Philips Semiconductors
BGA2717
MMIC wideband amplifier
30 mm
PH
30 mm
IN
PHILIPS
OUT
V+
PH
IN
PHILIPS
DUT C3
C2
C1
OUT
V+
001aab255
Material = FR4; thickness = 0.6 mm, εr = 4.6.
Fig 2. PCB layout and demonstration board showing components.
8.1 Grounding and output impedance
If the grounding is not optimal, the gain becomes less flat and the 50 Ω output matching
becomes worse. If a better output matching to 50 Ω is required, a 12 Ω resistor (R1) can
be placed in series with C3 (see Figure 3). This will significantly improve the output
impedance, at the cost of 1 dB gain and 1 dB output power.
9397 750 13293
Product data sheet
Rev. 02 — 24 September 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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