PP'1

1
Perspective view of the differential BPF _at_ 2.45
GHz

• Specification
• 2.45 GHz
• Er7.8
• tanD0.002
• Conductor thickness8um
• Substrate thickness44um
• Total 12 layers
• Total size
• 3 x 2.65 x 0.53 mm3

2
Perspective view of the differential BPF _at_ 5.25
GHz

• Specification
• 5.25 GHz
• Er7.8
• tanD0.002
• Conductor thickness8um
• Substrate thickness44um
• Total 12 layers
• Total size
• 1.7 x 1.9 x 0.53 mm3

3
Schematic and layout of antenna switch module
4
Measurement method of ASM

• The shunt capacitor avoid noise from the power
  supply into circuit.
• The series inductor is a RF choke
• The resister can control the biasing current
  through the diodes
• A good terminator is required to absorb scattered
  wave when other four ports are connected to a
  four-port VNA