JP2008131375A - High-frequency electric power combining or distributing unit, and wireless relay device using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-frequency electric power combining unit called as a power switchable combining unit, which is suitable for a wireless relay device for high-frequency signals of a cellular phone and keeps the impedance of a transmission line so as to be constant even if signals inputted from a plurality of input terminals are combined in an arbitrary combination in the transmission line. <P>SOLUTION: In a high frequency electric power combining or distributing unit, corresponding to each of a plurality of prespecified combining patterns such as two branch or three branch, a board 13 provided with the combining units U1' to U4' that are composed of combining transmission lines that impedances are prematched between connection terminals arranged at prespecified positions, a board 15 which has connectors C2, C6, C18, C23 and C9 that are input terminals IN1 to IN4 and an output terminal OUT, and a jumper line 14, and a base B' mounted with switches are layered and connected to one another through a bia 16. Thereby, impedances can be combined so as to be constant only by switching switches so as to connect the arbitrary input terminals IN1 to IN4 to the combining units U1' to U4'. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a high-frequency power combiner / distributor suitably implemented in a high-frequency signal wireless relay device such as terrestrial digital television broadcasting and a mobile phone, and a wireless relay device using the same.

  A television broadcast relay station, a mobile phone base station, and the like require a large transmission power of several watts to several hundreds of watts to relay the high-frequency signal. And in order to obtain such a large transmission power and to avoid momentary interruptions in broadcasting and telephone calls, the received signal is distributed to multiple amplifiers, and the signals amplified by multiple amplifiers are synthesized. A transmission signal is created. Used in such applications is a device called a divider for the distribution and a device called a combiner for the synthesis. These devices are configured by connecting one end of a single transmission path and one end of a branch transmission path, and when the other end of the single transmission path is an output end, the branch transmission path When the other end of the single transmission path becomes the input end, the other end of the branch transmission path becomes the output end and becomes the divider. It can be shared by switching the input and output of. In addition, each branch transmission path is provided with a mechanical switch for opening and closing a high-frequency signal so that the malfunction circuit (amplifier or the like) can be operated. What is configured in this way is a high frequency power combiner or distributor called a power switchable combiner divider.

  A typical prior art of such a power switchable combiner divider has been previously proposed in Patent Document 1 by the present applicant. FIG. 15 is a plan view showing the structure of the conventional power switchable combiner / divider 51 with the lid removed. The power switchable combiner / divider 51 is provided in a casing 54 with a high-frequency power synthesis or distribution board 55 and switches sw1, sw2, sw3; sw11, sw12 (collectively referred to as “general name”). , Hereinafter denoted by reference symbol sw).

  This power switchable combiner divider 51 is used for the above-mentioned terrestrial digital television broadcasting, and synthesizes or distributes three signals. Therefore, one end of the three branch transmission lines k1, k2, and k3 is commonly connected to one end of the single transmission line k0, and the other end of the single transmission line k0 is connected to the printed circuit board 55. Soldered to the connector pin p0 of the connector j0 provided on the back surface, the other end of each branch transmission path k1, k2, k3 is the connector pin p1, of the connector j1, j2, j3 provided on the front surface of the housing 54. Soldered to p2 and p3, respectively. In the power switchable combiner / divider 51, each of the connectors j1, j2, and j3 serves as an input terminal, and when the connector j0 serves as an output terminal, it serves as a combiner, and each of the connectors j1, j2, and j3 serves as an output terminal. When the connector j0 becomes the input terminal, it becomes a divider.

  Each connector j0 to j3 is fixed with a screw fixed to the end of the coaxial cable with a screw. As a result, the transmission lines k0 to k3 are connected to the central conductor of the coaxial cable via the connector pins p0 to p3, and the casing 54 is connected to the outer conductor of the coaxial cable connected to GND.

  The printed circuit board 55 is a double-sided board, and the transmission lines k0 to k3 are formed on the surface, and the stub patterns st1 and st2 are formed. The remaining area is the transmission lines k0 to k3. A GND pattern 57 is formed by opening a gap necessary for impedance matching with k3 and the stub patterns st1 and st2 (for example, when the pattern width of the transmission path is 2 mm, the above-mentioned 50Ω is about 0.6 mm). Further, the back surface of the substrate 55 is a GND pattern on the entire surface, and through holes 59 for connecting the front and back GND patterns and improving the connectivity to the GND, particularly on both sides of the transmission lines k0 to k3. A large number are densely formed. As a result, the GND pattern around each of the transmission lines k0 to k3 can reliably secure GND, and impedance matching can be performed satisfactorily.

On the other hand, in the prior art of Patent Document 2, it is possible to switch between the case where the input of the first system is through-outputted by a switch and the case where the input is passed through the combiner / distributor, and the pre-impedance-matched combiner / distributor passes. In such a case, it is configured to synthesize with the input of the second system.
JP 2005-277849 A Japanese Patent Laid-Open No. 11-355002

  In the prior art disclosed in Patent Document 1, any connector j1, j2, j3 can be associated with the connector j0 and combined or distributed. However, it is difficult to obtain sufficient impedance matching by adjusting the stub patterns st1 and st2. In particular, it is difficult to achieve more than 4 synthesis / distribution.

  On the other hand, the prior art of Patent Document 2 uses a pre-impedance-matched combiner / distributor, so that impedance matching can be obtained, but only a predetermined combination of terminals can be combined / distributed. There's a problem.

  An object of the present invention is to provide a transmission line that combines or distributes signals from a plurality of input terminals even if they are combined in an arbitrary combination or distributed to a plurality of output terminals in an arbitrary combination. It is to provide a high frequency power combiner / distributor that can keep the impedance of the signal constant and a wireless relay device using the same.

  In the high frequency power combiner or distributor according to the present invention, when one end of a plurality of branch transmission lines is connected to one end of a single transmission line, and the other end of the single transmission line becomes an output end, the branch transmission line When the other end of the single transmission path is the input end, the other end of the branch transmission path is the output end, so that the power of the high frequency signal is synthesized or distributed. In the high frequency power combiner / distributor configured as described above, from the transmission path for combining or distributing, in which impedances are previously matched between connecting terminals provided at predetermined positions corresponding to each of a plurality of predetermined branch patterns. A first board having a combination / distribution unit, a connector serving as an input end and an output end, a connection terminal connected to a connection terminal on the first board side, and the combination / distribution unit. And a second board to which they are connected via a transmission line, and the second board can select a desired combining / distributing unit on the first board. Further, the correspondence between the connection terminal corresponding to the combining / distributing unit and the connector of the signal to be combined or distributed using the combining / distributing unit is switched by the switch.

  According to the above configuration, it is preferably implemented in a radio relay device for high-frequency signals such as terrestrial digital television broadcasting and mobile phones, connecting one end of a single transmission path and one end of a branch transmission path, In the high-frequency power combiner / distributor called a power switchable combiner / divider that is provided with a high-frequency switch for opening and closing a high-frequency signal in the transmission line, the above-mentioned impedance-matched combination that is actually combined or distributed Alternatively, a synthesis / distribution unit including a transmission path for distribution is mounted on the first board, and a plurality of connectors serving as input and output ends and the synthesis / distribution unit are selected on a second board provided separately. The switch for mounting is mounted, and these boards are connected by a connecting terminal. Then, the combination / distribution unit is selected by a combination of the connection mode of the connection terminal and the switching mode of the switch.

  Therefore, on the first substrate, corresponding to each of a plurality of predetermined branch patterns such as 2-branch and 3-branch, a transmission path for combining or distributing in which the impedance is matched in advance is provided. The correspondence between the connection terminal and the connector is switched by a switch so that the connector of the signal to be synthesized or distributed is connected to the connection terminal provided at the end of the transmission line through the connection terminal on the second substrate side. Even if the signals from multiple input terminals are combined in any combination, or even if the signals are distributed to multiple output terminals in any combination, the impedance of the transmission line that performs the combination or distribution is reduced. Can be kept constant.

  The high-frequency power combiner / distributor of the present invention has five connectors, and has three sets of two branches and one set of three branches as the combiner / distributor, and a single output terminal or input terminal. Connect any one of the four input or output connectors to the connector to be connected with the through output and combine or distribute any two using any one of the two branches And any three of them are connected to be combined or distributed using three branches, and four are connected to be combined or distributed using three sets of two branches.

  According to said structure, the connector used as four input terminals or output terminals can be made to respond | correspond with arbitrary combinations with respect to the connector used as a single output terminal or input terminal.

  Furthermore, in the high frequency power combiner / distributor according to the present invention, the first and fourth connectors of the four connectors are for the first through and one branch terminal of the two two branches in the first stage. And three connection terminals for one branch terminal of each of the three branches, and are connected to any one of them by three switches, respectively, and the second and four of the four connectors The third connector is disposed between four connection terminals for the first through, for the other branch terminal of the two two branches in the first stage, and for the two branch terminals of the three branches. In addition, each of them is connected to any one of them by four switches, and the connection terminals for the two two-branch common terminals of the first stage are for the second through and for the second stage 2 Two connecting ends for one branch terminal of the branch Are connected to any one of them by two switches, and each of the first through connection terminals is for the second through and the second branch of the second stage. Are arranged between two connection terminals for one branch terminal and connected to any one of them by two switches, respectively, and a single connector is used for the second through, It is arranged between three connection terminals for the second-stage two-branch common terminal and the three-branch common terminal, and is connected to any one of them by three switches. And

  According to the above configuration, for example, in the case of a combiner, one of the four inputs is selectively output to the 25 switches using the two sets of two branches and the one set of three branches. Or, the impedance of the transmission line can be kept constant even if the four inputs are combined in any combination, or two are combined, three are combined, or all four inputs are combined.

  In the high-frequency power combiner / distributor according to the present invention, the switch is separated into a contact portion and a switch body, and the contact portion is disposed in a waveguide space formed on a metal base serving as the second substrate. Thus, the coaxial line is formed, and the movable contact of each switch is brought into direct contact with the connector and the central conductor of the connection terminal.

  According to said structure, the fixed contact of a switch becomes a center conductor of a connector and a connection terminal, and there is no physical distance between those connectors and a connection terminal, and a switch, and it can improve a high frequency characteristic. .

  Furthermore, the high-frequency power combiner or distributor according to the present invention is characterized in that the rectangular switch body connected by a card is attached to the movable contact by being inclined by 45 ° around the axis of the card.

  According to the above configuration, when the movable contacts are orthogonally arranged so that one connector or connecting terminal is shared by the movable contacts of a plurality of switches, the switch body is inclined by 45 ° with respect to the movable contacts. Thus, the interference between the switch bodies can be reduced.

  Therefore, the length of the movable contact, that is, the arrangement pitch of the connectors and the connecting terminals can be reduced to reduce the size.

  The radio relay apparatus of the present invention is characterized in that the high-frequency power combiner / distributor includes an amplifier individually corresponding to each branch transmission line.

  According to the above configuration, even if signals from a plurality of input terminals are combined in an arbitrary combination, or even if a signal is distributed to a plurality of output terminals in an arbitrary combination, transmission is performed to combine or distribute the signals. A wireless relay device that can keep the impedance of the road constant can be realized.

  As described above, the high-frequency power combiner / distributor of the present invention is preferably implemented in a high-frequency signal wireless relay device such as a terrestrial digital television broadcast or a mobile phone, and includes one end of a single transmission path and a branch transmission path. In a high-frequency power combiner / distributor called a power-switchable combiner / divider, which is connected to one end of the switch and provided with a high-frequency switch for opening and closing a high-frequency signal in each branch transmission line A combination / distribution unit composed of a transmission path for combination or distribution that has been impedance matched in advance is mounted on a first board, and a connector that serves as a large number of input terminals and output terminals on a separately provided second board And a switch for selecting the combination / distribution unit are mounted, and the boards are connected by a connection terminal, and the connection mode of the connection terminal and the switch In combination with switching mode, selects the synthesis and distribution unit.

  Therefore, on the first substrate, corresponding to each of a plurality of predetermined branch patterns such as 2-branch and 3-branch, a transmission path for the synthesis or distribution in which the impedance is matched in advance is provided, The correspondence between the connection terminal and the connector is connected by a switch so that the connector of the signal to be synthesized or distributed is connected to the connection terminal provided at the end of the transmission line through the connection terminal on the second substrate side. Even if the signals from multiple input terminals are combined in an arbitrary combination by simply switching, the impedance of the transmission line that performs the combination or distribution even if the signals are distributed to multiple output terminals in any combination Can be kept constant.

  In addition, the high frequency power combiner / distributor of the present invention has five connectors as described above, and has three sets of two branches and one set of three branches as the combiner / distributor, and a single output. Connect any one of the four input or output connectors to the connector that becomes the end or the input end with through output, and synthesize any two using one of the two branches Connect to distribute, connect to combine or distribute any three using 3 branches, connect to combine or distribute 4 using 3 sets of 2 branches.

  Therefore, the connectors that serve as the four input ends or output ends can be made to correspond to the connectors that serve as the single output end or input end in any combination.

  Furthermore, the high-frequency power combiner / distributor of the present invention uses the three sets of two branches and the set of three branches for 25 switches as described above.

  Therefore, for example, in the case of a combiner, any one of the four inputs can be selectively output, or any combination of the four inputs can be combined into two or three, or all four inputs can be combined. Even if these are combined, it is possible to realize a configuration capable of keeping the impedance of the transmission line constant.

  In the high frequency power combiner / distributor according to the present invention, as described above, the switch is separated into a contact portion and a switch body, and the contact portion is formed on a metal base serving as the second substrate. By disposing in the wave space, a coaxial line is formed, and the movable contact of each switch is brought into direct contact with the connector and the central conductor of the connection terminal.

  Therefore, the fixed contact of the switch becomes the central conductor of the connector and the connection terminal, and there is no physical distance between the connector and the connection terminal and the switch, and the high frequency characteristics can be improved.

  Furthermore, the high-frequency power combiner / distributor according to the present invention can move the switch body when the movable contacts are arranged orthogonally in order to share one connector or connecting terminal among the movable contacts of a plurality of switches as described above. Inclination of 45 ° with respect to the contact point reduces the interference between the switch bodies.

  Therefore, the length of the movable contact, that is, the arrangement pitch of the connectors and the connecting terminals can be reduced to reduce the size.

  In addition, as described above, the radio relay apparatus of the present invention includes the high-frequency power combiner / distributor including an amplifier individually corresponding to each branch transmission line.

  Therefore, even if signals from a plurality of input ends are combined in an arbitrary combination, or signals are distributed to a plurality of output ends in an arbitrary combination, the impedance of the transmission line that performs the combination or distribution is reduced. A wireless relay device that can be kept constant can be realized.

[Embodiment 1]
FIG. 1 is a front view of a power switchable combiner 1 which is a high-frequency power combiner or distributor according to a first embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a bottom view thereof. FIG. 4 is an electric circuit diagram. The power switchable combiner 1 is housed in a housing (not shown) into which a coaxial cable from an amplifier or an antenna is drawn. Hereinafter, although a combiner is demonstrated, it cannot be overemphasized that this invention is applicable also to a divider. Referring to FIG. 4, this power switchable combiner 1 is generally configured to include four sets of synthesis units U1 to U4, three stages of switch units S1 to S3, and a control board 2. .

  The combining units U1 to U4 constitute a first substrate, and include transmission lines in which impedances are matched in advance corresponding to each of a plurality of predetermined branch patterns between connecting terminals provided at predetermined positions. The three sets of combining units U1, U3, U4 are three branches with two inputs and one output, and stubs ST1, ST3, ST4 are inserted between the two inputs, and the impedance is matched between the respective inputs and outputs as described above. ing. The remaining set of the combining unit U2 has four branches of three inputs and one output, and stubs ST21 and ST22 are inserted between the three inputs, and impedances are matched between the respective inputs and outputs.

  The switch parts S <b> 1 to S <b> 3 are mounted on the base B and constitute the second substrate 3. Here, the connectors, terminals and switches are indicated by numbers, and the same members are assigned the same numbers in FIGS. The connector and the connecting terminal are indicated by a reference numeral C with a two-digit number corresponding to the number, and the switch is indicated by a reference numeral Q with a two-digit number corresponding to the number. The first board-side connector and the second board-side connector that are fitted to each other are assigned the same numbers. The control board 2 can individually control ON / OFF of 25 switches Q1 to Q25 (to be collectively referred to as a reference symbol Q hereinafter) described later.

  FIG. 5 is a front view of the substrate 3. The base B is formed by combining two base blocks B1 and B2 made of a metal plate. One base block B1 includes 24 connectors and connection terminals C1 to C24 (hereinafter collectively referred to as reference symbol C). The 25 base switches B2 and the control board 2 are mounted on the other base block B2.

  Each switch Q is separated into a movable contact Qa portion and a switch body Qb as shown in FIGS. 6 and 7, and the movable contact Qa portion is a waveguide space formed in the base block B1. A coaxial line is formed by being arranged in H, and a switching operation is performed by directly contacting / separating from the central conductor Ca of the connector C facing the waveguide space H. As a result, there is no physical distance between the connector and the connecting terminal C and the switch Q, and the high frequency characteristics can be improved. 7A shows an ON (contact) state of the switch Q, and FIG. 7B shows an OFF (separation) state. FIG. 8 is a bottom view of the base block B1 and shows the waveguide space H. FIG.

  The switch body Qb mounted on the outside of the base block B2 and the movable contact Qa portion disposed in the waveguide space H have a waveguide space H between the connectors C to be contacted / separated in the base block B2. Are connected by a card Qc through a hole h formed at the center of the card. In the connector and the connection terminal C, the connector and the connection terminals C4, C9, and C12 are formed of a large-capacity N connector, and the remaining connectors and the connection terminals C1 to C3, C5 to C8, C10, C11, and C13 to C24 are small. It consists of a capacity SMA connector. In the base block B1, the waveguide space H is cut vertically and horizontally between these connectors and the connecting terminal C, and each connector C is screwed into the node from the outside of the base block B1, and the central conductor Ca protrudes into the waveguide space H as the fixed contact.

  As shown in FIGS. 2 and 9, the rectangular switch body Qb is inclined by 45 ° around the axis of the card Qc with respect to the waveguide space H formed vertically and horizontally, that is, the movable contact Qa. Installed. As a result, as will be described later, since the movable contacts Qa of the plurality of switches Q share a single connector or connecting terminal C, interference between the switch bodies Qb can be reduced when the movable contacts Qa are arranged orthogonally. The length of the movable contact Qa, that is, the arrangement pitch of the connectors and the connecting terminals C can be reduced to reduce the size.

  FIG. 10 is a bottom view of the substrate 3. The circuit configuration of the power switchable combiner 1 according to the present embodiment will be described below with reference to FIGS. This power switchable combiner 1 has five connectors C2, C6, C9, C18, C23, the connector C2 becomes the first input end IN1, the connector C6 becomes the second input end IN1, and the connector C9 The output terminal OUT, the connector C18 becomes the third input terminal IN3, and the connector C23 becomes the fourth input terminal IN4. The remaining connection terminals C1, C3 to C5, C7, C8, C10 to C17, C19 to C22, and C24 are used to connect the synthesis units U1 to U4 and the substrate 3. Then, any two inputs are synthesized by using any one of the three sets of synthesis units U1, U3, U4, and any three inputs are synthesized by using the synthesis unit U3. All the combining units U1, U3, U4 are used to synthesize four inputs, and none of the combining units U1 to U4 is used to output any one input through.

  In order to realize such a combination, the connectors C2 and C23 corresponding to the first and fourth input terminals IN1 and IN4 among the four connectors C2, C6, C18, and C23 on the input side Connection terminals C1 and C22 for through, connection terminals C3 and C24 for one input terminal of the second combination unit U1 and U3 of the first stage, connection terminal C7 for one input terminal of the three combination unit U2, Each of the switches is arranged between C19 and is connected to any one of them by three switches Q5, Q8; Q1, Q4; Q2, Q3. Of the four connectors C2, C6, C18, C23 on the input side, the connectors C6, C18 corresponding to the second and third input terminals IN2, IN3 are the first through connection terminals C1, C22. Between the connection terminals C5 and C17 for the input terminals of the first two-combining units U1 and U3 and the connection terminals C7 and C13 for the two input terminals of the three-combining unit U2; C19 and C13, respectively. And are connected to any one of them by four switches Q9, Q12; Q13, Q14; Q6, Q10, Q7, Q11, respectively.

  Furthermore, the connection terminals C11 and C16 for the output terminals of the first-stage two combining units U1 and U3 are connected to the second through-connecting terminal C15 and one of the second-stage two combining units U4. They are respectively disposed between the input terminals C10 and C21 and are connected to any one of them by two switches C18 and C16; C20 and C17, respectively. Each of the first through connection terminals C1 and C22 includes a second through connection terminal C15 and connection terminals C10 and C21 for one input terminal of the second combining unit U4 in the second stage. Are connected to any one of them by two switches Q21 and Q19; Q22 and Q15, respectively. Furthermore, the single connector C9 on the output side includes the second through connection terminal C8, the connection terminal C4 for the output terminal of the second combination unit U4 in the second stage, and the output terminal of the three combination unit U2. And the connection terminal C12, and are connected to any one of them by three switches Q25, Q24, Q23.

  Therefore, the switches Q1 to Q14 constitute the first stage switch unit S1, the switches Q15 to Q22 constitute the second stage switch unit S2, and the switches Q23 to Q25 configure the third stage switch unit S3. Constitute.

  And when the said synthetic | combination parts U1-U4 used as the external routing with respect to the board | substrate 3 are used, those corresponding connection terminal C3, C5, C11; C7, C13, C19, C12; C24, C17, When C16; C10, C21, C4 are connected and a through line is used, the corresponding connecting terminals C1, C14; C22, C20; C15, C8 are connected by a jumper line serving as the through line. The

  Therefore, for example, as shown in FIG. 11, two jumper wires are connected between the connecting terminals C1, C14; C15, C8, the switches Q5, Q21, Q25 are turned on, and the remaining switches Q1-Q4, Q6- By turning off Q20 and Q22 to Q24, the input terminal IN1 can be connected to the output terminal OUT and through output can be performed.

  Further, for example, as shown in FIG. 12, two jumper wires are connected between the connecting terminals C1, C14; C22, C20, respectively, and the combining unit U4 is connected between the connecting terminals C10, C21, C4, and the switch Q9. , Q12, Q17, Q22, Q24 are turned ON, and the remaining switches Q1-Q8, Q10, Q11, Q13-Q16, Q18-Q21, Q23, Q25 are turned OFF to synthesize the inputs from the input terminals IN2, IN3. And output to the output terminal OUT.

  Furthermore, for example, as shown in FIG. 13, the combining sections U1, U3, U4 are connected between the connecting terminals C3, C5, C11; C24, C17, C16; C10, C21, C4, respectively, and the switches Q1, Q4, Q13 are connected. -Turn on Q15, Q20, Q24 and turn off the remaining switches Q2, Q3, Q5-Q12, Q16-Q19, Q21-Q23, Q25 to synthesize all inputs from the input terminals IN1-IN4 Can be output to the output terminal OUT.

  In this way, the pre-impedance-matched combining units U1 to U4 and jumper wires that are actually combined or distributed are connected to the separately provided substrate 3 according to the required number of combinations, the connection mode, and the switches Q1 to Q1. In combination with the switching mode of Q25, any one of the inputs from the four input terminals IN1 to IN4 is selectively output to the output terminal OUT, or the inputs from the four input terminals IN1 to IN4 are arbitrarily set. Even if two combinations are combined, three are combined, or all four inputs are combined, the impedance of the transmission line can be kept constant.

[Embodiment 2]
FIG. 14 is an exploded perspective view of a power switchable combiner 11 that is a high-frequency power combiner or distributor according to a second embodiment of the present invention. The power switchable combiner 11 is similar to the power switchable combiner 1 shown in FIGS. 1 to 13 described above, and corresponding portions are denoted by the same reference numerals and description thereof is omitted. It should be noted that in the power switchable combiner 11, the synthesis units U1 to U4 that have been appropriately attached and detached as necessary are collectively mounted on the substrate 13 as synthesis units U1 ′ to U4 ′. The connectors C2, C6, C18, C23, C9 and the jumper wires 14 that become the input terminals IN1 to IN4 and the output terminal OUT are mounted on the substrate 15 and separated from the base B ′ on which the switch Q is mounted. They are stacked on top of each other and connected to each other via vias 16.

  By configuring in this way, it is not necessary to replace the combining units U1 to U4 or jumper wires with respect to changes in the number of composites, etc., and it can be dealt with only by switching the switch Q. Can be improved.

  By combining the power switchable combiners 1 and 11 of the present invention with a power amplifier, the power switchable combiners 1 and 11 can be suitably implemented in a radio relay apparatus for high frequency signals such as terrestrial digital television broadcasting and mobile phones.

  Here, in Japanese Patent Laid-Open No. 2001-156509, signals from a plurality of input terminals are arbitrarily combined by a first switch, and the combined output is output to an output terminal via a transmission line selected by the second switch. A switching power combiner is shown in which the impedance mismatch due to the difference in the number of inputs and paths is eliminated by adjusting the stub pattern by switching the second switch. However, in this prior art, it is difficult to sufficiently match impedances in all combinations of the number of inputs and paths, and impedance matching varies depending on paths. That is, although impedance matching on the output side can be obtained, the impedance viewed from the input end side changes depending on the number of combined channels and which channel is combined, and between the amplifier and the first switch. In addition, an isolator is required.

  On the other hand, in the present embodiment, the switches Q1 to Q25 are switched according to the number of inputs and the paths, and the combined units U1 to U4; U1 ′ to U4 ′ in which impedance matching has been previously taken are combined. The impedance can be sufficiently matched in all combinations of the number of inputs and paths. Thereby, the impedance viewed from the input side is also constant, the return loss can be suppressed, and the isolator can be omitted.

1 is a front view of a power switchable combiner that is a high-frequency power combiner or distributor according to a first embodiment of the present invention. It is a top view of the power switchable combiner of FIG. It is a bottom view of the power switchable combiner of FIG. It is an electric circuit diagram of the power switchable combiner of FIG. It is a front view of the board | substrate in the said power switchable combiner. It is a disassembled perspective view which shows the structure of a switch. It is sectional drawing which shows the structure of the said switch. It is a bottom view of a base block. It is a figure for demonstrating the attachment state of the said switch. It is a bottom view of a substrate. It is a figure which shows the aspect of wiring in the case of carrying out through output of the 1st input. It is a figure which shows the aspect of wiring in the case of combining and outputting the 2nd and 3rd input. It is a figure which shows the aspect of the wiring in the case of combining and outputting the 1st-4th input. It is a disassembled perspective view of the power switchable combiner which is the high frequency electric power combiner | distributor or divider | distributor which concerns on the 2nd Embodiment of this invention. 1 is a front view of a typical prior art power switchable combiner divider. FIG.

Explanation of symbols

1,11 Power switchable combiner 2 Control board 3, 13, 15 Board 14 Jumper wire 16 Via B Base B1, B2 Base block C1, C3-C5, C7, C8, C10-C17, C19-C22, C24 Connecting terminal C2, C6, C9, C18, C23 Connector Ca Central conductor H Waveguide space Q1-Q25 Switch Qa Movable contact Qb Switch body Qc Card S1-S3 Switch part ST1-ST4 Stub U1-U4; U1'-U4 'Composite part

Claims (6)

When one end of a plurality of branch transmission paths is connected to one end of a single transmission path, and the other end of the single transmission path is an output end, the other end of the branch transmission path is an input end. When the other end of one transmission line becomes an input end, the other end of the branch transmission line becomes an output end, respectively, in a high frequency power combiner or distributor that combines or distributes the power of a high frequency signal,
Corresponding to each of a plurality of predetermined branch patterns, a first substrate having a synthesis / distribution unit comprising the transmission path for the synthesis or distribution in which impedances are previously matched between connecting terminals provided at predetermined positions. When,
A connector for connecting to the connector serving as the input end and the output end, the connecting terminal connected to the connecting terminal on the first board side, and a switch for selecting the combining / distributing unit are mounted, and these are connected via a transmission line. 2 substrates,
In the second substrate, the connection terminal corresponding to the combination / distribution unit and the combination / distribution unit are used so that a desired combination / distribution unit can be selected on the first substrate. A high-frequency power combiner / distributor characterized in that the corresponding relationship of a signal to be combined or distributed with a connector is switched by the switch.   It has 5 connectors and, as the combiner / distributor, it has 3 sets of 2 branches, 1 set of 3 branches, and 4 inputs or outputs for a connector that is a single output or input. Connect any one with the through output, connect any two using any one branch to synthesize or distribute, and synthesize any three using three branches 2. The high frequency power combiner / distributor according to claim 1, wherein the high frequency power combiner / distributor is connected so as to be distributed and connected so as to combine or distribute four using three sets of two branches. Of the four connectors, the first and fourth connectors are 3 for the first through, for one branch terminal of the two two branches in the first stage, and for one branch terminal of the three branches. Each of the four connectors is connected to any one of them by a switch, and the second and third connectors of the four connectors are for the first through and the first stage. It is arranged between four connection terminals for the other branch terminal of two two branches and for two branch terminals of three branches, and is connected to any one of them by a switch,
The connection terminals for the two two-branch common terminals in the first stage are respectively disposed between the two connection terminals for the second through and for one branch terminal of the second branch of the second branch. Are connected to any one of them by a switch, and each of the first through connection terminals is for the second through and for one branch terminal of the second branch of the second branch. Arranged between two connecting terminals and connected to any one of them by a switch,
A single connector is disposed between the three connection terminals for the second through, the second branch common terminal of the second stage, and the three branch common terminal, respectively, and they are switched by a switch. The high-frequency power combiner or distributor according to claim 2, wherein the high-frequency power combiner or distributor is connected to any one of the above.   The switch is separated into a contact portion and a switch body, and the contact portion is disposed in a waveguide space formed on a metal base serving as the second substrate, thereby forming a coaxial line and each switch. The high-frequency power combiner or distributor according to any one of claims 1 to 3, wherein the movable contact is directly brought into contact with a central conductor of the connector and the connecting terminal.   5. The high-frequency power combiner or distributor according to claim 4, wherein the rectangular switch body connected by a card is inclined with respect to the movable contact by 45 degrees around the axis of the card.   The radio relay apparatus according to any one of claims 1 to 5, wherein the high-frequency power combiner / distributor includes an amplifier individually corresponding to each branch transmission path.

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