Switch-type phase shifter
First Claim
1. A switch-type phase shifter, comprising at least one phase shifting unit, the phase shifting unit comprising two half circuits and a first switch connected to the half circuits and receiving a first control signal, and each of the half circuits comprising:
- a first variable capacitor having a first end coupled to an input node of the half circuit and a second end coupled to a control node of the half circuit;
a second variable capacitor having a first end coupled to an output node of the half circuit and a second end coupled to the control node of the half circuit;
a second switch having a first end coupled to the output node of the half circuit, a second end coupled to the input node of the half circuit, and a third end coupled to the control node of the half circuit and receiving a second control signal; and
a variable inductor having a first end coupled to the input node of the half circuit and a second end coupled to the output end of the half circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
A switch-type phase shifter including a phase shifting unit is provided. The phase shifting unit includes two half circuits and a first switch connected to the half circuits and receiving a first control signal. Each half circuit includes a first variable capacitor, a second variable capacitor, a second switch and a variable inductor. The two ends of the first variable capacitor are coupled to the input and the control nodes of the half circuit respectively. The two ends of the second variable capacitor are coupled to the output and control nodes of the half circuit respectively. The first and second ends of the second switch are coupled to the output and input nodes respectively, and the third end thereof is coupled to the control node and receives a second control signal. The two ends of the variable inductor are coupled to the input and output nodes respectively.
24 Citations
17 Claims
-
1. A switch-type phase shifter, comprising at least one phase shifting unit, the phase shifting unit comprising two half circuits and a first switch connected to the half circuits and receiving a first control signal, and each of the half circuits comprising:
-
a first variable capacitor having a first end coupled to an input node of the half circuit and a second end coupled to a control node of the half circuit; a second variable capacitor having a first end coupled to an output node of the half circuit and a second end coupled to the control node of the half circuit; a second switch having a first end coupled to the output node of the half circuit, a second end coupled to the input node of the half circuit, and a third end coupled to the control node of the half circuit and receiving a second control signal; and a variable inductor having a first end coupled to the input node of the half circuit and a second end coupled to the output end of the half circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
Specification