CN-122000654-A - Microstrip phase shifter and electronic equipment

Abstract

The invention relates to a microstrip phase shifter and electronic equipment, the microstrip phase shifter comprises a medium substrate, a microstrip line and a control circuit, wherein the microstrip line is arranged on the surface of the medium substrate and comprises a main microstrip line, a signal switch component and a phase shifting branch connected in parallel with the main microstrip line, the phase shifting branch comprises a first branch and a second branch, the signal switch component comprises a first switch and a second switch and is respectively arranged at the connection parts of the first branch and the main microstrip line, the control circuit controls the on and off of the first switch and the second switch, when the first target phase shift is realized, the control circuit controls the second switch to be turned on, the first switch is turned off, the first branch is connected with the line, the second branch is turned off, the second branch is connected with the line, and the first branch is short-circuited, and only the first branch or the second branch is connected with the second branch, so that the target phase shift can be realized, and the circuit area is favorably reduced.

Inventors

• YAN XIAXIA
• Chi Jingran

Assignees

• 信维通信（江苏）有限公司

Dates

Publication Date

20260508

Application Date

20260126

Claims (10)

1. 1. A microstrip phase shifter, comprising: A dielectric substrate; The microstrip line is arranged on the surface of the medium substrate, the microstrip line comprises a main microstrip line, a signal switch assembly and a phase-shifting branch knot, the phase-shifting branch knot is connected with the main microstrip line in parallel, the signal switch assembly comprises a first switch and a second switch, the first switch and the second switch are both connected to the main microstrip line, the phase-shifting branch knot comprises a first branch knot and a second branch knot, the first switch is arranged at the joint of the first branch knot and the main microstrip line, and the second switch is arranged at the joint of the second branch knot and the main microstrip line; the control circuit is used for controlling the first switch and the second switch to be turned on or off; When the first branch is used for realizing a first target phase shift, the control circuit controls the second switch to be conducted and the first switch to be disconnected, the first branch is connected into the main microstrip line, and the second branch is short-circuited; When the second branch is used for achieving the second target phase shift, the control circuit controls the first switch to be conducted and the second switch to be disconnected, the second branch is connected into the main microstrip line, and the first branch is short-circuited.
2. 2. The microstrip phase shifter according to claim 1, wherein, The microstrip phase shifter further comprises a first branch switch assembly, wherein the first branch switch assembly comprises a third switch, a fourth switch and a fifth switch, and the first branch switch assembly is connected with the control circuit; The shape of first branch is the U type, third switch, fourth switch and fifth switch all follow the U type first branch's length direction cross-over connection in first branch, the third switch with the fourth switch is adjacent, the fifth switch set up in first branch is close to first switch's one end, the third switch fourth switch with fifth switch interval is the distance in advance, control circuit control first branch switch module switches on or off, first branch switch module is used for changing first branch switches in the length of main microstrip line.
3. 3. The microstrip phase shifter according to claim 2, wherein, When the first branch is used for realizing first target phase shift at a first frequency point, the control circuit controls the second switch, the third switch and the fifth switch to be on and controls the first switch and the fourth switch to be off; Or when the first branch is used for realizing the first target phase shift at the second frequency point, the control circuit controls the second switch, the fourth switch and the fifth switch to be on, and the first switch and the third switch to be off, and the length of the first branch connected to the main microstrip line at the first frequency point is longer than that of the first branch connected to the main microstrip line at the second frequency point.
4. 4. The microstrip phase shifter according to claim 2, wherein, The microstrip phase shifter further comprises a second branch switch assembly, wherein the second branch switch assembly comprises a sixth switch, a seventh switch and an eighth switch, and the second branch switch assembly is connected with the control circuit; The shape of second branch is the U type, sixth switch, seventh switch and eighth switch all follow the U type the length direction cross-over connection of second branch in the second branch, sixth switch with seventh switch is adjacent, eighth switch set up in the second branch is close to the one end of second switch, sixth switch seventh switch with eighth switch interval preset distance, control circuit control second branch switch module switches on or off, second branch switch module is used for changing the second branch inserts the length of main microstrip line.
5. 5. The microstrip phase shifter of claim 4 wherein When the second branch is used for realizing second target phase shift at a first frequency point, the control circuit controls the first switch, the sixth switch and the eighth switch to be turned on, and the second switch and the seventh switch to be turned off; or when the second branch is used for realizing the second target phase shift at the second frequency point, the first switch, the seventh switch and the eighth switch are turned on, the second switch and the sixth switch are turned off, and the length of the second branch connected to the main microstrip line at the first frequency point is longer than that of the second branch connected to the main microstrip line at the second frequency point.
6. 6. The microstrip phase shifter of claim 1, wherein The microstrip line also comprises two signal lines, the microstrip phase shifter also comprises a power divider, one end of the power divider is connected with the main microstrip line, the other end of the power divider comprises two output ports, one output port is connected with one signal line, and the power divider is used for distributing an input signal of the main microstrip line to the two signal lines.
7. 7. The microstrip phase shifter of claim 5 wherein The microstrip phase shifter further comprises an isolation resistor, one end of the isolation resistor is connected with one output port, the other end of the isolation resistor is connected with the other output port, and the isolation resistor is used for isolating signals.
8. 8. The microstrip phase shifter according to claim 1, wherein, The main microstrip line comprises a first microstrip line, a second microstrip line and a third microstrip line, one end of the first microstrip line is a signal input end, the other end of the first microstrip line is connected with one end of the second microstrip line, the other end of the second microstrip line is connected with one end of the third microstrip line, the other end of the third microstrip line is connected with one end of the power divider, and one end, close to the second microstrip line, of the first microstrip line, two ends of the second microstrip line and one end, close to the second microstrip line, of the third microstrip line are arranged in a chamfering mode; The first switch is arranged at the joint of the first microstrip line and the second microstrip line, and the second switch is arranged at the joint of the second microstrip line and the third microstrip line.
9. 9. The microstrip phase shifter according to claim 7, wherein, The corner of the signal line is provided with a chamfer, and the chamfer is used for improving impedance continuity of the microstrip line.
10. 10. An electronic device comprising a microstrip phase shifter according to claims 1-9.

Description

Microstrip phase shifter and electronic equipment Technical Field The embodiment of the invention relates to the technical field of communication, in particular to a microstrip phase shifter and electronic equipment. Background Currently, the coverage and optimization requirements of the modern mobile communication technology on a wireless network are more and more strict, an electrically tunable antenna is widely applied, and a phase shifter is a key component of the electrically tunable antenna. In the process of realizing the invention, the inventor of the invention finds that the current microstrip phase shifter comprises a dielectric substrate and a microstrip line, the microstrip line comprises a main microstrip line, a control circuit and a plurality of phase shifting branches, the plurality of phase shifting branches are fixedly connected in parallel with the main microstrip line, the control circuit is connected with the microstrip phase shifter in a conductive way so as to enable the plurality of phase shifting branches to complete target phase shifting, but the plurality of phase shifting branches are connected in parallel so that the circuit area is larger and the insertion loss is higher. Disclosure of Invention In view of the foregoing, embodiments of the present invention provide a microstrip phase shifter and an electronic device, which overcome the foregoing problems. According to an aspect of the present invention, there is provided a microstrip phase shifter, including a dielectric substrate, a microstrip line and a control circuit, where the microstrip line is disposed on a surface of the dielectric substrate, the microstrip line includes a main microstrip line, a signal switch assembly and a phase shift branch, the phase shift branch is connected in parallel with the main microstrip line, the signal switch assembly includes a first switch and a second switch, the first switch and the second switch are both connected to the main microstrip line, the phase shift branch includes a first branch and a second branch, the first switch is disposed at a connection position of the first branch and the main microstrip line, the second switch is disposed at a connection position of the second branch and the main microstrip line, the signal switch assembly is connected with the control circuit, the control circuit is configured to control the first switch and the second switch to be turned on or off, when the first branch is used to implement a first target phase shift, the control circuit is configured to control the second switch and the first switch to be turned off, the first branch is connected to the second branch is connected to be turned on or off, and when the second branch is connected to the second microstrip line is used to implement a target phase shift, and the second branch is connected to be turned on or off. In an optional implementation manner, the microstrip phase shifter further comprises a first branch switch assembly, the first branch switch assembly comprises a third switch, a fourth switch and a fifth switch, the first branch switch assembly is connected with the control circuit, the first branch is in a U shape, the third switch, the fourth switch and the fifth switch are all connected with the first branch in a bridging manner along the length direction of the U shape, the third switch is adjacent to the fourth switch, the fifth switch is arranged at one end, close to the first switch, of the first branch, the third switch, the fourth switch and the fifth switch are separated by a preset distance, the control circuit controls the first branch switch assembly to be connected or disconnected, and the first branch switch assembly is used for changing the length of the first branch connected with the main microstrip line. In an optional implementation manner, when the first branch is used for realizing the first target phase shift at the first frequency point, the control circuit controls the second switch, the third switch and the fifth switch to be turned on and the first switch and the fourth switch to be turned off, or when the first branch is used for realizing the first target phase shift at the second frequency point, the control circuit controls the second switch, the fourth switch and the fifth switch to be turned on and the first switch and the third switch to be turned off, and the length of the first branch connected into the main microstrip line at the first frequency point is longer than that of the first branch connected into the main microstrip line at the second frequency point. In an optional implementation manner, the microstrip phase shifter further includes a second branch switch assembly, the second branch switch assembly includes a sixth switch, a seventh switch and an eighth switch, the second branch switch assembly is connected with the control circuit, the shape of the second branch is U-shaped, the sixth switch, the seventh switch and the eighth switc