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.... 2 1.2.... 7 2....9 2.1.... 9 2.1.1.... 9 2.1.2.... 12 2.1.3.... 14 2.1.4.... 17 2.2.... 20 2.2.1.... 21 2.2.2.... 22 2.2.2.1....23 2.2.2.2....26 2.2.3.... 28 2.2.4.... 31 2.3.... 35 2.3.1.... 35 2.3.2.... 36 2.3.3.... 38 2.3.4.... 43 2.4. (30,45,60[DEG.])... 2.5.... 49 3....50...51...52...53 i
1. 1.1. 2000 10 384kbit/s Bluetooth ITS MMAC(Multimedia-Mobile-Access-Communications) MMAC 1-1 5.2GHz LAN HiSWANa(High Speed Wireless LAN a) LAN 20 25Mbps 2
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
1-2 (NTT DoCoMo vol.8 No.4 pp56 ) ( PC) FTTH(Fiber To The Home) LAN LAN (IEEE) IEEE 802.11 LAN 5.2GHz 802.11a 2.4GHz 802.11b 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
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
λ/4 εr=4 0 [2] 90 4 30 45 60 IE3D 2.1 2.2 2 2 90 2 3 2 60 30 45 50 60 6
1.2. LAN 1-4 4 4 5 1-5 1/4 1-5 1 ( ) 1 H 1 0[deg.] 30~60[deg.] 30~60[deg.] 0[deg.] 30~60[deg.] 30~60[deg.] 1-4 7
H h 1-5 H: 15 100m, h: 1m 8
2. 1 2 3 4 5 2.1. LAN 2 /4 εr=2.6 εr=4.0 IE3D 2.1.1. 9
/4 2 2-1 2-2 1/2 2-3 2-4 2 2-1 10
2-2 2-3 11
2-4 2.1.2. 2.1.1 2-4 εr =2.6 εr =4.0 50Ω 12
W ε r h 2-5 ε 2 Z0 e = Z ε r 1 ε r + 1 εe = + 2 10h 2 1 W 2-1 2-2 εe 2-12-2 (εr =2.6 h=0.8mm) 50Ω 2.26mm εr =4.0 L 1 5.2GHz 2 1 2-3 L 1 =15mm λg c L1 = = = 15mm 2 2 f ε ( 5.2G) r 2-3 IE3D L 1 W 2 5.2GHz 13
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 2.1.3. 2.1.2 14
(0mm) 9mm (9mm) 2-7 2-9 E 0.3GHz 10mm 0 9mm -10dB E 0 Return Loss[dB] -10-20 -30 offset 0mm 1mm 3mm 5mm 7mm 9mm 10mm 4.5 5 5.5 Frequency[GHz] 2-7 ( ) 15
0mm 9mm 2-8 The radiation patch offset 0mm 9mm 2-9 E 16
2.1.4. 2 1 3 2-6 4 1 2-10 4 1 IE3D 2-10 2-10 2-11 (2mm) (7mm) 2-12 2mm E 2-13 7mm E 2-14 17
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 2-11 18
0-5 Return Loss[dB] -10-15 -20 d=7mm d=2mm mea. cal. mea. cal. d -25 2 3 4 5 6 7 Frequency[GHz] 2-12 Mea. Cal. 2-13 E (d=2mm) 19
Mea. Cal. 2-14 E (d=7mm) 2.2. 2.1 2.2 2 2 90 20
2.2.1. g θ N 2-4 g ( θ ) N = a e n nu d n= 0 n u = ndsinθ jnu ( ) 2-4 2-5 d 2-15 2 90 2-6 2-16 j sin ( ) ( ) ( ) (1 2 θ θ = θ θ = ± ) ( θ ) g F D je D π 2-6 21
y 0 d x 2-15 2 2-16 H (d= /4) 2.2.2. 2 2 90 2-7 22
G( θ ) = F( θ) D( θ) F( θ ) = 1+ sin ( 2πdsinθ) j cos( 2πdsinθ) 2-7 d 2.2.2.1. 2 1 3 2-17 2 d T 90 T 2 2-20 (a) 90 T 28mm 2-20 (b) 23
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
0 Return Loss[dB] -5-10 -15-20 T-junction offset 0mm 24mm 28mm 4 5 Frequency[GHz] 6 2-18 (a)t-junction offset 0mm (b)t-junction offset 28mm 2-19 25
(a)t-junction offset 0mm (b)t-junction offset 28mm 2-20 2.2.2.2. 2.2.2.1 2 1 3 2-21 90 2.2.2.1 26
L 1 d L 1 2-21 L 1 =λ/4=11.0mm, A; εr =2.6 0.8mm 90 2-22 (a)(b) 2-23 (a) 2 (b) 90 E 2-20 2-23 (a) (b) 90 3dB 2.2.2.1 90 27
a b 90 2-22 a b 90 2-23 E 2.2.3. 2.2.2.1 2-7 d 28
2-17 2 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] -10-20 -30 d=20mm d=12mm(the one-side) d=16mm(the both-side) 4 4.5 5 5.5 6 Frequency[GHz] 2-24 29
(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 2-26 0.05λ 3mm 41-15dB 30
2.5. 3mm 3mm 41[deg.] d= 0.05 2-26 2.2.4. IE3D 2-27 2-28 70mm 125mm 2 2 3 2-29 4.44GHz 4.76GHz 2-30 (a) 2-30(b) 31
E 4 44GHz 4 76GHz 2-31 2-32 2 2 3 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
12.5cm Square patches 7.0cm 2-28 0 Return Loss[dB] -10-20 -30 3 4 5 6 Frequency[GHz] cal.(infinite) cal.(finite) mea. 2-29 33
(a)4.44ghz (b)4.76ghz 2-30 Cal.(IE3D) Mea. 2-31 34
Cal.(IE3D) Mea. 2-32 2.3. 2.2 2 2 2 3-40 2 2 4 1.2 30 60 λ/4 2.3.1. [7] 35
λ/4 L 0.4 0.45λ 0.6λ 10 2-33 2.3.2. 2-34 2-35 2-34 36
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
Mea. Cal. 2-35 E 2.3.3. 2 3 2 20 2 2 2-36 2 2 T 90 λ λ 38
1 2-36 2.4mm 15. 2 d d=0.5λ(20mm) a 2-38 a 36 29 2 2 3 a 1mm d=0.3λ(12mm) E b 60 d=0.4λ(16mm) c 45-10dB 39
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
0 Return Loss[dB] -10-20 -30 4 4.5 5 5.5 6 Frequency[GHz] No offset oneside patch moved bothside patches moved 2-37 41
(1) d=0.5λ -36 d=0.5λ(20mm) λ (2) -60 d= 0.3λ (12mm) (3) -45 d= 0.4λ (16mm) 2-38 2-39 -15dB 56 42
3mm 3mm 56[deg.] d= 0.05 2-39 2.3.4. 2-27 70mm 125mm 2 3 3 2-40 Stacked patch 24mm 2-40 43
2-41 2 2.4 E 4.76GHz 2-42 2 2 4 2 3 3 0 Return Loss[dB] -10-20 -30 4 4.5 5 5.5 Frequency[GHz] cal.(infinite) cal.(finite) mea. 6 2-41 44
Mea. Cal. 2-42 E 2.4. (30,45,60[deg.]) 1 2 30 45 60 30 45 60 2-43 2-44 2-45 E 30 d 2-43(1) d=0.15λ 7mm d=0.20λ 20 5mm E 2-45(a) -20dB 30 45 45
45 d=0.10λ 2-43(b) d=0.20λ 7mm E 2-45(b) -20dB 45 60 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.] 2-43 46
0 Return Loss[dB] -5-10 -15 (a) 30[deg.] (b) 45[deg.] (c) 60[deg.] 0 2 4 6 Frequency[GHz] 2-44 47
(a) 30[deg.] (b)45[deg.] (c)60[deg.] 2-45 48
2.5. 2.1 2.2 2 2 2 3-40 2 2 4 2.3 2.3.2 20 2.3.4 0.4λ 60 2.4 49
3. 2 2 90 2 60 30 45 60 50
51
[1] 5GHz OFDM AP-10-47 2000 [2] [3] [4] 1987 [5] 1998 [6] p 117 119 52
[1] AP2000-12 May2001 [2] 2 B-1-77 Oct 2001 [3] B-1-178 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 2001 53