CN-122000665-A - Antenna structure, radio frequency device, radar and electronic equipment

Abstract

The embodiment of the application relates to the technical field of communication and provides an antenna structure, a radio frequency device, a radar and electronic equipment, wherein the antenna structure comprises at least one first antenna unit, at least one second antenna unit and at least one connecting unit; the antenna comprises a first antenna unit, a second antenna unit, a connecting unit, a directional radiation mode and an omni-directional radiation mode, wherein a slot structure is arranged on the feeder line side of the first antenna unit, the connecting unit is arranged on the feeder line side of the slot structure, which is far away from the first antenna unit, the connecting unit is used for connecting the first antenna unit and the second antenna unit, when the working frequency band of the antenna structure is a first preset frequency band, the second antenna unit works in the directional radiation mode, and when the working frequency band of the antenna structure is a second preset frequency band, the first antenna unit works in the omni-directional radiation mode.

Inventors

• ZHUANG KAIJIE
• WANG DIAN

Assignees

• 加特兰微电子科技(上海)有限公司

Dates

Publication Date

20260508

Application Date

20250120

Claims (12)

1. 1. An antenna structure, characterized in that the antenna structure comprises at least one first antenna element, at least one second antenna element and at least one connection element; The antenna comprises a first antenna unit, a second antenna unit, a connecting unit, a first antenna unit, a second antenna unit, a first antenna unit and a second antenna unit, wherein a slot structure is arranged on the feeder line side of the first antenna unit, and the slot structure is far away from the feeder line side of the first antenna unit; When the working frequency band of the antenna structure is a first preset frequency band, the second antenna unit works in a directional radiation mode; When the working frequency band of the antenna structure is a second preset frequency band, the first antenna unit works in an omnidirectional radiation mode.
2. 2. The antenna structure of claim 1, wherein the stop band of the slot structure is the same as the first predetermined frequency band.
3. 3. The antenna structure of claim 1, wherein the first antenna element and the second antenna element are disposed in different metal layers, and wherein the first antenna element and the second antenna element at least partially overlap in a direction perpendicular to a reference direction, the reference direction being perpendicular to a plane in which the first antenna element is disposed.
4. 4. The antenna structure of claim 1, wherein the slot structure comprises a first slot disposed along a first predetermined direction and a second slot disposed along a second predetermined direction, the first slot and the second slot are connected, and at least one end of the first slot is provided with the second slot, and the first predetermined direction and the second predetermined direction intersect.
5. 5. The antenna structure of claim 4, wherein the slot structure further comprises a third slot disposed along the first predetermined direction, the third slot, the first slot, and the second slot are connected, and at least one end of the first slot is provided with the third slot.
6. 6. The antenna structure of claim 1, further comprising a metal ring disposed around the second antenna element, the metal ring and the second antenna element disposed in a same metal layer.
7. 7. The antenna structure according to any one of claims 1-6, characterized in that the antenna structure further comprises a ground element and at least one feed element, the feed element being connected to the first antenna element, the ground element being provided with a protrusion or a recess on a side close to the first antenna element.
8. 8. The antenna structure according to claim 7, characterized in that at least one slot unit is provided around the protrusion or the recess.
9. 9. The antenna structure according to claim 7, characterized in that the ground element and/or the feed element further comprises at least one multi-stub structure comprising a body portion comprising a central sub-portion and a plurality of stub sub-portions surrounding the central sub-portion.
10. 10. A radio frequency device comprising the antenna structure of any one of claims 1-9.
11. 11. A radar comprising the radio frequency device of claim 10 mounted in a vehicle and/or around an outside corner radar.
12. 12. An electronic device comprising the radar of claim 11.

Description

Antenna structure, radio frequency device, radar and electronic equipment Technical Field The present application relates to the field of communications technologies, and in particular, to an antenna structure, a radio frequency device, a radar, and an electronic apparatus. Background Ultra-Wideband (UWB) technology is a wireless carrier communication technology that uses nanoscale non-sinusoidal, narrow-wave pulse signals for data transmission. The ultra wideband technology is called because the bandwidth of the transmitted signal is very wide and can cover a frequency band of several gigahertz. At present, UWB technology is widely applied to the fields of data transmission, positioning, ranging and the like. In UWB technology, antennas are a vital component in the system, and the design and performance of antennas directly affect the communication quality and transmission rate. Disclosure of Invention The embodiment of the application provides an antenna structure, a radio frequency device, a radar and electronic equipment, wherein the antenna structure can realize antenna function switching with different direction requirements in different frequency bands. According to some embodiments of the present application, a first aspect of the present application provides an antenna structure, where the antenna structure includes at least one first antenna unit, at least one second antenna unit, and at least one connection unit, a slot structure is disposed on a feeder side of the first antenna unit, the connection unit is disposed on a feeder side of the slot structure away from the first antenna unit, the connection unit connects the first antenna unit and the second antenna unit, when an operating frequency band of the antenna structure is a first preset frequency band, the second antenna unit operates in a directional radiation mode, and when an operating frequency band of the antenna structure is a second preset frequency band, the first antenna unit operates in an omni-directional radiation mode. According to some embodiments of the present application, a second aspect of the embodiments of the present application provides a radio frequency device, including the antenna structure described above. According to some embodiments of the present application, a third aspect of the embodiments of the present application provides a radar including the radio frequency device described above. According to some embodiments of the present application, a fourth aspect of the present application provides an electronic device, including the radar described above. The embodiment of the application provides an antenna structure, a radio frequency device, a radar and electronic equipment, wherein in the antenna structure, a gap structure arranged on a first antenna unit generates resonance and forms a stop band in a first preset frequency band so as to prevent the first antenna unit from participating in radiation, and a second antenna unit is connected with the first antenna unit through a connecting unit, so that when the working frequency band of the antenna structure is the first preset frequency band, the antenna structure mainly depends on the radiation of the second antenna unit, and a directional radiation mode is realized. When the working frequency band of the antenna structure is a second preset frequency band, the gap structure arranged on the first antenna unit does not generate resonance, a stop band cannot be formed, the second antenna unit does not participate in radiation, and the antenna structure mainly depends on the radiation of the first antenna unit, so that an omnidirectional radiation mode is realized. Therefore, the antenna structure can realize antenna function switching with different direction requirements in different frequency bands. Drawings One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, which are not to be construed as limiting the embodiments unless specifically claimed, and in order to more clearly illustrate the embodiments of the present application or the concepts of the conventional art, the drawings which are required to be used in the embodiments will be briefly described below, it will be apparent that the drawings in the following description are merely some embodiments of the present application and that other drawings may be obtained from these drawings by those of ordinary skill in the art without undue burden. Fig. 1 is a schematic diagram of a composition structure of an antenna according to an embodiment of the present application; FIG. 2 is a schematic diagram of the installation positions of anchor points on an automobile according to an embodiment of the present application; fig. 3a is a schematic diagram of an implementation of an antenna provided in the related art; fig. 3b is a schematic diagram of an implementation manner of an antenna according to an embodiment of the present application; Fig.