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2001 Sep 27 Rev.1
5
www.phycomp-components.com
Phycomp
Product specification
Surface-mount ceramic
multilayer antennas
2.45 GHz ISM-band antenna for
Bluetooth and WLAN IEEE 802.11b
STANDARD TEST BOARD FOR RADIATION PATTERN AND SWR MEASUREMENTS
HBK090
Dimensions in mm
50
Ω
transmisson
line
SMA
connector
8
14
0.8
14
1.2
antenna
chip
Fig.3 Typical FR4 test board.
HBK088
10
25
50
100
250
10
25
50
Ω
Ω
Ω
100
250
∞
0
10
25
100
250
+ j
− j
2 GHz
3 GHz
2
3
1
2.0
3.0
f (GHz)
SWR
1.0
2.0
3.0
5.0
7.0
6.0
8.0
9.0
10.0
4.0
2.2
2.4
2.6
2.8
HBK089
12 3
Fig.4 Typical SWR and characteristic impedance measurements.
Marker data:
1: SWR = 1.28; f = 2.400 GHz
2: SWR = 1.34; f = 2.450 GHz
3: SWR = 1.34; f = 2.500 GHz.
Marker data:
1: 50.75
Ω/12.36 Ω; f = 2.400 GHz
2: 44.98
Ω/12.83 Ω; f = 2.450 GHz
3: 43.99
Ω/12.27 Ω; f = 2.500 GHz.