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- ひとお みのしま
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1 A Study of Variable Beam-tilted Microstrip Array Antenna
2 LAN(Local Area Network) LAN PC LAN LAN LAN 5.2GHz 20 25Mbps OFDM(Orthogonal Frequency Division Multiplexing)
3 (30,45,60[DEG.]) i
4 kbit/s Bluetooth ITS MMAC(Multimedia-Mobile-Access-Communications) MMAC GHz LAN HiSWANa(High Speed Wireless LAN a) LAN 20 25Mbps 2
5 1-1 LAN PC (LAN : Local Area Network) (LAN ) LAN (1) LAN (2) PC LAN (1) ( ) LAN (2) LAN LAN PC 1-2 PC 3
6 1-2 (NTT DoCoMo vol.8 No.4 pp56 ) ( PC) FTTH(Fiber To The Home) LAN LAN (IEEE) IEEE LAN 5.2GHz a 2.4GHz b 2.4GHz LAN 2.4GHz LAN 11Mbit/s 2.4GHz ISM(Industrial Scientific and Medical) Bluetooth LAN HiSWANa 5.2GHz 5.2GHz 5.2GHz 4
7 LAN 5.2GHz OFD M(Orthogonal Frequency Division Multiplexing ) ( 1-3) [1] OFDM 800ns 4 s 1-3 OFDM MSA MSA [1][2] MSA MSA MSA 5
8 λ/4 εr=4 0 [2] IE3D
9 1.2. LAN / ( ) 1 H 1 0[deg.] 30~60[deg.] 30~60[deg.] 0[deg.] 30~60[deg.] 30~60[deg.] 1-4 7
10 H h 1-5 H: m, h: 1m 8
11 LAN 2 /4 εr=2.6 εr=4.0 IE3D
12 / /
13
14 εr =2.6 εr =4.0 50Ω 12
15 W ε r h 2-5 ε 2 Z0 e = Z ε r 1 ε r + 1 εe = h 2 1 W εe (εr =2.6 h=0.8mm) 50Ω 2.26mm εr =4.0 L 1 5.2GHz L 1 =15mm λg c L1 = = = 15mm 2 2 f ε ( 5.2G) r 2-3 IE3D L 1 W 2 5.2GHz 13
16 2-6 L 1 =11.0mm W 2 =5.0mm 2-7 RL 15dB A L 2 z y x W 2 W 1 L 1 B z y 2-6 L 1 =λ/4=11.0mm, L 2 =λ/2=15.0mm, W 1 =2.0mm, W 2 =5.0mm A ; εr =2.6, B ; εr =4.0, 0.8mm
17 (0mm) 9mm (9mm) E 0.3GHz 10mm 0 9mm -10dB E 0 Return Loss[dB] offset 0mm 1mm 3mm 5mm 7mm 9mm 10mm Frequency[GHz] 2-7 ( ) 15
18 0mm 9mm 2-8 The radiation patch offset 0mm 9mm 2-9 E 16
19 IE3D (2mm) (7mm) mm E mm E
20 L 1 W 1 L 2 50mm 50mm L 1 =11mm L 2 =15mm W 1 = 5mm 2-10 L 1 =11.0mm, L 2 =15.0mm, W 1 =5.0mm, l 1 =50mm 50mm 15mm 50mm 15mm
21 0-5 Return Loss[dB] d=7mm d=2mm mea. cal. mea. cal. d Frequency[GHz] 2-12 Mea. Cal E (d=2mm) 19
22 Mea. Cal E (d=7mm)
23 g θ N 2-4 g ( θ ) N = a e n nu d n= 0 n u = ndsinθ jnu ( ) d j sin ( ) ( ) ( ) (1 2 θ θ = θ θ = ± ) ( θ ) g F D je D π
24 y 0 d x H (d= /4)
25 G( θ ) = F( θ) D( θ) F( θ ) = 1+ sin ( 2πdsinθ) j cos( 2πdsinθ) 2-7 d d T 90 T (a) 90 T 28mm 2-20 (b) 23
26 L1 l2 l1 L2 d z x y B ( 4.0) ε r = z y A 0. 8mm 2-17 MS L 1 =λ/2=15.0mm, L 2 =λ/4=11.0mm l 1 =30.0mm, l 2 =30.0mm, 0.8mm 24
27 0 Return Loss[dB] T-junction offset 0mm 24mm 28mm 4 5 Frequency[GHz] (a)t-junction offset 0mm (b)t-junction offset 28mm
28 (a)t-junction offset 0mm (b)t-junction offset 28mm
29 L 1 d L L 1 =λ/4=11.0mm, A; εr = mm (a)(b) 2-23 (a) 2 (b) 90 E (a) (b) 90 3dB
30 a b a b E d 28
31 d d=0.5λ(20mm) a 2-25(a) 29 a 1mm d=0.3λ(12mm) E 2-25 b 43 d=0.4λ(16mm) 2-25 c 31-15dB - 0 Return Loss[dB] d=20mm d=12mm(the one-side) d=16mm(the both-side) Frequency[GHz]
32 (1) d=0.5λ 29.0 d=0.5λ(20mm) λ (2) 43 d= 0.3λ (12mm) (3) 31 d= 0.4λ (16mm) 2-25 E λ 3mm 41-15dB 30
33 2.5. 3mm 3mm 41[deg.] d= IE3D mm 125mm GHz 4.76GHz 2-30 (a) 2-30(b) 31
34 E 4 44GHz 4 76GHz l3 L1 d z l2 x B ( 4.0) ε r = 0.8mm 2-27 L 1 =λ/2=15.0mm, L 2 =λ/4=11.0mm l 1 =30.0mm, l 2 =30.0mm, l 3 =12.5mm, l 4 =7.0mm, 0.8mm 32
35 12.5cm Square patches 7.0cm Return Loss[dB] Frequency[GHz] cal.(infinite) cal.(finite) mea
36 (a)4.44ghz (b)4.76ghz 2-30 Cal.(IE3D) Mea
37 Cal.(IE3D) Mea λ/ [7] 35
38 λ/4 L λ 0.6λ
39 2-35 L L 1 L L 2-34 ( ) L 1 =λ/2=15.0mm, L 2 =0.4λ g =22.0mm, L 3 =50.0mm H=24.0mm, ; εr =4.0, 0.8mm 37
40 Mea. Cal E T 90 λ λ 38
41 mm d d=0.5λ(20mm) a 2-38 a a 1mm d=0.3λ(12mm) E b 60 d=0.4λ(16mm) c 45-10dB 39
42 l3 L3 L1 L2 d l1 l2 l4 z x y z H B ( 4.0) ε r = y A 2-36 L 1 =λ/2=15.0mm, L 2 =λ/4=11.0mm, L 3 =0.4λ=22.0mm l 1 =30.0mm, l 2 =30.0mm, l 3 =12.5mm, l 4 =7.0mm, H=24.0mm, 0.8mm 40
43 0 Return Loss[dB] Frequency[GHz] No offset oneside patch moved bothside patches moved
44 (1) d=0.5λ -36 d=0.5λ(20mm) λ (2) -60 d= 0.3λ (12mm) (3) -45 d= 0.4λ (16mm) dB 56 42
45 3mm 3mm 56[deg.] d= mm 125mm Stacked patch 24mm
46 E 4.76GHz Return Loss[dB] Frequency[GHz] cal.(infinite) cal.(finite) mea
47 Mea. Cal E 2.4. (30,45,60[deg.]) E 30 d 2-43(1) d=0.15λ 7mm d=0.20λ 20 5mm E 2-45(a) -20dB
48 45 d=0.10λ 2-43(b) d=0.20λ 7mm E 2-45(b) -20dB d=0.05λ 60 3mm (a)(b) -15dB E 2-45(c) 60 5mm 0.15λ (a) 30[deg.] 5mm 7mm 0.2λ 7mm (b)45[deg.] 3mm 0.05λ 3mm (c)60[deg.]
49 0 Return Loss[dB] (a) 30[deg.] (b) 45[deg.] (c) 60[deg.] Frequency[GHz]
50 (a) 30[deg.] (b)45[deg.] (c)60[deg.]
51 λ
52
53 51
54 [1] 5GHz OFDM AP [2] [3] [4] 1987 [5] 1998 [6] p
55 [1] AP May2001 [2] 2 B-1-77 Oct 2001 [3] B March 2001 [4] Kozue HAMAMOTO Hiroyuki ARAI Kenya YONEZAWA and Toshiyuki MAEYAMA " Variable Beam Tilt Microstrip Array for 5GHz Wireless Access System " Asia-Pacific Microwave Conference APMC 2001 TU3E-5 December
3 16 2 27 4497 LAN(Local Area Network) OFDM(Orthogonal Frequency Division Multiplexing) 12 3 3 12 3 12 33. F/B 22.7dB 3 F/B i 1 1 2 3 8 2.1................................. 8 2.2.............................
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