( ) (mm) (GHz)=300( ) 30 300GHz=1 10mm ( 2GHz2Mbps) Gbps= Mbps ( m),?
S G=P/Pi30dB=1000 Gm=4πS/λ 2, S= 80λ 2 Gm=30dB η=g/gm, S= 80λ 2,G=27dB η=50%
(GHz) 80 70 60 50 40 30 20 10 16 19 22 25 28 31 34 37 40 43 (dbi) (Larger Size)
Transmission loss (db/cm) 0.25 0.2 0.15 0.17 db/cm?? radiation dielectric conductor 0.8 mm 1.6 mm 0.1 0.05 0 0.038 db/cm 0.003 db/cm Microstrip line Post-wall WG Hollow WG : 7 σ = 5.8 10 S/m : : ε r = 9.4 tan δ = 4.0 10 4 : PTFE ε r = 2.17 tan δ = 6.0 10 4 25.6 GHz 2 Flexibility 0.18 mm 5.5 mm 10.668 mm 0.2 mm Z = 3.2 mm 0 50 Ω 4.318 mm Std. WG (WR42) 0.17 db/cm 1 1 High TEM 0.038 db/cm 1 3 Low TE 10 0.003 db/cm 5 50 Low TE 10 1 R.A. Pucel, D.J. Masse, C.P. Hartwig, "Losses in microstrip," IEEE Trans. on Microwave Theory and Techniques, vol. 16, No. 6, pp.342-350, June 1968. 2 Relative value based on microstrip line
Slot plate λ g π-junction Groove feed structure 0.5λ g T-junction
Frequency [GHz] Antenna Efficiency [%] 80 70 60 50 40 30 20 60% B H 61% H65% Antenna efficiency [%] H 37% D D D D E DE 64% 50% 49% 43% 58% 45% 50% (Taylor) 54% 64% B J B J E 43.3% 34.3% 55% 20.4% H H 55% 10 16 19 22 25 28 31 34 37 40 43 Gain [dbi] 35dBi (Choke+No contact) 60% O O 65% B E 75.6% 47% 80 E Waveguide 70 O E E 60 E 50 E B 40 Taylor D 30 Microstrip & Triplate 20 10 0 10 20 30 40 50 60 70 80 Frequency [GHz] H 50% B E Waveguide } O Waveguide RLSA J RLSA D 50% Post-wall WG B H Microstrip B Triplate 60 80 GHz D J D D B Microstrip & Triplate Waveguide E J E Taylor E D D 16 19 22 25 28 31 34 37 40 43 Gain [dbi]
Parallel Plate Waveguide Window Post Post Reflection Canceling Slot Pair T Junction Feed Waveguide Coupling Window Input Aperture 60GHz 1.2mm(0.35λ, εr=2.17, PTFE) () (0.5mm1.0mm ) PCB ()
0-5 -10-15 -20-25 -30-35 -40 E-plane H-plane -90-75-60-45-30-15 0 15 30 45 60 75 90 Angle(deg) 76.5GHz TEM = 52mm 49mm 4dB = 12dB
0-5 -10-15 -20-25 -30-35 -40 E-plane H-plane -90-75-60-45-30-15 0 15 30 45 60 75 90 Angle(deg) E H 8dB : 18dB (: 22dB)
Post Reflection Canceling Slot Trio Parallel Plate Waveguide T Junction Feed Waveguide 45 Window Post Coupling Window Input Aperture 1+2 ( ) ( 28dB) 0-5 -10-15 -20-25 -30-35 -40-90 -60-30 0 30 60 90 Angle(deg)
- 60GHz MSL RF RF Post-wall planar antenna 75 mm 32 mm Thickness of the antenna substrate : 1.2 mm MSL to to Upper side Backside MMIC Package VGG IF VDD Connector (for DC and IF) (cm) (7.0 GHz (11.7%))
s s d h Inner Conductor (a) LTCC substrate h Post-Wall Waveguide Short Wall s q p (b) PTFE substrate s h θ d q Reflection Canceling Posts p a LTCC b c d (c) PTFE substrate (d) PTFE substrate
PTFE LTCC Reflection[dB] (a) 0-10 -20-30 (d) (a) (e) (b) (b) (c) 56 58 60 62 64 Frequency[GHz] (c) Reflection[dB] 0-10 -20-30 (c) (d) (e) (a) (e) (b) (d) 56 58 60 62 64 Frequency[GHz]
-15dB 0.1 mm 0.8 mm 0.6 mm (PTFE) (PTFE) (PTFE) (PTFE) (LTCC) 15 [%] 2.0 [%] 15 [%] 12.8 [%] 15 [%] -- 1.1 [%] 14.7 [%] 13.2 [%] 11.3 [%]
Reflection [db] 0-5 -10-15 58 59 60 61 62 Frequency [GHz] 28 26 24 22 20 18 Gain [dbi] 27.3dBi 58.2% -12.2dB (6%) 46mm 40mm
(2 ) (10-4 ) (100m 1t!),(10µm) ( / >5) (??) 20g, 15 10 /
(RLSA) Slot Pair (80% 12GHz ) 12GHz Tokyo Institute of Technology
60GHz RLSA () Slot Plate Dielectric Copper foil Dielectric Coaxial feeder Bottom Plate ε r (=1.20) Bottom Plate Coaxial feeder ε r (=2.20) Tokyo Institute of Technology
60GHz RLSA Gain [dbi] 36 34 32 30 28 26 24 80% 70% 60% 50% 80% 70% 60% 50% measured cal. 22 58 59 60 61 62 Frequency [GHz] A B- C- A- (, 100 mmφ) : 33.0dBi, : 50% B- (, 50 mmφ) : 27.3dBi, : 54% C- (, 100 mmφ) : 33.4dBi, : 55% Tokyo Institute of Technology
2 RLSA Aperture Efficiency (%) 90 85 80 1 ε r1 =2.08 75 1 1.2 1.4 1.6 1.8 2 Dielectric Constant ε r 2 ε r2 =1.08 ε r <1.2,ε r >2 Tokyo Institute of Technology
RF RF RF Ethernet(24V ) : 2kg
+
+ 150 100 50 0-50 -100-150 -150-100 -50 0 50 100 150 X [mm] 0-1 -2-3 -4-5 -6-7 -8-9 -10-11 -12-13 -14
34 33 32 31 30 29 Bonding Screw Screw+Choke 80% Cal. 70% 60% 50% 40% 28 0.97 0.98 0.99 1 1.01 1.02 Normalized Frequency
a (er=9.8) 130 76GHz 1mm15 d Tokyo Institute of Technology
8 ( :#3 ) : -9 db : -112.5-9 db 0 db (Ansoft HFSS) (db) 0 5 10 15 20
8 106.5 mm 6.0 303.14 mm 17.1
8 15 10 #4 #8 #2 #6 #1 #5 #3 #7 Gain (dbi) 5 0 5 10 15 90 60 30 0 30 60 90 Angle (deg)
Back side Top side Input ports 120 mm waveguide feeder 4-way Butler matrix Slot array (58.8 mm) (145.7 mm) 270 mm 1
+?
() RF