Control buffer circuit and radio frequency switch for dual mode operation
First Claim
Patent Images
1. A control buffer circuit comprising:
- a voltage detection circuit configured to detect whether a received voltage is a negative voltage or a ground voltage and provide a voltage detection signal based on a result of the detecting; and
a buffer circuit configured to provide a switching signal based on the voltage detection signal,wherein the switching signal comprises a positive voltage as a switching-on level voltage and includes one of the ground voltage and the negative voltage as a switching-off level voltage.
2 Assignments
0 Petitions
Accused Products
Abstract
A control buffer circuit includes a voltage detection circuit configured to detect whether a received voltage is a negative voltage or a ground voltage and provide a voltage detection signal based on a result of the detecting, and a buffer circuit configured to provide a switching signal based on the voltage detection signal, wherein the switching signal comprises a positive voltage as a switching-on level voltage and includes one or more of the ground voltage and the negative voltage as a switching-off level voltage.
3 Citations
20 Claims
-
1. A control buffer circuit comprising:
-
a voltage detection circuit configured to detect whether a received voltage is a negative voltage or a ground voltage and provide a voltage detection signal based on a result of the detecting; and a buffer circuit configured to provide a switching signal based on the voltage detection signal, wherein the switching signal comprises a positive voltage as a switching-on level voltage and includes one of the ground voltage and the negative voltage as a switching-off level voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A radio frequency switch comprising:
-
a control buffer circuit configured to generate a switching signal based on a band selection signal and a received voltage; and a switching circuit configured to switch at least one signal path in response to receiving the switching signal, wherein the control buffer circuit comprises; a voltage detection circuit configured to detect a voltage magnitude of the received voltage and provide a voltage detection signal; and a buffer circuit configured to provide a switching signal based on the received voltage detection signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A radio frequency switch comprising:
-
a voltage detection circuit configured to; detect a magnitude of a voltage; and generate a voltage detection signal based on the detected magnitude of the voltage; a control buffer configured to generate a switching signal based on a value of the voltage detection signal; and a switching circuit configured to perform an operation of switching one or more signal paths in response to receiving the switching signal. - View Dependent Claims (18, 19, 20)
-
Specification