Practical MMIC Design
Filled with real-world design techniques and rules of thumb, this practical resource offers professionals a unique look into the day-to-day practices of MMIC production and the economics associated with it.
TABLE OF CONTENTS Practical MMIC Design
5.8: Switched-Path Attenuators
5.8 Switched-Path Attenuators
Switched-path attenuators [149 151] are constructed from two SPDT switches with two paths in between, and each path has a different attenuation, as shown in Figure 5.142. The attenuating path is usually constructed from a resistive-T, Pi, or bridged-T network of resistors [152]. An example 6-bit digital switched-path attenuator MMIC is shown in Figure 5.143, which has a bandwidth from 0.5 to 16 GHz.
Figure 5.142: Switched-path digital attenuator.
Figure 5.143: A 6-bit digital switched-path attenuator MMIC, 0.5 to 16 GHz. ( Source Bookham Inc., 2006. All Rights Reserved.)
Copyright Artech House, Inc. 2006 under license agreement with Books24x7
