ACFM-7103-BLK Avago Technologies US Inc., ACFM-7103-BLK Datasheet - Page 6

• Manufacturer Part Number: ACFM-7103-BLK
• Description: FBAR Quintplexer
• Manufacturer: Avago Technologies US Inc.
• Series: -r

Specifications of ACFM-7103-BLK

• Frequency Bands (low / High): 824MHz ~ 894MHz / 1.85GHz ~ 1.99GHz
• Low Band Attenuation (min / Max Db): 55.00dB / -
• High Band Attenuation (min / Max Db): 50.00dB / -
• Return Loss (low Band / High Band): 17dB / 15dB
• Mounting Type: Surface Mount
• Package / Case: 6-SMD, No Lead
• Lead Free Status / Rohs Status: Contains lead / RoHS non-compliant

Applications Information
The ACFM-7103 quintplexer has two antenna connections,
one common to the Cellular and PCS Band duplexers, and
a separate antenna for the GPS filter.
Dual Antenna Operation
For applications in which a separate GPS antenna is
preferred, the ACFM-7103 can be connected as shown in
Figure 1.
A series-L, shunt-C network is used to match the
impedance of the Ant-1 port (duplexers) to the phone
antenna. A nominal inductance value of 5.1 nH and ca-
pacitance of 1.0 pF matches the Ant-1 port to 50 ohms.
The GPS antenna (Ant-2) is internally matched to 50 ohms
and needs no external components.
Figure 1. Dual Antenna Application.
6
GPS
Port 4
GPS
Ant
Ant-2
Port 7
Cell Rx
Port 6
5.1 nH
Phone
Ant
PCS Rx
Port 3
Ant-1
Port 1
1.0 pF
Cell Tx
Port 5
PCS Tx
Port 2
Single Antenna Operation
Optionally, if single antenna operation is required, the
Ant-1 and Ant-2 ports of the ACFM-7103 can be connected
together as in Figure 2.
A single 5.1 nH inductor connected between Ant-1 and
Ant-2 is all that is required to match both antenna ports to
a common 50-ohm antenna.
Figure 2. Single Antenna Application.
Matching Components
The L and C values shown here were selected to match
the ACFM-7103 to 50 ohms. These values should be con-
sidered to be nominal. Since every application is different,
these nominal values should be adjusted to provide the
best impedance match for the user’s particular circuit
board, performance requirements, and interface to
related components.
The L and C matching components should be located in
close proximity to the quintplexer as shown in the recom-
mended PCB layouts.
For both antenna configurations, the maximum variation
for the matching components should be ±5% for the
inductor and ±0.2 pF for the capacitor. The inductor should
be of the high Q type (e.g., Murata LQW15AN5N1D00D).
GPS
Port 4
Ant
Ant-2
Port 7
Cell Rx
5.1 nH
Port 6
PCS Rx
Port 3
Ant-1
Port 1
Cell Tx
Port 5
PCS Tx
Port 2