Antenna, antenna array and communication system
The present disclosure provides an antenna, an antenna array and a communication system, and belongs to the field of communication technology. The antenna of the present disclosure includes: a phase shifter, including: a dielectric substrate, a first signal electrode, a first reference electrode, a second reference electrode, an interlayer insulating layer, at least one phase control unit; a first transmission structure and a second transmission structure; wherein the first transmission structure is electrically connected to one end of the first signal electrode, and the second transmission structure is electrically connected to the other end of the first signal electrode; and an antenna unit electrically connected to the second transmission structure.
1 . An antenna, comprising:
a phase shifter, comprising: a dielectric substrate, a first signal electrode, a first reference electrode, a second reference electrode, an interlayer insulating layer, at least one phase control unit; wherein the dielectric substrate comprises a first surface and a second surface opposite to each other along a thickness direction of the dielectric substrate; extending directions of the first signal electrode, the first reference electrode, and the second reference electrode are the same; and the first signal electrode, the first reference electrode, and the second reference electrode are all on the first surface of the dielectric substrate, the first reference electrode and the second reference electrode are respectively on both sides of the first signal electrode; the interlayer insulating layer is on a side of the first signal electrode, the first reference electrode and the second reference electrode away from the dielectric substrate; each of the at least one phase control unit comprises at least one membrane bridge on a side of the interlayer insulating layer away from the dielectric substrate; the first signal electrode is at least partially in a space surrounded by the at least one membrane bridge and the dielectric substrate, and two ends of each of the at least one membrane bridge overlap with orthographic projections of the first reference electrode and the second reference electrode on the dielectric substrate, respectively;
a first transmission structure and a second transmission structure; wherein the first transmission structure is electrically connected to one end of the first signal electrode, and the second transmission structure is electrically connected to the other end of the first signal electrode; and
an antenna unit electrically connected to the second transmission structure; and
wherein the first transmission structure comprises: a second signal electrode, a third reference electrode, and a fourth reference electrode on the first surface of the dielectric substrate and having a same extending direction, the third reference electrode and the fourth reference electrode are respectively on two sides of the second signal electrode; and the second signal electrode is electrically connected to the first signal electrode; and
the second transmission structure comprises: a third signal electrode, a fifth reference electrode and a sixth reference electrode on the first surface of the dielectric substrate and having a same extending direction, the fifth reference electrode and the sixth reference electrode are respectively on two sides of the third signal electrode; and the third signal electrode is electrically connected to the first signal electrode.
2 . The antenna of claim 1 , wherein the antenna unit comprises a radiation patch on the first surface of the dielectric substrate, and a seventh reference electrode on the second surface of the dielectric substrate; orthographic projections of the radiation patch and the seventh reference electrode on the dielectric substrate at least partially overlap with each other; and the third signal electrode is electrically connected to the radiation patch.
3 . The antenna of claim 2 , wherein the fifth reference electrode comprises a first main body portion and a first protrusion portion connected to a side of the first main body portion close to the radiation patch; the sixth ground electrode comprises a second main body portion and a second protrusion portion connected to a side of the second main body portion close to the radiation patch; and orthographic projections of the first protrusion portion and the second protrusion portion on the dielectric substrate at least partially overlap with an orthographic projection of the seventh ground electrode on the dielectric substrate.
4 . The antenna of claim 3 , wherein the first main body portion and the first protrusion portion are of a unitary structure; and the second main body portion and the second protrusion portion are of a unitary structure.
5 . The antenna of claim 1 , further comprising at least one direct current bias line; wherein the at least one membrane bridge in each of the at least one phase control unit is connected to one corresponding direct current bias line.
6 . The antenna of claim 1 , wherein the at least one phase control unit comprises a plurality of phase control units, and at least some of the plurality of phase control units have different numbers of membrane bridges.
7 . An antenna array, comprising at least one antenna module, each of which comprises the antenna of claim 1 .
8 . The antenna array of claim 7 , wherein each of the at least one antenna module further comprises a feed structure electrically connected to the antenna.
9 . The antenna array of claim 8 , wherein the feed structure comprises a feed network on the first surface of the dielectric substrate and an eleventh ground electrode on the second surface of the dielectric substrate; an orthographic projection of the feed network on the dielectric substrate overlaps with an orthographic projection of the eleventh ground electrode on the dielectric substrate; and
each antenna module comprises 2 n antennas, the feed network comprises n-stage transmission lines; a transmission line at a 1 st stage is connected to two adjacent antennas, and different transmission lines at the 1 st stage are connected to different antennas; one transmission line at an m th stage is connected to two adjacent transmission lines at an (m−1) th stage, and different transmission lines at the (m−1) th stage are connected to different transmission lines at the m th stage; where n≥2, 2≤m≤n, and both m and n are integers.
10 . The antenna array of claim 7 , wherein the antenna array comprises two antenna modules arranged in a mirror symmetry; and regions where the antenna units in the two antenna modules are located are adjacent to each other.
11 . A communication system, comprising the antenna array of claim 7 .
12 . An antenna, comprising:
a phase shifter, comprising: a dielectric substrate, a first signal electrode, a first reference electrode, a second reference electrode, an interlayer insulating layer, at least one phase control unit; wherein the dielectric substrate comprises a first surface and a second surface opposite to each other along a thickness direction of the dielectric substrate; extending directions of the first signal electrode, the first reference electrode, and the second reference electrode are the same; and the first signal electrode, the first reference electrode, and the second reference electrode are all on the first surface of the dielectric substrate, the first reference electrode and the second reference electrode are respectively on both sides of the first signal electrode; the interlayer insulating layer is on a side of the first signal electrode, the first reference electrode and the second reference electrode away from the dielectric substrate; each of the at least one phase control unit comprises at least one membrane bridge on a side of the interlayer insulating layer away from the dielectric substrate; the first signal electrode is at least partially in a space surrounded by the at least one membrane bridge and the dielectric substrate, and two ends of each of the at least one membrane bridge overlap with orthographic projections of the first reference electrode and the second reference electrode on the dielectric substrate, respectively;
a first transmission structure and a second transmission structure; wherein the first transmission structure is electrically connected to one end of the first signal electrode, and the second transmission structure is electrically connected to the other end of the first signal electrode; and
an antenna unit electrically connected to the second transmission structure, and
the antenna further comprises: a first adapter structure;
wherein the first adapter structure comprises a fourth signal electrode, an eighth reference electrode and a ninth reference electrode on the dielectric substrate and having a same extending direction; the eighth reference electrode and the ninth reference electrode are respectively on two opposite sides of the fourth signal electrode; and the fourth signal electrode is electrically connected to the second signal electrode; and
a distance between the eighth reference electrode and the ninth reference electrode is greater than that between the third reference electrode and the fourth reference electrode.
13 . The antenna of claim 12 , wherein the first adapter structure further comprises a tenth reference electrode on the second surface of the dielectric substrate; and orthographic projections of the fourth signal electrode, the eighth reference electrode and the ninth reference electrode on the dielectric substrate at least partially overlap with an orthographic projection of the tenth reference electrode on the dielectric substrate.
14 . The antenna of claim 13 , wherein the eighth reference electrode and the ninth reference electrode are electrically connected to the tenth reference electrode through vias extending through the dielectric substrate, respectively.
15 . The antenna of claim 12 , wherein the third reference electrode and the eighth reference electrode are of a unitary structure; the fourth reference electrode and the ninth reference electrode are of a unitary structure; and the second signal electrode and the fourth signal electrode are of a unitary structure.
16 . An antenna, comprising:
a phase shifter, comprising: a dielectric substrate, a first signal electrode, a first reference electrode, a second reference electrode, an interlayer insulating layer, at least one phase control unit; wherein the dielectric substrate comprises a first surface and a second surface opposite to each other along a thickness direction of the dielectric substrate; extending directions of the first signal electrode, the first reference electrode, and the second reference electrode are the same; and the first signal electrode, the first reference electrode, and the second reference electrode are all on the first surface of the dielectric substrate, the first reference electrode and the second reference electrode are respectively on both sides of the first signal electrode; the interlayer insulating layer is on a side of the first signal electrode, the first reference electrode and the second reference electrode away from the dielectric substrate; each of the at least one phase control unit comprises at least one membrane bridge on a side of the interlayer insulating layer away from the dielectric substrate; the first signal electrode is at least partially in a space surrounded by the at least one membrane bridge and the dielectric substrate, and two ends of each of the at least one membrane bridge overlap with orthographic projections of the first reference electrode and the second reference electrode on the dielectric substrate, respectively;
a first transmission structure and a second transmission structure; wherein the first transmission structure is electrically connected to one end of the first signal electrode, and the second transmission structure is electrically connected to the other end of the first signal electrode; and
an antenna unit electrically connected to the second transmission structure, and
the antenna further comprises a first switch unit on the dielectric substrate for providing a bias voltage signal to the at least one membrane bridge upon receiving a first control signal; and
wherein the first switch unit comprises a first switch transistor having a first electrode as a bias voltage input terminal of the first switch unit, a second electrode as a first output terminal of the first switch unit, and a control electrode as a first control terminal of the first switch unit, and the first switch transistor is configured to conduct the first electrode and the second electrode upon receiving the first control signal by the control electrode.
17 . The antenna of claim 16 , further comprising a second switch unit on the dielectric substrate for electrically connecting a signal line with the membrane bridges upon receiving a second control signal.
18 . The antenna of claim 16 , wherein the first switch unit is further configured to electrically connect a signal line with the membrane bridges upon receiving a second control signal.