LOW-PROFILE PLANAR PATCH ANTENNA ARRAYPROFILE …50mhzandup.org/Miroslav Pajovic16x16 Patch Array...
Transcript of LOW-PROFILE PLANAR PATCH ANTENNA ARRAYPROFILE …50mhzandup.org/Miroslav Pajovic16x16 Patch Array...
LOW-PROFILE PLANAR PATCH ANTENNA ARRAYLOW-PROFILE PLANAR PATCH ANTENNA ARRAY For 10 GHz with Gain > +30 dBi
To: “50 MHz & UP” CLUB, North California
From: MIROSLAV PAJOVIC (WA6MP)From: MIROSLAV PAJOVIC (WA6MP)Sr. Antenna Design Engineer
“MP Antennas and Arrays R&D”
About the author
Received Graduate Diploma Degree in Electrical Engineering from U i it f B l d S bi d th l ti t MSEE i USAUniversity of Belgrade, Serbia; and the evaluation to MSEE in USA, 1994.
Professionally active in Silicon Valley for 20+ years Used to work for Professionally active in Silicon Valley for 20+ years. Used to work for Sanmina and Nortel Networks Corps. as Sr. EMI/RF Engineer; for Cisco Systems as a Technical EMI Leader; and for Enegrous Corp. as Sr. Principal Antenna Engineer.
Currently Antenna Design and EMI Consulting Engineer.
Some IEEE Publications and USA Patents in R&D
IEEE Conference paper: “Dual-band metamaterial-structured antenna with coplanar waveguide and radial feed stub”, M. Pajovic with team, et al., IEEE Symposium on Antennas and Propagation, Vancouver, Canada, 2015 p g , , ,
Common-Mode Filter for 10-Gb/s Differential Microstrip Lines, M. Pajovic with team, USA patent 8,907,748 B2, 2014.
IEEE Conference paper: “The Gigahertz common-mode filter for differential signal lines”, M. Pajovic with team, et al., IEEE EMC Symposium, Denver, Colorado, 2013, and j , , y p , , , , “Improved Common-Mode Filter for 10-Gb/s Straplines”, M. Pajovic with team, USA Patent
pending. “Gigahertz-range Analysis of Impedance Profiles and Cavity Resonances in Multilayered
planar structures”, M. Pajovic with team, et al., IEEE Transactions on Electromagnetic Compatibility, 2010.
“The Closed-form Equation for Estimating Capacitance of Signal Vias in Arbitrarily Multilayered PCBs”, M. Pajovic with team, IEEE Transactions on Electromagnetic Compatibility, 2008.
HAM Radio Life
Received the first Ham Radio license in 1967, former Yugoslavia, in a high school (50 years ago!) Later, got a personal call sign YU1WK.
Used to be a long time member of Academic HAM Radio Club YU1EXYfrom Belgrade University (well known European Club on Ham-radio bands and in worldwide contests)
Currently (over a decade) the call sign is WA6MP (extra FCC class)
LOW-PROFILE PANEL PATCH ANTENNA ARRAYLOW-PROFILE PANEL PATCH ANTENNA ARRAY For 10 GHz with Gain > +30 dBi
Design concept and HFSS simulation results
16x16 Patch array (256 patches), (16x16) inch
Top view
Stackup for 16x16 patch Array
Array PCB> 1st layer; 16x16 patches, CuDielectric Ro3035 thick 60 milDielectric Ro3035, thick 60 mil
2nd layer; GND plane, CuFeed PCB> 1st layer; GND plane
Dielectric Ro3035 thick 60 milDielectric Ro3035, thick 60 mil 2nd layer; feed network, Cu
Air; thick 10mmEl t i PCB 1st l GND l CElectronic PCB> 1st layer; GND plane, Cu
Dielectrics (?)Electronic components layer
PCB panels and the array assembling
Ro3035 or Ro3003 are commercially graded materialso3035 o o3003 a e co e c a y g aded ate a s(DK=3.6 or 3.0; TD=0.0015 or 0.001)
May be used one panel for two PCBs May be used one panel for two PCBs
The Array assembling is putting together the two PCBs (face-to-face d l )ground planes)
The array element: a wideband patchThe array element: a wideband patch above GND plane with embedded slots
Patch X-Y size:Patch X-Y size: (0.26x0.33) inchGND size: (1x1) inch
Patch Stackup and dielectric materialp
1st layer: Patch1st layer: Patch
RO3035, thick 60-mil
2nd layer: solid GND
RO3035, thick 60-mil
3rd layer: Microstrip feed
S11 31 dB @10 3 GHS11=-31 dB @10.3 GHz
500
0.00Ansoft LLC HFSSDesign1XY Plot 2 ANSOFT
-5.00
Curve InfodB(S(2,2))
Setup1 : Sweep1
Name X Ym1 10.3550 -40.2306m2 10.3100 -31.1384
-25.00dB(S
(2,2
))
m2
-45.00
m1
10.00 10.10 10.20 10.30 10.40 10.50 10.60 10.70 10.80Freq [GHz]
Rad. Pattern with max. Realized Gain=+6.2 dBiRad. Pattern with max. Realized Gain 6.2 dBiin E- and H-plane
10.00Ansoft LLC HFSSDesign1XY Plot 3 ANSOFT
m1Curve Info
0.00
5.00
nTot
al)
-10.00
-5.00
dB(R
ealiz
edG
ai
Name X Ym1 0.0000 6.2155
-9000 -6500 -4000 -1500 1000 3500 6000 8500-20.00
-15.00
90.00 65.00 40.00 15.00 10.00 35.00 60.00 85.00Theta [deg]
3 D Rad Pattern of the patch; Realized G=6 2dBi3-D Rad. Pattern of the patch; Realized G=6.2dBi
Feed and Impedance Matching for 1 patch
The patch impedancetransform from 50 to 100 Ohm by ¼ lambda microstrip transformer
2x2 Patch array with a corporate (parallel) feed2x2 Patch array with a corporate (parallel) feed network and 50-to-100-Ohm transforms
2x2 Patch: S11=-22 dB @ 10.3 GHz at Array input
-5.00
-2.50Ansoft LLC HFSSDesign1XY Plot 5 ANSOFT
Curve Info
-12.50
-10.00
-7.50
3))
Name X Ym1 10.3000 -22.2623
-20.00
-17.50
-15.00dB(S
(3,
10.00 10.10 10.20 10.30 10.40 10.50 10.60 10.70 10.80Freq [GHz]
-25.00
-22.50m1
2x2 Patch; Rad. Pattern with realized G=+12.3 dBi;in E and H plane
10.00
15.00Ansoft LLC HFSSDesign1XY Plot 6 ANSOFT
m1Curve Info
0.00
5.00
ainT
otal
)
-10.00
-5.00
dB(R
ealiz
edG
a
Name X Ym1 0.0000 12.3346
-90.00 -65.00 -40.00 -15.00 10.00 35.00 60.00 85.00Theta[deg]
-20.00
-15.00
Theta [deg]
The corporate network for the 16x16 ArrayThe corporate network for the 16x16 Array
.
Gain calculation for existing and operating
a 8x8 dipole array
The example of 8x8 Dipole Array above a solid ground plane:
8fc 10.3 109
03 108
fc o=29 mm
Nx 8 Ny 8 d 0.9 0 Gel 2.14 3 dBix y 0 el
Garray Gel 10 log 2 Nx Nyd0
Garray 25.75 dBi
(The declaring max gain of an operating8x8 dipole array is 25 dBi)(The declaring max. gain of an operating 8x8 dipole array is 25 dBi)
Estimated Array Gain calculation for
the current 16x16 patch array
fc 10.3 109 0
3 108
f o=29mm c 0 fc
Nx 16 Ny 16 d 0.9 0 Gel 6.2 dBi
Garray Gel 10 log 2 Nx Nyd0
0
Garray 32.8 dBi
Business card