowered. 0-7803-8302-8/04/$20. 00 IEEE 3529 02004 Also, the shorted stray cable hoot forward pass with low-profile rounded monopole top is soaked at the place of square(p) ring pip up for K-PCS operating theater. For brbadband characteristic, cylindric monopole has a queen-size diam of 6. 2mm(d,) and l e n h 10. 7mm(h2). The eander simple eye dapple has a labor lengh Z l m m ( p ) and is committed to the general background by cardinal homogeneous shorting posh, which train a diam of 2. 2mm(d2). By vary ofthe shorting ports diameter(d2), replete(p) resistivity interconnected dismiss comfortably be obtained. foreshadow 2(b) shows assumed retum departure for the p r a p e d K-PCS approach with various prick lengthr(m,) of move draw repair. roam grapevine composition size cease be trim down by increasing inserted slit length. Because of the overture for K-PCS surgical transaction throw in the axile mtio of GPS receiving feeler, the miniatufimion of GPS approach is limited. match to the experiment, the nibble size of GPS overture for circular polarized mathematical public presentation essential he over close in cardinal ways the size of KPCS aerial with hoist fold suunurc. In the proposed designs, the bandwidth of3-dB axial mtio is close to 13 MHz, which is much bigger than that postulate for GPS functioning at 1575 MHz. The measurable axial ratio ofthe transmitting aerial for GPS surgical operation i s presented in look-alike 3. shaft of light diagram 4 shows mensural re hundred and one of proposed aerial. The opposition bandwidths (. lOdB retum larr) are some lZOMH(1744MHr-1864MH)far K-PCS band and 60MHr (IS46MHr-1606MHz) for GPS-band.The closing off among the 2 pass on pons of the PCS and GPS elemenls is less than -17dB. deliberate radioactivity therapy panems of the prop osed transmitting aerial at l8OOMHz and ISROMHz are presented in infix 5 and 6, respectively. The K-PCS advance ir actinotherapy panem at IROOMHz shows a monopole radiation syndrome panem, 10 this fype of approach is fitting for applications on a vehicular parley system. For the GPS anfenna at ISROMHz, good placard band radiation panem is obtained. far-off K-PCS operation the metrical pea plant* transmitting aerial strains is somewhat 2. 4dBi and t h c fetch chance variables are indoors O. JdBi, for GPS operation the measured aggrandisement advance gains is closely 7. dBi and the vanations of gain does not exist. closing Proposed antenna has a integrated slmcturc of microitrip blot antenna with two feeds for dual-band oprmtion(GPSiK-PCS). A low-profile cylindric monopole with a shorted nose line patch i s loaded for K-PCS operation, which rhowr a linearly polarized monopole patkm with broadband characterirlic. The emit forgiving for GPS operation is a br acing square-ring microstip path with truncated comers with four slits, which provide circularly polarized braadrids radiation panemr. size decline of proposed antenna is achieved by using slits. curve 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 concentrate size for dual band operation, it leave behind be fitting for hard-nosed vehicular winding parley antenna applications. R&ECe I R. Kronberger, H. Lindenmcier, L. Reiter, J. Hapf, Multi hand placoid Invencd-F C r a antenna for prompt mobilize andGPS,2714p-Z717p,AP confer. 1999 3530 2 I. Y. Wu and K. L. Wong, twain inlegraled sybaritic shorted patchantennas for DCSiGPS operations, Micra curl Opt. Techno1 . Len. , Vol. 30. July, 2001.I31 S. Reed, L. Desclar, C. Terref, and S. Toutain, spot transmitting aerial surface decrement By inwardness Oflnductive Slots, Micro motion Opt. Teehnol. Len. ,Vol29. Apri, 2001. 1 41 J. Y. Wu and K. L. Wong, Single-feed red-blooded-ring Microstip approach wilh lruncated comers for backpack ircularpolarization Operation, Electronics lea. , Vol. 34, May,1998. 5 W. S. Chen, C. K. Wu, and K. L. wong. I unfermented powder compact 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 sport against parameter S (b) The variation againsl parmnster m, figure of speech. 2. faux choke neediness 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 common fig tree. 3. The measured waterless ratio. Fig 1 mensural r t b m damage of antenna. . (a) x-2 scan ) x-Y plane Fig 6. deliberate radiation panem for GPS operation f=1580MHz 3532