Attenuator and portable telephone terminal apparatus using...

Details Attenuator and portable telephone terminal apparatus using... Attenuator and portable telephone terminal apparatus using...

2007-07-17

2007-07-17

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C327S306000, C333S08100R

Reexamination Certificate

active

10880391

ABSTRACT:
Provided are: at least one or more series variable resistors implemented by field effect transistors connected to a signal line A; and at least one or more shunt variable resistors implemented by field effect transistors connected between a signal outputting section A and a reference potential section GND. Further provided are: at least one or more series variable resistors implemented by field effect transistors connected to a signal line B arranged in parallel to the signal line A; and at least one or more shunt variable resistors implemented by field effect transistors connected between a signal outputting section B and a reference potential section GND.

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