High-power broadband splitter / combiner
By adopting a structural design combining resonant columns and spirals in the RF splitting and combining device, the problem of large size of the RF splitting and combining device in the prior art is solved, and efficient splitting and combining of multi-band signals is achieved, meeting the demand for the simultaneous use of multi-band and multi-purpose communication signals.
Patent Information
- Application Number
- CN202422191748.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-07
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-07
AI Technical Summary
The existing RF split-combiner structure is large in size and it is difficult to meet the needs of simultaneous use of multi-band and multi-purpose communication signals.
The structural design of combining resonant columns and spirals is adopted, and filtering and splitting are carried out in the low-frequency band and the resonant column filter in the high-frequency band to realize multi-band separation and combination of radio frequency signals.
It greatly reduces the structural volume, realizes efficient separation and combination of multi-band signals, and meets the needs of simultaneous use of multi-band and multi-purpose communication signals.
Smart Images
Figure CN223039103U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of radio frequency communication, in particular to a high-power broadband combiner / splitter. Background Art
[0002] The radio frequency communication transceiver is located between the antenna and the baseband processing unit, and is an essential component of the radio frequency communication system, which is widely used in military communication and civilian communication.
[0003] In recent years, with the rapid development of electronic technology, there has emerged a scenario where communication signals of different frequency bands and different uses are used simultaneously within a region. However, when communication signals of different frequency bands and different uses are used simultaneously, different communication devices are required, resulting in a large number of devices, various types, redundancy, and duplicate investment, and it is also not convenient to carry. To solve this problem, different systems, different frequency bands, and different systems can be combined through combiners, power dividers, duplexers, and connecting wires to form a multi-band combiner / splitter, so as to realize the simultaneous use of different systems, different frequency bands, and different systems within a region.
[0004] In the radio frequency transceiver path, the radio frequency transmitter emits several radio frequency signals of different frequencies, and a combiner is used to combine the several radio frequency signals of different frequencies into one path and transmit it from the antenna; several radio frequency signals of different frequencies received by the antenna are divided into several radio frequency signals of different frequencies by using the combiner in reverse and input into the radio frequency receiver. Currently, the combiner in the combiner / splitter is mainly based on resonator columns or mainly based on spiral resonators. Such a combiner structure has a large volume. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a high-power broadband combiner / splitter, which combines a resonator column and a spiral, greatly reducing the structural volume.
[0006] The utility model provides a high-power broadband multi-channel combiner / splitter, which is arranged between the antenna and the radio frequency transceiver circuit; characterized in that: it includes a first combiner and a second combiner used in reverse;
[0007] The radio frequency signal in the range of 330 MHz to 2500 MHz received by the receiving antenna is input from the common end of the first combiner;
[0008] After being filtered by the first spiral filter, the radio frequency signal in the frequency band of 330 MHz to 360 MHz is output from the first port of the first combiner to the first receiver;
[0009] After being filtered by the first resonator column filter, the radio frequency signal in the frequency band of 2160 to 2200 MHz is output from the second port of the first combiner to the receiver 2;
[0010] After being filtered by the second resonant column filter, the RF signal in the frequency band of 2483 - 2500 MHz is output from the third port of the first combiner to the first port of the first duplexer;
[0011] After being filtered by the third resonant column filter, the RF signal in the frequency band of 1100 - 1600 MHz is output from the fourth port of the first combiner to the common end of the third power divider; the first port of the third power divider is connected to the second port of the first duplexer; the common end of the first duplexer is connected to the third receiver;
[0012] The second port of the third power divider is connected to the first port of the second duplexer, and the common end of the second duplexer is connected to HS;
[0013] The second port of the second duplexer and the RF signal in the frequency band of 1680 - 1700 MHz output from the third transmitter are respectively connected to the first port and the second port of the fourth power divider, and the common end of the fourth power divider outputs the RF signal in the frequency band of 1600 - 1700 MHz to the first port of the second combiner and is connected to the fourth resonant column filter;
[0014] The RF signal in the frequency band of 1950 - 2000 MHz transmitted by the second transmitter enters the second port of the second combiner and is filtered by the fifth resonant column filter;
[0015] The RF signal in the frequency band of 380 - 410 MHz transmitted by the third transmitter enters the third port of the second combiner and is then filtered by the second spiral filter;
[0016] The common end of the second combiner is connected to the transmitting antenna.
[0017] Furthermore, in the above-mentioned high-power wide-band multi-channel combiner / splitter: the receiving antenna includes a first receiving antenna and a second receiving antenna, and further includes a first power divider. The first port and the second port of the first power divider are respectively connected to the first receiving antenna and the second receiving antenna, and the common end of the first power divider is connected to the common end of the first combiner.
[0018] Furthermore, in the above-mentioned high-power wide-band multi-channel combiner / splitter: a first feeder is further provided between the first receiving antenna and the first port of the first power divider.
[0019] Furthermore, in the above-mentioned high-power wide-band multi-channel combiner / splitter: a power amplifier is further provided between the first port of the first combiner and the first receiver.
[0020] Furthermore, in the above-mentioned high-power wide-band multi-channel combiner / splitter: the transmitting antenna includes a first transmitting antenna and a second transmitting antenna; and further includes a second power divider. The first port and the second port of the second power divider are respectively connected to the first transmitting antenna and the second transmitting antenna.
[0021] Further, in the above-mentioned high-power broadband multi-channel combiner / splitter: A second feeder is also provided between the first transmitting antenna and the first port of the second power divider.
[0022] Further, in the above-mentioned high-power broadband multi-channel combiner / splitter: A second power amplifier is provided between the third transmitter and the third port of the second combiner.
[0023] In the present utility model, the combiner combines a resonant post and a helix. The helix is used for the 300 MHz frequency band, greatly reducing the structural volume.
[0024] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings
[0025] Figure 1 It is a structural block diagram of a high-power broadband multi-channel combiner / splitter of the present utility model. Specific Embodiments
[0026] As Figure 1 shown, a high-power broadband multi-channel combiner / splitter of the present utility model includes a feeder, a power divider, a combiner, a duplexer, and a power amplifier that are sequentially connected by cables.
[0027] In this embodiment: A high-power broadband multi-channel combiner / splitter is provided between the antenna and the radio frequency transceiver circuit; it includes a first combiner and a second combiner used in reverse.
[0028] The receiving antenna includes a first receiving antenna RX1 and a second receiving antenna TX2. Feeding is added to the first receiving antenna RX1, and a first feeder is provided between the first receiving antenna RX1 and the first port of the first power divider. The radio frequency signals received by the first receiving antenna RX1 and the second receiving antenna RX2 are combined into a radio frequency signal in the frequency band of 330 MHz to 2500 MHz by using the reverse function of the first power divider.
[0029] Connection method: The first port and the second port of the first power divider are respectively connected to the first receiving antenna RX1 and the second receiving antenna RX2, and the common end of the first power divider is connected to the common end of the first combiner.
[0030] The radio frequency signal of 330 MHz to 2500 MHz output from the common end of the first combiner is input from the common end of the first combiner;
[0031] Operating in reverse in the first combiner:
[0032] The radio frequency signal in the frequency band of 330 MHz to 360 MHz output from the first port of the first combiner after being filtered by the first helical filter is amplified by power and then sent to the first receiver; a power amplifier is also provided between the first port of the first combiner and the first receiver.
[0033] The radio frequency signal in the frequency band of 2160 to 2200 MHz output from the second port of the first combiner after being filtered by the first resonant post filter is sent to Receiver 2.
[0034] The radio frequency signal in the frequency band of 2483 to 2500 MHz output from the third port of the first combiner after being filtered by the second resonant post filter is sent to the first port of the first duplexer.
[0035] The radio frequency signal in the frequency band of 1100 to 1600 MHz output from the fourth port of the first combiner after being filtered by the third resonant post filter is sent to the common end of the third power divider; the first port of the third power divider is connected to the second port of the first duplexer; the common end of the first duplexer is connected to the third receiver.
[0036] The second port of the third power divider is connected to the first port of the second duplexer, and the common end of the second duplexer is connected to HS.
[0037] Here, the first receiver, the second receiver, the third receiver, and HS (also known as the fourth receiver) are respectively the receiving ends for receiving radio frequency signals in the frequency bands of 330 MHz to 360 MHz, 2160 to 2200 MHz, 2483 to 2500 MHz, and 1100 to 1600 MHz, and are respectively the receiving devices for processing the signals in these bands. Also, since the frequency band of 1100 to 1600 MHz is actually a digital aeronautical mobile satellite service channel, it is thus labeled as HS.
[0038] The radio frequency signal in the frequency band of 1680 MHz to 1700 MHz output from the third transmitter and the second port of the second duplexer are respectively connected to the first port and the second port of the fourth power divider, and the common end of the fourth power divider outputs a radio frequency signal in the frequency band of 1600 MHz to 1700 MHz, which is connected to the first port of the second combiner and then to the fourth resonant post filter.
[0039] The radio frequency signal of 1950 to 2000 MHz transmitted by the second transmitter enters the second port of the second combiner and is filtered by the fifth resonant post filter.
[0040] The radio frequency signal of 380 to 410 MHz transmitted by the third transmitter enters the third port of the second combiner and is then filtered by the second helical filter.
[0041] Similarly, transmitters 1, 2, 3, and HS are also transmitting devices that respectively transmit RF signals in the range of 1600 MHz to 1700 MHz, RF signals in the range of 1950 to 2000 MHz, RF signals in the range of 380 to 410 MHz, and RF signals in the range of 1100 to 1600 MHz. Here, HS can also be the fourth transmitter. Its output RF signal enters the first port of the second combiner through the second duplexer and the fourth power divider, and is finally transmitted by the transmitting antenna. It can be seen that HS is a transceiver, and it is the transceiver for the digital aeronautical mobile satellite service channel.
[0042] The common end of the second combiner is connected to the transmitting antenna. The transmitting antenna includes the first transmitting antenna TX1 and the second transmitting antenna TX2; it also includes a second power divider. The first port and the second port of the second power divider are respectively connected to the first transmitting antenna TX1 and the second transmitting antenna TX2. A second feeder is also provided between the first transmitting antenna TX1 and the first port of the second power divider.
[0043] A second power amplifier is provided between the third transmitter and the third port of the second combiner.
[0044] In this embodiment, the common end interfaces and each port of the first combiner and the second combiner are all connectors, and each path of signal is directly connected by soldering with silver-plated copper wires for signal transmission. One end of the silver-plated copper wire is soldered to the connector, and the other end is soldered to the resonant post or the spiral post.
[0045] In this embodiment, the high-power broadband multi-channel combiner / splitter requires a frequency band range of 335 MHz to 2500 MHz, and a total of 7 bands are divided, with 4 antenna ports, 2 of which are fed and 2 are not fed.
[0046] In this embodiment, the first combiner, the second combiner, the first duplexer, and the second duplexer have the same functions. They are all lumped-parameter Chebyshev function filters. This function filter has the advantages of fewer devices, steep out-of-band attenuation, and easy implementation. The spiral cavity structure is used in the low-frequency band, greatly reducing the volume of the filter. Through co-simulation with HFSS and AWR simulation software, the resonant frequency and coupling amount are finely tuned by the tuning rod extending into the cavity to meet the filtering requirements.
[0047] In this embodiment, the first power divider and the second power divider have the same functions. They are designed based on the Wilkinson power divider principle to equally divide the power signal and achieve power splitting. The power splitting circuit uses planar microstrip design, effectively reducing the space volume.
[0048] In this embodiment, the so-called first feeder and the second feeder have the same functions. By introducing the feed, the antenna ports are divided into two fed ones and two non-fed ones. Inside, a capacitor is used to block the direct current, and a matching coil is used to isolate the interference of high-frequency signals.
[0049] When the broadband multi-channel multiplexer / demultiplexer described above is used to transmit and receive multi-channel radio frequency signals in the working frequency band, no interference will occur at each signal output port.
[0050] The present embodiment has the following advantages:
[0051] By providing a first multiplexer, a second multiplexer, a first duplexer, and a second duplexer each including a filter, the frequency band range is spanned from 335 MHz to 2500 MHz. The first multiplexer, the second multiplexer, the first duplexer, and the second duplexer use lumped-parameter Chebyshev function filters. This function filter has the advantages of few devices, steep out-of-band attenuation, large far-end attenuation, and easy implementation, and can meet the performance of high isolation.
[0052] By providing a first multiplexer, a second multiplexer, a first duplexer, a second duplexer, a first power divider, a second power divider, a third power divider, and a fourth power divider each including a filter, the division of multiple receiving and transmitting channels can be realized, and the integration of signals with different frequency bands and different systems can be satisfied.
[0053] Most of the multiplexer / demultiplexer uses passive devices, which work stably and have basically no noise.
[0054] By providing a first feeder and a second feeder, a power supply port can be provided, which can meet the use of two systems that require power feeding and do not require power feeding, and reduce the investment in equipment procurement.
[0055] By providing a first power amplifier and a second power amplifier, the insertion loss caused by the power divider can be compensated, and the low-loss functions of receiving 1 and transmitting 1 can be ensured.
[0056] By using a metal shell for encapsulation, the complex electromagnetic anti-interference ability is ensured.
Claims
1. A high-power, wide-band, multi-channel splitter / combiner, arranged between an antenna and a radio frequency transceiver circuit; characterized in that: including a first combiner and a second combiner used in reverse; The radio frequency signal of 330MHZ to 2500MHZ received by the receiving antenna is input from the common end of the first combiner; Outputting a radio frequency signal in a frequency band of 330 MHZ to 360 MHZ from a first port of a first combiner to a first receiver after filtering using a first spiral filter; Outputting a radio frequency signal in a frequency band of 2160 to 2200 MHz from the second port of the first combiner to the second receiver after filtering using the first resonant column filter; Outputting a radio frequency signal in a frequency band of 2483 to 2500 MHz from the third port of the first combiner to the first port of the first duplexer after filtering using the second resonant column filter; After filtering by the third resonant column filter, the radio frequency signal of the 1100-1600 MHZ frequency band is output from the fourth port of the first combiner to the common end of the third power divider; the first port of the third power divider is connected to the second port of the first duplexer; the common end of the first duplexer is connected to the third receiver; The second port of the third power divider is connected to the first port of the second duplexer, and the common terminal of the second duplexer is connected to HS; The second port of the second duplexer and the third transmitter output a 1680MHZ-1700 MHz RF signal, respectively connected to the first port and the second port of the fourth power divider, and the common end of the fourth power divider outputs a 1600MHZ-1700MHZ RF signal, connected to the first port of the second combiner and connected to the fourth resonant column filter; The 1950-2000 MHz radio frequency signal transmitted by the second transmitter enters the second port of the second combiner and is connected to the fifth resonant column filter for filtering; The 380-410 MHz radio frequency signal transmitted by the third transmitter enters the third port of the second combiner and is then filtered by the second spiral filter; The common terminal of the second combiner is connected to the transmitting antenna.
2. The high-power broadband multi-channel splitter / combiner according to claim 1, characterized in that: The receiving antenna comprises a first receiving antenna (RX1) and a second receiving antenna (RX2), and also comprises a first power divider, wherein a first port and a second port of the first power divider are respectively connected to the first receiving antenna (RX1) and the second receiving antenna (RX2), and a common end of the first power divider is connected to a common end of a first combiner.
3. The high-power broadband multi-channel splitter / combiner according to claim 2, characterized in that: A first feeder is also arranged between the first receiving antenna (RX1) and the first port of the first power divider.
4. The high-power broadband multi-channel splitter / combiner according to claim 1, characterized in that: A power amplifier is also arranged between the first port of the first combiner and the first receiver.
5. The high-power broadband multi-channel splitter / combiner according to claim 1, characterized in that: The transmitting antenna comprises a first transmitting antenna (TX1) and a second transmitting antenna (TX2); and further comprises a second power divider, wherein a first port and a second port of the second power divider are respectively connected to the first transmitting antenna (TX1) and the second transmitting antenna (TX2).
6. The high-power broadband multi-channel splitter / combiner according to claim 5, characterized in that: A second feeder is also arranged between the first transmitting antenna (TX1) and the first port of the second power divider.
7. The high-power broadband multi-channel splitter / combiner according to claim 5, characterized in that: A second power amplifier is arranged between the third transmitter and the third port of the second combiner.