mga-31189 Avago Technologies, mga-31189 Datasheet - Page 3

• Manufacturer Part Number: mga-31189
• Description: 70 To 500 Mhz Ampliier For If Applications Using The Avago Technologies Mga-31189 Ampliier
• Manufacturer: Avago Technologies

CPWG Design
The dimensions of the CPWG lines can easily be
determined using AppCAD, a free and easy-to-use RF
simulation software package available from Avago. As
shown in Figure 4, the overall thickness of the board is
about 62 mils, which allows SMA connectors from EF
Johnson (142-0701-851) to be slipped on at both board
edges. With a 20-mils diameter center pin, this requires
Figure 4. Demonstration board cross sectional view
Figure 5. CPWG design using AppCAD
3
Bottom Layer
Inner Layer
Top Layer
0.5 oz. Cu
Dielectric Material (RO 4350 B) = 10 mil
Support Material (FR4) ≈ 50 mil
0.5 oz. Cu (0.7 mil)
0.5 oz. Cu
0.5 oz. Cu
the demonstration board transmission line width to be
slightly wider to accommodate the SMA center pin. In this
demonstration board, 22 mils was chosen, and the Z
170 MHz is 50.1 :. There is some degree of freedom for
the designer to determine the transmission line width
as long the resultant Z
design with limited space.
0.5 oz. Cu
o
is close to 50 : and able to fit a
Thickness
≈ 62 mil
Total
o
at