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- あやか みやくぼ
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2 IMT- 2International Mobile Telecommunication 2 FBFront to Back IMT-2 H E 8 2/15 (2mm)H 5/4 (187mm)E 1 (15mm) FB 24.8dB E 3dB FB (H ) H 45 FB 23.8dB -6.2dB i
3 ii
4 1 PHS PDCPersonal Digital Cellular system IMT-2International Mobile Telecommunication 2 CDMACode Division Multiple Access IMT-2 1
5 FBFront to Back 1.1 FB dB FB 2dB [3] IMT : 2
6 1.2: :E- plane :H-plane 1.3: O/EE/O 8 3
7 : 1.5: 4
8 [db] H-plane E-plane 1.6: [4],[5],[6] FDTDFinite Difference Time Domain method FDTD [1] 5
9 2 FDTDFinite Difference Time Domain method mm PML8 18cell dx=dy=.5,dz=.2[mm] GHz 1.66GHz 6
10 G1 G2 M2 G5 G3 G4 G2 M1 2.1: M 1 =32M 2 =2G 1 =31G 2 =2G 3 =8G 4 =11G 5 =2 unit[mm] R eturn L oss [db ] cal. mea. 5 1 Frequency [GHz] 2.2: 2.3 7
11 G3 G4 G5 M2 M4 M3 G2 G1 M5 M1 M6 G2 2.3: M 1 =23M 2 =12M 3 =22M 4 =13M 5 =14M 6 =2G 1 =8G 2 =2G 3 =62G 4 =2 G 5 =12 unit[mm] GHz 1.68GHz R eturn L oss [db ] Frequency [GHz] cal. mea. 2.4: 8
12 2.5 H XZ 2.6 E YZ H E H E [db ] : H [db ] : E 9
13 H 9 27 H E : H
14 GHz G3 G2 G4 G5 M1 M3 M2 G1 M4 M5 G2 2.8: M 1 =12M 2 =22M 3 =13M 4 =14M 5 =2G 1 =8G 2 =2G 3 =62G 4 =2G 5 =12 unit[mm] R eturn L oss [db ] -5 center-feed micro strip-feed Frequency [GHz] 2.9: 11
15 dB 2mm GHz 1.863GHz R eturn L oss [db ] -1-2 before matching(cal.) before matching(cal.) after matching(mea.) after matching(mea.) Frequency [GHz] 2.1: 2.11 H 2.12 E H E H E 18 H E 12
16 [db] : H [db] : E 13
17 2.13: :: 14
18 2.2 FBFront to Back IMT-2 FDTD subgrid FDTD subgrid GHz 2dB FB [2] [2] D=/4 [3] H=/2 W =5/4 H=/2 W =5/4 D=/
19 W D H 2.14: [db] 1 R eturn L oss [db ] -1-2 W ithout R ef. Ref Frequency [GHz] : H H=/2W =5/4 D=/4 H=1 W =1 D 3mm 2.16 FB
20 D 1 [db] R eturn L oss [db ] -1-2 D D D D Frequency [GHz] 18 D D D D 2.16: D H D 1 :D 2 =3D 3 =2D 4 =1 unit:[mm] H 1 W 1 4 2mm 2.17 W =2 4 W =1 2 W = W =2 W =1 W =2 17
21 [db] W W W W 2.17: W H (1) W 1 =1 W 2 =2 W 3 =3 W 4 =4 W =1 W =2 H 1 W W =1.25 FB 24.8dB FB 2.19 H 2 3 H=1 W =1.25 FB H=2 3 H=1 FB H=1 W =1.25 FB H=2 3 H=1 W =1.25 FDTD subgrid 18
22 [db] W W W W 2.18: W H (2) W 1 =1 W 2 =1.25 W 3 =1.5 W 4 = H=1 H=2 H= W 2.19: W FB 19
23 2.2.2 FB [2],[3] H=1 W =5/4 D=2/15 H E 2.2 D D FB 2.21 H H ModelBModelC FB E ModelA D=2mm FB 3.8dB H 2.22 H D=1mm FB H D D Model A Model B D Model C 2.2: ModelA:E ModelB:H ModelC: 2
24 3 2 1 Model A Model B Model C : D FB [db] : E (D=2mm) H 21
25 [db] Model BModel C Model BModel C 2.23: H (D=2mm) H 22
26 3 H , H [1] 23
27 3.1: H XZ YZ YZ 18 24
28 G3 M4 G4 G5 M1 M3 M2 M5 G2 G1 G2 3.2: M 1 =28M 2 =22M 3 =13M 4 =14M 5 =2G 1 =2G 2 =8G 3 =62G 4 =2G 5 =12 unit[mm] [db] : H Y H XZ 25
29 YZ 3.4 Y H 3.5 H H 9 1.3dB G3 S2 G1 G4 G5 M3 S1 M4 M2 M5 M1 G2 G1 3.4: M 1 =2M 2 =15M 3 =26M 4 =12M 5 =2G 1 =2G 2 =8G 3 =62G 4 =2G 5 =12 S 1 =4S 2 =8 unit[mm] [db] 1 R eturn L oss [db ] -1-2 W ithout Slot Slot Frequency [GHz] : H 26
30 H 18 H H=1 (15mm) W =5/4 (187mm) D=2/15 (2mm) S 1 =4,S 2 =8[mm] H 3.7 H 45 2dB -15dB -1.8dB 3.8 W D H 3.6: H=1 W =5/4 D=2/15 27
31 [db] 1 R eturn L oss [db ] W ithout Slot Slot Frequency [GHz] : H [db] 1 R eturn L oss [db ] cal. mea Frequency [GHz] 3.8: H S 1 S 2 S 2 8mm S 1 4mm 6mm 28
32 3.9 S 1 S 1 =5mm S 1 =6mm 45 S S 1 =4mm S 1 S 1 5mm 6mm S 1 6mm S S 1 [db] [db] [db] : H A:S 1 =4B:S 1 =5C:S 1 =6 unit[mm] 29
33 Gain(co-pol.) Gain(cross-pol.) : (S 2 =8mm) Gain(co-pol.) Gain(cross-pol.) : (S 1 =6mm) 3
34 3.2 H [3] H ,1.3 H E mm mm H GHz 31
35 [db] P 1 1 P P4 P : H P 1 =2P 2 =2P 3 =5P 4 =12 unit[mm] [db] 1 P P P : H P 1 =15P 2 =12.5P 3 =5 unit[mm] 32
36 G3 [db] G4 M1 M3 G1 1 2 G5 M4 G6 M2 M5 G2 G : H M 1 =12M 2 =22M 3 =13M 4 =14M 5 =2G 1 =2G 2 =8G 3 =62G 4 =2.5G 5 =12 G 6 =2 unit[mm] G3 [db] G6 G4 G5 M4 M1 M3 M5 M2 G1 G2 G : H M 1 =12M 2 =22M 3 =13M 4 =14M 5 =2G 1 =2G 2 =8G 3 =62G 4 =2G 5 =12 G 6 =8.5 unit[mm] 33
37 G3 [db] 1 G4 G5 M1 M3 M2 G1 G M4 M6 M5 G : H M 1 =12M 2 =22M 3 =13M 4 =14M 5 =2M 6 =1G 1 =2G 2 =8G 3 =62G 4 =2 G 5 =12 unit[mm] Return Loss [db] A B C D E Frequency [GHz] 3.17: A: B: C: D: E: 34
38 H 2 H 3.15 H dB [db] P P P4 P : H P 1 =13P 2 =2P 3 =1P 4 =16 unit[mm] H H=1 (15mm)W =5/4 (186mm)D=2/15 (2mm) ( 3.18 ) H FB 23.8dB -6.2dB FB 35
39 5dB6dB 3 W P 1 H P 2 P 4 P3 D 3.19: P 1 =13P 2 =2P 3 =1P 4 =16H=15W =186D=2 unit[mm] 1 [db] R eturn L oss [db ] Frequency [GHz] : H 36
40 3.1 S 1 =4S 2 =8[mm] FB 3.1: FB ratio[db] [db] cal (-15.9) mea. 19 (-13) cal mea
41 4 IMT-2 H FB H=1 (15mm) W =5/4 (186mm) D=2/15 (2mm) 24.8dB FB FB H E 2mm E 3.8dB FB H 45 FB 23.8dB -6.2dB 38
42 D3 D2, 39
43 [1] 1996 [2] FB 21 [3] B-1-152Sep.2 [4] AP-95-22pp47-54(1995-5) [5] B [6] B [7] B [8] FDTD 1998 [9] B
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A Study of Small Built-in Antenna for Hand held Terminal
A Study of Smll Built-in Antenn for Hnd held Terminl 6 9 IMT-2 Interntionl Mobile Telecommunictions-2 2GHz /4 PDA Personl Digitl Assistnt 2 FDTD Finite Difference Time Domin method 6 FDTD 3.6 2.5mm 2.25GHz
FDTD(Finite Difference Time Domain) Maxwell FDTD FDTD FDTD (FFT) FDTD CP(Contour-Path)-FDTD i
FDTD 17 2 7 03GD191 FDTD(Finite Difference Time Domain) Maxwell FDTD FDTD FDTD (FFT) FDTD CP(Contour-Path)-FDTD 45 1 2 i 1 1 1.1 FDTD....................... 1 1.2 FDTD............................ 2 1.3
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Doctor Thesis Template
A Study of Variable Beam-tilted Microstrip Array Antenna LAN(Local Area Network) LAN PC LAN LAN LAN 5.2GHz 20 25Mbps OFDM(Orthogonal Frequency Division Multiplexing) 2 2 90 2 60 30 45 60 1....2 1.1....
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FDTD S A Study on FDTD Analysis based on S-Parameter 18 2 7 04GD168 FDTD FDTD S S FDTD S S S S FDTD FDTD i 1 1 1.1 FDTD.................................... 1 1.2 FDTD..................... 3 2 S 5 2.1 FDTD
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