Page 36 - Complete Wireless Design
P. 36
Wireless Essentials
Wireless Essentials 35
Figure 1.43 (a) Distributed DC bias decoupling; (b) equivalent
lumped circuit.
bias resistor for a monolithic microwave integrated circuit (MMIC)]; C behaves
as an open stub to work as an RF short circuit (by being exactly /4), and the
fact that it is wide lowers its impedance even further.
Transformer. The narrowband transformer of Fig. 1.44 is employed for
resistive terminations only, such as those between different values of
microstrip, between two resistive stages, or between two reactive stages
with the reactances tuned out by a capacitor or inductor. The transformer’s
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