Datasheet

APPLICATION SPECIFICATION
REVISION:
ECR/ECN INFORMATION:
TITLE:
5.9GHz Flexible Antenna Application
Specification
SHEET No.
A
EC No:
615953
19 of 19
DATE:
2019/04/20
DOCUMENT NUMBER:
CREATED / REVISED BY:
CHECKED BY:
APPROVED BY:
AS-2119960100
Liu Hai 2019/03/27
Cheng Kang 2019/03/27
Andy Zhang 2019/03/27
TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).DOC
7.0 THE ANTENNA PERFORMANCE VARIATION WITH CABLE LENGTH
7.1 CABLE LOSS
ITEM
DESCRIPTION
TEST CONDITION
REQUIREMENT
7.1.1
Frequency Range
5GHz~6GHz
5GHz~6GHz
7.1.2
Attenuation
1m cable measured by VNA5071C
≤5.5dB/m
7.2 CABLE LENGTH AFFECT THE ANTENNA PERFORMANCE
Balance antenna resonance is insensitive by cable length, but the cable loss will affect the total
efficiency. Refer to 7.1
7.3 FOR EXAMPLE
Base on the 100mm cable performance, we can mostly compute the 300mm cables.
100mm cable
300mm cable
Frequency
(MHz)
Efficiency (dB)
Efficiency (%)
cable loss
Efficiency (dB)
Efficiency (%)
X
X-LOSS=Y
Y
5800
-1.01
79.29
0.2*5.5dB/m
-2.11
61.55
5820
-1.00
79.44
-2.10
61.67
5840
-0.77
83.78
-1.87
65.03
5860
-0.88
81.75
-1.98
63.46
5880
-1.05
78.44
-2.15
60.89
5900
-1.08
77.97
-2.18
60.52
5920
-1.14
76.93
-2.24
59.71
5940
-0.86
82.11
-1.96
63.74
5960
-1.10
77.66
-2.20
60.28
5980
-0.81
83.06
-1.91
64.48
The data is just for your reference, all accurate performance should be according to the test results
in the OTA chamber