Antenna with reconfigurable directional diagram

Abstract

The utility model discloses an antenna with a reconfigurable directional diagram, which relates to the field of antennas and comprises a support frame, dipole antenna units and loop antenna units are arranged in different areas of the support frame, a feed network is arranged in the support frame, the dipole antenna units are connected with the feed network, and the loop antenna units are connected with the feed network. The loop antenna unit is connected with a feed network through a matching network, the dipole antenna unit is installed on the supporting frame through a rotating mechanism, the rotating mechanism is used for connecting or disconnecting the dipole antenna unit and the loop antenna unit, and switching between the dipole antenna and the loop antenna is achieved through the rotating mechanism. The omnidirectional antenna and the directional antenna can be conveniently switched so as to adapt to different signal monitoring and positioning tasks.

Description

Technical Field

[0001] This utility model relates to the field of antennas, specifically to an antenna with a reconfigurable radiation pattern. Background Technology

[0002] In the fields of wireless communication and signal monitoring, the performance requirements for antennas are becoming increasingly diverse. In certain applications, such as spectrum monitoring, radio signal search and localization, antennas are needed to perform omnidirectional signal monitoring over a wide area to obtain comprehensive signal information, while also accurately locating the target signal source at specific times to determine the signal's origin direction. Traditional single-pattern antennas struggle to meet these requirements simultaneously; therefore, developing a pattern-reconfigurable antenna has significant practical value. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pattern-reconfigurable antenna to address the deficiencies of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a pattern-reconfigurable antenna, including a support frame, wherein dipole antenna elements and loop antenna elements are arranged in different areas of the support frame, a feed network is arranged inside the support frame, the dipole antenna elements are connected to the feed network, the loop antenna elements are connected to the feed network through a matching network, and the dipole antenna elements are mounted on the support frame by a rotating mechanism, the rotating mechanism being used to connect or disconnect the dipole antenna elements and the loop antenna elements.

[0005] Furthermore, the dipole antenna unit includes two rod-type metal radiators. Antenna slots are provided on both the top and bottom surfaces of the support frame. The two rod-type metal radiators are respectively disposed in the two antenna slots. A rotating mechanism is provided in the antenna slot. The rotating mechanism includes a universal joint and a universal joint shaft. A mounting post is provided in the antenna slot. One end of the rod-type metal radiator is fixed to the universal joint. The universal joint is rotatably connected to the mounting post through the universal joint shaft, so that the rod-type metal radiator can be housed in the antenna slot and connected to the ring antenna unit.

[0006] Furthermore, a contact spring is provided in the antenna slot, the contact spring is connected to the ring antenna unit, and a contact head is connected to the end of the pull rod-type metal radiator away from the universal joint. When the pull rod-type metal radiator is housed in the antenna slot, the contact head contacts the contact spring.

[0007] Furthermore, a locking mechanism is provided in the antenna slot, the locking mechanism including a locking tongue, and a mounting groove is provided on the side wall of the antenna slot. One end of the locking tongue is slidably adapted to the mounting groove. A spring is provided in the mounting groove, and the two ends of the spring are respectively connected to the locking tongue and the support frame. A wedge-shaped surface is provided on the top surface of the locking tongue near the contact head. The wedge-shaped surface is located on the moving path of the contact head. A circular hole is provided on the end of the contact head near the locking tongue. When the contact head contacts the contact spring, the locking tongue is adapted to the circular hole.

[0008] Furthermore, the outer wall of the support frame is provided with a strip groove that connects to the mounting groove, and a locking button is provided at the strip groove. The locking button moves through the strip groove and connects to the locking tongue.

[0009] Furthermore, the locking mechanism also includes a ball-head plunger, which is mounted on the inner bottom wall of the antenna slot and is used to spring up the lever-type metal radiator.

[0010] Furthermore, the power supply network employs a balun-to-unbalance converter.

[0011] The beneficial effects of this utility model are:

[0012] When omnidirectional radiation is required, the dipole antenna element is rotated to the working position via a rotating mechanism, connecting the feed network to the dipole antenna element. At this time, the loop antenna element is in the non-working position and disconnected from the feed network, and the antenna exhibits omnidirectional radiation characteristics, with the signal propagating evenly in all directions. When directional radiation is required, the dipole antenna element is rotated to a suitable directional working position, switching the feed network to the loop antenna. The dipole antenna stops working, and the antenna transmits or receives signals according to the directional radiation pattern of the loop antenna. This allows for convenient switching between omnidirectional and directional antennas to adapt to different signal monitoring and positioning tasks. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a pattern-reconfigurable antenna according to the present invention;

[0014] Figure 2 This is a partial cross-sectional view of a pattern-reconfigurable antenna according to the present invention. Figure 1 ;

[0015] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0016] Figure 4 This is a partial cross-sectional view of a pattern-reconfigurable antenna according to the present invention. Figure 2 ;

[0017] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0018] Figure 6 This is a partial cross-sectional view of a pattern-reconfigurable antenna according to the present invention. Figure 3 ;

[0019] Figure 7 for Figure 6 Enlarged view at point C;

[0020] Figure 8 This is a partial enlarged view of a pattern-reconfigurable antenna according to the present invention;

[0021] Figure 9 This is a schematic diagram of a dipole antenna for a pattern reconfigurable antenna according to the present invention.

[0022] Figure 10 This is a schematic diagram of a loop antenna for a pattern reconfigurable antenna according to the present invention.

[0023] Figure 11 For the direction of the ring antenna Figure 1 ;

[0024] Figure 12 For the direction of the ring antenna Figure 2 ;

[0025] Figure 13 For the direction of the ring antenna Figure 3 ;

[0026] Figure 14 The direction of the dipole antenna Figure 1 ;

[0027] Figure 15 The direction of the dipole antenna Figure 2 ;

[0028] Figure 16 The direction of the dipole antenna Figure 3 ;

[0029] In the diagram, 1-support frame, 2-universal head, 3-universal head pivot, 4-pull rod type metal radiator, 5-antenna slot, 6-mounting post, 7-contact spring, 8-contact head, 9-locking tongue, 10-mounting slot, 11-spring, 12-wedge surface, 13-round hole, 14-locking button, 15-ball plunger. Detailed Implementation

[0030] Example 1

[0031] like Figures 1 to 16As shown, a pattern-reconfigurable antenna includes a support frame 1. Different areas of the support frame 1 are equipped with dipole antenna elements and loop antenna elements. A feed network is provided within the support frame 1. The dipole antenna elements are connected to the feed network, and the loop antenna elements are connected to the feed network through a matching network. The dipole antenna elements are mounted on the support frame 1 via a rotation mechanism. The rotation mechanism is used to connect or disconnect the dipole antenna elements and the loop antenna elements. When omnidirectional radiation is required, the rotation mechanism rotates the dipole antenna elements to the working position, connecting the feed network to the dipole antenna elements. At this time, the loop antenna elements are in a non-working position and disconnected from the feed network, and the antenna exhibits omnidirectional radiation characteristics, with signals propagating uniformly in all directions. When directional radiation is required, the dipole antenna elements are rotated to a suitable directional working position, switching the feed network to the loop antenna. The dipole antenna stops working, and the antenna transmits or receives signals according to the directional radiation pattern of the loop antenna. This allows for convenient switching between omnidirectional and directional antennas to adapt to different signal monitoring and positioning tasks.

[0032] Furthermore, the feed network employs a balun to unbalanced converter to ensure that the signal can be efficiently fed into the antenna, enabling the antenna to generate an approximately uniform radiation field in the horizontal direction, thereby achieving 360-degree all-around signal monitoring. During large-scale signal monitoring, the dipole antenna is in operation, receiving radio signals from all directions and transmitting the signals to subsequent signal processing equipment for analysis.

[0033] Example 2

[0034] Based on Example 1, such as Figures 1 to 8As shown, the dipole antenna unit includes two rod-type metal radiators 4, which are nested from multiple metal rods. Since the resonant frequency of the dipole antenna is related to the antenna length, the antenna length can be changed by stretching or contracting the rod-type metal radiators 4, thereby adjusting its resonant frequency. This allows it to adapt to different operating frequencies within a certain range, ensuring good omnidirectional radiation characteristics within that frequency band. Secondly, the ring antenna unit forms a closed ring structure around the rod-type metal radiators 4. According to the requirements of directional radiation, capacitors, inductors, or resistors are loaded at appropriate positions on the ring antenna. By loading these components, the current distribution and impedance characteristics of the ring antenna can be changed, thereby affecting the radiation direction and achieving directional radiation. Antenna slots 5 are provided on both the top and bottom surfaces of the support frame 1. The two rod-type metal radiators 4 are respectively installed in the two antenna slots 5. A rotating mechanism is provided in the antenna slots 5, including a universal joint 2 and a universal joint shaft 3. A mounting post 6 is provided in the antenna slots 5. One end of the radiator 4 is fixed with a universal joint 2. The universal joint 2 is rotatably connected to the mounting post 6 via a universal joint shaft 3, allowing the rod-type metal radiator 4 to be housed within the antenna slot 5 and connected to the ring antenna unit. A contact spring 7 is provided within the antenna slot 5, connecting to the ring antenna unit. A contact head 8 is connected to the end of the rod-type metal radiator 4 furthest from the universal joint 2. When the rod-type metal radiator 4 is housed within the antenna slot 5, the contact head 8 contacts the contact spring 7. When the rod-type metal radiator 4 rotates out of the antenna slot 5... When the antenna is exposed, the contact head 8 separates from the contact spring 7, causing the loop antenna element to be in an open state and the dipole antenna element to be in an active state. The antenna exhibits omnidirectional radiation characteristics, allowing the signal to propagate evenly in all directions. When the rod-type metal radiator 4 is housed in the antenna slot 5, the contact head 8 contacts the contact spring 7, causing the loop antenna element to be connected to the feed network, making the loop antenna element active and the dipole antenna element in an open state. The antenna then transmits or receives signals according to the directional radiation pattern of the loop antenna.

[0035] Example 3

[0036] Based on Example 2, such as Figures 1 to 8As shown, a locking mechanism is provided inside the antenna slot 5. The locking mechanism includes a locking tongue 9. A mounting groove 10 is provided on the side wall of the antenna slot 5. One end of the locking tongue 9 is slidably adapted to the mounting groove 10. A spring 11 is provided inside the mounting groove 10. The two ends of the spring 11 are respectively connected to the locking tongue 9 and the support frame 1. A wedge-shaped surface 12 is provided on the top surface of the locking tongue 9 near the contact head 8. The wedge-shaped surface 12 is located on the moving path of the contact head 8. A round hole 13 is provided on the end of the contact head 8 near the locking tongue 9. When the contact head 8 contacts... When the contact spring 7 is engaged, the locking tongue 9 fits into the circular hole 13. The outer wall of the support frame 1 has a strip-shaped groove connecting to the mounting groove 10. A locking button 14 is located in the strip-shaped groove, moving through the groove to connect to the locking tongue 9. The locking mechanism also includes a ball-head plunger 15, which is mounted on the inner bottom wall of the antenna slot 5. The ball-head plunger 15 is used to spring up the pull-rod type metal radiator 4. To ensure stable operation after switching between the dipole antenna unit and the loop antenna unit, a locking mechanism is provided. When switching to the loop antenna, the pull rod-type metal radiator 4 is deflected downwards, causing the contact head 8 of the pull rod-type metal radiator 4 to press against the wedge-shaped surface 12 of the locking tongue 9. This causes the locking tongue 9 to press against the spring 11 and move into the mounting groove 10, allowing the pull rod-type metal radiator 4 to press against the ball-head plunger 15 and contact the contact spring 7. At this time, the circular hole 13 is located on the moving path of the locking tongue 9. Under the reaction force of the spring 11, the locking tongue 9 is inserted into the circular hole 13, thereby locking the position of the pull rod-type metal radiator 4 and enabling the loop antenna to be stably positioned. In operation, when switching to the dipole antenna is required, the locking button 14 is pressed, causing the locking button 14 to pull the locking tongue 9 and compress the spring 11 into the mounting slot 10. At this time, the pull rod type metal radiator 4 is lifted upward by the ball head plunger 15, causing the contact head 8 to separate from the contact spring 7, thereby disconnecting the loop antenna from the feed network, and thus enabling the dipole antenna to be stably in operation. This ensures that the loop antenna and the dipole antenna can work stably and independently, making the switching more stable.

Claims

1. A pattern-reconfigurable antenna, comprising a support frame (1), characterized in that, The support frame (1) is provided with dipole antenna units and loop antenna units in different areas. A feed network is provided inside the support frame (1). The dipole antenna units are connected to the feed network. The loop antenna units are connected to the feed network through a matching network. The dipole antenna units are mounted on the support frame (1) through a rotating mechanism. The rotating mechanism is used to connect or disconnect the dipole antenna units and the loop antenna units.

2. The pattern-reconfigurable antenna according to claim 1, characterized in that, The dipole antenna unit includes two rod-type metal radiators (4). The top and bottom surfaces of the support frame (1) are provided with antenna slots (5). The two rod-type metal radiators (4) are respectively arranged in the two antenna slots (5). A rotating mechanism is provided in the antenna slots (5). The rotating mechanism includes a universal joint (2) and a universal joint shaft (3). A mounting post (6) is provided in the antenna slots (5). One end of the rod-type metal radiator (4) is fixed to the universal joint (2). The universal joint (2) is rotatably connected to the mounting post (6) through the universal joint shaft (3) so that the rod-type metal radiator (4) can be housed in the antenna slots (5) and connected to the ring antenna unit.

3. The pattern-reconfigurable antenna according to claim 2, characterized in that, A contact spring (7) is provided in the antenna slot (5). The contact spring (7) is connected to the ring antenna unit. A contact head (8) is connected to the end of the pull rod metal radiator (4) away from the universal head (2). When the pull rod metal radiator (4) is housed in the antenna slot (5), the contact head (8) contacts the contact spring (7).

4. The pattern-reconfigurable antenna according to claim 3, characterized in that, A locking mechanism is provided in the antenna slot (5). The locking mechanism includes a locking tongue (9). An installation slot (10) is provided on the side wall of the antenna slot (5). One end of the locking tongue (9) is slidably adapted to the installation slot (10). A spring (11) is provided in the installation slot (10). The two ends of the spring (11) are respectively connected to the locking tongue (9) and the support frame (1). A wedge-shaped surface (12) is provided on the top surface of the locking tongue (9) near the contact head (8). The wedge-shaped surface (12) is located on the moving path of the contact head (8). A round hole (13) is provided on the end of the contact head (8) near the locking tongue (9). When the contact head (8) contacts the contact spring (7), the locking tongue (9) is adapted to the round hole (13).

5. A pattern-reconfigurable antenna according to claim 4, characterized in that, The outer wall of the support frame (1) is provided with a strip groove that connects to the mounting groove (10). A locking button (14) is provided at the strip groove, and the locking button (14) moves through the strip groove and connects to the locking tongue (9).

6. A pattern-reconfigurable antenna according to claim 4, characterized in that, The locking mechanism also includes a ball plunger (15), which is mounted on the inner bottom wall of the antenna slot (5) and is used to pop up the lever-type metal radiator (4).

7. A pattern-reconfigurable antenna according to claim 1, characterized in that, The power supply network employs a balun-to-unbalance converter.

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