KR102222806B1 - Apparatus for receiving broadband frequency and method for controlling broadband frequency - Google Patents

Abstract

The present invention provides a broadband frequency receiving device capable of increasing the sensing bandwidth and a broadband frequency controlling method. The broadband frequency receiving device comprises: a first feeding unit capable of receiving a first signal having a first bandwidth, wherein at least a portion thereof extends in the vertical direction; a second feeding unit generating electromagnetic coupling with the first feeding unit, wherein at least a portion thereof is disposed to wrap around the first feeding unit, so as to receive a second signal having a second bandwidth higher than the first bandwidth to widen the sensing bandwidth; and a support unit supporting the first feeding unit and the second feeding unit.

Description

Apparatus for receiving broadband frequency and method for controlling broadband frequency}

The present invention relates to a wideband frequency reception apparatus and a frequency adjustment method, and more particularly, to a wideband frequency reception apparatus and a wideband frequency adjustment method capable of increasing a detection bandwidth.

In general, radars include active and passive radars. Active radar transmits and receives radio waves on its own and uses a high frequency band in GHz to avoid crosstalk with commercial frequencies, so it cannot detect radio wave scattering paints and structures, stealth aircraft with absorbers, etc., and requires high radio wave transmission power. Consumes power.

On the other hand, the passive radar uses a commercial frequency band in the MHz unit, so it can effectively detect a stealth vehicle, and since it does not transmit radio waves, it consumes only a small amount of power necessary for operation of the receiver, thereby reducing the operating cost of the system. In addition, the passive radar has the advantage of being able to conceal the observation position. Accordingly, there is an increasing need for a passive radar than an active radar.

Conventionally, in using a passive radar, a patch antenna was used to receive a frequency. However, the patch antenna has a problem in that the beam pattern, that is, the direction of the frequency signal, is poor. Accordingly, it was possible to improve the beam pattern by applying a dipole antenna to the passive radar.

However, in applying the dipole antenna, there is a problem that the reception frequency of the passive radar does not have a broadband characteristic. In other words, there was a problem that only a part of the bandwidth was detected based on a reflection coefficient of -10db or less that the passive radar can completely detect the frequency. Accordingly, since the passive radar detects a relatively narrow bandwidth with a reflection coefficient of -10db or less, a dipole antenna structure capable of detecting a broadband range, which is a relatively wide band, is required.

KR 10-0695330 B1

The present invention provides a wideband frequency receiving apparatus and a wideband frequency adjusting method capable of widening a detectable bandwidth.

The present invention provides a broadband frequency reception apparatus capable of detecting a wide frequency band and a method of adjusting a wideband frequency.

The present invention is capable of receiving a first signal having a first bandwidth, at least a portion of the first feeding unit extending in the vertical direction; At least a portion is wrapped around the first feeder so as to generate electromagnetic coupling with the first feeder and to increase the detection bandwidth by receiving a second signal having a second bandwidth higher than the first bandwidth. A second feeding part arranged so as to be so arranged; And a support part supporting the first power supply part and the second power supply part.

The present invention is capable of receiving a first signal having a first bandwidth, at least a portion of the first feeding unit extending in the vertical direction; In order to generate electromagnetic coupling with the first feed unit and to receive a second signal having a second bandwidth higher than the first bandwidth to increase the sensing bandwidth, the length is longer in the vertical direction than the first feed unit. A second power feeding unit; And a support part supporting the first power supply part and the second power supply part.

The present invention is capable of receiving a first signal having a first bandwidth, at least a portion of the first feeding unit extending in the vertical direction; The inner circumferential surface is the same distance as the outer circumferential surface of the first feeding unit so as to generate electromagnetic coupling with the first feeding unit and to increase the detection bandwidth by receiving a second signal having a second bandwidth higher than the first bandwidth. A second feeding unit spaced apart from each other; And a support part supporting the first power supply part and the second power supply part.

The present invention is capable of receiving a first signal having a first bandwidth, at least a portion of the first feeding unit extending in the vertical direction; The inner circumferential surface is the same distance as the outer circumferential surface of the first feeding unit so as to generate electromagnetic coupling with the first feeding unit and to increase the detection bandwidth by receiving a second signal having a second bandwidth higher than the first bandwidth. A second feeding portion spaced apart from each other and having a length longer in the vertical direction than the first feeding portion; And a support part supporting the first power supply part and the second power supply part.

The first feeding part includes a pair of first feeding members spaced apart from each other and arranged in parallel in an up-down direction, and a balun member respectively coupled to the pair of first feeding members, and the second feeding part has an inner circumferential surface of the They are spaced at equal intervals with the outer peripheral surfaces of the pair of first power feeding members.,

The second feeding part may include a hollow second feeding member coupled to the support and extending in a vertical direction; And an auxiliary power feeding member fastened to the balun member and installed at the center of the second power feeding member based on the vertical direction.

The vertical length of the second power feeding member is longer than the vertical length of the pair of first power feeding members.

The auxiliary power feeding member has an outer diameter equal to the inner diameter of the second power feeding member and extends in a vertical direction.

The length from the auxiliary feeding member to the end of the second feeding member is 600mm or more and 900mm or less, and the length from the balun member to the end of the first feeding member is 536mm or more and 804mm or less.

The distance between the outer circumferential surface of the first power feeding member and the inner circumferential surface of the second power feeding member is 50mm or more and 75mm or less.

The length of the auxiliary power feeding member in the vertical direction is 1.28mm or more and 1.92mm or less.

The support unit may include a support body extending in a crossing direction crossing the vertical direction, passing through the second feed unit, and coupled to the first feed unit; And a power supply member installed inside the support body so as to supply power to the first power supply unit.

The first power supply unit and the second power supply unit include a dipole antenna.

The present invention includes the process of receiving a first signal having a first bandwidth by supplying a current to a first power supply unit; Receiving a second signal having a second bandwidth higher than the first bandwidth by using a second power supply unit disposed to surround the first power supply unit; And increasing the sensing bandwidth by adding the first bandwidth and the second bandwidth.

The process of receiving the second signal having the second bandwidth includes a process of indirectly feeding the second feeder by generating an electromagnetic coupling between the first feeder and the second feeder.

The first bandwidth may be a frequency of 87 MHz or more and 117 MHz or less, and the second bandwidth is a frequency of 117 MHz or more and 147 MHz or less.

According to an embodiment of the present invention, by receiving a second signal having a second bandwidth and adding the second bandwidth to the existing first bandwidth, the total detection bandwidth may be widened. Accordingly, since the frequency band detectable by the broadband frequency receiver is relatively wide, signals having frequencies in a relatively wide range can be detected.

In addition, since the second bandwidth is generated by an electromagnetic coupling method, that is, an indirect power supply method, a separate power supply system for generating the second frequency may not be provided. Accordingly, it is possible to simplify the overall system configuration for generating the frequency band.

1 is a perspective view of a broadband frequency receiving apparatus according to an embodiment of the present invention.
2 is an exploded perspective view of a broadband frequency receiving apparatus according to an embodiment of the present invention.
3 is a view showing the heights of the first power supply member and the second power supply member according to an embodiment of the present invention.
4 is a view showing a radius of a first power supply member and a second power supply member according to an embodiment of the present invention.
5 is a view showing the structure of an auxiliary power feeding member according to an embodiment of the present invention.
6 is a graph showing a frequency-reflection coefficient of a broadband frequency receiving apparatus according to an embodiment of the present invention.
7 is a flowchart illustrating a method of adjusting a wideband frequency according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments make the disclosure of the present invention complete, and the scope of the invention to those of ordinary skill in the art It is provided to inform you. In order to describe the invention in detail, the drawings may be exaggerated, and the same reference numerals refer to the same elements in the drawings.

1 is a perspective view of a broadband frequency reception apparatus according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a wideband frequency reception apparatus according to an embodiment of the present invention. Hereinafter, a broadband frequency reception apparatus according to an embodiment of the present invention will be described.

Meanwhile, the broadband frequency reception apparatus 100 according to an embodiment of the present invention may be a device applied to a passive radar. That is, it may be a device applied to a radar that finds position information on a target by receiving an electromagnetic wave signal reflected by a target or an electromagnetic wave signal reflected by a third radio source.

Referring to FIG. 1, the broadband frequency receiving apparatus 100 may receive a first signal having a first bandwidth, and at least a part thereof is a first feeding unit 110 and a first feeding unit 110 extending in the vertical direction. And a second signal that generates electromagnetic coupling and receives a second signal having a second bandwidth higher than the first bandwidth, so that at least a portion of the second signal is disposed to surround the circumference of the first power feeding unit 110. It may include a feeding part 120, a first feeding part 110, and a support part 130 supporting the second feeding part. Here, the detection bandwidth may be a frequency domain detected by the broadband frequency reception apparatus 100. In addition, the vertical direction may be a direction in which the broadband frequency receiving apparatus 100 extends long.

The first power feeding unit 110 may have a first bandwidth. The first feeding unit 110 may include a pair of first feeding members 111 and a balun member 112 connecting the pair of first feeding members 111.

FIG. 3 is a view showing the heights of a first power feeding member and a second power feeding member according to an embodiment of the present invention, and FIG. 4 is a view showing a radius of a first power feeding member and a second power feeding member according to an embodiment of the present invention. 5 is a view showing the structure of the auxiliary power feeding member according to an embodiment of the present invention.

Referring to FIGS. 3 to 5, a pair of first power feeding members 111 may each extend in a vertical direction, are spaced apart from each other, and may be disposed side by side in the vertical direction. That is, the pair of first power feeding members 111 may be fixed to the balun members 112 in a state spaced apart at predetermined intervals based on the vertical direction. For example, the pair of first power feeding members 111 may be formed in a cylindrical shape. Here, the radius of the first power feeding member 111 is referred to _{as R 1.} Hereinafter, a case in which the first power supply unit 110 is provided as a dipole antenna will be described as an example.

In addition, the first power feeding member 111 may receive a first signal having a first bandwidth. That is, the first power supply member 111 may form an electric field by receiving current through a power supply member (not shown) of the support unit 130 to be described later, and receive a signal through the formed electric field. In this case, a signal received by the first power feeding member 111 may be a first signal, and a frequency range of the first signal may be a first bandwidth.

Meanwhile, the first bandwidth may be changed according to the vertical length of the first feeding member 111, that is, the shortest length H _{1 from the end of the first feeding member 111 to the balun member 112.} More specifically, the frequency may be determined by Equation 1.

[Equation 1]

(Here, f is the frequency, L is the impedance, and C is the capacitance.)

In Equation 1, the values of L and C, which are variable values, may vary depending on the length of the object in which the current flows in the extension direction. That is, the size of the L value and the C value may vary according to the vertical length of the first power supply member 111, that is, the shortest length H _{1 from the end of the first power supply member 111 to the balun member 112.} Hereinafter, a case in which the first bandwidth is greater than or equal to 87MHz and less than or equal to 117MHz under the condition of a reflection coefficient of -10db will be described. A method of setting the bandwidth according _{to the shortest length H 1} from the end of the first power feeding member 111 to the balun member 112 will be described again below.

The balloon member 112 is connected to the support unit 130 and may receive current from the power supply member. Accordingly, the balun member 112 may apply current to the pair of first power feeding members 111. For example, the balun member 112 may be provided in a rectangular parallelepiped shape. That is, the first power feeding member 111 may be fixed to the upper and lower surfaces of the balun member 112, respectively. In addition, a groove 112a recessed inward may be provided on the side of the balloon member 112, and the support 130 may be inserted into the groove 112a. Accordingly, the balun member 112 and a pair of first power feeding members 111 may be supported through the support part 130.

On the other hand, the length of the upper surface of the balun member 112 and the end of the first feeding member 111 fixed to the upper surface of the balun member 112 is installed on the lower surface of the balun member 112 and the lower surface of the balun member 112 It may be the same as the length to the end of the first power feeding member 111. Here, the balun member 112 may be provided as a balance-unbalance converter. However, the structure and shape of the balloon member 112 is not limited thereto and may be various.

The second power supply unit 120 may generate electromagnetic coupling with the first power supply unit 110. The second power supply unit 120 may indirectly supply power with the first power supply unit 110 to form an electric field and receive a second signal having a second bandwidth. That is, the second bandwidth may be sensed by receiving the second signal.

To this end, the second power supply unit 120 may be disposed to surround the first power supply unit 110. For example, the second power supply unit 120 may be disposed to surround the entire first power supply unit 110 or a part of the entire first power supply unit 120.

In general, when a second conductor is disposed in a state that is spaced apart by a predetermined distance from a first conductor in which an electric field is formed through current flow, an electromagnetic coupling phenomenon may occur between the first conductor and the second conductor. That is, a current flows through the second conductor and an electric field may be formed. A method of transmitting current to the second conductor in this way is called an indirect power supply method.

When the second power supply unit 120 is disposed to surround the first power supply unit 111 around the first power supply unit 110 in which the electric field is formed, the second power supply unit 120 may also be Current flows through and an electric field can be formed. Accordingly, the second power feeding unit 120 may receive a signal. In this case, a signal received by the second power feeding unit 120 may be a second signal, and a frequency band of the second signal may be a second bandwidth. Here, the second bandwidth may be a higher frequency band than the first bandwidth. For example, a case where the second bandwidth is 117 MHz or more and 147 MHz or less under the condition of a reflection coefficient of -10db will be described as an example.

Meanwhile, as described above, the bandwidth is based on the length of the second power feeding unit 120 through which current flows, and more specifically, the shortest length H ₂ from the end of the second power feeding member 121 to the auxiliary power feeding member 122 to be described later. It can be different. A method of setting the bandwidth according _{to the shortest length H 2} from the end of the second power feeding member 121 to the auxiliary power feeding member 122 will be described again below.

The second power supply unit 120 may include a second power supply member 121 and an auxiliary power supply member 122. The second power feeding member 121 extends in the vertical direction and may be formed in a hollow shape. For example, the second power feeding member 121 may be formed in a hollow cylindrical shape. The radius of the hollow portion of the second power feeding member 121 may be _{R 2.} The radius R ₂ of the hollow portion may be longer than _{the radius R 1} of the first power feeding member 111. Thus, the inner circumferential surface of the second power feeding member 121 and the outer circumferential surface of the first power feeding member have a radius R ₂ and a radius It can be separated _{by D 1, which} is the difference between R _1.

On the other hand, according to the length of _{the separation distance D 1} between the inner circumferential surface of the second feeding member 121 and the outer circumferential surface of the first feeding member 111, the second It can affect the bandwidth. That is, the L value and the C value may vary according to the _{separation distance D 1, and the second bandwidth may be changed.} A method of setting the bandwidth according to the length of _{the separation distance D 1} between the inner circumferential surface of the second power feeding member 121 and the outer circumferential surface of the first feeding member will be described again below.

In addition, the second power supply member 121 may be disposed concentrically with the first power supply member 111. That is, the outer circumferential surface of the first feeding member 111 and the inner circumferential surface of the second feeding member 121 may be spaced apart at the same interval with respect to the crossing direction (hereinafter referred to as crossing direction) crossing the vertical direction. Here, the crossing direction may be directions perpendicular to the vertical direction. Accordingly, current can be uniformly transmitted from the first power supply member 111 to the second power supply member 121.

In addition, the second power feeding member 121 may be formed to be longer than the vertical length of the pair of first power feeding members 111. As described above, the frequency band of the second power supply unit 120 is the vertical length of the second power supply member 121, that is, the shortest distance from the end of the second power supply member 121 to the auxiliary power supply member 122 May vary depending on _{H 2.} Thus, the second feeding member so that the second bandwidth of the second signal received by the second feeding member 121 has a higher frequency band than the first bandwidth of the first signal received by the first feeding member 111. The vertical length of 121 may be formed longer than the vertical length of the pair of first power feeding members 111.

In addition, the second power feeding member 121 may be formed with a through hole (121a) penetrating along the crossing direction. The support part 130 may be inserted into the through hole 121a. That is, the support part 130 is fastened to the through hole 121a and may support the second power feeding member 121. The structure and shape of the second power feeding member 121 and the through hole 121a are not limited thereto and may be various.

The auxiliary power supply member 122 may be installed at the center of the second power supply member 121 based on the vertical direction. The auxiliary power feeding member 122 may have a shape of a circular plate having a thickness in the vertical direction. That is, the auxiliary power feeding member 122 has an outer diameter equal to the inner diameter of the second power feeding member 121 and may have a thickness in the vertical direction. Here, the thickness of the auxiliary power feeding member 122 may be _{L 1.}

On the other hand, _{depending on the thickness L 1} of the auxiliary power feeding member 122, a slight change may be made to the second bandwidth of the second signal that the second power feeding member 121 can receive. _{That is, depending on the thickness L 1} of the auxiliary power supply member 122, the L value and the C value may change slightly, and may slightly affect the bandwidth. A method of setting the bandwidth according to _{the thickness L 1} of the auxiliary power feeding member 122 will be described again below.

In addition, the auxiliary power feeding member 122 may have the central portion penetrated in the vertical direction so that the balun member 112 may be inserted in the central portion. That is, the auxiliary power feeding member 122 may have a central portion penetrated in the vertical direction, and the penetrating inner circumferential surface may be formed in the same shape as the outer circumferential surface of the balun member 112. Accordingly, the balun member 112 and the pair of first power supply members 111 can be maintained in a fixed state to the second power supply member 121 through the auxiliary power supply member 122. In addition, a recessed groove may be formed on the side of the auxiliary power supply member 122 so as to communicate with the central portion of the auxiliary power supply member 122. The support 130 may be inserted into the balun member 112 through the groove.

Meanwhile, the auxiliary power feeding member 122 may serve to divide an upper portion and a lower portion of the second power feeding member 121 based on the vertical direction. As described above, the first power feeding members 111 may be provided in a pair and disposed side by side along the vertical direction while being spaced apart from each other. Here, the pair of first power feeding members 111 may each receive a first signal. That is, the same first signal having the first bandwidth may be received by the pair of first power feeding members 111, respectively.

In order to generate an electromagnetic coupling phenomenon corresponding to the pair of first power supply members 111, the second power supply member 121 needs to be divided into a pair. Accordingly, the auxiliary power supply member 122 serves as an insulator of the capacitor, and the second power supply member 121 can be divided into an upper portion and a lower portion. Accordingly, an electromagnetic coupling phenomenon may occur with the first power feeding member 111 disposed in a direction in which the upper portion of the second power feeding member 121 faces upward, and the lower portion of the second power feeding member 121 An electromagnetic coupling phenomenon may occur with the first power feeding member 111 disposed in a downward direction. The structure and shape of the auxiliary power feeding member 122 are not limited thereto and may be various.

The support part 130 may serve to support the first power supply unit 110 and the second power supply unit 120. The support 130 may include a support body 131 extending in an intersecting direction and a power supply member capable of supplying power to the first power supply 110.

The support body 131 may have a hollow cylindrical shape extending in an intersecting direction. One side of the support body 131 may be fixed to the structure in which the broadband frequency receiver 100 is installed, and the other side penetrates the second feeding member 121 and is inserted into the groove 112a of the balun member 112. I can. Here, one side may be in a direction opposite to a direction in which current moves to the first feeding member 111, and the other side may be in the same direction as a direction in which current moves to the first feeding member 111.

The power supply member is installed inside the support body 131 and may serve to supply current to the first power supply unit 110. For example, the power supply member may include a coaxial cable. Accordingly, by applying current from the power supply member to the first power supply member 111, the first power supply unit 110 may receive a first signal having a first bandwidth.

6 is a graph showing a frequency-reflection coefficient of a broadband frequency receiving apparatus according to an embodiment of the present invention.

Hereinafter, a process of setting the second bandwidth of the second signal in the second power feeding unit 120 will be described with reference to FIGS. 3 to 6. _{As described above, the second bandwidth is the shortest length H 1} from the end of the first feeding member 111 to the balun member 112, and the shortest length from the end of the second feeding member 121 to the auxiliary feeding member 122 The value may vary according to the length H _{2 , the distance D 1} between the inner circumferential surface of the second power feeding member 121 and the outer circumferential surface of the first feeding member 111, _{and the thickness L 1} of the auxiliary power feeding member 122. That is, when the values of the variables H ₁ , H ₂ , D ₁ , and L ₁ change, the L and C values may change, and the bandwidth may also change.

On the other hand, the L value and the C value do not change at the same rate as the amount of change _{in H 1} , H ₂ , D ₁ , and L _1. That is, the L and C values do not change at a constant rate according to the changes of _{H 1} , H ₂ , D ₁ , and L _1. Thus, referring to the graph shown in FIG. 6 (X-axis frequency, Y-axis reflection coefficient), _{the values of H 1} , H ₂ , D ₁ , and L ₁ are changed, and the second bandwidth under the condition of the reflection coefficient -10db or less You can find the optimization value of. That is, _{by changing the values of H 1} , H ₂ , D ₁ , and L ₁ , the coordinate changes of the lowest point of the first bandwidth (hereinafter referred to as the first pole), which is a relatively low frequency, and the lowest point of the second bandwidth, which is a relatively high frequency. By checking the coordinate change of (hereinafter referred to as the second pole), an optimization value of the second bandwidth can be found.

Coordinate changes of the first and second poles according to the change of _{the shortest length H 1} from the end of the first power supply member 111 to the balun member 112 are as follows.

If _{the length of H 1} is increased under the condition that the length of _{H 2} is constant, the coordinates of the first pole change so that the frequency decreases and the reflection coefficient decreases. The second pole changes its coordinates so that the frequency decreases and the reflection coefficient increases. On the other hand, _{when the length of H 1} is decreased, the frequency of the first pole increases and the coordinates change so that the reflection coefficient increases. The coordinates of the second pole change so that the frequency increases, and the reflection coefficient does not change.

Coordinate changes of the first and second poles according to the change in _{the shortest length H 2} from the end of the second power feeding member 121 to the auxiliary power feeding member 122 are as follows.

If _{the length of H 2} is increased under the condition that the length of _{H 1} is constant, the first pole's coordinates change so that the frequency decreases and the reflection coefficient increases. The coordinates of the second pole change so that the frequency decreases, and the reflection coefficient does not change. On the other hand, _{when the length of H 2} is decreased, the coordinates of the first pole change so that the frequency increases, and the reflection coefficient does not change. The second pole changes its coordinates so that the frequency increases and the reflection coefficient increases.

Coordinate changes of the first and second poles according to the change in _{the distance D 1} between the inner circumferential surface of the second power feeding member 121 and the outer circumferential surface of the first power feeding member 111 are as follows.

When _{the length of D 1} is increased, the first pole's coordinates change so that the frequency increases and the reflection coefficient decreases. The second pole changes its coordinates so that the frequency decreases and the reflection coefficient increases. On the other hand, _{when the length of D 1} is decreased, the frequency of the first pole decreases and the coordinates change so that the reflection coefficient increases. The second pole changes its coordinates so that the frequency increases and the reflection coefficient increases.

Changes in coordinates of the first and second poles according to the length change of _{the thickness L 1} of the auxiliary power feeding member 122 are as follows.

When _{the length of L 1} is increased, the coordinates of the first pole change so that the frequency decreases by a small amount, and the reflection coefficient does not change. The second pole changes its coordinates so that the frequency decreases by a small amount and the reflection coefficient increases by a small amount. On the other hand, _{when the length of L 1} is decreased, the coordinates of the first pole change so that the frequency increases by a small amount, and the reflection coefficient does not change. The second pole changes its coordinates so that the frequency increases by a small amount and the reflection coefficient increases by a small amount.

_{The optimization values of the variables H 1} , H ₂ , D ₁ , and L ₁ according to the change in frequency and reflection coefficient of the first and second poles are as follows. That is, the value of _{H 1 is 536 mm or more and 804 mm or less, H 2} value is 600 mm or more and 900 mm or less, D ₁ is 50 mm or more and 75 mm or less, and L ₁ is 1.28 mm or more and 1.92 mm or less. By setting the variables H ₁ , H ₂ , D ₁ , and L ₁ as above, the first bandwidth can be formed from 87 MHz to 117 MHz or less in the range of -10 dB or less, and the second bandwidth to 117 MHz or more to 147 MHz or less. Can be formed. Accordingly, the detection bandwidth of the broadband frequency receiving apparatus may be formed to be 87 MHz or more to 147 MHz or less.

As described above, since the second power supply unit is disposed around the first power supply unit so as to generate electromagnetic coupling with the first power supply unit, a second signal having a second bandwidth can be received. Accordingly, a frequency band that can be detected may be widened by adding the first bandwidth of the first feeding unit to the second bandwidth of the second feeding unit. Accordingly, the wideband frequency receiving apparatus can detect wideband frequency signals.

7 is a flowchart illustrating a method of adjusting a wideband frequency according to an embodiment of the present invention.

Hereinafter, a method of adjusting a broadband frequency according to an embodiment of the present invention will be described with reference to FIG. 7. In the method for adjusting a wideband frequency according to an embodiment of the present invention, the process of receiving a first signal having a first bandwidth by supplying current to the first feeding unit (S110), 2 A process of receiving a second signal having a second bandwidth higher than the first bandwidth by using the power supply unit (S120), and a process of increasing the detection bandwidth by summing the first bandwidth and the second bandwidth (S130). have. In this case, the method of adjusting the wideband frequency may be performed by the wideband frequency receiving apparatus 100 according to the embodiment of the present invention shown in FIG. 1.

First, current may be supplied to the first power supply unit 110. That is, current may be supplied from the power supply member to the balun member 112, and the balun member 112 may apply current to the pair of first power feeding members 111. At this time, the pair of first power feeding members 111 may form an electric field. The pair of first power feeding members 111 may receive a first signal having a first bandwidth, that is, a frequency band of 87 MHz or more to 117 MHz or less through the formed electric field (S110).

Thereafter, the second power supply unit 120 may be disposed to surround the first power supply unit 110 to receive a second signal having a second bandwidth higher than the first bandwidth. More specifically, an electromagnetic coupling may be generated between the first power supply member 111 and the second power supply member 121 by disposing the second power supply member 121 around the first power supply member 111. . Accordingly, the second power supply member 121 is indirectly supplied by the first power supply member 111 and current may flow through the second power supply member 121. Accordingly, an electric field is generated in the second power feeding member 121 and a second signal having a second bandwidth, that is, a frequency band of 117 MHz or more to 147 MHz or less, may be received (S120).

Thereafter, the total detection frequency band may be increased by adding the second bandwidth to the first bandwidth (S130). Accordingly, a frequency band between the lowest value of the first bandwidth and the highest value of the second bandwidth may be received.

In this way, the entire detection frequency band may be widened by adding the first bandwidth of the first signal received by the first feeding unit to the second bandwidth of the second signal received by the second feeding unit. Accordingly, since the frequency band detectable by the wideband frequency receiving apparatus is widened, it is possible to receive wideband frequency signals.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by being limited to the described embodiments, and should be defined by the claims to be described below as well as the claims and their equivalents.

100: broadband frequency receiver 110: first feeding unit
111: first feeding member 120: second feeding portion
121: second power feeding member 130: support

Claims (16)

A first power feeding unit capable of receiving a first signal having a first bandwidth and extending at least a portion in an up-down direction;
At least a portion of the first feeder is wrapped around the first feeder so as to generate electromagnetic coupling with the first feeder to receive a second signal having a second bandwidth higher than the first bandwidth and to increase the detection bandwidth. A second feeding part arranged so as to be so arranged; And
Including; a support portion for supporting the first feeding portion and the second feeding portion,
The first feeding unit includes a pair of first feeding members spaced apart from each other and disposed in parallel along the vertical direction, and a balun member respectively coupled to the pair of first feeding members,
The second power feeding unit, the broadband frequency receiving device, the inner circumferential surface is spaced apart at the same interval as the outer circumferential surfaces of the pair of first feeding members. A first power feeding unit capable of receiving a first signal having a first bandwidth and extending at least a portion in an up-down direction;
By generating electromagnetic coupling with the first feeding unit, a second signal having a second bandwidth higher than the first bandwidth can be received and a sensing bandwidth is widened, so that the length is longer in the vertical direction than the first feeding unit. A second power feeding unit; And
Broadband frequency receiving apparatus comprising a; a support portion for supporting the first power supply and the second power supply. A first power feeding unit capable of receiving a first signal having a first bandwidth and extending at least a portion in an up-down direction;
The inner circumferential surface is the same distance as the outer circumferential surface of the first feeding unit so as to generate electromagnetic coupling with the first feeding unit to receive a second signal having a second bandwidth higher than the first bandwidth and to widen the detection bandwidth. A second feeding unit spaced apart from each other; And
Broadband frequency receiving apparatus comprising a; a support portion for supporting the first power supply and the second power supply. A first power feeding unit capable of receiving a first signal having a first bandwidth and extending at least a portion in an up-down direction;
The inner circumferential surface is the same distance as the outer circumferential surface of the first feeding unit so as to generate electromagnetic coupling with the first feeding unit to receive a second signal having a second bandwidth higher than the first bandwidth and to widen the detection bandwidth. A second feeding portion spaced apart from each other and having a length longer in the vertical direction than the first feeding portion; And
Broadband frequency receiving apparatus comprising a; a support portion for supporting the first power supply and the second power supply. delete The method according to claim 1,
The second power feeding unit,
A hollow second power feeding member coupled to the support and extending in a vertical direction; And
A broadband frequency reception device including; an auxiliary power feeding member fastened to the balun member and installed at the center of the second power feeding member with respect to the vertical direction. The method of claim 6,
The vertical length of the second feeding member is longer than the vertical length of the pair of first feeding members. The method of claim 6,
The auxiliary power feeding member, the length of the outer diameter is the same as the length of the inner diameter of the second power feeding member, a broadband frequency receiving device extending in the vertical direction. The method of claim 6,
The length from the auxiliary feeding member to the end of the second feeding member is 600mm or more and 900mm or less,
A broadband frequency receiving device having a length from the balun member to an end of the first feeding member is 536 mm or more and 804 mm or less. The method of claim 6,
A wideband frequency receiving device in which a distance between the outer circumferential surface of the first feeding member and the inner circumferential surface of the second feeding member is 50mm or more and 75mm or less. The method of claim 6,
A broadband frequency receiving apparatus having a vertical length of the auxiliary feeding member of 1.28mm or more to 1.92mm or less. The method according to claim 1,
The support part,
A support body extending in an intersecting direction crossing the vertical direction, passing through the second power supply, and coupled to the first power supply; And
Broadband frequency receiving device comprising a; a power supply member installed inside the support body so as to supply power to the first power supply. The method according to any one of claims 1 to 4 and 6 to 12,
The first power supply unit and the second power supply unit includes a dipole antenna. Receiving a first signal having a first bandwidth by supplying a current to the first feeding unit;
Receiving a second signal having a second bandwidth higher than the first bandwidth by using a second power supply unit disposed to surround the first power supply unit; And
Including; the step of increasing the detection bandwidth by summing the first bandwidth and the second bandwidth; Including,
The first bandwidth may be a frequency of 87 MHz or more to 117 MHz or less,
The second bandwidth is a broadband frequency adjustment method of a frequency of 117MHz or more to 147MHz or less. The method of claim 14,
The process of receiving the second signal having the second bandwidth,
And indirectly feeding the second feeder by generating an electromagnetic coupling between the first feeder and the second feeder. delete

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