A Study of Small Built-in Antenna for Hand held Terminal

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1 A Study of Smll Built-in Antenn for Hnd held Terminl

2 6 9 IMT-2 Interntionl Mobile Telecommunictions-2 2GHz /4 PDA Personl Digitl Assistnt 2 FDTD Finite Difference Time Domin method 6 FDTD mm 2.25GHz 2.1%

3 PDA GHz i

4 PDC Personl Digitl Cellulr system kbps PHS Personl Hndy-phone System 32 64kbps 1 IMT-2 Interntionl Mobile Telecommunictions 2 384kbps IMT GHz MHz MHz 19MHz FDD Frequency Division Duplex 2Mbps 2MHz IMT-2 2Mbps 144kbps PDC IMT 2 MMAC PHS 2.4GH 19GH LAN LAN 1-1 2

5 Web b [1][2] V H XPR V XPR = 1 H XPR 9MHz 9dB [3] 6dB XPR IMT-2 (2GHz ) 1-2 3

6 b 1-3 [4] 1-4 [5] 1-4 b [6] /4 [7] IMT-2 2GHz FDTD [8][9][1] XY ()dipole ntenn y z x (b) /4 monopole ntenn 1-4 4

7 >6 [11][12] [13] FDTD 4 5

8 2. 3 IMT-2 2GHz / PDA PDA(Personl Digitl Assistnt) =14mm 82mm/4 2-1 PDA AP1 BP1 2-2 /4 2GHz 15mm 1/ mm 2-3 AP1 2-4 PDA AP2 BP db -1dB 1/1 6

9 -2dB 1/1-1dB 2-6() PDA AP1 BP1 2-6(b) PDA AP2 BP2 4 [deg] 2-7 [14] r= [deg] xy [15] P Pr P π 2π ve = π 2π ( (, ) r (, )) P θ φ P θ φ dφdθ φθ dφdθ V H >6[deg] AP1 AP =27[deg] PDA AP1 AP2 7

10 AP1 AP2 BP2 /4 monopole ntenn d c Ground Plne y z x AP1 b BP1 2-1 PDA b =14 b=82 c=36 d=7 [mm] AP1 8

11 /4 monopole ntenn c d Ground Plne y z x AP2 b BP2 2-4 PDA b =14 b=82 c=36 d=7 [mm] AP1 BP () AP2 BP b 2-6 9

12 Phntom y () Model P-A z x (b) Model P-B 2-7 [deg] 3[deg] 6[deg] 9[deg] 2-8 1

13 Pttern Averge Gin [dbd] AP1-V AP1-H BP1-V BP1-H Inclintion Angle [deg] () Pttern Averge Gin [dbd] AP2-V AP2-H BP2-V BP2-H Inclintion Angle [deg] (b)

14 [dbd] [dbd] [deg.] () Inclintion Angle [deg] 3 [deg] 6 [deg] 9[deg] 18 [deg.] (b) 2-12 AP1 xy [dbd] [dbd] [deg.] () Inclintion Angle [deg] 3 [deg] 6 [deg] 9[deg] 18 [deg.] (b) 2-13 AP2 xy 12

15 [dbd] [dbd] [deg.] () Inclintion Angle [deg] 3 [deg] 6 [deg] 9[deg] 18 [deg.] (b) 2-14 BP1 xy -1 [dbd] [dbd] [deg.] () Inclintion Angle [deg] 3 [deg] 6 [deg] 9[deg] 18 [deg.] (b) 2-15 BP2 xy 13

16 PDA =128mm 44mm/ AC1 BC /4 2GHz 15mm 1/ mm 2-18 AC2 BC /4 2-2 PDA AC1 AC2 BC1 BC2-1dB 1 2mm 2GHz [deg] V H 2-21 >6[deg] AC1 AC =27[deg] AC1,AC2 14

17 BC1 BC2 PDA Model B Model A Model A PDA /4 monopole ntenn c Ground Plne y 7 d b/2 15 z x AC1 b BC1 b =128 b=44 c=38 d=7 [mm] /4 Monopole Antenn c Ground Plne y 7 d d 15 AC2 b BC2 z x Unit [mm] b =128 b=44 c=37 d=7 [mm]

18 AC1 BC1-3 AC2 BC () b 2-2 Pttern Averge Gin [dbd] AC1-V AC1-H BC1-V BC1-H Pttern Averge Gin [dbd] AC2-V AC2-H BC2-V BC2-H Inclintion Angle [deg] () Inclintion Angle [deg] (b)

19 [dbd] [dbd] [deg.] () Inclintion Angle [deg] 3 [deg] 6 [deg] 9[deg] 18 [deg.] (b) 2-22 AC1 xy [dbd] [dbd] [deg.] () Inclintion Angle [deg] 3 [deg] 6 [deg] 9[deg] 18 [deg.] (b) 2-23 AC2 xy 17

20 [dbd] [dbd] [deg.] () Inclintion Angle [deg] 3 [deg] 6 [deg] 9[deg] 18 [deg.] (b) 2-24 BC1 xy [dbd] [dbd] [deg.] () Inclintion Angle [deg] 3 [deg] 6 [deg] 9[deg] 18 [deg.] (b) 2-25 BC2 xy 18

21 [deg] mm 44mm/4 AC1 AC2 BC1 BC V H [deg]-1dB p1 p2 p

22 27 1 [dbd] [dbd] [deg.] () p1 Hed Only p2 Hed + Brest p3 Hed + Brest + Arm 18 [deg. ] (b) 2-27 AC1 xy =6 1 [dbd] 1 [dbd] [deg.] () p1 Hed Only p2 Hed + Brest p3 Hed + Brest + Arm 18 [deg.] (b) 2-28 AC2 xy =6 2

23 1[dBd] 1[dBd] [deg.] () p1 Hed Only p2 Hed + Brest 18 [deg.] p3 Hed + Brest + Arm (b) 2-29 BC1 xy =6 1 [dbd] 1 [db] [deg.] () p1 Hed Only p2 Hed + Brest 18 [deg.] p3 Hed + Brest + Arm (b) 2-3 BC2 xy =6 21

24 2.2. /4 FDTD Finite Difference Time Domin method FDTD PDA 128mm 44mm /4 Model A Model B 4 FDTD [16] 1mm PML4 1-5 FDTD 2-35 FDTD 2-37 AC1 AC2 BC1 BC2 PDA 22

25 PDA(Personl Digitl Assistnt)=14mm 82mm FDTD PDA PDA 2-4 AP1 AP2 BP1 BP2 / AC AC BC BC1 23

26 ()AC1 (b)bc FDTD ()AC2 (b)bc FDTD 24

27 /4 monopole ntenn ()AC1 ground plne (b)ac2 (c)bc1 (d)bc2-4db db ()AP1 (b)bp FDTD 25

28 ()AP2 (b)bp FDTD /4 Monopole Antenn Ground Plne ()AP1 (b)ap2 (c)bp1 (d)bp2-4db db 2-4 PDA 26

29 BC1 BC (cox) (old) 128mm 44mm BC1 BC2 FDTD /4 PML /4( 2GHz ) cox old 2-43 PDA =14mm 82mm 2-44 cox old 2-45 FDTD () ()( PDA ) BC1 BC2-1dB 27

30 AC1 AC2-1dB 6 old cox ()cox (b)old 2-42 BC1 28

31 Returnloss[dB] ()cox (b)old 2-43 BC ()cox (b)old 2-44 BP1 29

32 ()cox (b)old 2-45 BP ()AC (b)ac FDTD 3

33 ()AP (b)ap FDTD AC1 BC1 2GHz BC1 Lg(Length of ground) 24mm 56mm GHz 2-5() 31

34 Lg 15mm 2GHz Lg PDA PDA Lg 182mm 1.7GHz 2-5(b) 1.7GHz Lg 2GHz Model B Model A -1dB >6[deg] Model A Model B 3 5dB Model A /4 monopole ntenn c ground plne y z x ()AC1 (b)bc1 Lg=15= (2GHz) c=24 56[mm] Lg 2-48 Lg AC1 (c=24 56mm)

35 GHz GHz ()BC1 (c=24 56mm) (b)bp1 (c=24 56mm)

36 FDTD 3-1 1mm 1mm.5mm CPU Athlon8MHz AS FDTD dB -1dB 2.83GHz 3.9% 3-6 xy H 3-7 yz E 3-8 zx E E Model A 34

37 z hs y x h ground plne short feed short y z x c b d b b/2 =16 b=4 c=8 d=4 h=2 hs=1 [mm] =1mm 3-2 AS

38 [db] [deg.] E E 3-5 AS1 3-6 AS1 xy [db] -1 [db] [deg.] 18 [deg.] E E E E 3-7 AS1 yz 3-8 AS1 zx 36

39 FDTD AS mm mm 2 2mm FDTD FDTD GHz FDTD AS2 37

40 z y ground Plne y z dielectric substrte r =2.6 x x short c b d feed b b/2 hs h short =16 b=4 c=8 d=4 h=2 hs=1 [mm] AS1 AS1 AS2 AS FDTD FDTD.5mm.25mm FDTD 3-13 FDTD 3.6.5mm.25mm

41 FDTD cell 4cell z y dielectric substrte r =3.6 x hs h ground plne short feed short y z x c b d b/2 b =14 b=4 c=7 d=3 h=2.5 hs=1 [mm]

42 Short Feed Short.5mm.25mm =1[mm] 3-15 AS3-2[dB] [db] ()cell size.25mm (b)cell size.5mm

43 [db] [db] E E 18 [deg.] E E 3-18 AS4 xy 18 [deg.] E E E E 3-19 AS4 yz [db] E E [deg.] E E 3-2 AS4 zx 41

44 GHz FDTD IMT-2 2GHz FDTD 3-21 FDTD.25mm 1mm 1.875GHz 14mm 13mm 2.25GHz CPU Athlon XP 1.4GHz dB 42MHz 39MHz AS mm 3-25 FDTD FDTD -7dB GHz 42

45 z y dielectric substrte r =3.6 x hs h ground plne y z x short c b d feed b b/2 short =13 b=4 c=6.5 d=2.5 h=2.5 hs=1 [mm] =1mm 3-23 AS

46 short feed short -2[dB] [db] -7[dB] [db] 3-25 [db] [db] E E [deg.] E E 18 E E [deg.] E E 3-26 AS5 xy 3-27 AS5 yz 44

47 [db] [deg.] E E E E 3-28 AS5 zx Pttern Averge Gin [dbd] -1-2 AS5-V AS5-H AS5-VP AS5-HP Inclintion Angle [deg] 3-29 AS /4 Model A PDA /4 FDTD 3-31 PDA /4 FDTD FDTD 1mm PML /4 45

48 3-33 2GHz () (b) (c) 3-3 ground plne y z x ()AP3 (b)ap AP3 46

49 -1 [db] AP3 AP E AP3 E AP3 18 [deg.] E AP1 E AP AP1 AP3 xy [db] -1 [db] [deg.] E AP3 E AP3 E AP1 E AP AP1 AP3 yz E AP3 E AP3 18[deg.] E AP1 E AP AP1 AP3 zx 47

50 AP4/4 BP PDA(Personl Digitl Assistnt) =14mm 82mm, GHz [deg] =6[deg] 2 5dB z y dielectric substrte r =2.6 x hs h ground plne short feed short y z x c b d b/2 b =16 b=4 c=7.5 d=4.5 h=2.4 hs=.6 [mm]

51 /4 Monopole Antenn Top Loded Monopole Antenn c Ground Plne y c b/2 Ground Plne y b/2 z x b =14 b=82 c=15 [mm] 3-38 AP4 z x b =14 b=82 c=35 [mm] 3-39 /4 BP AP4 BP1 3-4 AP4 BP1 Pttern Averge Gin [dbd] AP4-V AP4-H BP1-V BP1-H Inclintion Angle [deg]

52 GHz Model A 1.992GHz model A 1.7 Model B 36mm 35mm 3-46 [deg] AP7 BP =27[deg]. Model A Model B =6[deg] dB 5

53 z y dielectric substrte r =2.6 x hs h ground plne short feed short y z x c b d b/2 b =16 b=4 c=7.5 d=4.5 h=2.4 hs=.6 [mm] 3-42 () AP7 A (b) BP1 A 3-43 () AP7 (b) BP

54 AP7 BP Pttern Averge Gin [dbd] Inclintion Angle [deg] AP7-V AP7-H BP1-V BP1-H p1 p2 p

55 [dbd] [dbd] [deg.] () Inclintion Angle [deg] 3 [deg] 6 [deg] 9[deg] 18 [deg.] (b) 3-48 AP7 xy [dbd] [dbd] [deg.] () Inclintion Angle [deg] 3 [deg] 6 [deg] 9[deg] 18 [deg.] (b) 3-49 BP1 xy 53

56 [dbd] [dbd] [deg.] () p1 Hed Only p2 Hed + Brest 18 [deg.] p3 Hed + Brest + Arm (b) 3-5 AP7 xy [dbd] -1-1[dBd] [deg.] () p1 Hed Only p2 Hed + Brest 18 [deg.] p3 Hed + Brest + Arm (b) 3-51 BP1 xy 54

57 4. 2 PDA 2 /4 Model A Model B 2 /4-1dB FDTD Model B Model A 6 3 5dB Model A FDTD mm 2.25GHz -1dB PDA =14mm 82mm Model A Model B >6deg 3 5dB 55

58 56

59 [1]Ogw, Mtsuyoshi nd Monm An Anlysis of the Performnce of Hndset Diversity Antenn Influenced by Hed, Hnd, nd Shoulder Effects t 9MHz: Prt1- Effective Gin Chrcteristics, IEEE VTS, pp My. 2 [2]Ogw, Mtsuyoshi nd Monm An Anlysis of the Performnce of Hndset Diversity Antenn Influenced by Hed, Hnd, nd Shoulder Effects t 9MHz: Prt2- Correltion Chrcteristics, IEEE VTS, pp My. 2 [3]H.Ari N.Igi nd H.Hnok Antenn-gin mesurement of hndheld terminls t 9MHz IEEE Trns. Veh.Tech., vol.vt-46, no.3, pp August [4] 2.GHz,5.4GHz, B-1-124, 2 [5] 12 Feb. 21 [6] 1996 [7] 1995 [8] FDTD 1998 [9]FDTD ~ fujimori/fdtd/index.html [1] FDTD 2 [11], FDTD, AP99-36, Jun

60 [12] 198 [13] B-1-47 Sep. 21 [14] B Mr. 2 [15]A.Mutou H.Ari Antenn Pttern Mesurement Using Phntom For Hndset Phone As Viewer Terminl Proc. of APMC, pp Dec. 2 [16] FDTD 12 Feb

61 B-1-47 Sep. 21 FDTD B Mr

62 2 1 1 A B 2 P PDA =14mm 82mm C cellulr =128mm 44mm S 1mm (squre) 3 2 b ()AP1 (b)ap2 (c)bp1 =14 b=82mm (d)bp2.1: PDA /4 b ()AC1 (b)ac2 (c)bc1 (d)bc2 =128 b=44mm.2: (=128mm 44mm) /4 6

63 b d c ()AS1 AS6 (b)ap3 AP7 =1 b=1 c=14 d=82[mm].3: 61

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