CN214378789U - Miniaturized merit divides ware - Google Patents
Miniaturized merit divides ware Download PDFInfo
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- CN214378789U CN214378789U CN202120604898.9U CN202120604898U CN214378789U CN 214378789 U CN214378789 U CN 214378789U CN 202120604898 U CN202120604898 U CN 202120604898U CN 214378789 U CN214378789 U CN 214378789U
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Abstract
The utility model discloses a miniaturized power divider, which comprises a first inner conductor, a second inner conductor, a third inner conductor and an outer conductor, wherein both ends of the first inner conductor are respectively connected with a first port and a second port; the second inner conductor is sleeved outside the first inner conductor, and a first gap is formed between the second inner conductor and the first inner conductor; one end of the third inner conductor is connected and communicated with the second inner conductor, and the other end of the third inner conductor is connected with a third port; the outer conductor is sleeved outside the third inner conductor, and a second gap is formed between the outer conductor and the second inner conductor; the utility model provides an among the prior art because be applied to the unequal merit of 5G and divide the ware to use coupler formal design, need a plurality of coupling minor matters to cascade and widen the bandwidth for the technical problem that the device is bulky, inner structure is complicated has realized simple structure, small, the good performance beneficial effect.
Description
Technical Field
The utility model relates to a radio frequency wireless communication field especially relates to a ware is divided to miniaturized merit.
Background
The power divider is a power divider, and is a multi-port microwave network device which divides input power into equal or unequal paths of output, and has wide application in microwave systems and wireless communication systems. With the development of miniaturization, wide band and higher operating band of optical fiber communication, mobile communication and the like, not only the frequency of carriers of various communication systems is increasing, but also the operating band is becoming wider. The frequency band of the existing power divider for 4G can reach 2700MHz, and the power divider for 5G requires that 3800MHz and 6000MHz frequency bands are divided into the frequency bands, so that an ultra-wideband device covering the frequency bands of 380MHz to 6000MHz can meet the requirement of 5G.
The existing power divider is generally equal power divider, and generally comprises a coaxial cavity power divider and a microstrip line (or strip line) power divider, wherein the coaxial cavity power divider has the advantages of large bearing power, small insertion loss, balanced power distribution, no isolation between output ports and large standing wave. The microstrip line power divider is smaller in size and low in price, but the insertion loss is larger.
Due to the implementation mode, if the power is unequally distributed by using the theory of the coaxial cavity power divider, the design difficulty and cost will be greatly improved, and therefore, the coupler theory is generally used for manufacturing and implementing the unequally distributed power divider. The unequal power divider designed in the form of the coupler has large in-band ripple degree, each coupling branch of the coupler is a quarter wavelength of the center frequency, and the bandwidth which can be realized by a single coupler is limited (about 60%), so that when the power divider in the ultra-wideband range of 380MHz to 6000MHz is realized, a plurality of coupling branches are required to be cascaded to widen the bandwidth, and the integral volume is large. And because the number of the cascaded branches is too large, the structure is relatively more complex, and the optimization of standing waves and in-band ripples becomes more difficult.
Therefore, the above prior art has at least the following technical problems: in the prior art, as the unequal power divider applied to 5G is designed in a coupler mode, and the bandwidth which can be realized by a single coupler is limited, a plurality of coupling branches are required to be cascaded to widen the bandwidth, so that the device has a large volume and a complex internal structure.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a miniaturized power divider, and solves the technical problems that in the prior art, due to the fact that a coupler is used for an unequal power divider applied to 5G, the bandwidth which can be realized by a single coupler is limited, a plurality of coupling branches are required to be cascaded to widen the bandwidth, the size of a device is large, and the internal structure is complex.
In order to solve the foregoing technical problem, an embodiment of the present application provides a miniaturized power divider, where the power divider includes:
the two ends of the first inner conductor are respectively connected with a first port and a second port;
the second inner conductor is sleeved outside the first inner conductor, and a first gap is formed between the second inner conductor and the first inner conductor;
one end of the third inner conductor is connected and communicated with the second inner conductor, and the other end of the third inner conductor is connected with a third port;
and the outer conductor is sleeved outside the third inner conductor, and a second gap is formed between the outer conductor and the second inner conductor.
Further, the length of the second inner conductor is a quarter wavelength of the center frequency of the working frequency band.
Furthermore, the both ends of first inner conductor are symmetrical, first inner conductor is formed by the cylinder coaxial coupling that a plurality of is the ladder increase from the centre to both ends, the second inner conductor is the ring form, just the coaxial cover of second inner conductor is established on the centre of first inner conductor.
Further, a first medium is filled in the first gap, and a second medium is filled in the second gap; the first medium includes, but is not limited to, air or PTFE and the second medium includes, but is not limited to, air or PTFE.
Further, the third inner conductor is vertically connected with the second inner conductor through threaded connection or welding.
Further, be equipped with the plug on the inner of third inner conductor, the plug is equipped with the external screw thread outward, the socket has been seted up on the global of second inner conductor, just be equipped with the internal thread on the inner wall of socket, the external screw thread with the internal thread cooperatees, the third inner conductor with the second inner conductor passes through the external screw thread with the internal thread cooperation is realized fixedly.
Further, the diameter of the plug is smaller than that of the third inner conductor, so that a first step surface is formed at the joint of the plug and the third inner conductor; the socket extends to in the first clearance to form on the inner wall of socket with first step face matched with second step face, the plug inserts in the socket, first step face supports tightly on the second step face.
Further, the third inner conductor includes a disk coaxially disposed outside the third inner conductor and protruding outward of the third inner conductor.
Further, the third inner conductor comprises a first part and a second part which are respectively positioned at two ends of the disc, the disc is coaxially connected and communicated with the first part and the second part, and the second part is connected with the second inner conductor.
Furthermore, two ends of the second inner conductor are respectively provided with a supporting piece which is lapped with two ends of the second inner conductor, and the supporting pieces are sleeved on the first inner conductor; the inner end of the supporting piece is provided with a first lap joint extending towards the second inner conductor, and two ends of the second inner conductor are provided with second lap joints in lap joint with the first lap joints.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
(1) in the embodiment of the application, only by arranging the first inner conductor 1, the second inner conductor 2, the third inner conductor 3 and the outer conductor 6, reserving the first gap 12 between the second inner conductor 2 and the first inner conductor 1, reserving the second gap 26 between the inner wall of the outer conductor 6 and the second inner conductor 2, and adjusting the sizes of the first gap 12 and the second gap 26, the output power of the second Port2 and the third Port3 can be changed, so that various power distribution ratios can be obtained, the structure is very simple, the size can be very small, and the technical problems that in the prior art, because the unequal power divider applied to 5G uses a coupler form design, because the bandwidth achievable by a single coupler is limited, a plurality of coupling branches are required to be cascaded to widen the bandwidth, the device is large in size and the internal structure is complex are solved, the beneficial effects of simple structure, small volume and good performance are realized.
(2) In the embodiment of the present application, the length of the second inner conductor 2 is set to be a quarter wavelength of the center frequency of the working frequency band, so that the working frequency band of the power divider can cover 380MHz to 6000MHz, and is an ultra-wideband power divider capable of meeting 5G requirements, and at this time, the power distribution ratio is 1000: 1, the power divider has small volume and excellent electrical performance index.
(3) The disc 7 is arranged outside the third inner conductor, the disc 7 is fixed on the third inner conductor 3 and protrudes outwards, the disc can be used for adjusting the in-band waviness, and the in-band waviness can be influenced to a certain degree by adjusting the diameter and the thickness of the disc 7 and the axial position of the disc on the third conductor 3, so that the in-band waviness is finely adjusted and optimized, and the performance of the power divider is better.
In conclusion, the power divider disclosed by the embodiment of the application has the advantages of simple structure and small volume, the 380MHz-6000MHz ultra-wideband power divider is realized by using one quarter wavelength, and the electrical performance index is excellent.
Drawings
Fig. 1 is a schematic structural diagram of a miniaturized power divider according to an embodiment of the present disclosure;
fig. 2 is a diagram illustrating the relationship between the operating frequency of a miniaturized power divider and S31 (transmission parameter), wherein the horizontal axis represents frequency band, the range is 380MHz to 6000MHz, the vertical axis represents the value of S31, and the unit is decibel;
fig. 3 is a schematic diagram of the relationship between the operating frequency and S11 (return loss) of a miniaturized power divider according to an embodiment of the present invention, wherein the horizontal axis represents the operating frequency band ranging from 380MHz to 6000MHz, and the vertical axis represents the VSWR (voltage standing wave ratio, which is generally referred to as standing wave ratio), which reflects the value of S11.
Detailed Description
The embodiment of the application provides a miniaturized power divider, and solves the technical problems that in the prior art, due to the fact that a coupler is used for an unequal power divider applied to 5G, the bandwidth which can be realized by a single coupler is limited, a plurality of coupling branches are required to be cascaded to widen the bandwidth, the size of a device is large, and the internal structure is complex.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
by providing only a first inner conductor, a second inner conductor, a third inner conductor and an outer conductor, and leaving a first gap between the second inner conductor and the first inner conductor, leaving a second gap between the inner wall of the outer conductor and the second inner conductor, adjusting the size of the first gap and the second gap, namely, the output power of the second port and the third port can be changed, so that various power distribution ratios can be obtained, the structure is very simple, the volume can be very small, thereby solving the problems that in the prior art, as the unequal power divider applied to 5G uses the coupler form design, due to the limited bandwidth achievable by a single coupler, multiple coupling branches are required to be cascaded to broaden the bandwidth, the device has the technical problems of large volume and complex internal structure, and has the beneficial effects of simple structure, small volume and good performance;
the length of the second inner conductor is set to be a quarter wavelength of the central frequency of the working frequency band, so that the working frequency band of the power divider can cover 380MHz-6000MHz, and the power divider is an ultra-wideband power divider capable of meeting 5G requirements, and at this time, the power distribution ratio is 1000: 1, the material has excellent electrical performance indexes;
the disc is arranged outside the third inner conductor, is fixed on the third inner conductor and protrudes outwards, and can be used for adjusting the in-band waviness, and the in-band waviness can be influenced to a certain extent by adjusting the diameter and the thickness of the disc and the axial position of the disc on the third conductor, so that the in-band waviness is finely adjusted and optimized, and the performance of the power divider is better.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Fig. 1 is a cross-sectional view of a miniaturized power divider according to an embodiment of the present disclosure, as shown in fig. 1, the power divider includes a first inner conductor 1, a second inner conductor 2, a third inner conductor 3, and an outer conductor 6.
The first inner conductor 1 may be hollow or solid, and is connected with a first Port1 and a second Port 2. Specifically, when the first Port1 is an input Port, the second Port2 is an output Port, and when the first Port1 is an output Port, the second Port2 is an input Port, in the embodiment of the present application, the first Port1 is an input Port, and the second Port2 is an output Port.
Both ends of the first inner conductor 1 are fixed by the radio frequency contacts of the first Port1 and the second Port 2.
The second inner conductor 2 is sleeved outside the first inner conductor 1, and a first gap 12 is formed between the second inner conductor 2 and the first inner conductor 1.
The third inner conductor 3 may be hollow or solid, one end of the third inner conductor 3 is fixedly connected to the second inner conductor 2 and is communicated with the first gap 12, and the other end of the third inner conductor 3 is connected to a third Port 3; specifically, the third Port3 is an output Port. The other end of the third inner conductor 3 is fixed by a radio frequency connector of the third Port 3.
The outer conductor 6 is sleeved outside the third inner conductor 3, a second gap 26 is arranged between the outer conductor 6 and the second inner conductor 2, and a third gap 36 is arranged between the outer conductor 6 and the third inner conductor 3.
Input power is input from the first Port1, with most of the power being transmitted over the first inner conductor 1 to the second Port 2; another part of the power is coupled from the first inner conductor 1 to the second inner conductor 2 and transmitted to the third Port3 through the third inner conductor 3, and the output power of the second Port2 and the third Port3 can be changed by adjusting the size of the first gap 12 and the second gap 26, so that various power distribution ratios (ratio of the output power of the second Port2 to the output power of the third Port 3) can be obtained, and unequal distribution is realized.
For example, when the length of the second inner conductor 2 is a quarter wavelength of the center frequency of the operating bandwidth (the length of the second inner conductor 2 is about 20mm in this example), the power division ratio is 1000: 1, if it is required 100: 1, the ratio of power distribution can be achieved by decreasing the distance between the first inner conductor 1 and the second inner conductor 2, i.e. decreasing the first gap 12, and increasing the distance between the inner wall of the outer conductor 6 and the second inner conductor 2, i.e. increasing the second gap 26, to achieve 100: a power division ratio of 1.
In the embodiment of the application, only by arranging the first inner conductor 1, the second inner conductor 2, the third inner conductor 3 and the outer conductor 6, reserving the first gap 12 between the second inner conductor 2 and the first inner conductor 1, reserving the second gap 26 between the inner wall of the outer conductor 6 and the second inner conductor 2, and adjusting the sizes of the first gap 12 and the second gap 26, the output power of the second Port2 and the third Port3 can be changed, so that various power distribution ratios can be obtained, the structure is very simple, the size can be very small, and the technical problems that in the prior art, because the unequal power divider applied to 5G uses a coupler form design, because the bandwidth achievable by a single coupler is limited, a plurality of coupling branches are required to be cascaded to widen the bandwidth, the device is large in size and the internal structure is complex are solved, the beneficial effects of simple structure, small volume and good performance are realized.
In addition, the length of the second inner conductor 2 is a quarter wavelength of the center frequency of the working frequency band, so that the working frequency band of the power divider can cover 380MHz to 6000MHz, and the power divider is an ultra-wideband power divider capable of meeting 5G requirements, and at this time, the power division ratio is 1000: 1; therefore, the power divider of the utility model realizes 1000 parts in the frequency band of 380MHz-6000 MHz: 1, the unequal power divider has small volume and excellent electrical performance indexes.
Further, the both ends symmetry of first inner conductor 1, first inner conductor 1 is formed by a plurality of cylinder coaxial coupling that is the ladder increase from the centre to both ends, second inner conductor 2 is the ring form, just 2 coaxial sleeves of second inner conductor are established on the centre of first inner conductor 1. For example, the first inner conductor 1 and the second inner conductor 2 are each symmetrical about the central axis of the third inner conductor 3. Alternatively, the first inner conductor 1 may be directly a cylinder, but the inner wall structure of the second inner conductor 2 and the outer conductor 6 needs to be changed accordingly.
Further, the first gap 12 is filled with a first medium, and the first medium is air or PTFE (polytetrafluoroethylene); the second gap 26 is filled with a second medium, the second medium includes air or PTFE, and the third gap 36 is filled with a third medium, the third medium is air or PTFE.
Further, the third inner conductor 3 is vertically connected to the second inner conductor 2, and one end of the third inner conductor 3 is inserted into the second inner conductor 2 along the radial direction of the second inner conductor 2 and is fixedly connected to the second inner conductor 2.
Further, the third inner conductor 3 with the second inner conductor 2 passes through threaded connection or welding, for example, be equipped with plug 8 on the inner of third inner conductor 3, plug 8 is equipped with the external screw thread outward, socket 9 has been seted up on the global of second inner conductor 2, just be equipped with the internal thread on the inner wall of socket 9, the external screw thread with the internal thread cooperatees, third inner conductor 3 with the second inner conductor 2 through the external screw thread with the internal thread cooperation is realized fixedly.
Further, the diameter of the plug 8 is smaller than that of the third inner conductor 3, so that a first step surface is formed at the joint of the plug 8 and the third inner conductor 3; socket 9 to extend in first clearance 12, and form on the inner wall of socket 9 with first step face matched with second step face, plug 8 inserts in the socket 9, first step face supports tightly on the second step face.
Further, the third inner conductor 3 comprises a disc 7, and the disc 7 is coaxially arranged outside the third inner conductor 3 and protrudes out of the third inner conductor 3.
Specifically, the disc 7 is fixed on the third inner conductor 3 and protrudes outward, and is mainly used for adjusting the in-band waviness, and the in-band waviness can be affected to a certain extent by adjusting the diameter and thickness of the disc 7 and the axial position on the third conductor 3, so that the in-band waviness can be finely adjusted and optimized, and the performance of the power divider is better, but the in-band waviness can be optimized by adjusting the disc 7, and the disc 7 can achieve only one of the effects.
Further, the third inner conductor 3 includes a first portion and a second portion respectively located at two ends of the disk 7, the disk 7 is coaxially connected and communicated with the first portion and the second portion, wherein the second portion is connected with the second inner conductor 2, and in the embodiment, the diameter of the second portion is smaller than that of the first portion.
Furthermore, two ends of the second inner conductor 2 are respectively provided with a support piece 4 and a support piece 5 which are lapped with two ends of the second inner conductor 2; the inner ends of the supporting pieces 4 and 5 are provided with first lap joints extending towards the second inner conductor 2, the two ends of the second inner conductor 2 are provided with second lap joints in lap fit with the first lap joints, and the first lap joints and the second lap joints are overlapped; and the joints of the supports 4, 5, the first lap joint and the second lap joint are clamped between the second inner conductor 2 and the outer conductor 6 to fix and position the second inner conductor 2.
Specifically, the supports 4 and 5 are hollow cylinders, and the material of the supports 4 and 5 is PTFE, ULTEM or PEEK (polyether ether ketone), wherein: ULTEM refers to PEI (Polyetherimide), a thermoplastic engineering resin. The supports 4 and 5 are used for supporting and stabilizing the second inner conductor 2 to ensure the distance between the second inner conductor 2 and the inner wall of the outer conductor 6, thereby ensuring the second gap 26, and at the same time, defining the position of the second inner conductor 2 in the axial direction of the first inner conductor 1, ensuring the intermediate position. Changing the position of the support 4, 5 (for example placing the support 4, 5 between the first inner conductor 1 and the second inner conductor 2) may also be implemented as long as the second gap 26 is ensured.
Further, the third inner conductor 3 is fixedly connected with the second inner conductor 2 along the middle of the second inner conductor 2 in the axial direction.
The power divider of the embodiment has a simple structure and a small volume, realizes an ultra-wideband power divider of 380MHz-6000MHz only by using one quarter wavelength, has excellent indexes, and has S31 of-29.4 dB to-30.2 dB in the ultra-wideband of 380MHz-6000MHz, as shown in FIG. 2; the first Port1 has a standing wave ratio (VSWR) below 1.10 as shown in fig. 3.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
(1) in the embodiment of the application, only by arranging the first inner conductor 1, the second inner conductor 2, the third inner conductor 3 and the outer conductor 6, reserving the first gap 12 between the second inner conductor 2 and the first inner conductor 1, reserving the second gap 26 between the inner wall of the outer conductor 6 and the second inner conductor 2, and adjusting the sizes of the first gap 12 and the second gap 26, the output power of the second Port2 and the third Port3 can be changed, so that various power distribution ratios can be obtained, the structure is very simple, the size can be very small, and the technical problems that in the prior art, because the unequal power divider applied to 5G uses a coupler form design, because the bandwidth achievable by a single coupler is limited, a plurality of coupling branches are required to be cascaded to widen the bandwidth, the device is large in size and the internal structure is complex are solved, the beneficial effects of simple structure, small volume and good performance are realized.
(2) In the embodiment of the present application, the length of the second inner conductor 2 is set to be a quarter wavelength of the center frequency of the working frequency band, so that the working frequency band of the power divider can cover 380MHz to 6000MHz, and is an ultra-wideband power divider capable of meeting 5G requirements, and at this time, the power distribution ratio is 1000: 1, the power divider has small volume and excellent electrical performance index.
(3) The disc 7 is arranged outside the third inner conductor, the disc 7 is fixed on the third inner conductor 3 and protrudes outwards, the disc can be used for adjusting the in-band waviness, and the in-band waviness can be influenced to a certain degree by adjusting the diameter and the thickness of the disc 7 and the axial position of the disc on the third conductor 3, so that the in-band waviness is finely adjusted and optimized, and the performance of the power divider is better.
In conclusion, the power divider disclosed by the embodiment of the application has the advantages of simple structure and small volume, the 380MHz-6000MHz ultra-wideband power divider is realized by using one quarter wavelength, and the electrical performance index is excellent.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be termed a second element, and, similarly, a second element may be termed a first element, without departing from the scope of example embodiments.
The terms of orientation, outer, intermediate, inner, etc., as referred to or as may be referred to in the specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed according to the position and the use state of the structure. Therefore, these and other directional terms should not be construed as limiting terms.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. Those skilled in the art can make various changes, modifications and equivalent arrangements to those skilled in the art without departing from the spirit and scope of the present application; moreover, any equivalent alterations, modifications and variations of the above-described embodiments according to the spirit and techniques of this application are intended to be within the scope of the claims of this application.
Claims (10)
1. A miniaturized power divider, comprising:
the two ends of the first inner conductor are respectively connected with a first port and a second port;
the second inner conductor is sleeved outside the first inner conductor, and a first gap is formed between the second inner conductor and the first inner conductor;
one end of the third inner conductor is connected and communicated with the second inner conductor, and the other end of the third inner conductor is connected with a third port;
and the outer conductor is sleeved outside the third inner conductor, and a second gap is formed between the outer conductor and the second inner conductor.
2. The miniaturized power divider of claim 1, wherein the length of the second inner conductor is a quarter wavelength of a center frequency of an operating frequency band.
3. The miniaturized power divider of claim 1, wherein two ends of the first inner conductor are symmetrical, the first inner conductor is formed by coaxially connecting a plurality of cylinders which are increased in a step shape from the middle to two ends, the second inner conductor is annular, and the second inner conductor is coaxially sleeved on the middle of the first inner conductor.
4. The miniaturized power divider of claim 1, wherein the first gap is filled with a first medium, and the second gap is filled with a second medium; the first medium includes, but is not limited to, air or PTFE and the second medium includes, but is not limited to, air or PTFE.
5. The miniaturized power divider of claim 1, wherein the third inner conductor is vertically connected to the second inner conductor by screwing or welding.
6. The miniaturized power divider of claim 1, wherein a plug is arranged at an inner end of the third inner conductor, an external thread is arranged outside the plug, a socket is arranged on a peripheral surface of the second inner conductor, an internal thread is arranged on an inner wall of the socket, the external thread is matched with the internal thread, and the third inner conductor and the second inner conductor are fixed through matching of the external thread and the internal thread.
7. The miniaturized power divider of claim 6, wherein a diameter of the plug is smaller than a diameter of the third inner conductor, thereby forming a first step surface at a junction of the plug and the third inner conductor; the socket extends to in the first clearance to form on the inner wall of socket with first step face matched with second step face, the plug inserts in the socket, first step face supports tightly on the second step face.
8. The miniaturized power divider of claim 1, wherein the third inner conductor comprises a disk coaxially disposed outside the third inner conductor and protruding outward of the third inner conductor.
9. The miniaturized power divider of claim 8, wherein the third inner conductor comprises a first portion and a second portion respectively disposed at two ends of the disk, and the disk is coaxially connected to and communicates with the first portion and the second portion.
10. The miniaturized power divider of claim 1, wherein two ends of the second inner conductor are respectively provided with a supporting member overlapping with two ends of the second inner conductor, and the supporting members are sleeved on the first inner conductor; the inner end of the supporting piece is provided with a first lap joint extending towards the second inner conductor, and two ends of the second inner conductor are provided with second lap joints in lap joint with the first lap joints.
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