Attenuator circuit apparatus
First Claim
1. An attenuator circuit apparatus having a plurality of series connected attenuator stages, wherein:
- an attenuator stage having the largest attenuation quantity of said plurality of attenuator stages is composed of a π
-type attenuator stage; and
an attenuator stage having the smallest attenuation quantity of said plurality of attenuator stages is composed of a T-type attenuator stage.
1 Assignment
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Accused Products
Abstract
An attenuator circuit which has a small insertion loss and also has a broad tolerance toward the fluctuation of the element parameter. An attenuator stage having the largest attenuation quantity of a plurality of attenuator stages is formed with a π-type attenuator stage, and an attenuator stage having the smallest attenuation quantity of the plurality of attenuator stages is formed with a T-type attenuator stage. In this way, an attenuator stage having a large attenuation quantity whose precision of the attenuation quantity is apt to be detracted is formed with a π-type attenuator stage so that the precision becomes high, further, an attenuator stage having a small attenuation quantity is formed with a T-type attenuator stage so that the insertion loss can be lowered.
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Citations
4 Claims
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1. An attenuator circuit apparatus having a plurality of series connected attenuator stages, wherein:
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an attenuator stage having the largest attenuation quantity of said plurality of attenuator stages is composed of a π
-type attenuator stage; andan attenuator stage having the smallest attenuation quantity of said plurality of attenuator stages is composed of a T-type attenuator stage. - View Dependent Claims (2, 3, 4)
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Specification