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MBF93xx
Surface Acoustic Wave (SAW) Filters
for Mobile and Portable Phones
September 1997
s
MBF93xxs ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Oki Semiconductor
MBF93xx
Surface Acoustic Wave (SAW) Filters
DESCRIPTION
The new MBF93xx Surface Acoustic Wave (SAW) filters use Oki’s third generation design and manufac-
turing technology to achieve a high out-of-band attenuation, low insertion loss, and low manufacturing
cost in an industry standard 6-pin package, 1.6-mm thick and 3.8-mm square.
These 50-Ω matched bandpass microwave RF filters are designed for the worldwide standard wireless
voice and data communications frequencies being used by cellular and wireless local-loop service pro-
viders. They have achieved design acceptance by leading wireless handset manufacturers in North
America, Europe, and Asia.
Oki’s lowest insertion loss SAW filters and high performance GaAs devices are used to reduce transmit-
ter complexity. Receiver designs can be simplified by using the higher Tx frequency attenuation SAW
filters.
These devices take advantage of Oki’s 15-year plus RF communications component manufacturing expe-
rience and very high volume manufacturing capability to meet true customer demands.
FEATURES
• Low insertion loss
• Small size, light weight
• 50-Ω matched
SAW Filter Summary
[1]
Part
Number
MBF9311
MBF9317
MBF9321
MBF9323
MBF9332
Description
CDMA, AMPS, & TDMA Receive filter for North America standards
CDMA, AMPS, & TDMA Transmit filter for North America standards
GSM Transmit filter for European standards
GSM Receive filter for European standards
ETACS Receive filter for world wide ETACS standard
Pass Frequency
(MHz)
869 to 894
824 to 849
890 to 915
935 to 960
917 to 950
1850 to 1910
1930 to 1990
Insertion
Loss (dB)
<3.0
<3.5
<3.5
<4.0
<5.0
<5.0
<5.0
Stop Frequency
(MHz)
824 to 849
869 to 894
935 to 980
890 to 915
872 to 900
1930 to 1990
1850 to 1910
Attenuation
(dB)
>35
>30
>20
>20
>25
>18
>20
• 6-pin SMD package
• High reliability
MBF9361B PCS, CDMA, & TDMA Transmit filter for North America standards
MBF9362B PCS, CDMA, & TDMA Receive filter for North America standards
1. All parts in 6-pin ceramic square package (3.8 mm x 3.8 mm) by 1.6-mm thick with system matched 50-Ω I/O
Oki Semiconductor
1
s
MBF93xx
s
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
PIN CONFIGURATION
3.8 ±0.2
1.6
0.6
1.9
1
2
3
1.0
Pin Number
1, 3, 4, 6
2
5
Signal
Ground
Input
Output
3.8 ±0.2
6
5
4
1.27
1.27
BLOCK DIAGRAM
VCO
Ant
DUPLEXER
Rx-BPF
Rx-BPF
RF Amp
SAW
Mixer
IF Amp
IF-BPF
DEMO
Tx-BPF
Power Amp
SAW
Tx-BPF
RF Amp
Mixer
MOD
VCO
2
Oki Semiconductor
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
s
MBF93xx
s
MBF9311 Electrical Characteristics (-30 to +85°C)
Parameter
Center Frequency (F
C
)
Bandwidth (BW)
Insertion Loss across BW
Return Loss across BW
Stop Band Attenuation
Frequency (MHz)
Fr 881.5
Fr ±12.5
869–894
0.3 to 824
824 to 849
979 to 1004
1008 to 1114
Terminating Impedance = 50
Ω
Min.
–
–
–
10
20
35
25
20
Max.
–
–
3.0
–
–
–
–
–
Units
MHz
MHz
dB
dB
dB
dB
dB
dB
CH1
CH2
S11 log MAG
S21 log MAG
CDMA R–INT
5 dB/
10 dB/
REF 0 db
REF 0 db
1
1. –12.648 dB
1. –2.5314 dB
869.000 000 MHz
2. –16.655 dB
894 MHz
3. –.8658 dB
824 MHz
4. –1.5369 dB
849 MHz
PASS 2
2
Cor 1
3
4
1
Hld
2
3
4
Cor
2. –2.1717 dB
894 MHz
3. –42.869 dB
824 MHz
4. –52.859 dB
849 MHz
PASS
Hld
START
760.000 000 MHz
STOP
960.000 000 MHz
Figure 1. MBF9311 Frequency Response
Oki Semiconductor
3
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