CN219226614U - UHF antenna with mixed operation mode - Google Patents

Abstract

The utility model relates to the technical field of UHF antennas, in particular to a UHF antenna with a mixed working mode. The technical proposal comprises: the antenna housing, the inside of antenna housing is provided with top radiator subassembly and bottom radiator subassembly, the inside of antenna housing just is located and is provided with tuned circuit between top radiator subassembly and the bottom radiator subassembly, tuned circuit is equipped with a resistance and a electric capacity and a plurality of inductance components and parts and a plurality of electronic switch, reaches the purpose of tuning through the different inductance components of different electronic switch control circuit loading, tuned circuit passes through radio frequency cable subassembly and top radiator subassembly and bottom radiator subassembly electric connection. The antenna of the present utility model operates in a hybrid mode of a receive broadband matching mode and a transmit tuning mode. The gain of the transmitting part or the receiving part of the communication system can be increased, so that the system working distance can be increased.

Description

UHF antenna with mixed operation mode

Technical Field

The utility model relates to the technical field of UHF antennas, in particular to a UHF antenna with a mixed working mode.

Background

The UHF antenna is an antenna based on ultrahigh frequency radio waves, and the radio waves in the frequency band can be transmitted and received by a small and short antenna, so that the UHF antenna is suitable for mobile communication, such as air wireless communication and the like.

The UHF antenna is improved correspondingly to be applied to the helicopter, and the loading capacity of the helicopter is smaller, so that the requirements on the appearance and the weight of an airborne product are higher, and the electrical performance requirements on the antenna are very harsh. To this end we propose a UHF antenna of hybrid operation mode that can improve antenna performance and reduce size and weight requirements.

Disclosure of Invention

The utility model aims to solve the problems in the background art and provides a UHF antenna with a mixed working mode.

The technical scheme of the utility model is as follows: the UHF antenna in the mixed working mode comprises an antenna housing, wherein a top radiator assembly and a bottom radiator assembly are arranged in the antenna housing, a tuning circuit is arranged in the antenna housing and between the top radiator assembly and the bottom radiator assembly, the tuning circuit is provided with a resistor, a capacitor, a plurality of inductance components and a plurality of electronic switches, different inductance components are loaded through different electronic switch control circuits to achieve the purpose of tuning, the tuning circuit is electrically connected with the top radiator assembly and the bottom radiator assembly through a radio frequency cable assembly, the bottom end of the antenna housing is fixedly connected with a bottom plate, the bottom of the bottom plate is fixedly connected with a control circuit, and the control circuit is electrically connected with the tuning circuit through the radio frequency cable assembly.

Preferably, the bottom board is connected with a bottom allocation circuit, and the bottom allocation circuit is electrically connected with the control circuit.

Preferably, the bottom blending circuit includes a capacitor, a resistor, a seventh inductance element, and a seventh switch electrically connected.

Preferably, the bottom blending circuit is provided with a radio frequency connector pin which can be electrically connected with the seventh switch, and the bottom plate is externally connected with a radio frequency connector corresponding to the radio frequency connector pin.

Preferably, the bottom of the radome and the bottom plate are provided with mounting holes, and the bottom plate passes through the mounting holes through connecting bolts to be fixedly connected to the bottom of the radome.

Preferably, the inductance element in the tuning circuit includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor, and the electronic switch in the tuning circuit includes a first switch, a second switch, a third switch, a fourth switch, a fifth switch and a sixth switch.

Preferably, the first capacitor is electrically connected to the first switch, the second capacitor is electrically connected to the second switch, the third capacitor is electrically connected to the third switch, the fourth capacitor is electrically connected to the fourth switch, the fifth capacitor is electrically connected to the fifth switch, and the sixth capacitor is electrically connected to the sixth switch.

Compared with the prior art, the utility model has the following beneficial technical effects:

the antenna operates in a hybrid mode of a receive broadband matching mode and a transmit tuning mode. The gain of the transmitting part or the receiving part of the communication system can be increased, so that the system working distance can be increased.

Drawings

Fig. 1 is a schematic structural diagram of a UHF antenna in a hybrid mode of operation;

FIG. 2 is an inverted view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is an enlarged view of the portion I of FIG. 3;

fig. 5 is a schematic diagram of the connection of the control circuit and the bottom blending circuit of fig. 3.

Reference numerals: 1. an antenna housing;

2. a top radiator assembly;

3. a tuning circuit; 3-1, a first inductance element; 3-2, a second inductance element; 3-3, a third inductance element; 3-4, a fourth inductance element; 3-5, a fifth inductance element; 3-6, a sixth inductive element;

4. a radio frequency cable assembly;

5. a bottom radiator assembly;

6. a control circuit; 6-1, a first switch; 6-2, a second switch; 6-3, a third switch; 6-4, a fourth switch; 6-5, a fifth switch; 6-6, a sixth switch; 6-7, a seventh switch;

7. a bottom plate; 8. a mounting hole; 9. a bottom deployment circuit; 9-1, a seventh inductive element; 9-2, capacitance; 9-3, resistance; 10. a connecting bolt; 11. a radio frequency connector pin; 12. a radio frequency connector.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Example 1

As shown in fig. 1-5, the UHF antenna with the hybrid working mode provided by the utility model comprises an antenna housing 1, a top radiator assembly 2 and a bottom radiator assembly 5 are arranged in the antenna housing 1, a tuning circuit 3 is arranged in the antenna housing 1 and between the top radiator assembly 2 and the bottom radiator assembly 5, the tuning circuit 3 is provided with a resistor, a capacitor, a plurality of inductance components and a plurality of electronic switches, different inductance components are loaded through different electronic switch control circuits to achieve the purpose of tuning, the inductance components in the tuning circuit 3 comprise a first capacitor 3-1, a second capacitor 3-2, a third capacitor 3-3, a fourth capacitor 3-4, a fifth capacitor 3-5 and a sixth capacitor 3-6, and the electronic switches in the tuning circuit 3 comprise a first switch 6-1, a second switch 6-2, a third switch 6-3, a fourth switch 6-4, a fifth switch 6-5 and a sixth switch 6-6, and the first capacitor 3-1, the second switch 3-2, the fourth switch 3-5 and the fourth switch 6-6 are electrically connected with the fourth switch 3-1, the fourth switch 3-3 and the fourth switch 3-6. The tuning circuit 3 is electrically connected with the top radiator assembly 2 and the bottom radiator assembly 5 through the radio frequency cable assembly 4, the bottom end fixedly connected with bottom plate 7 of the radome 1, the bottom end of the radome 1 and the bottom plate 7 are provided with mounting holes 8, and the bottom plate 7 passes through the mounting holes 8 through connecting bolts 10 and is fixedly connected with the bottom end of the radome 1. The bottom of the bottom plate 7 is fixedly connected with a control circuit 6, and the control circuit 6 is electrically connected with the tuning circuit 3 through a radio frequency cable assembly 4.

The bottom plate 7 is connected with a bottom adjusting circuit 9, and the bottom adjusting circuit 9 is electrically connected with the control circuit 6. The bottom blending circuit 9 includes a capacitor 9-2, a resistor 9-3, a seventh inductance element 9-1, and a seventh switch 6-7 electrically connected. The bottom blending circuit 9 is provided with a radio frequency connector pin 11 which can be electrically connected with the seventh switch 6-7, and the outside of the bottom plate 7 is connected with a radio frequency connector 12 corresponding to the radio frequency connector pin 11.

The working principle of the embodiment is as follows: the gain of the transmitting part or the receiving part of the communication system can be increased, so that the system working distance can be increased. The antenna operates in a hybrid mode of a receive broadband matching mode and a transmit tuning mode.

The scheme of the tuning mode is that a control circuit 6 is used for controlling a tuning circuit 3 at the middle and upper parts of the antenna, the control circuit 6 adopts resistance, capacitance and inductance components for tuning, and different inductance components are loaded through an electronic switch control circuit to achieve the purpose of tuning; the receiving broadband matching mode is to control a bottom allocation circuit 9 at the bottom of the antenna by a control circuit 6 so as to lead the antenna to reach a full-band matching state.

Specifically, the working principle of the mixed mode antenna is as follows:

(1) the tuning circuit 3 must be in the middle-upper part of the antenna to achieve maximum improvement of the gain of the transmitting frequency point;

(2) the tuning circuit 3 must be designed with a low-loss high-Q circuit;

(3) the tuning circuit 3 adopts a multi-inductance hierarchical series design; tuning different resonant frequencies using different inductance values; wherein the tuned inductance can also be replaced by a capacitor designed on a similar principle;

(4) the control circuit of the control circuit 6 reasonably utilizes the lightning protection circuit of the antenna to the ground so as not to influence the work of the antenna; namely, the control circuit has the lightning stroke preventing capability;

(5) the control part of the antenna can realize tuning of the transmitting and receiving states under the condition of the storage unit, and the improvement of the antenna gain is realized to a greater extent.

Example two

This example shows the experimental benefit of the utility model obtained based on example one.

Project	Long (mm)	Wide (mm)	High (mm)	Weight of (E)	Remarks
						Comparative model 1	398	158	200	≤1.8kg	Good performance
Comparative model 2	230	83	420	≤1.8kg	Good performance
						Comparative model 3	156	86	300	≤1.8kg	Poor performance (low demand)
The proposal is that	222	80	345	≤1.8kg	Good performance

Table 1: physical performance data of several antennas of the same type

Table 2: gains of conventional antennas under different floors

Table 3: gain of the antenna of the utility model under different floors

Table 4: gain contrast of conventional antenna and tuned antenna

In table 3, "wide" means a wideband antenna, and "tone" means a tuned antenna; the lateral direction and the course direction represent the lateral direction and the course direction gain of the antenna and indirectly reflect the out-of-roundness; maximum and minimum represent the maximum and minimum values of gain in the case of different floors, respectively. As can be seen from tables 1-4, the simulation results of this scheme are significantly improved over the other schemes.

Wherein the improvement in low frequency band is significantly more, the percentage of points above 3dB = (37+39)/140 = 54.28%, the percentage of points above 6dB = 39/140 = 27.85%; the gain probability of the tuning antenna is higher than that of the broadband antenna under the condition of various installation floors of medium frequency and high frequency, see table 3; the tuning antenna (the scheme) has the advantages that the weight is increased compared with other schemes because of the addition of the tuning circuit, but the tuning antenna can provide stealth benefits for the weight reduction of the whole machine.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims (7)

1. UHF antenna of mixed mode of operation, including radome (1), its characterized in that: the antenna housing comprises an antenna housing body (1), wherein a top radiator assembly (2) and a bottom radiator assembly (5) are arranged in the antenna housing body (1), a tuning circuit (3) is arranged between the antenna housing body (1) and the top radiator assembly (2) and the bottom radiator assembly (5), the tuning circuit (3) is provided with a resistor, a capacitor, a plurality of inductance components and a plurality of electronic switches, different inductance components are loaded through different electronic switch control circuits to achieve the purpose of tuning, the tuning circuit (3) is electrically connected with the top radiator assembly (2) and the bottom radiator assembly (5) through a radio frequency cable assembly (4), a bottom plate (7) is fixedly connected to the bottom end of the antenna housing body (1), a control circuit (6) is fixedly connected to the bottom of the bottom plate (7), and the control circuit (6) is electrically connected with the tuning circuit (3) through the radio frequency cable assembly (4).

2. The UHF antenna of the hybrid operating mode according to claim 1, characterized in that the bottom plate (7) is connected with a bottom trimming circuit (9), the bottom trimming circuit (9) being electrically connected with the control circuit (6).

3. The UHF antenna of the hybrid operating mode according to claim 2, characterized in that the bottom trimming circuit (9) comprises an electrically connected capacitor (9-2), a resistor (9-3), a seventh inductive component (9-1), a seventh switch (6-7).

4. A UHF antenna according to claim 3, characterized in that the bottom trimming circuit (9) is provided with a radio frequency connector pin (11) electrically connectable to the seventh switch (6-7), and that the bottom plate (7) is externally connected with a radio frequency connector (12) corresponding to the radio frequency connector pin (11).

5. The UHF antenna of the hybrid working mode according to claim 1, wherein the bottom end of the radome (1) and the bottom plate (7) are provided with mounting holes (8), and the bottom plate (7) is fixedly connected to the bottom end of the radome (1) through the mounting holes (8) by connecting bolts (10).

6. The UHF antenna of the hybrid operating mode of claim 1, wherein the inductive components located within the tuning circuit (3) comprise a first capacitor (3-1), a second capacitor (3-2), a third capacitor (3-3), a fourth capacitor (3-4), a fifth capacitor (3-5) and a sixth capacitor (3-6), and the electronic switches located within the tuning circuit (3) comprise a first switch (6-1), a second switch (6-2), a third switch (6-3), a fourth switch (6-4), a fifth switch (6-5) and a sixth switch (6-6).

7. The UHF antenna of claim 6, wherein the first capacitor (3-1) is electrically connected to the first switch (6-1), the second capacitor (3-2) is electrically connected to the second switch (6-2), the third capacitor (3-3) is electrically connected to the third switch (6-3), the fourth capacitor (3-4) is electrically connected to the fourth switch (6-4), the fifth capacitor (3-5) is electrically connected to the fifth switch (6-5), and the sixth capacitor (3-6) is electrically connected to the sixth switch (6-6).

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