Antenna Design Requirements; Antenna Design Indicators - Huawei MU509 Series Hardware Manual

HUAWEI MU509 Series HSDPA LGA Module
Hardware Guide
Item
GSM900
GSM1800
GSM1900
Band I(W2100)
Band II(W1900)
Band VIII(W900)
Band V(W850)

4.6 Antenna Design Requirements

4.6.1 Antenna Design Indicators

Antenna Efficiency
Antenna efficiency is the ratio of the input power to the radiated or received power of
an antenna. The radiated power of an antenna is always lower than the input power
due to the following antenna losses: return loss, material loss, and coupling loss. The
efficiency of an antenna relates to its electrical dimensions. To be specific, the
antenna efficiency increases with the electrical dimensions. In addition, the
transmission cable from the antenna port of MU509 to the antenna is also part of the
antenna. The cable loss increases with the cable length and the frequency. It is
recommended that the cable loss be as low as possible, for example, U.FL-LP-088
made by HRS.
The following antenna efficiency (free space) is recommended for MU509 to ensure
high radio performance of the module: Efficiency of the master antenna: ≥ 40%
(below 960 MHz); ≥ 50% (over 1710 MHz). In addition, the efficiency should be
tested with the transmission cable.
S11 or VSWR
S11 indicates the degree to which the input impedance of an antenna matches the
reference impedance (50 Ω). S11 shows the resonance feature and impedance
bandwidth of an antenna. Voltage standing wave ratio (VSWR) is another expression
Issue 09 (2014-03-06)
3GPP Protocol
Claim (dBm)
8PSK(1Tx Slot) 24–30
GMSK(1Tx Slot) 31–35
8PSK(1Tx Slot) 24–30
GMSK(1Tx Slot) 28–32
8PSK(1Tx Slot) 23–29
GMSK(1Tx Slot) 28–32
8PSK(1Tx Slot) 23–29
21–25
21–25
21–25
21–25
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Copyright © Huawei Technologies Co., Ltd.
RF Specifications
MU509 Test Value (dBm)
Min. Typ.
25.5 27
31 32.5
25.5 27
28 29.5
24.5 26
28 29.5
24.5 26
21.5 23
21.5 23
21.5 23
21.5 23
Max.
28.5
34
28.5
31
27.5
31
27.5
24.5
24.5
24.5
24 .5
52