WO2006027828A1 - 電力分配装置、電力合成装置、モノパルス信号合成回路、アレーアンテナ給電回路およびビーム形成回路 - Google Patents
電力分配装置、電力合成装置、モノパルス信号合成回路、アレーアンテナ給電回路およびビーム形成回路 Download PDFInfo
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- WO2006027828A1 WO2006027828A1 PCT/JP2004/012990 JP2004012990W WO2006027828A1 WO 2006027828 A1 WO2006027828 A1 WO 2006027828A1 JP 2004012990 W JP2004012990 W JP 2004012990W WO 2006027828 A1 WO2006027828 A1 WO 2006027828A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/282—Transmitters
Definitions
- Power distribution device power combiner, monopulse signal combiner, array antenna feed circuit, and beam forming circuit
- the present invention relates to a power distribution device, a power combiner, a monopulse signal combiner using the function, an array antenna device, and a beam forming device, each having a circuit that compensates for the frequency characteristics of the phase difference due to the difference in tube axis length. It relates to the circuit.
- Japanese Patent No. 2592476 “Wideband Hybrid Coupler” describes an in-phase distribution type short slot waveguide power distributor having an inductive phase shifter and a capacitive phase shifter at two output terminals. "It is described in page 2 and Fig. 2 (Patent Document 1). The waveguide power distributor will be described with reference to FIG. 3 of the present invention to help understanding.
- the conventional waveguide power distributor 9 has the same opening diameter and the mutual width. It has two rectangular waveguides 5 and 6 that are arranged so that their narrow faces face each other and their tube axes are parallel to each other.
- the two waveguides 5 and 6 are connected to each other by a rectangular coupling hole 7 in a predetermined section on the opposite surface, thereby forming a wide rectangular waveguide section.
- a rectangular coupling hole 7 in one rectangular waveguide 5, four capacitive apertures are arranged at positions beyond the coupling hole 7 (a rectangular waveguide extending to the right side of the coupling hole 7 in FIG. 3), and the other In the rectangular waveguide 6, four inductive stops are arranged at positions beyond the coupling hole 7.
- an electromagnetic wave in a certain frequency band from the terminal P1 of one rectangular waveguide 5 is a rectangular waveguide fundamental mode (rectangular waveguide
- TE10 mode When TE10 mode is entered, it enters the wide rectangular waveguide section connected by the coupling hole 7. Since this section is a rectangular waveguide with a width approximately twice that of one rectangular waveguide 5, the TE10 mode and TE20 mode are excited. Since the electric fields of these two modes are distributed so that they are added on the terminal P1 side and canceled on the terminal P4 side, the power escaping to the terminal P4 side is very small.
- the TE10 mode and TE20 mode transmit through the wide rectangular waveguide section described above, but at this time, interference occurs due to the difference in phase velocity.
- This circuit will operate as a waveguide directional coupler, and the electromagnetic waves output from terminals P2 and P3 of both waveguides 5 and 6 have the same phase difference of approximately 90 ° over a wide band. It becomes electric power.
- the rectangular waveguide 5 is provided with a capacitive diaphragm at a position beyond the coupling hole 7, so that the electromagnetic wave generates a delayed phase of 45 ° at the terminal P2.
- the electromagnetic wave since the rectangular waveguide 6 is provided with an inductive stop beyond the coupling hole 7, the electromagnetic wave has a 45 ° advance phase at the terminal P3. This phase is algebraically coupled with the 90 ° phase produced by the coupling hole 7 to produce a 45 ° phase at terminal P3, which is equal to the 45 ° phase at terminal P2. Therefore, the electromagnetic waves output from the terminal P2 and the terminal P3 are in phase with each other.
- the conventional waveguide power distributor can output the electromagnetic wave input from the terminal P1 over a wide frequency range from the terminals P2 and P3 with a desired distribution amplitude ratio, and has good reflection. Characteristics, excellent low loss and high !, and isolation characteristics can be obtained at the same time, and power can be distributed in the same phase over a wide band, making it a high performance used in the microwave and millimeter wave bands. Suitable as a power combiner / distributor.
- the force-capacitive diaphragm configured as described above has a structure in which a plurality of elements are projected on the wide surface of one waveguide.
- the inductive stop has a structure in which a plurality of elements protrude from the narrow surface of the other waveguide. All of these structures are complicated, and the difficulty of processing and the processing cost increase in the production of the waveguide.
- the cross-section of the waveguide is small in the feed circuit section of the millimeter-wave band array antenna device, it is likely to be affected by performance due to processing errors of these diaphragms, and good distribution characteristics are obtained in the desired band of use. There were problems such as making it difficult.
- the present invention has been made to solve the above-described problems, and is an in-phase distribution type, an anti-phase distribution type, or an arbitrary phase distribution type that can reduce characteristic deterioration due to a processing error.
- An object of the present invention is to obtain a power combining / distributing device.
- Another object of the present invention is to obtain a power combiner using the configuration of the power combiner / distributor.
- the present invention utilizes the characteristics of the power combiner / distributor, and has a wider bandwidth, higher performance, It is an object of the present invention to obtain a monopulse signal synthesis circuit, an array antenna apparatus, and a beam forming circuit that enable small size and low cost.
- Patent Document 1 Japanese Patent No. 2592476
- the power distribution device is a power distribution device that distributes and outputs two input electromagnetic waves to two output terminals with a predetermined amplitude and a predetermined phase.
- a waveguide power divider that divides into two by the phase difference, and a waveguide delay line that is loaded on at least one or both of the output sides of the waveguide power divider and adjusts the phase of the output electromagnetic wave that appears on the output side.
- the waveguide power divider is loaded on both output sides and includes a pair of waveguides having different cutoff frequencies for the output electromagnetic wave.
- FIG. 1 is a block diagram showing a circuit configuration of a power distribution device according to Embodiment 1 of the present invention.
- FIG. 2 is an explanatory diagram showing distribution phase characteristics of the power distribution apparatus according to Embodiment 1 of the present invention.
- FIG. 3 is a three-side view of a power distribution device according to Embodiment 2 of the present invention.
- FIG. 4 is a three-side view of a power distribution device according to Embodiment 3 of the present invention.
- FIG. 5 is a three-side view of a power distribution device according to Embodiment 4 of the present invention.
- FIG. 6 is a three-side view of a power distribution device according to Embodiment 5 of the present invention.
- FIG. 7 is a three-side view of a power distribution device according to Embodiment 6 of the present invention.
- FIG. 8 is a three-side view of a power distribution device according to Embodiment 7 of the present invention.
- FIG. 9 is a trihedral view of a power distribution device according to embodiment 8 of the present invention.
- FIG. 10 is a block diagram showing a configuration of a monopulse signal synthesizer according to Embodiment 9 of the present invention.
- FIG. 11 is a block diagram showing a configuration of an array antenna apparatus according to Embodiment 10 of the present invention.
- FIG. 12 is a block diagram showing a configuration of a beam forming circuit according to an eleventh embodiment of the present invention.
- FIG. 1 is a block diagram showing a circuit configuration of a power distribution device according to Embodiment 1 of the present invention
- FIG. 2 is an explanatory diagram showing distribution phase characteristics of the power distribution device.
- the power distribution device described here shows a configuration that can be used for any of the in-phase distribution type, the anti-phase distribution type, and the arbitrary phase distribution type.
- the power distribution apparatus includes a waveguide power distributor 1, a waveguide delay line 2, and a pair of waveguides 3 and 4 having different cutoff frequencies.
- the waveguide power divider 1 has a terminal P1 as an input terminal and terminals P2, P3, and P4 as output terminals, and an electromagnetic wave input from the terminal P1 is transmitted to terminals P2 and P3 with a desired amplitude. Ratio, phase difference ⁇ degree
- the other end of the waveguide 3 is guided to P5 via the waveguide delay line 2, and the other end of the waveguide 4 having a cutoff frequency different from that of the waveguide 3 forms an output terminal P6.
- the function is the same even if the waveguide delay line 2 is installed in front of the waveguide 3.
- this electromagnetic wave is output with power (amplitude) equal to terminals P2 and P3 by waveguide power divider 1 and output to terminal P3. Is delayed by ⁇ degrees from the electromagnetic wave output to terminal P2.
- Waveguides 3 and 4 with different cutoff frequencies are loaded into terminal P3, and the above phase characteristics are canceled by using the difference in frequency characteristics of the passing phase of each waveguide.
- the cutoff frequencies of the waveguides 3 and 4 are designed to satisfy the following equation.
- the guide wavelength ⁇ at a certain frequency f uses the cutoff wavelength ⁇ and the free space wavelength ⁇ .
- ⁇ is the phase difference due to the waveguide delay line 2
- ⁇ is the frequency used by the waveguide delay line 2.
- Waveguide wavelength at the center frequency of several bands, ⁇ is the frequency band of the waveguide delay line 2
- gH is the in-tube wavelength at the upper frequency limit of the used frequency band of the waveguide delay line 2
- ⁇ ' is the phase difference due to the waveguide 3
- ⁇ ' is the used frequency of the waveguide 3.
- ⁇ ' is the lower limit of the frequency band used for waveguide 3
- ⁇ ' is the tube at the upper frequency limit of the frequency band used for waveguide 3
- ⁇ is the tube at the lower frequency limit of the frequency band used for waveguide 4
- the inner wavelength, ⁇ ′′ is the inner wavelength at the upper limit frequency of the operating frequency band of the waveguide 4.
- the waveguides 3 and 4 having different cut-off frequencies can be used to pass through these waveguides using the difference in frequency characteristics of the guide wavelengths. 2 due to the frequency of the phase difference as shown by the dotted line d2 in FIG. 2 and the change due to the frequency of the phase difference as shown by the broken line dl in FIG. it can . That is, the phase difference caused by the waveguide delay line 2 is reduced, and as shown by the solid line d3 in FIG.
- the phase difference of the electromagnetic waves output from terminals P5 and P6 in the region near both ends of the used frequency band is ( ⁇ - ⁇ ) degrees.
- the phase difference can be set arbitrarily depending on how the ⁇ degree is selected.
- the power distribution device can be in-phase distribution type, anti-phase distribution type, or arbitrary phase distribution type.
- the waveguides 3 and 4 having different cut-off frequencies are not limited to the forces shown in the structural examples in Embodiment 2 to Embodiment 8 below.
- the waveguide delay line for phase adjustment is provided only on one side of the output side of the waveguide power divider 1 .
- the waveguide delay line is provided on both sides. Even when installed, the same effect can be obtained by applying a pair of waveguides having different cutoff frequencies.
- the input power electromagnetic wave is divided into two by the waveguide power distributor 1 with the desired amplitude ratio and phase difference, and the terminal P2 And P3, and the waveguide delay line 2 is loaded on at least one terminal P2, and the phase of the output electromagnetic wave is delayed by a predetermined amount, that is, the phase is adjusted, and the output terminals 5 and 6 of the power distribution device
- a pair of waveguides 3 and 4 having different cutoff frequencies for both output electromagnetic waves is provided on the terminals P2 and P3 side of the waveguide power divider 1. It is configured to be loaded.
- the electromagnetic wave input from the terminal P1 has a desired distribution amplitude ratio and an arbitrary phase difference from the terminals P5 and P6 over a wide frequency band in which the phase characteristics do not deteriorate at both ends of the used frequency band. The effect of being able to output is obtained.
- this power distribution device can be configured as a power combiner. That is, in this case, signals having a predetermined phase relationship in terms of application are input from terminals 5 and 6, respectively, and synthesized power is obtained from terminal P1.
- the fact that it can be used as a power combiner is the same in the following embodiments.
- the waveguide power divider 1 in FIG. 1 may be read as a waveguide power combiner.
- FIG. 3 is a three-plane view showing the configuration of the power distribution device according to Embodiment 2 of the present invention, where (a) is a plan view, (b) is a left-side view, and (c) is a cross-sectional view taken along line E1-E1.
- the second embodiment shows a specific example of a waveguide structure in which the power distribution device described in the first embodiment is partially changed. One of them is the waveguide directionality as waveguide power divider 1 in Fig. 1. A coupler is applied. In this waveguide directional coupler, two rectangular waveguides having the same cross section are arranged so that their tube axes are parallel to each other, and one rectangular waveguide has first and second terminals.
- the other rectangular waveguide has third and fourth terminals, and when the signal is input from the first terminal, the second and third terminal force signals are output, but the fourth terminal Has a coupling structure between both waveguides so that no signal is output.
- the power distribution device described here relates to an in-phase power distribution device.
- a waveguide directional coupler 9 composed of rectangular waveguides 5 and 6, a coupling hole 7 and a matching element 8 is used as the waveguide power divider 1 in FIG.
- the rectangular waveguides 5 and 6 are arranged so that the mutually narrow surfaces having the same opening diameter face each other and the tube axes thereof are parallel to each other.
- a coupling hole 7 provided as a coupling structure between the two waveguides connects a predetermined section of the opposing faces of the rectangular waveguides 5 and 6, and the coupling hole 7 has a circular shape.
- a columnar matching element 8 is provided. This type of waveguide directional coupler 9 is generally called a short slot type.
- a rectangular waveguide 10 used in place of the waveguide 3 in FIG. 1 is connected to the rectangular waveguide 5 of the waveguide directional coupler 9 and has a structure that is narrower than the rectangular waveguide 5.
- the tube axis length is about 1Z2 of the tube wavelength.
- a rectangular waveguide 11 used instead of the waveguide 4 in FIG. 1 is connected to the rectangular waveguide 6 of the waveguide directional coupler 9 and is wider than the rectangular waveguide 6. It has a shape and the tube axis length is about 1Z2 of the tube wavelength.
- a rectangular waveguide 13 having the same opening diameter as that of the rectangular waveguide 6 is connected to an output side of the rectangular waveguide 11 (that is, an end different from the waveguide directional coupler 9 side).
- a rectangular waveguide 12 is used as the waveguide delay line 2 in FIG.
- This rectangular waveguide 12 is connected to the rectangular waveguide 10 and has the same opening diameter as that of the rectangular waveguide 5 and has a tube wavelength at the center frequency of the operating frequency band from the tube axial length of the rectangular waveguide 13. It has a structure that is 1Z4, that is, a passage phase longer by 90 degrees.
- P1 to P4 are input / output terminals of the waveguide directional coupler 9
- P5 and P6 are output terminals of the rectangular waveguides 12 and 13.
- an electromagnetic wave in a certain frequency band is input from terminal P1 as a rectangular waveguide fundamental mode (rectangular waveguide TE10 mode).
- This electromagnetic wave propagates through the rectangular waveguide 5 and enters a wide rectangular waveguide section connected to the rectangular waveguide 6 by the coupling hole 7. Since this section is a rectangular waveguide with a width approximately twice that of the rectangular waveguide 5, the TE10 mode and TE20 mode, which are the fundamental modes of the rectangular waveguide, are excited.
- the electric fields of these two modes are distributed so as to be added on the terminal P1 side and canceled on the terminal P4 side, the electric power escaping to the terminal P4 side is very small.
- the TE10 mode and TE20 mode transmit through a wide rectangular waveguide section including the coupling hole 7 described above.
- the difference in phase velocity also causes mutual interference.
- the two modes have a 90-degree phase difference.
- equal power (amplitude) is transmitted to terminals P2 and P3, and this circuit operates as a waveguide directional coupler.
- a cylindrical matching element 8 is provided in the coupling hole 7 as shown in the figure.
- the electromagnetic waves output from the terminals P2 and P3 of the waveguide directional coupler 9 have a phase difference of approximately 90 degrees over a wide band.
- the rectangular waveguide 12, which is a waveguide delay line has a tube axis length of 1Z4 of the tube wavelength at the center frequency of the operating frequency band from the tube axis length of the rectangular waveguide 13, that is, the passing phase 90 Since it is made longer, the phase of the electromagnetic wave output from terminals P5 and P6 can be made in phase.
- the phase difference caused by the difference between the tube axis lengths of the rectangular waveguide 12 and the rectangular waveguide 13 is affected by the frequency characteristics of the in-tube wavelength of the waveguide, and in the region near both ends of the operating frequency band.
- the tube axis length of the rectangular waveguides 10 and 11 is about 1Z2 of the wavelength in each tube at the center frequency of the used frequency band, so that two waveguide width steps can be achieved by connecting waveguides with different widths. The reflection characteristics that occur are counteracted to prevent deterioration of the reflection characteristics!
- waveguide 5 is the first and The second terminal PI, P2
- the other rectangular waveguide 6 has the third and fourth terminals P3, P4, and the second and third terminals when a signal is input from the first terminal P1.
- a waveguide directional coupler having a coupling structure 7 between the two waveguides is used as the waveguide.
- Wave tube 10 and second rectangular waveguide loaded on the third terminal P3 side having a wider cross section than the other rectangular waveguide 6 and having a tube axis length of about 1Z2 of the tube wavelength 11 and 11 constitute a waveguide pair.
- a waveguide delay line 12 composed of a rectangular waveguide loaded on the second terminal P2 side and having the same opening diameter as one of the rectangular waveguides 5 is loaded on the third terminal P3 side.
- the third rectangular waveguide 13 has the same opening diameter as that of the other rectangular waveguide 6 and has a tube axis length shorter than the waveguide delay line 12 by about 1Z4 of the in-tube wavelength. Therefore, the electromagnetic wave input to the terminal P1 can be output from the terminals P5 and P6 in the desired distribution amplitude ratio and in the same phase over a wide frequency band, and has good reflection characteristics and excellent low loss. Performance, high! And isolation characteristics can be obtained at the same time. Note that the same effect can be obtained by changing the width of one of the pair of the rectangular waveguide 10 or the rectangular waveguide 11. In addition, the structure is simplified, so that the cost can be reduced or the characteristic deterioration due to the processing error can be reduced.
- FIG. 4 is a three-side view showing the configuration of the power distribution device according to Embodiment 3 of the present invention, where (a) is a plan view, (b) is a left side view, and (c) is a cross-sectional view taken along line E2-E2. .
- the same parts as those in FIG. 3 of the second embodiment are given the same reference numerals, and the description thereof will be omitted in principle.
- the third embodiment shows a specific example of a waveguide structure in which the power distribution device described in the second embodiment is partially changed.
- the power distribution device described here relates to an in-phase power distribution device.
- a ridge waveguide 15 is used instead of the rectangular waveguide 10 of FIG.
- the ridge waveguide 15 is connected to the rectangular waveguide 5 and has a cross section having the same width as the rectangular waveguide 5 and has an upper wide surface or a protrusion 151 extending inward from the upper wide surface. ing .
- the protrusion 151 may be provided on both the upper wide surface and the lower wide surface.
- a rectangular waveguide 14 is used in place of the rectangular waveguide 11 shown in FIG. This rectangular waveguide 14 has the same width as that of the rectangular waveguide 6 and is connected to the rectangular waveguide 6.
- the electromagnetic waves output from the terminals P2 and P3 of the waveguide directional coupler 9 have a phase difference of approximately 90 degrees over a wide band.
- the rectangular waveguide 12 which is a waveguide delay line, has a tube axis length of 1Z4 of the tube wavelength at the center frequency of the operating frequency band from the tube axis length of the rectangular waveguide 13, that is, the passing phase 90 Since it is made longer, the phase of the electromagnetic wave output from terminals P5 and P6 is the same.
- the phase difference caused by the difference between the tube axis lengths of the rectangular waveguide 12 and the rectangular waveguide 13 is affected by the frequency characteristics of the in-tube wavelength of the waveguide. Deviate from the degree.
- a ridge waveguide 15 having a cross section of the same width as the rectangular waveguide 5 on the terminal P2 side and having an upper wide surface and a protrusion 151 extending toward the inside of the Z or lower wide surface force is loaded,
- a rectangular waveguide 14 having the same cross section as the rectangular waveguide 6 is loaded on the terminal P3 side, and a pair of waveguides having different cutoff frequencies is formed. This phase characteristic is canceled by utilizing the difference in frequency characteristic of the passing phase in each waveguide of the pair of waveguides.
- the pair of waveguides having different cutoff frequencies applied to the power distribution device of the third embodiment is the same as that of the waveguides 10 and 11 shown in the second embodiment. Instead of a pair, it is loaded on the second terminal P2 side of the waveguide directional coupler 9, has the same width as one of the rectangular waveguides 5, and has an upper wide surface and a Z or lower wide surface.
- the fourth rectangular waveguide 14 is loaded and has the same cross section as the other rectangular waveguide 6.
- the electromagnetic wave input to the terminal P1 can be output from the terminals P5 and P6 in a desired distribution amplitude ratio and in the same phase over a wide frequency band, and good.
- the effect of obtaining reflection characteristics, excellent low-loss characteristics, and high isolation characteristics at the same time is obtained.
- the structure is simplified, low cost can be achieved, or characteristic deterioration due to processing errors can be reduced.
- each of the power distribution devices Since it is not necessary to partially increase the width of the waveguide, there is no problem of interference between adjacent waveguides, and the effect of miniaturization can be obtained.
- Fig. 5 is a three-sided view showing the configuration of the power combiner / distributor according to Embodiment 4 of the present invention.
- (A) is a plan view
- (b) is a left side view
- (c) is a cross-sectional view taken along line E3-E3. is there.
- the same parts as those in FIG. 3 of the second embodiment are denoted by the same reference numerals, and the description thereof will be omitted in principle.
- the fourth embodiment shows a specific example of a waveguide structure in which the power distribution device described in the second embodiment is partially changed.
- the power distribution apparatus described here relates to an in-phase distribution type power distribution apparatus.
- a ridge waveguide 16 is used instead of the rectangular waveguide 10 of FIG.
- the ridge waveguide 16 is connected to the rectangular waveguide 5, has a cross section having the same width as the rectangular waveguide 5, and has a protrusion 161 on the upper side surface or the upper side surface.
- a ridge waveguide 17 is used instead of the rectangular waveguide 11 shown in FIG.
- the ridge waveguide 17 is connected to the rectangular waveguide 6, has the same width as the rectangular waveguide 6, and has a protrusion 161 of the ridge waveguide 16 on the upper side wide surface or the upper wide surface.
- Has protrusions 171 having different lengths.
- both or one of the ridge waveguides 16 and 17 may have protrusions on both the upper wide surface and the lower wide surface.
- the electromagnetic waves output from the terminals P2 and P3 of the waveguide directional coupler 9 have a phase difference of approximately 90 degrees over a wide band.
- the rectangular waveguide 12 has a tube axis length that is longer than the tube axis length of the rectangular waveguide 13 by 1Z4 of the tube wavelength at the center frequency of the operating frequency band, that is, by a passing phase of 90 degrees.
- the phases of the electromagnetic waves output from terminals P5 and P6 can be made in-phase.
- the phase difference caused by the difference between the tube axis lengths of the rectangular waveguide 12 and the rectangular waveguide 13 is affected by the frequency characteristics of the in-tube wavelength of the waveguide. Deviate from the degree.
- the ridge waveguide 16 having the protrusion 161 on the terminal P2 side is loaded, and the ridge waveguide 17 having the protrusion 171 having a different length from the protrusion 161 of the ridge waveguide 16 is loaded.
- a pair of waveguides having different cutoff frequencies is formed. This phase characteristic is canceled out by utilizing the difference in frequency characteristic of the passing phase in each waveguide constituting the waveguide pair.
- the pair of waveguides having different cutoff frequencies applied to the power distribution apparatus of the fourth embodiment is the pair of the waveguides 10 and 11 of the second embodiment.
- the waveguide directional coupler 9 is loaded on the second terminal P2 side of the waveguide directional coupler 9, has the same width as the one of the rectangular waveguides 5 of the waveguide directional coupler 9, and has an upper wide surface.
- a ridge waveguide 16 having a protrusion 161 extending inward from the Z or lower wide surface, and the third terminal P3 side of the waveguide directional coupler 9 are loaded on the waveguide directional coupler 9
- a projection 171 having the same width as that of the other rectangular waveguide 6 and extending inward from the upper wide surface and the Z or lower wide surface is different in length from the projection 161 of the ridge waveguide 16.
- a ridge waveguide 17 having the same.
- the electromagnetic wave input to the terminal P1 can be output in a desired distribution amplitude ratio and in-phase from the terminals P5 and P6 over a wide frequency band.
- the structure is simple, low cost can be achieved, or characteristic deterioration due to processing errors can be reduced.
- it is not necessary to partially increase the width of each waveguide constituting the power distribution device the problem of interference between adjacent waveguides does not occur, and a small size can be achieved.
- the ridge waveguides 16 and 17 are loaded on both of the two output terminals, there are a plurality of adjustment points, and the effect of increasing the degree of freedom in design can be obtained.
- FIG. 6 is a three-side view showing the configuration of the power distribution device according to Embodiment 5 of the present invention, where (a) is a plan view, (b) is a left side view, and (c) is a cross-sectional view taken along line E4-E4. .
- the fifth embodiment shows a specific example of a waveguide structure in which the power distribution device described in the second embodiment is partially changed.
- the power distribution device described here relates to an in-phase power distribution device.
- a dielectric waveguide 18 is used in place of the rectangular waveguide 10 of FIG.
- the dielectric waveguide 18 is connected to the rectangular waveguide 5, has a cross section having the same width as the rectangular waveguide 5, and is filled with a dielectric 181.
- a dielectric waveguide 19 is used instead of the rectangular waveguide 11 shown in FIG.
- Dielectric waveguide 19 is connected to rectangular waveguide 6 Filled with dielectric 191 with a different dielectric constant from dielectric 181 that is connected and has the same width cross section as rectangular waveguide 6 and filled into dielectric waveguide 18 inside the waveguide! /
- the electromagnetic waves output from the terminals P2 and P3 of the waveguide directional coupler 9 have a phase difference of approximately 90 degrees over a wide band.
- the rectangular waveguide 12 has a tube axis length that is longer than the tube axis length of the rectangular waveguide 13 by 1Z4 of the tube wavelength at the center frequency of the operating frequency band, that is, by a passing phase of 90 degrees.
- the phases of the electromagnetic waves output from terminals P5 and P6 can be made in-phase.
- the phase difference caused by the difference between the tube axis lengths of the rectangular waveguide 12 and the rectangular waveguide 13 is affected by the frequency characteristics of the in-tube wavelength of the waveguide, and in the region near both ends of the frequency band used, 90%. Deviate from the degree.
- the dielectric waveguide 18 in which the entire interior is filled with the dielectric 181 is loaded on the terminal P2 side, and the entire interior is filled with the dielectric 191 having a dielectric constant different from that of the dielectric 181.
- 19 are loaded to form a pair of waveguides having mutually different cutoff frequencies. This phase characteristic is canceled by utilizing the difference in frequency characteristic of the passing phase in each waveguide constituting the pair of waveguides.
- the pair of waveguides having different cutoff frequencies applied to the power distribution device of the fifth embodiment is the pair of the waveguides 10 and 11 of the second embodiment. Instead, it is loaded on the second terminal P2 side of the waveguide directional coupler 9, and has the same width as one of the rectangular waveguides 5 of the waveguide directional coupler 9, and the entire inside
- the dielectric waveguide 18 filled with the dielectric 181 and the third terminal P3 side of the waveguide directional coupler 9 are loaded, and the other rectangular waveguide of the waveguide directional coupler 9 is loaded.
- the guide wavelength can be shortened by loading the dielectric, the length of the dielectric waveguides 18 and 19 can be shortened.
- FIG. 7 is a three-plane view showing the configuration of the power distribution device according to Embodiment 6 of the present invention, where (a) is a plan view, (b) is a left side view, and (c) is a cross-sectional view taken along line E5-E5. .
- the sixth embodiment shows a specific example of a waveguide structure in which the power distribution device described in the second embodiment is partially changed.
- the power distribution device described here relates to an in-phase power distribution device.
- a dielectric waveguide 20 is used in place of the rectangular waveguide 10 of FIG.
- the dielectric waveguide 20 is connected to the rectangular waveguide 5, has a cross section having the same width as the rectangular waveguide 5, and a part of the cross-sectional area of the waveguide is filled with the dielectric 201.
- a dielectric wave tube 21 is used in place of the rectangular waveguide 11 shown in FIG. This dielectric waveguide 21 is connected to the rectangular waveguide 6 and has the same width as that of the rectangular waveguide 6 and is part of the cross-sectional area of the waveguide.
- a dielectric 211 having a cross-sectional area different from that of the filled dielectric 201 is filled.
- the electromagnetic waves output from the terminals P2 and P3 of the waveguide directional coupler 9 have a phase difference of approximately 90 degrees over a wide band.
- the rectangular waveguide 12 has a tube axis length that is longer than the tube axis length of the rectangular waveguide 13 by 1Z4 of the tube wavelength at the center frequency of the operating frequency band, that is, by a passing phase of 90 degrees.
- the phases of the electromagnetic waves output from terminals P5 and P6 can be made in-phase.
- the phase difference caused by the difference between the tube axis lengths of the rectangular waveguide 12 and the rectangular waveguide 13 is affected by the frequency characteristics of the in-tube wavelength of the waveguide. Deviate from the degree.
- the dielectric waveguide 20 filled with the dielectric 201 is partially loaded on the terminal P2 side, and a section different from the dielectric 201 is loaded on a part of the cross-sectional area of the waveguide.
- a dielectric waveguide 21 filled with a dielectric 211 having an area is loaded to form a pair of waveguides having different cutoff frequencies. This phase characteristic is canceled by using the difference in frequency characteristics of the passing phase in each waveguide of this waveguide pair.
- the pair of waveguides having different cutoff frequencies applied to the power distribution apparatus of the sixth embodiment is the pair of the waveguides 10 and 11 of the second embodiment.
- the dielectric waveguide 21 is made up of.
- the electromagnetic wave input to the terminal P1 can be output from the terminals P5 and P6 with a desired distribution amplitude ratio and in phase over a wide frequency band, and good. It is possible to obtain an advantageous effect that it is possible to simultaneously obtain excellent reflection characteristics, excellent low loss characteristics, and high isolation characteristics.
- the structure is simple, low cost can be achieved or characteristic deterioration due to processing errors can be reduced.
- it is not necessary to partially widen the widths of the respective waveguides constituting the power distribution device the problem of interference between adjacent waveguides does not occur, and a small size can be achieved.
- an effect can be obtained by simply changing the dimensions of the dielectric material to be filled.
- FIG. 8 is a three-side view showing the configuration of the power combiner / distributor according to Embodiment 7 of the present invention.
- (A) is a plan view
- (b) is a left side view
- (c) is a cross-sectional view taken along line E6-E6. is there.
- the seventh embodiment shows a power distribution device using a waveguide directional coupler having a structure different from that of the waveguide directional coupler described in the second to sixth embodiments. is there.
- the power distribution apparatus described here relates to an in-phase distribution type power distribution apparatus.
- a waveguide directional coupler 25 is used in place of the waveguide directional coupler 9 of FIG.
- the waveguide directional couplers 25 are arranged so that their wide surfaces with the same opening diameter face each other! /, And so that their tube axes are parallel to each other.
- the wave tubes 22 and 23 are composed of a plurality of rectangular branching waveguides 24 connecting the opposing surfaces of the rectangular waveguides 22 and 23 and having a tube axis length of about 1Z4 of the wavelength inside the tube.
- This type of waveguide directional coupler is generally called a branch guide (line) type waveguide directional coupler, which is the same as the short slot type shown in Embodiment 2 to Embodiment 6 above. It has the same function.
- the rectangular waveguide 10 constituting the waveguide pair used here has a narrower vertical width (horizontal width in FIG. 3) than the rectangular waveguide 22, and the other rectangular waveguide. 11 is wider than the rectangular waveguide 23 in the vertical width (in FIG. 3, the vertical width).
- the electromagnetic waves output from the terminals P2 and P3 of the waveguide directional coupler 25 have a phase difference of approximately 90 degrees over a wide band.
- the rectangular waveguide 12 has a tube axis length longer than that of the rectangular waveguide tube 13 by 1Z4, that is, a passing phase of 90 degrees, at the center frequency of the used frequency band. Therefore, the phase of the electromagnetic wave output from terminals P5 and P6 can be made in-phase.
- the phase difference caused by the difference between the tube axis lengths of the rectangular waveguide 12 and the rectangular waveguide 13 is affected by the frequency characteristics of the in-tube wavelength of the waveguide, and in the region near both ends of the used frequency band. Deviation from 90 degrees. Therefore, as described in the second embodiment (Fig.
- the rectangular waveguide 10 narrower than the rectangular waveguide 5 is loaded on the terminal P2 side, and the rectangular waveguide 6 is wider on the terminal P3 side.
- a wide rectangular waveguide 11 is loaded to form a pair of waveguides having different cutoff frequencies. This phase characteristic is canceled by utilizing the difference in frequency characteristics of the passing phase in each waveguide constituting the pair of waveguides.
- the waveguide power distributors are arranged so that the wide surfaces having the same opening diameter face each other, and
- the rectangular waveguides 22 and 23 arranged so that their tube axes are parallel to each other are connected to the opposing faces of these rectangular waveguides 22 and 23, and the tube axis length of the tube wavelength is about 1Z4.
- a rectangular branch waveguide 24 having one terminal P1 of the rectangular waveguide 22 as an electromagnetic wave input terminal, and the other terminal P2 of the rectangular waveguide 22 and the rectangular waveguide 23.
- a waveguide directional coupler with both terminals P3 and P4 as output terminals is used.
- electromagnetic waves input to terminal P1 are transmitted from terminals P5 and P6 over a wide frequency band. It is possible to output in the desired distribution amplitude ratio and in the same phase, and to obtain good reflection characteristics, excellent low loss characteristics, and high isolation characteristics at the same time.
- this power combiner / distributor divides the entire circuit vertically into two at the center of the wide surface of each waveguide, as shown by the broken line e in FIG. Therefore, it is possible to easily obtain a power combining / distributing device with very low loss by excavation processing or the like.
- the waveguide directional coupler described here has the same effect as that of the waveguide pair shown in Embodiment 3 to Embodiment 6 even if a displacement force is loaded. be able to.
- FIG. 9 is a three-plane view showing the configuration of the power distribution device according to Embodiment 8 of the present invention, where (a) is a plan view, (b) is a left-side view, and (c) is a cross-sectional view taken along line E7-E7. is there.
- the same parts as those in FIG. 3 of the second embodiment are given the same reference numerals, and the description thereof will be omitted in principle.
- the eighth embodiment shows a specific example of the waveguide structure of the power distribution device described in the first embodiment.
- the power distribution device described here relates to an anti-phase distribution type power distribution device.
- the same waveguide directional coupler 9 as in Embodiment 2 to Embodiment 6 is used here, but the rectangular waveguide 26 and the rectangular waveguide 5 are connected to the terminal P2 side of the rectangular waveguide 5.
- Waveguides 28 are loaded in series.
- the rectangular waveguide 26 has a wider cross section than the rectangular waveguide 5, and the rectangular waveguide 28 has a cross section having the same width as the rectangular waveguide 5.
- a rectangular waveguide 27 and a rectangular waveguide 29 as a waveguide delay line are loaded in series on the terminal P3 side of the rectangular waveguide 6.
- the rectangular waveguide 27 has a narrower cross section than the rectangular waveguide 6, and the rectangular waveguide 29 has a same cross section as the rectangular waveguide 6.
- the rectangular waveguides 26 and 27 form a pair of waveguides having different cutoff frequencies and having an in-tube wavelength of about 1Z2.
- the waveguide 29, which is a rectangular waveguide delay line has a tube axis length that is only 1Z4 of the tube wavelength at the center frequency of the used frequency band from the tube axis length of the rectangular waveguide 28, that is, a passing phase of 90 °. It is set long. As a result, it is possible to operate as an anti-phase power distribution device in which the phase difference between the electromagnetic waves output from the terminals P5 and P6 over a wide band is 180 degrees.
- the waveguide power distributor is Two rectangular waveguides with equal cross-sections are arranged so that their tube axes are parallel to each other.
- One rectangular waveguide 5 has first and second terminals PI and P2, and the other rectangular shape.
- Waveguide 6 has third and fourth terminals P3 and P4. When a signal is input from first terminal P1, a signal is output from second and third terminals P2 and P3.
- a waveguide directional coupler having a coupling structure 7 between the two waveguides is used so that no signal is output from the terminal P4 of 4, and the pair of waveguides having mutually different cutoff frequencies is
- the first rectangular waveguide 26 loaded on the terminal P2 side, having a cross section wider than one of the rectangular waveguides 9 and having a tube axis length of about 1Z2 of the tube wavelength, and a third terminal P3
- the second rectangular waveguide 27 is loaded on the side, has a cross section narrower than the other rectangular waveguide 6, and has a tube axis length of about 1Z2 of the guide wavelength.
- a third rectangular waveguide is loaded on the second terminal P2 side and has the same cross section as one of the rectangular waveguides 5, and the waveguide delay line 29 is loaded on the terminal P3 side.
- the cross-section has the same width as the other rectangular waveguide 6 and the tube axis length is set longer than the tube axis length of the third rectangular waveguide 28 by 1Z4 of the in-tube wavelength at the center frequency of the operating frequency band. It consists of a rectangular waveguide. Therefore, the electromagnetic wave input to the terminal P1 can be output from the output terminals P5 and P6 with a desired distribution amplitude ratio in the opposite phase over a wide frequency band, and also has good reflection characteristics and excellent low frequency.
- the waveguide directional coupler described here may be loaded with any of the deviations in the waveguide pair shown in Embodiments 3 to 6, and the same effect can be obtained. Can play.
- FIG. 10 is a block diagram showing a schematic configuration of a monopulse signal synthesis circuit according to Embodiment 9 of the present invention.
- the monopulse signal synthesis circuit is shown as an example applied to multiple received radio waves obtained from an antenna such as a radar, but it can also be applied to other applications. It is.
- the antenna 41 has divisions A, B, C, D in which the opening is divided into four quadrants, and output terminals Pl1, P12, P13, P14.
- This is a delay line for adding a predetermined phase difference to each signal from the antenna 41 from which the power of the output lines Pl, P12, P13 and P14 can be obtained.
- Waveguides 37, 38, 39, 40 have different cut-off frequencies and delay lines 34, 3 This is a means for canceling the frequency characteristics of the passing phase generated at 5 and 36.
- 90 ° hybrid 30, 31, 32, 33 is an output terminal (monopulse) that distributes and synthesizes each signal of 41 antennas through a waveguide 37, 38, 39, 40 with a predetermined amplitude and phase ratio. (Signal terminal) This constitutes a monopulse signal synthesis circuit that outputs total and differential signals from P7, P8, P9, and P10.
- Incoming high-frequency signals are received in each of the divisions AD divided into the four quadrants of the antenna 41.
- 90 ° hybrid 30 is the sum signal (A + B) of received signals A and B and Form the difference signal (AB).
- 90 ° node 31 forms the sum signal (C + D) and difference signal (C – D) of the received signals C and D.
- the 90 ° and hybrid 32 are derived from the sum signal (A + B) formed by the 90 ° hybrid 30 and the sum signal (C + D) formed by the 90 ° hybrid 31.
- the 90 ° hybrid 32 adds the difference signal of the sum signal (A +) and sum signal (figure + 0) to the output terminal P8, that is, the received signal of each segment AD of the antenna 41 for each vertical direction. Then, the ⁇ Az signal [(A + B)-(C + D)] that is the difference is generated and output to the output terminal P8.
- the other 90 ° hybrid 33 is based on the difference signal (A-B) formed by 90 ° hybrid 30 and the difference signal (CD) formed by 90 ° hybrid 31.
- the 90 ° hybrid 33 generates the sum signal [(A ⁇ B) + (C D)] and outputs it to the output terminal P10.
- the circuit of FIG. 10 operates as a monopulse signal synthesis circuit.
- the output terminal P10 is normally not used! /, And is a dummy terminal.
- the phase difference between the delay lines 34, 35, and 36 is 90 °, 90 °, and 180 °.
- Delay line It is necessary to make a difference in the tube axis length at the input terminal portion. For this reason, the phase characteristics of the synthesized monopulse signal deteriorate at both ends of the operating frequency band due to the influence of the frequency characteristics of the in-tube wavelength of the waveguide. Therefore, the delay line 35, the waveguides 37 and 40, the 90 ° node, and the hybrid 30 are configured by the antiphase power distribution device described in the eighth embodiment. In FIG.
- the reference numerals in parentheses shown corresponding to the reference numerals of the respective parts indicate the reference numerals of the respective parts in FIG. 9 (Embodiment 8).
- the circuits of the delay lines 34 and 35, the waveguides 38 and 39, and the 90 ° noble bridge 31 have the same configuration.
- the waveguides 37 and 40 and the waveguides 38 and 39 the pair of waveguides having different cutoff frequencies described in the second embodiment to the seventh embodiment may be appropriately applied.
- the waveguide directional couplers 9, 25 described in the above embodiments are used. By loading a pair of waveguides having different cutoff frequencies in this way, the frequency characteristics of the passing phase generated in the delay lines 34, 35, and 36 can be canceled.
- the phase characteristics of the monopulse signal synthesized by the monopulse signal synthesis circuit can be flattened over a wide band.
- the phase is adjusted to the first stage hybrid (37, 40) via the waveguide delay line (35, 34, 36). Inputs multiple signals (A, B and C, D), and distributes and synthesizes the input signals with a predetermined amplitude and phase ratio using multiple hybrids (30, 31, 32, 33) arranged in sequence
- the monopulse signal synthesis circuit that outputs the sum signal of the plurality of signals and a predetermined difference signal from the hybrid (32, 33) at the final stage, the frequency is mutually shared with the input side of the hybrid (30, 31) at the first stage.
- a pair of different waveguides (37, 40 and 38, 39) are loaded. Therefore, it is possible to obtain an effect of flattening the phase characteristic of the synthesized monopulse signal over a wide band without causing the phase characteristic to deteriorate at both ends of the used frequency band.
- FIG. 11 is a block diagram showing a schematic configuration of an array antenna apparatus according to Embodiment 10 of the present invention. Here, the case where the number of element antennas to be fed is set to 8 is illustrated.
- the array antenna apparatus corresponds to a plurality of element antennas 42 arranged in an array, a plurality of amplifiers 43 corresponding to each element antenna 42, and each amplifier 43.
- a plurality of phase shifters 44 and an array antenna feeding circuit 47 that feeds each phase shifter 44 are configured.
- the array antenna power supply circuit 47 includes an input terminal P15 for transmitting radio waves, a plurality of power distribution devices 45 connected in a reverse tournament form with respect to the input, and a plurality of terminators 46.
- any one of the in-phase distribution type power distribution devices proposed in the first embodiment and the seventh embodiment is applied to the power distribution device 45, and the corresponding connection relationship is as follows. This is illustrated by the terminals PI, P4, P5, and P6 written in Figure 11.
- the combination of the phase shifter 44 and the amplifier 43 may be configured as a high frequency module.
- the radio wave is distributed by a plurality of power distribution devices 45 connected and arranged in a reverse tournament shape with respect to the input.
- Each radio wave distributed by each power distribution device at the final stage is phase-shifted and adjusted by the corresponding phase shifter 44, amplified by each amplifier 43, and then given to the corresponding element antenna 42 to be radiated into the atmosphere. Is done.
- the input radio wave is sequentially distributed to a plurality of radio waves by the plurality of power distribution devices 45 connected and arranged in a reverse tournament form, and the final stage
- the electric waves distributed and output at the desired distribution amplitude ratio and in the same phase by the power distribution apparatus are amplified by the respective amplifiers 43 via the corresponding phase shifters 44, and the amplified radio waves are arranged in an array.
- each of the power distribution devices is of the same phase distribution type as described in the second to seventh embodiments. It consists of a power distribution device. Therefore, the radio wave distributed and output to the phase shifter 44 has the effect that the phase of each radio wave whose phase characteristics do not deteriorate at both ends of the used frequency band can be easily made in phase over a wide frequency band. can get.
- FIG. 12 is a block diagram showing a schematic configuration of the beam forming circuit according to the eleventh embodiment of the present invention.
- the beam forming circuit 51 is composed of a waveguide, and electromagnetic waves are input.
- Input terminal P16 multiple waveguides connected in multiple stages in reverse tournament to the input power divider 48a-48g, delay line 49a-49h that gives the desired phase difference to the output signal, these delay lines Waveguides 50a-50h connected to 49a-49h, and output terminals P17a-P17h serving as the other ends of the waveguides 50a-50h are provided.
- the waveguides 50a to 50h have different cutoff frequencies from each other in order to cancel the frequency characteristics of the passing phase generated in the delay lines 49a to 49h.
- the pair of waveguides described in the first embodiment and the eighth embodiment is applied.
- the waveguide directional couplers described in the second to eighth embodiments are used for the waveguide power distributors 48a to 48g.
- the waveguide power distributor 48d, the waveguides 50a and 50b, and the delay lines 49a and 49b are shown in parentheses in FIG. That is, the four circuits composed of the final-stage waveguide power divider 48d-48g, waveguides 50a-50h, and delay lines 49a-49h are not in-phase distribution type!
- electromagnetic waves in a certain frequency band are input from the input terminal P16, they are distributed by the multi-stage connected waveguide power distributors 48a-48g.
- the signal distributed in the final stage 48d-48g is added with a desired phase by delay lines 49a-49h, beam-formed to a desired amplitude and a desired phase distribution of 0 ° — 36 0 °, and output terminal P 17a— Output from P17h.
- the delay lines 49a to 49h add a desired phase difference, so that there is a difference in the tube axis length of the waveguide constituting the delay line. It is necessary to turn on.
- each of the combinational circuits including the power divider (waveguide power divider) 48d-48g and the delay line (waveguide delay line) 49a-49h constituting the final stage is provided.
- the final stage power divider (waveguide power divider) 48d a pair of waveguides composed of waveguides 50a-50h having different cutoff frequencies on the output side of 48g (ie 50a and 50g). 50b, 50c and 50d, 50e and 50f, and 50g and 50h)).
- the power distribution device is an arbitrary phase distribution type power distribution device having the configuration proposed in the seventh embodiment. Therefore, according to the eleventh embodiment, it is possible to cancel the frequency characteristic of the passing phase generated in the delay lines 49a to 49h, and to obtain the effect that the phase characteristic of the output signal of the beam forming circuit can be flattened over a wide band.
- the power distribution device of the present invention can output an input electromagnetic wave with a desired distribution amplitude ratio and an arbitrary phase difference over a wide frequency band. It is effective when applied to various circuits for radar.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006534940A JP4230511B2 (ja) | 2004-09-07 | 2004-09-07 | 電力分配装置、電力合成装置、モノパルス信号合成回路、アレーアンテナ給電回路およびビーム形成回路 |
| PCT/JP2004/012990 WO2006027828A1 (ja) | 2004-09-07 | 2004-09-07 | 電力分配装置、電力合成装置、モノパルス信号合成回路、アレーアンテナ給電回路およびビーム形成回路 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/012990 WO2006027828A1 (ja) | 2004-09-07 | 2004-09-07 | 電力分配装置、電力合成装置、モノパルス信号合成回路、アレーアンテナ給電回路およびビーム形成回路 |
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| Publication Number | Publication Date |
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| WO2006027828A1 true WO2006027828A1 (ja) | 2006-03-16 |
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| PCT/JP2004/012990 Ceased WO2006027828A1 (ja) | 2004-09-07 | 2004-09-07 | 電力分配装置、電力合成装置、モノパルス信号合成回路、アレーアンテナ給電回路およびビーム形成回路 |
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| WO (1) | WO2006027828A1 (ja) |
Cited By (7)
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|---|---|---|---|---|
| JP2009044540A (ja) * | 2007-08-09 | 2009-02-26 | Mitsubishi Electric Corp | 導波管形電力合成分配器およびそれを用いたアレーアンテナ装置 |
| JP2011191100A (ja) * | 2010-03-12 | 2011-09-29 | Mitsubishi Electric Corp | モノパルスレーダ装置 |
| CN102810708A (zh) * | 2012-08-10 | 2012-12-05 | 成都赛纳赛德科技有限公司 | 位于主脊波导一侧的多孔脊波导定向耦合器 |
| JP2015173306A (ja) * | 2014-03-11 | 2015-10-01 | 三菱電機株式会社 | 電子回路 |
| KR101558205B1 (ko) | 2014-08-19 | 2015-10-08 | (주)엑스엠더블유 | 부하 일체형 도파관 결합기 |
| JP2020022074A (ja) * | 2018-08-01 | 2020-02-06 | 古野電気株式会社 | ショートスロット方向性結合器及び合成分配器 |
| JPWO2023112183A1 (ja) * | 2021-12-15 | 2023-06-22 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376585B (zh) * | 2021-05-21 | 2022-03-15 | 电子科技大学 | 一种高分辨率脉冲信号合成装置 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4230511B2 (ja) | 2009-02-25 |
| JPWO2006027828A1 (ja) | 2008-05-08 |
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