Transmitting Device

Abstract

To provide a transmitter which increases the effect of suppressing stop of operations in an emergency by changing the combination of a transmission unit to use and an antenna to use.SOLUTION: The operation (7) of sending a signal S1 from a second antenna 22 alone and the operation (8) of sending a signal S2 from a first antenna 21 alone are desirably possible. It means that it is desirable that the combination of the transmission unit and the antennas is not limited. A coaxial switch unit 30F and a coaxial switch unit 30G are added to the first antenna 21 side and the second antenna 22 side, respectively. Also, the coaxial switch units 30F and 30G are connected together. A transmitter 1 can realize the situations (7) and (8).SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a transmitting device provided with multiple transmitters and multiple antennas to obtain redundancy. [Background technology]

[0002] In broadcast transmitting devices, redundancy is implemented to prevent broadcasting from being stopped due to a sudden event such as a device failure. For example, Patent Document 1 describes a configuration in which two transmitting units are used, one of which is a transmitting unit for normal use (active system) and the other is a transmitting unit for backup use in case the active system fails (standby system), and a coaxial switch is used to switch between the output of the active system transmitting unit and the output of the standby system transmitting unit depending on the situation and output from an antenna.

[0003] Also, similar to the case of switching the transmitter, it is possible to switch between antennas depending on the situation. Such a configuration is described, for example, in Patent Document 2. Furthermore, when multiple antennas are used, a single signal from the active or standby system can be split into two systems by a power splitter, and each signal can be input to a different antenna, thereby achieving a high gain.

[0004] In addition, to prevent the output from being temporarily stopped when switching between the active and standby systems, the two transmitters operate constantly and both constantly emit the two signals mentioned above. For this reason, the signal that is not input to the antenna (not used) is input to a pseudo-antenna separate from the actual antenna, so that it is emitted as heat rather than electromagnetic waves.

[0005] To achieve such signal switching, a plurality of four-terminal coaxial switchers are used, as described in Patent Documents 1 and 2, which switch the connection between two input terminals and two output terminals between two different ways. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-129333 [Patent Document 2] Japanese Patent Application Laid-Open No. 2000-324408 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0007] In the conventional technology, as described above, it was possible to switch between transmitters and antennas to be used, but the combinations of transmitters and antennas to be used were limited. For example, if one of the two antennas was unavailable and one of the two transmitters broke down, output was sometimes not possible.

[0008] For this reason, there has been a demand for a transmitting device that can be more effectively prevented from stopping operation in an emergency by changing the combination of the transmitting unit and antenna used.

[0009] The present invention has been made in view of the above circumstances, and has as its object to solve the above problems. [Means for solving the problem]

[0010] The present invention provides a transmitting device in which a first signal emitted from a first transmitting unit and a second signal emitted from a second transmitting unit are switched and emitted from an antenna, the transmitting device having a first antenna and a second antenna as the antennas, a power divider that distributes a selected one of the first signal and the second signal into two systems and outputs the power divider, and a plurality of coaxial switchers in each of which a combination of connections between two input terminals and two output terminals is switched in two ways, and a first antenna-side coaxial switcher and a second antenna-side coaxial switcher, both of which are one of the coaxial switchers, are connected to the first antenna and the second antenna, respectively, and the first antenna-side coaxial switcher and the second antenna-side coaxial switcher are connected to the first antenna and the second antenna, respectively. The coaxial switchers on the first antenna side, the coaxial switcher on the second antenna side, and the other coaxial switchers are also connected to each other, and depending on the settings of the first antenna side coaxial switcher, the second antenna side coaxial switcher, and the other coaxial switchers, the following operations are switched: one in which either the first signal or the second signal is selected and output from the first antenna and the second antenna; one in which only the first signal is output from the first antenna and no signal is output from the second antenna; one in which only the second signal is output from the second antenna and no signal is output from the first antenna; one in which only the first signal is output from the second antenna and no signal is output from the first antenna; and one in which only the second signal is output from the first antenna and no signal is output from the second antenna. At this time, the first antenna side coaxial switch is switched between a first state in which the first signal divided by the power divider or the second signal divided by the power divider is input to the first antenna, or the first signal not passing through the power divider is input to the first antenna, and a second state in which the second signal output from the second antenna side coaxial switch is input to the first antenna, or the first signal is input to the second antenna side coaxial switch without inputting either the first signal or the second signal to the first antenna, The second antenna side coaxial switch may be configured to be switchable between a third state in which the first signal divided by the power divider or the second signal divided by the power divider is connected to the second antenna, or the second signal not passing through the power divider is connected to the second antenna, and a fourth state in which the first signal output from the first antenna side coaxial switch is connected to the second antenna, or the second signal is connected to the first antenna side coaxial switch without inputting either the first signal or the second signal to the second antenna. The power distributor may also be provided with a non-stop switch that switches the input signal to the power distributor, and when the non-stop switch fails, one of the following operations may be selected: only the first signal is output from the first antenna and no signal is output from the second antenna; only the second signal is output from the second antenna and no signal is output from the first antenna; only the first signal is output from the second antenna and no signal is output from the first antenna; and only the second signal is output from the first antenna and no signal is output from the second antenna. [Effects of the Invention]

[0011] According to the present invention, by changing the combination of the transmitter and the antenna to be used, it is possible to obtain a transmitter that is more effective in preventing operation from stopping in an emergency. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram illustrating a configuration of a transmitting device serving as a reference example. [Figure 2] 1A and 1B are diagrams illustrating the configuration and operation of a coaxial switcher; [Figure 3] FIG. 10 is a diagram illustrating an operation (part 1) of a transmitting device serving as a reference example. [Figure 4] FIG. 10 is a diagram illustrating the operation (part 2) of a transmitting device serving as a reference example. [Figure 5] FIG. 10 is a diagram illustrating the operation (part 3) of the transmitting device serving as a reference example. [Figure 6] 1 is a diagram illustrating a configuration of a transmitting device according to an embodiment of the present invention. [Figure 7] FIG. 4 is a diagram illustrating an operation (part 1) of a transmitting device according to an embodiment of the present invention. [Figure 8] FIG. 10 is a diagram illustrating an operation (part 2) of the transmitting device according to the embodiment of the present invention. [Figure 9] FIG. 10 is a diagram illustrating an operation (part 3) of the transmitting device according to the embodiment of the present invention. [Figure 10] FIG. 10 is a diagram illustrating an operation (part 4) of the transmitting device according to the embodiment of the present invention. [Figure 11] 1 is a diagram illustrating a combination of a transmitter and an antenna realized in a transmitter device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] Next, an embodiment of the present invention will be described in detail with reference to the drawings. First, as a reference example, the configuration and operation of a transmitting device using two transmitting units and two antennas will be described. FIG. 1 is a diagram showing the configuration of this transmitting device 9. Here, a first transmitting unit (active system) 11 that emits a signal (first signal) S1 and a second transmitting unit 12 (standby system) that emits a signal (second signal) S2 are used. In this transmitting device 9, either the signal S1 or S2 is switched and emitted from the antenna.

[0014] Further, a first antenna 21 and a second antenna 22 are provided as antennas. In this transmitting device 9, an operation is performed in which a common signal (either signal S1 or S2) is transmitted from the first antenna 21 and the second antenna 22, and an operation is performed in which either signal S1 or S2 is transmitted from only either the first antenna 21 or the second antenna 22. In addition, a spare antenna 23 is provided as an emergency antenna, and an operation is also performed in which either signal S1 or S2 is transmitted from only the spare antenna 23. However, because the characteristics of the spare antenna 23 are inferior to those of the first antenna 21 and the second antenna 22, when a single antenna is used, it is preferable to use either the first antenna 21 or the second antenna 22, and it is preferable to use the spare antenna 23 only when there is an abnormality in the first antenna 21 or the second antenna 22.

[0015] As described above, since the first transmitter 11 constantly emits a signal (first signal) S1, and the second transmitter 12 constantly emits a signal (second signal) S2, the signal S1 or S2 that is not emitted from the antenna must be thermalized and terminated rather than emitted as an electromagnetic wave. For this purpose, a dummy antenna 24 is provided. A maintenance dummy antenna 25 is also provided, which has the same function as the dummy antenna 24 but is used to terminate signals so that the first transmitter 11 and the second transmitter 12 can operate without emitting any signals from the antenna, particularly during maintenance of the transmitter 9.

[0016] As described above, a power divider 13 is provided to divide the selected signal into two systems in order to output a common signal (either signal S1 or S2) from the first antenna 21 and the second antenna 22. The input of the power divider 13 is set to a state in which either signal S1 or S2 or no signal is input.

[0017] In this transmitting device 9, the above components are combined with a plurality of coaxial switchers that only perform the operation of switching signals. The coaxial switcher used is one with two input terminals and two output terminals, similar to those described in Patent Documents 1 and 2. Fig. 2 is a diagram showing a schematic diagram of the configuration and operation of this coaxial switcher 30. In Fig. 2(a), the four terminals of this coaxial switcher 30 are A to D shown in the figure.

[0018] This coaxial switch 30 can be in two states: the state shown in Figure 2(b) and the state shown in Figure 2(c). Figure 2(b) shows the state in which terminals A and B are connected and terminals C and C are connected, while Figure 2(c) shows the state in which terminals A and D are connected and terminals B and C are connected. For this reason, if one of the pair of terminals A and C and the pair of terminals B and D is set as the input side and the other as the output side, it is possible to select one of two combinations of terminals on the input side and output side.

[0019] 1, coaxial switchers 30A to 30E are provided, which are the coaxial switcher 30 described above. As described above, there are three inputs to the power divider 13: either the signal S1 or S2, or no input. Of these, since it is required that no interruption occurs when switching between the signals S1 and S2, a non-interruption switcher 31 is provided on the input side of the power divider 13, which performs the same operation as the coaxial switcher 30 in FIGS. 2(b) and 2(c), but which does not cause an interruption when switching.

[0020] In FIG. 1, the control unit 41 can recognize the states of the first transmitting unit 11, the second transmitting unit 12, the first antenna 21, and the second antenna 22. In response to this, or through an administrator's operation of the operation unit 42 (keyboard, touch panel, etc.), the control unit 41 controls the connections of the coaxial switches 30A-30E and the uninterruptible wave switch 31 to either of FIG. 2(b) or (c), thereby realizing the operation described below. In addition to this control, the coaxial switches 30A-30E and the uninterruptible wave switch 31 output signals indicating their current state, either FIG. 2(b) or (c), allowing the control unit 41 to recognize the state. The state of each switch is displayed on the display unit 43. The display unit 43 also displays other information related to the control of the transmitting device 9.

[0021] In the configuration of Fig. 1, depending on the settings of each coaxial switch and non-stop transmission switch 31, the following operations are performed: (1) dividing signal S1 and transmitting it from the first antenna 21 and the second antenna 22, (2) dividing signal S2 and transmitting it from the first antenna 21 and the second antenna 22, (3) transmitting signal S1 only from the auxiliary antenna 23, (4) transmitting signal S2 only from the auxiliary antenna 23, (5) transmitting signal S1 only from the first antenna 21 and not from the second antenna 22, and (6) transmitting signal S2 only from the second antenna 22 and not from the first antenna 21. Figs. 3(a) and (b) show the connection states of each coaxial switch and non-stop transmission switch 31 in the configuration of Fig. 1 in the above operations (1) and (2), Figs. 4(c) and (d) show the above operations (3) and (4), and Figs. 5(e) and (f) show the above operations (5) and (6). Here, in each coaxial switch, the connections are depicted by arc lines as shown in Figures 2(b) and 2(c), and in the continuous wave switch 31, the connections are depicted by straight lines instead of arc lines. Also, in Figures 3 to 5, the control unit 41, operation unit 42, and display unit 43 are omitted.

[0022] In Fig. 3(a), the signal S1 output from the non-stop transmission switch 31 is input to the power splitter 13, which is then distributed and input to the first antenna 21 and the second antenna 22. On the other hand, the unused signal S2 is terminated at the dummy antenna 24. Conversely, in Fig. 3(b), the signal S2 output from the non-stop transmission switch 31 is input to the power splitter 13, which is then distributed and input to the first antenna 21 and the second antenna 22. On the other hand, the unused signal S1 is terminated at the dummy antenna 24.

[0023] In Figure 4(c), signal S1 is input directly to spare antenna 23 without passing through power divider 13, and unused signal S2 is input to maintenance dummy antenna 25. There are no input signals to first antenna 21 and second antenna 22. In Figure 4(d), signal S2 is input directly to spare antenna 23 without passing through power divider 13, and unused signal S1 is input to maintenance dummy antenna 25. In this case as well, there are no input signals to first antenna 21 and second antenna 22.

[0024] In Figure 5(e), signal S1 is input to the first antenna 21 without passing through the power divider 13, and unused signal S2 is input to the maintenance dummy antenna 25. There are no input signals to the second antenna 22 and the spare antenna 23. In Figure 5(f), signal S2 is input to the second antenna 22 without passing through the power divider 13, and unused signal S1 is input to the maintenance dummy antenna 25. There are no input signals to the first antenna 21 and the spare antenna 23.

[0025] In this way, in this transmitting device 9, the above operations (1) to (6) are realized by controlling the coaxial switchers 30A to 30E and the continuous wave switcher 31 by the control unit 41. Therefore, for example, if one of the first transmitting unit 11 or the second transmitting unit 12 fails, it is possible to operate using only one of them. Similarly, if one of the first antenna 21 or the second antenna 22 fails, it is also possible to operate using only one of them or to operate using the spare antenna 23.

[0026] As described above, (5) an operation in which signal S1 is emitted only from the first antenna 21 (FIG. 5(e)), and (6) an operation in which signal S2 is emitted only from the second antenna 22 (FIG. 5(f)) are possible. However, for example, abnormalities may occur simultaneously in the first transmitter 11 and the first antenna 21, or abnormalities may occur simultaneously in the second transmitter 21 and the second antenna 22. For this reason, it is preferable that (7) an operation in which signal S1 is emitted only from the second antenna 22 and (8) an operation in which signal S2 is emitted only from the first antenna 21 are also possible. In other words, it is preferable that there are no restrictions on the combination of transmitters and antennas.

[0027] However, such operations (7) and (8) are not possible with the configuration of Fig. 1. Therefore, if an abnormality occurs simultaneously in the first transmitting unit 11 and the first antenna 21, or if an abnormality occurs simultaneously in the second transmitting unit 21 and the second antenna 22, the transmitting device 9 may not be able to transmit a signal.

[0028] 6 is a diagram showing the configuration of a transmitting device 1 according to an embodiment of the present invention. Compared to the transmitting device 9 described above, a coaxial switch (first antenna side coaxial switch) 30F is added to the first antenna 21 side, and a coaxial switch (second antenna side coaxial switch) 30G is added to the second antenna 22 side. The coaxial switchers 30F and 30G are also connected to each other.

[0029] Here too, there are provided a control unit 51 that controls the entire transmitting device 1 and controls switching of operations, an operation unit 52 used by the administrator, and a display unit 53 that displays information during this control. In this transmitting device 1, Figures 7(a) and (b) show the above operations (1) and (2), Figures 8(c) and (d) show the above operations (3) and (4), and Figures 9(e) and (f) show the above operations (5) and (6), and here the connection states of each coaxial switch and non-stop transmission switch 31 are shown.

[0030] Meanwhile, in this transmitting device 1, the above states (7) and (8) can also be realized. Figures 10(g) and (h) show the connection states in the above states (7) and (8). That is, by adding coaxial switchers 30F and 30G to the transmitting device 9, the above states (7) and (8) can also be realized. Therefore, even if abnormalities occur simultaneously in the first transmitting unit 11 and the first antenna 21, or if abnormalities occur simultaneously in the second transmitting unit 21 and the second antenna 22, signals can be transmitted normally by appropriately changing the combination of the transmitting unit and the antenna.

[0031] 2(b) and 2(c) in the coaxial switch (first antenna side coaxial switch) 30F and the coaxial switch (second antenna side coaxial switch) 30G, the operations corresponding to the states shown in FIGS. 2(b) and 2(c) will be specifically described below. Here, the states of the coaxial switch 30F shown in FIGS. 2(b) and 2(c) are referred to as a first state and a second state, respectively, and the states of the coaxial switch 30G shown in FIGS. 2(b) and 2(c) are referred to as a third state and a fourth state, respectively. That is, the coaxial switch 30F is switched between the first state and the second state, and the coaxial switch 30G is switched between the third state and the fourth state, thereby switching between the above-mentioned multiple operations including (7) and (8).

[0032] When the coaxial switch 30F is in the state shown in Fig. 2(b) (first state), connection (1) (2) (Figs. 7(a) and (b)) is realized in which the signal S1 or the signal S2 divided by the power divider 13 is input to the first antenna 21, and connection (5) (Fig. 9(e)) in which the signal S1 not passing through the power divider 13 is input to the first antenna 21 is realized. In Fig. 9(f), connection (6) is realized in which the signal S2 not passing through the power divider 13 is input to the second antenna 22, and in Figs. 8(c) and (d), connection (3) (4) is realized in which the signal S1 or the signal S2 not passing through the power divider 13 is input to the auxiliary antenna 23. However, in these cases, neither the signal S1 nor the signal S2 flows through any path in the coaxial switch 30F, and therefore, in these cases, the setting of the coaxial switch 30F is actually arbitrary.

[0033] Furthermore, when the coaxial switch 30F is in the state of Figure 2(c) (second state), connection (8) (Figure 10(h)) is realized in which the signal S2 output from the coaxial switch 30G is input to the first antenna 21, or connection (7) (Figure 10(g)) is realized in which neither the signal S1 nor the signal S2 is input to the first antenna 21 but the signal S1 is input to the coaxial switch 30G.

[0034] When the coaxial switch 30G is in the state of Fig. 2(b) (third state), connection (1) (2) (Figs. 7(a) and (b)) is realized in which the signal S1 or the signal S2 divided by the power divider 13 is input to the second antenna 22, and connection (6) (Fig. 9(f)) in which the signal S2 not passing through the power divider 13 is input to the second antenna 22 is realized. In Fig. 9(e), connection (5) is realized in which the signal S1 not passing through the power divider 13 is input to the first antenna 21, and in Figs. 8(c) and (d), connection (3) (4) is realized in which the signal S1 or S2 not passing through the power divider 13 is input to the auxiliary antenna 23. However, in these cases, neither the signal S1 nor the signal S2 flows through any path in the coaxial switch 30G, and therefore, the setting of the coaxial switch 30G in these cases is actually arbitrary.

[0035] Furthermore, when the coaxial switch 30G is set to the state of Figure 2(c) (fourth state), connection (7) (Figure 10(g)) is realized in which the signal S1 output from the coaxial switch 30F is input to the second antenna 22, or connection (8) (Figure 10(h)) is realized in which neither the signal S1 nor the signal S2 is input to the second antenna 22 but the signal S2 is input to the coaxial switch 30F.

[0036] That is, by appropriately selecting and combining these states in the coaxial switchers 30F and 30G, the above states (1) to (8) are realized.

[0037] FIG. 11 is a simplified schematic diagram showing the combinations of transmitter and antenna settings in the transmitter 1. There are two options for selecting the transmitter: either the first transmitter 11 (signal S1) or the second transmitter 12 (signal S2). There are four options for selecting the antenna: (a) using both the first antenna 21 and the second antenna 22, (b) using only the first antenna 21, (c) using only the second antenna 22, and (d) using only the auxiliary antenna 23. The transmitter 1 described above can operate in all eight (2 × 4 = 8) combinations. Here, the combinations are shown with solid lines, and the corresponding operations (1) to (8) are shown on the lines. The default state is (1), in which the first transmitter 11 is used as the transmitter and the first antenna 21 and second antenna 22 are used as the antennas. However, combinations (2) to (8) can be realized depending on the state of the transmitter 1.

[0038] Here, if the first transmitter 11 fails, the above operations (2), (4), (6), and (8) (Figs. 7(b), 8(d), 9(f), and 10(h)) are possible, and if the second transmitter 12 fails, the above operations (1), (3), (5), and (7) (Figs. 7(a), 8(c), 9(e), and 10(g)) are possible. Also, if the first antenna 21 fails, the above operations (3), (4), (6), and (7) (Figs. 8(c)(d), 9(f), and 10(g)) are possible, and if the second antenna 22 fails, the above operations (3), (4), (5), and (8) (Figs. 8(c)(d), 9(e), and 10(h)) are possible.

[0039] Furthermore, in the operations (3) and (4) above (FIG. 8(c)(d)), no signals are supplied to either the first antenna 21 or the second antenna 22, and no signals are supplied to the power divider 13. Furthermore, in the operations (5), (6), (7), and (8) above (FIGS. 9(e)(f), 10(g)(h)), no signals are supplied to the uninterruptible transmission switch 31 and the power divider 13. For this reason, as shown in FIG. 11, even if the power divider 13 fails, the operations (3) and (4) using only the spare antenna are possible, and even if the uninterruptible transmission switch 31 or the power divider 13 fails, the operations (5), (6), (7), and (8) using only one of the antennas are possible.

[0040] In this way, the above-described transmitting device 1 can switch its operation depending not only on the status of the transmitting unit and antenna, but also on the status of the continuous wave switching device 31 and power distributor 13. The control unit 51 controls such switching automatically or by the operation of an administrator depending on the status of these components.

[0041] When the control unit 51 cannot recognize a signal (first signal) S1 from the first transmission unit 11 or cannot recognize a signal (second signal) S2 from the second transmission unit 12, the control unit 51 can recognize that there is an abnormality in the first transmission unit 11 or the second transmission unit 12, respectively. Furthermore, when a signal is input to the first antenna 21 but the radio wave intensity of the output is low, or when a signal is input to the second antenna 22 but the radio wave intensity of the output is low, the control unit 51 can recognize that there is an abnormality in the first antenna 21 or the second antenna 22, respectively. The same applies to the spare antenna 23.

[0042] Furthermore, when there is an input to the power divider 13 but the respective distributed outputs are not obtained, the control unit 51 can recognize that there is an abnormality in the power divider 13.

[0043] The control unit 51 sets the switches (coaxial switchers 30A to 30G, uninterruptible wave switch 13) to either the state shown in Fig. 2(b) or the state shown in Fig. 2(c). If this setting is not performed as controlled, or if the control unit 51 is unable to determine which of these states is currently in (if it is unable to recognize either state, or if it recognizes that it is in both states), it can recognize that there is an abnormality in this switch. Furthermore, if the uninterruptible wave switch 13 is provided with an internal power supply, it can also recognize that there is an abnormality in the uninterruptible wave switch 13 if an abnormality is found in this internal power supply.

[0044] The control unit 51 can display the presence or absence of an abnormality in each component including such a switch, and the status recognized by each switch, on the display unit 53. As described above, the switching of the operations (1) to (8) above may be performed automatically by the control unit 51, or may be performed by an administrator using the operation unit 52, and at this time, the administrator can check the status of each component on the display unit 53. The content to be displayed on the display unit 53 may be transmitted to an external device outside the transmitting device 1 using a network or the like, and the administrator may perform this operation using an external remote control device or the like.

[0045] The above-described transmitting device 1 is configured by adding coaxial switchers 30F and 30G to the transmitting device 9 in Fig. 1. However, the same operation as that of the transmitting device 9 in Fig. 1 can also be realized with other configurations, particularly with different combinations of coaxial switchers, etc. In this case, similar operation can be achieved by using a coaxial switch on the first antenna side and a coaxial switch on the second antenna side in the same way.

[0046] The present invention has been described above based on an embodiment. This embodiment is merely an example, and it will be understood by those skilled in the art that various modifications are possible in the combination of the respective components, and that such modifications are also within the scope of the present invention. [Explanation of symbols]

[0047] 1, 9 Transmitting device 11 First transmission unit 12 Second transmission unit 13 Power divider 21 First Antenna 22 Second Antenna 23 Auxiliary antenna 24 Pseudo Antenna 25 Maintenance dummy antenna 30, 30A~30E coaxial switch 30F Coaxial switch (coaxial switch on the first antenna side) 30G coaxial switch (second antenna side coaxial switch) 31 Unstoppable switching device 41, 51 Control unit 42, 52 Operation section 43, 53 Display section S1 signal (first signal) S2 signal (second signal)

Claims

1. A transmitting device in which a first signal emitted from a first transmitting unit and a second signal emitted from a second transmitting unit are switched and emitted from an antenna, The antenna includes a first antenna and a second antenna, a power distributor that distributes a selected one of the first signal and the second signal into two systems and outputs the two signals; a plurality of coaxial switches each capable of switching between two combinations of connections between two input terminals and two output terminals; Equipped with a first antenna side coaxial switch and a second antenna side coaxial switch, both of which are one of the coaxial switches, are connected to the first antenna and the second antenna, respectively, and the first antenna side coaxial switch and the second antenna side coaxial switch are also connected to each other; By setting the first antenna side coaxial switch, the second antenna side coaxial switch, and the other coaxial switches, A transmitting device characterized by switching between the following operations: an operation in which either the first signal or the second signal is selected and output from the first antenna and the second antenna; an operation in which only the first signal is output from the first antenna and no signal is output from the second antenna; an operation in which only the second signal is output from the second antenna and no signal is output from the first antenna; an operation in which only the first signal is output from the second antenna and no signal is output from the first antenna; and an operation in which only the second signal is output from the first antenna and no signal is output from the second antenna.

2. In the first antenna side coaxial switch, a first state in which a connection is made to input the first signal divided by the power divider or the second signal divided by the power divider to the first antenna, or a connection is made to input the first signal not passing through the power divider to the first antenna; a second state in which the second signal output from the second antenna side coaxial switch is input to the first antenna, or the first signal is input to the second antenna side coaxial switch without inputting either the first signal or the second signal to the first antenna; is switched and set, In the second antenna side coaxial switch, a third state in which the first signal divided by the power divider or the second signal divided by the power divider is connected to the second antenna, or the second signal not passing through the power divider is connected to the second antenna; a fourth state in which the first signal output from the first antenna side coaxial switch is input to the second antenna, or the second signal is input to the first antenna side coaxial switch without inputting either the first signal or the second signal to the second antenna; was switched and set, 2. The transmitting device according to claim 1 .

3. A non-stop switching device is provided for switching an input signal to the power distributor, The transmitting device according to claim 1 or 2, characterized in that when the non-stop transmission switch fails, one of the following operations is selected: only the first signal is output from the first antenna and no signal is output from the second antenna; only the second signal is output from the second antenna and no signal is output from the first antenna; only the first signal is output from the second antenna and no signal is output from the first antenna; and only the second signal is output from the first antenna and no signal is output from the second antenna.

Images