CN112134582B - Frequency hopping multiplexer and control method thereof - Google Patents
Frequency hopping multiplexer and control method thereof Download PDFInfo
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- CN112134582B CN112134582B CN202010966267.1A CN202010966267A CN112134582B CN 112134582 B CN112134582 B CN 112134582B CN 202010966267 A CN202010966267 A CN 202010966267A CN 112134582 B CN112134582 B CN 112134582B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B2001/1072—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal by tuning the receiver frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
- H04B2001/7152—Interference-related aspects with means for suppressing interference
Abstract
The embodiment of the invention discloses a frequency hopping multiplexer and a control method thereof. The frequency hopping multiplexer comprises a first channel and a second channel, wherein the first channel comprises a first duplexer, a first filter, a second filter and a second duplexer, and the second channel comprises a third filter. Setting a first change-over switch, a second change-over switch, a third change-over switch, a fourth change-over switch and a fifth change-over switch; one of the pilot frequency signals is output at the output end of the first channel through the first duplexer, the first filter, the second filter and the second duplexer in sequence, and the other signal is output at the output end of the second channel through the third filter; one signal in the same-frequency signals is output from the output end of the first channel through the first duplexer and the first filter in sequence, and the other signal is output from the output end of the second channel through the first duplexer and the second filter in sequence, so that the functions of same-frequency double-receiving and different-frequency double-receiving of the frequency hopping multiplexer are realized.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a frequency hopping multiplexer and a control method thereof.
Background
After the receiver receives the electromagnetic signal received by the antenna, the receiver suppresses or filters the signal without frequency component in the electromagnetic signal, thereby selecting the signal with frequency component in the electromagnetic signal and transmitting the signal to the user interface.
At present, in order to avoid interference from a transmitter to a receiver, a receiver can only implement an inter-frequency receiving function, that is, an existing receiver can only support a receiving function of two frequencies with a certain frequency interval (several megahertz to several tens megahertz), but cannot support a receiving function of two frequencies without a frequency interval or with a very small frequency interval, that is, cannot support a dual-frequency receiving function with the same frequency.
Disclosure of Invention
The embodiment of the invention provides a frequency hopping multiplexer and a control method thereof, which are used for realizing the frequency hopping multiplexer which supports both the different-frequency dual-receiving function and the same-frequency dual-receiving function.
In a first aspect, an embodiment of the present invention provides a frequency hopping multiplexer, including: a first channel and a second channel;
the first channel comprises a first duplexer, a first filter, a second filter and a second duplexer; the first end of the first duplexer is used as the input end of a first channel, the input end of the first channel is connected with the antenna port, the second end of the first duplexer is used as the output end of the reflected signal of the first channel, and the second end of the first duplexer is connected with the input end of a second channel; the first end of the second duplexer is connected with the output end of the first channel through the first selector switch, and the second end of the second duplexer is connected with the absorption impedance; the third end of the first duplexer is connected with the third end of the second duplexer through the first filter and the second selector switch in sequence, and the fourth end of the first duplexer is connected with the fourth end of the second duplexer through the second filter and the third selector switch in sequence;
the second channel comprises a third filter; the first end of the third filter is connected with the input end of the second channel through a fourth selector switch, and the second end of the third filter is connected with the output end of the second channel through a fifth selector switch;
the first change-over switch is connected with the second change-over switch; the third change-over switch is connected with the fifth change-over switch.
Optionally, the first switch is configured to connect the first terminal of the second duplexer with the output terminal of the first channel;
the second switch is configured to communicate the first filter with the third end of the second duplexer;
the third switch is configured to communicate the second filter with the fourth terminal of the second duplexer;
the fourth switching configuration is that the switch is communicated with the third filter and the input end of the second channel;
the fifth switch is configured to connect the third filter and the output end of the second channel;
so that the frequency hopping multiplexer can receive pilot frequency signals in antenna signals from the antenna ports;
or the first switch and the second switch are configured to connect the first filter and the output end of the first channel; the third change-over switch and the fifth change-over switch are configured to connect the second filter and the output end of the second channel; so that the frequency hopping multiplexer can receive the same frequency signal among the antenna signals from the antenna ports.
Optionally, the first switch includes a first terminal, a second terminal, a third terminal, and a fourth terminal;
the first end of the second duplexer is connected with the first end of the first switch, the second end of the first switch is connected with the output end of the first channel, and the fourth end of the first switch is connected with the absorbing impedance;
the second switch comprises a first end, a second end and a third end;
the third end of the first duplexer is connected with the first end of the first filter, the second end of the first filter is connected with the first end of the second selector switch, and the second end of the second selector switch is connected with the third end of the second duplexer;
the third switch comprises a first end, a second end and a third end;
the fourth end of the first duplexer is connected with the first end of the second filter, the second end of the second filter is connected with the first end of the third change-over switch, and the second end of the third change-over switch is connected with the fourth end of the second duplexer;
the fourth switch comprises a first end, a second end and a third end;
the input end of the second channel is connected with the first end of a fourth selector switch, the second end of the fourth selector switch is connected with the first end of a third filter, and the third end of the fourth selector switch is connected with an absorption impedance;
the fifth change-over switch comprises a first end, a second end, a third end and a fourth end;
the second end of the third filter is connected with the first end of the fifth change-over switch, the second end of the fifth change-over switch is connected with the output end of the second channel, and the fourth end of the fifth change-over switch is connected with the absorption impedance;
the third end of the first change-over switch is connected with the third end of the second change-over switch, and the third end of the third change-over switch is connected with the third end of the fifth change-over switch.
Optionally, the first switch is switched to be conducted between the second end and the third end, the second switch, the third switch and the fourth switch are all switched to be conducted between the first end and the third end, and the fifth switch is switched to be conducted between the second end and the third end, so that the frequency hopping multiplexer can receive the same-frequency signals in the antenna signals from the antenna ports.
Optionally, the first switch, the second switch, the third switch, the fourth switch, and the fifth switch are switched to be turned on between the first end and the second end, so that the frequency hopping multiplexer can receive the pilot frequency signal in the antenna signal from the antenna port.
Optionally, the filtering frequency of the first filter and the filtering frequency of the second filter are equal.
Optionally, the power of the third filter is greater than the power of the first filter.
Optionally, the first filter, the second filter and/or the third filter are frequency hopping filters.
In a second aspect, an embodiment of the present invention further provides a method for controlling a frequency hopping multiplexer, where the method for controlling a frequency hopping multiplexer is used to control the frequency hopping multiplexer according to the first aspect;
the control method of the frequency hopping multiplexer comprises the following steps:
controlling the first switch to connect the first terminal of the second duplexer to the output terminal of the first channel;
controlling the second selector switch to communicate the first filter with the third end of the second duplexer;
controlling the third change-over switch to communicate the second filter with the fourth end of the second duplexer;
controlling the fourth selector switch to connect the third filter and the input end of the second channel;
controlling a fifth change-over switch to communicate the third filter with the output end of the second channel; so that the frequency hopping multiplexer can receive the pilot frequency signal from the antenna signals of the antenna ports.
Optionally, the first switch and the second switch are controlled to connect the first filter and the output end of the first channel; controlling the third change-over switch and the fifth change-over switch to connect the second filter and the output end of the second channel; so that the frequency hopping multiplexer can receive the same frequency signal among the antenna signals from the antenna ports.
The frequency hopping multiplexer provided by the embodiment of the invention comprises a first channel and a second channel, wherein the first channel comprises a first duplexer, a first filter, a second filter and a second duplexer, and the second channel comprises a third filter. By setting, the first end of the second duplexer is connected with the output end of the first channel through the first selector switch; the third end of the first duplexer is connected with the third end of the second duplexer through the first filter and the second selector switch in sequence, and the fourth end of the first duplexer is connected with the fourth end of the second duplexer through the second filter and the third selector switch in sequence; the first end of the third filter is connected with the input end of the second channel through a fourth selector switch, and the second end of the third filter is connected with the output end of the second channel through a fifth selector switch; the first change-over switch is connected with the second change-over switch; the third change-over switch is connected with the fifth change-over switch; one of the two pilot frequency signals can be output at the output end of the first channel through the first duplexer, the first filter, the second filter and the second duplexer in sequence, and the other one of the two pilot frequency signals can be output at the output end of the second channel through the first duplexer and the third filter in sequence, so that the pilot frequency double-receiving function of the frequency hopping multiplexer is realized; and one of the two same-frequency signals can be output from the output end of the first channel sequentially through the first duplexer and the first filter, and the other of the two same-frequency signals can be output from the output end of the second channel sequentially through the first duplexer and the second filter, so that the same-frequency double-receiving function of the frequency hopping multiplexer is realized.
Drawings
Fig. 1 is a schematic structural diagram of a frequency hopping multiplexer according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the frequency-hopping multiplexer of FIG. 1 in an operating mode for receiving or transmitting pilot signals;
FIG. 3 is a schematic diagram of the operation mode of the frequency hopping multiplexer of FIG. 1 for receiving or transmitting co-frequency signals;
fig. 4 is a schematic structural diagram of another frequency hopping duplexer provided in the embodiment of the present invention;
FIG. 5 is a schematic diagram of the operation of the frequency hopping multiplexer of FIG. 4 in receiving or transmitting co-frequency signals;
fig. 6 is a schematic diagram of the frequency-hopping multiplexer in fig. 4 in an operation mode for receiving or transmitting pilot signals.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a frequency hopping multiplexer according to an embodiment of the present invention, and referring to fig. 1, the frequency hopping multiplexer includes: a first channel 11 and a second channel 12;
the first channel 11 includes a first duplexer 21, a first filter 31, a second filter 32, and a second duplexer 22; a first end a of the first duplexer 21 is used as an input end a of the first channel 11, the input end a of the first channel 11 is connected to the antenna port O, a second end B of the first duplexer 21 is used as a reflected signal output end B of the first channel 11, and the second end B of the first duplexer 21 is connected to the input end a of the second channel 12; a first end a of the second duplexer 22 is connected to the output end C of the first channel 11 through a first switch K1, and a second end b of the second duplexer 22 is connected to the absorption impedance D; the third terminal c of the first duplexer 21 is connected to the third terminal c of the second duplexer 22 sequentially through the first filter 31 and the second switch K2, and the fourth terminal d of the first duplexer 21 is connected to the fourth terminal d of the second duplexer 22 sequentially through the second filter 32 and the third switch K3;
the second channel 12 comprises a third filter 33; a first end of the third filter 33 is connected to the input end a of the second channel 12 through a fourth switch K4, and a second end of the third filter 33 is connected to the output end C of the second channel 12 through a fifth switch K5; the first switch K1 is connected with the second switch K2; the third switch K3 is connected to the fifth switch K5.
In the present embodiment, the first duplexer 21 and the second duplexer 22 may be duplexers of the same configuration. The antenna port O is used for receiving antenna signals. The first filter 31, the second filter 32, and the third filter 33 can select signals corresponding to their own filtering frequencies from the antenna signals, i.e., remove unwanted frequency components from the antenna signals, so as to select the desired frequency components from the antenna signals, for example, the reflected signal output terminal B of the first channel 11 is used to provide the antenna signals of the frequency components that have not passed through the first filter 31 and the second filter 32 to the input terminal a of the second channel 12. In addition, the absorption impedance D is used for absorbing power that may leak in the first channel 11 or the second channel 12, and the absorption impedance D may include a resistor, and the resistance value of the resistor may be set to 50 ohms. The operation principle of the frequency hopping multiplexer according to this embodiment is explained in detail below, with reference to fig. 1:
input a of the first channel 11 receives an antenna signal; the first duplexer 21 serves as a power divider to perform power division on the antenna signal; the first filter 31 and the second filter 32 select a signal corresponding to the self-filtering frequency from the power-divided antenna signals, and output the selected signal corresponding to the self-filtering frequency to the second duplexer 22 through a signal line between the second terminal of the first filter 31 and the second switch K2 and the third terminal c of the second duplexer 22, and a signal line between the second terminal of the second filter 32 and the third switch K3 and the fourth terminal d of the second duplexer 22; the second duplexer 22 is configured to perform power combining on the signals corresponding to the filtering frequencies of the first filter 31 and the second filter 32 as a combiner, and output the power-combined signal to the output terminal C of the first channel 11 through the first terminal a of the second duplexer 22 and a signal line between the first switch K1 and the output terminal C of the first channel 11, where the frequency of the signal output from the output terminal C of the first channel 11 corresponds to the filtering frequencies of the first filter 31 and the second filter 32.
Of the antenna signals received by the first duplexer 21, the antenna signals that are not selected by the first filter 31 and the second filter 32, i.e., that have not passed through the first filter 31 and the second filter 32, are output to the third filter 33 through the reflected signal output terminal B of the first channel 11, the input terminal a of the second channel 12, and the signal line between the fourth switch K4 and the first terminal of the third filter 33; the third filter 33 selects a signal corresponding to the self-filtering frequency from the antenna signals not selected by the first filter 31 and the second filter 32, and outputs the selected signal corresponding to the self-filtering frequency to the output terminal C of the second channel 12 through the second terminal of the third filter 33 and a signal line between the fifth switch K5 and the output terminal C of the second channel 12, where the frequency of the signal output from the output terminal C of the second channel 12 corresponds to the filtering frequency of the third filter 33.
In summary, if the filtering frequency of the first filter 31 is equal to or approximately equal to the filtering frequency of the second filter 32, and the filtering frequency of the first filter 31 and the filtering frequency of the third filter 33 have a certain frequency interval, for example, the frequency interval is several megahertz to several tens megahertz, the frequency of the signal output from the output terminal C of the first channel 11 and the frequency of the signal output from the output terminal C of the second channel 12 have a certain frequency interval, that is, the signal output from the output terminal C of the first channel 11 and the signal output from the output terminal C of the second channel 12 are different-frequency signals, so that the different-frequency dual-receiving function of the frequency hopping multiplexer is realized. However, if the filtering frequency of the first filter 31 is equal or approximately equal to the filtering frequency of the second filter 32, and the filtering frequency of the first filter 31 is equal or approximately equal to the filtering frequency of the third filter 33, the signal corresponding to the filtering frequency of the third filter 33 output from the reflected signal output terminal B of the first channel 11 is so weak that it is almost impossible to output the signal corresponding to the filtering frequency of the third filter 33 at the output terminal C of the second channel 12, that is, it is impossible to receive the signals of the same two frequencies from the output terminal C of the first channel 11 and the output terminal C of the second channel 12 at the same time.
In this embodiment, the first switch K1 is connected to the second switch K2, and the third switch K3 is connected to the fifth switch K5; accordingly, the signal corresponding to the self-filtering frequency selected by the first filter 31 is output to the output terminal C of the first channel 11 through the second terminal of the first filter 31, the signal line between the second switch K2 and the first switch K1 and the signal line between the first switch K1 and the output terminal C of the first channel 11, and the signal corresponding to the self-filtering frequency selected by the second filter 32 is output to the output terminal C of the second channel 12 through the second terminal of the second filter 32, the signal line between the third switch K3 and the fifth switch K5 and the signal line between the fifth switch K5 and the output terminal C of the second channel 12, so that two signals having the same frequency can be simultaneously received from the output terminal C of the first channel 11 and the output terminal C of the second channel 12, that is, the dual-receiving function of the frequency hopping multiplexer is realized.
In summary, in the frequency hopping multiplexer provided in this embodiment, the first channel 11 and the second channel 12 are provided, and the first channel 11 includes the first duplexer 21, the first filter 31, the second filter 32 and the second duplexer 22, and the second channel 12 includes the third filter 33. Furthermore, by setting the first switch K1, the second switch K2, the third switch K3, the fourth switch K4 and the fifth switch K5, and by setting the positions of the first switch K1, the second switch K2, the third switch K3, the fourth switch K4 and the fifth switch K5 in the first channel 11 and the second channel 12 and the connection relationship between the communication elements in the first channel 11 and the communication elements in the second channel 12 corresponding to the positions, the frequency hopping duplexer can support both the different-frequency dual-receiving function and the same-frequency dual-receiving function.
In addition, the frequency hopping duplexer provided by the embodiment can also support the different-frequency dual-transmission function and the same-frequency dual-transmission function. When dual transmission of pilot frequency is performed, the output end C of the first channel 11 and the output end C of the second channel 12 are respectively used as input ends of two channels of pilot frequency signals, the output end C of the first channel 11 is used for outputting one channel of signal to the antenna port O, the reflected signal output end B of the first channel 11 receives the other channel of signal output from the input end a of the second channel 12 and outputs the other channel of signal to the antenna port O through the first output end of the first channel 11, so that dual transmission of pilot frequency is realized by the frequency hopping duplexer, wherein the second duplexer 22 is used as a power divider of the first channel 11, and the first duplexer 21 is used as a combiner of the first channel 11. When the dual transmission of different frequencies is performed, the output end C of the first channel 11 and the output end C of the second channel 12 are respectively used as the input ends of two paths of same-frequency signals, the second end of the first filter 31 receives one path of signal, the second end of the second filter 32 receives the other path of signal, and then the two paths of same-frequency signals are output to the antenna port O through the input end of the first duplexer 21, so that the frequency hopping duplexer realizes the dual transmission of the same frequency.
Optionally, the first filter 31, the second filter 32 and/or the third filter 33 are frequency hopping filters. Specifically, the first filter 31, the second filter 32 and/or the third filter 33 are configured as frequency hopping filters, so that the requirement of frequency hopping of each channel of the frequency hopping multiplexer at the same time can be met, and therefore, the frequency hopping multiplexer is beneficial to receiving or transmitting signals in a wider frequency range.
Optionally, the first switch K1 is configured to connect the first end a of the second duplexer 22 to the output C of the first channel 11; the second switch K2 is configured to connect the first filter 31 and the third terminal c of the second duplexer 22; the third switch K3 is configured to connect the second filter 32 to the fourth terminal d of the second duplexer 22; the fourth switching arrangement is switched to connect the third filter 33 to the input a of the second channel 12; a fifth switch K5 is configured to connect the third filter 33 to the output C of the second channel 12; so that the frequency hopping multiplexer can receive the pilot frequency signal in the antenna signal from the antenna port O;
alternatively, the first switch K1 and the second switch K2 are configured to connect the first filter 31 with the output C of the first channel 11; the third switch K3 and the fifth switch K5 are configured to connect the second filter 32 with the output C of the second channel 12; so that the frequency hopping multiplexer can receive the same frequency signal among the antenna signals from the antenna port O.
Specifically, referring to fig. 2, fig. 2 is a schematic diagram of an operation mode of the frequency hopping multiplexer in fig. 1 for receiving or transmitting an inter-frequency signal, when the first switch K1 is configured to communicate the first end a of the second duplexer 22 with the output C of the first channel 11, the second switch K2 is configured to communicate the first filter 31 with the third end C of the second duplexer 22, the third switch K3 is configured to communicate the second filter 32 with the fourth end d of the second duplexer 22, the fourth switch is configured to switch the third filter 33 with the input a of the second channel 12, and the fifth switch K5 is configured to communicate the third filter 33 with the output C of the second channel 12, the frequency hopping multiplexer supports the inter-frequency dual-receiving and inter-frequency dual-transmitting functions.
Referring to fig. 3, fig. 3 is a schematic diagram of an operation mode of the frequency hopping multiplexer in fig. 1 for receiving or transmitting the same-frequency signals, when the first switch K1 and the second switch K2 are configured to connect the first filter 31 with the output C of the first channel 11, and the third switch K3 and the fifth switch K5 are configured to connect the second filter 32 with the output C of the second channel 12, and simultaneously, the fourth switch K4 is also configured to disconnect the input a of the second channel 12 from the first end of the third filter 33, and the fifth switch K5 is configured to disconnect the second end of the third filter 33 from the output C of the second channel 12, the frequency hopping multiplexer supports the same-frequency dual-receive and same-frequency dual-transmit functions.
Alternatively, referring to fig. 4, fig. 4 is a schematic structural diagram of another frequency hopping duplexer provided in the embodiment of the present invention, and each of the first switch K1, the second switch K2, the third switch K3, the fourth switch K4, and the fifth switch K5 may be a mechanical switch or an electronic switch including a plurality of contacts.
The first switch K1 comprises a first end, a second end, a third end and a fourth end;
the first end a of the second duplexer 22 is connected to the first end of the first switch K1, the second end of the first switch K1 is connected to the output end C of the first channel 11, and the fourth end of the first switch K1 is connected to the absorption impedance D;
the second switch K2 includes a first terminal, a second terminal, and a third terminal;
the third terminal c of the first duplexer 21 is connected to the first terminal of the first filter 31, the second terminal of the first filter 31 is connected to the first terminal of the second switch K2, and the second terminal of the second switch K2 is connected to the third terminal c of the second duplexer 22;
the third switch K3 includes a first terminal, a second terminal, and a third terminal;
the fourth terminal d of the first duplexer 21 is connected to the first terminal of the second filter 32, the second terminal of the second filter 32 is connected to the first terminal of the third switch K3, and the second terminal of the third switch K3 is connected to the fourth terminal d of the second duplexer 22;
the fourth switch K4 includes a first terminal, a second terminal, and a third terminal;
the input end a of the second channel 12 is connected to the first end of the fourth switch K4, the second end of the fourth switch K4 is connected to the first end of the third filter 33, and the third end of the fourth switch K4 is connected to the absorbing impedance D;
the fifth switch K5 includes a first terminal, a second terminal, a third terminal and a fourth terminal;
a second end of the third filter 33 is connected to a first end of a fifth switch K5, a second end of the fifth switch K5 is connected to an output end C of the second channel 12, and a fourth end of the fifth switch K5 is connected to an absorption impedance D;
the third terminal of the first switch K1 is connected to the third terminal of the second switch K2, and the third terminal of the third switch K3 is connected to the third terminal of the fifth switch K5.
Referring to fig. 5, fig. 5 is a schematic diagram of an operating mode of the frequency hopping multiplexer in fig. 4 for receiving or transmitting the same frequency signals, where the first switch K1 is switched to be conducted between the second end and the third end, the second switch K2, the third switch K3, and the fourth switch K4 are all switched to be conducted between the first end and the third end, and the fifth switch K5 is switched to be conducted between the second end and the third end, so that the frequency hopping multiplexer can receive the same frequency signals in the antenna signals from the antenna port O, that is, the frequency hopping multiplexer supports the same frequency dual-receive and same frequency dual-transmit functions.
Referring to fig. 6, fig. 6 is a schematic diagram of an operation mode of the frequency hopping multiplexer in fig. 4 for receiving or transmitting the pilot frequency signal, where the first switch K1, the second switch K2, the third switch K3, the fourth switch K4, and the fifth switch K5 are all switched to be conductive between the first terminal and the second terminal, so that the frequency hopping multiplexer can receive the pilot frequency signal in the antenna signal from the antenna port O, that is, the frequency hopping multiplexer supports the pilot frequency dual-receive and pilot frequency dual-transmit functions.
Optionally, the filtering frequency of the first filter 31 and the filtering frequency of the second filter 32 are equal. Specifically, in order to avoid the power requirement on the filter from being too high during the transmission of the antenna signal to the output end of each channel, the cost of the frequency hopping multiplexer is increased, and thus two or more filters are adopted. For example, compared with the case where only one third filter 33 is disposed in the second channel 12, the disposing of one first filter 31 and one second filter in the first channel 11 can reduce the requirement for high output power of the filters, thereby reducing the cost of the frequency hopping multiplexer, and the setting of the filtering frequency of the first filter 31 and the filtering frequency of the second filter 32 to be equal ensures that the frequencies of the antenna signals received and output by the first filter 31 and the second filter 32 are equal, so that the output end C of the first channel 11 realizes the output of the filtered signal to the maximum extent, and further avoids the attenuation or loss of the signal.
Optionally, the power of the third filter 33 is larger than the power of the first filter 31. Specifically, in this embodiment, since the second channel of the frequency hopping multiplexer only includes one third filter 33, and there is no filter for sharing power with the third filter 33, the power of the third filter 33 is set to be greater than the power of the first filter 31 or the second filter 32, so as to ensure the quality of the filtered signal output from the output end of the second channel, that is, to avoid attenuation or loss of the output filtered signal.
The embodiment of the invention also provides a control method of the frequency hopping multiplexer, which is used for controlling the frequency hopping multiplexer in the technical scheme; the control method of the frequency hopping multiplexer comprises the following steps:
referring to fig. 1 and 2, the first switch K1 is controlled to connect the first terminal a of the second duplexer 22 to the output terminal C of the first channel 11; controlling the second switch K2 to connect the first filter 31 and the third terminal c of the second duplexer 22; controlling the third switch K3 to connect the second filter 32 and the fourth terminal d of the second duplexer 22; controlling the fourth switch K4 to connect the third filter 33 with the input a of the second channel 12; controlling the fifth switch K5 to connect the third filter 33 with the output C of the second channel 12; so that the frequency hopping multiplexer can receive the pilot frequency signal in the antenna signal from the antenna port O, i.e. the frequency hopping multiplexer is controlled to support the pilot frequency dual-receiving and pilot frequency dual-transmitting functions.
Alternatively, referring to fig. 1 and 3, the first switch K1 and the second switch K2 are controlled to communicate the first filter 31 with the output C of the first channel 11; controlling the third switch K3 and the fifth switch K5 to connect the second filter 32 with the output end C of the second channel 12; controlling the fourth switch K4 to be configured to disconnect the input a of the second channel 12 from the third filter 33; and controlling the fifth switch K5 to disconnect the third filter 33 from the output C of the second channel 12, so that the frequency hopping multiplexer can receive the same-frequency signal from the antenna signals of the antenna port O, that is, controlling the frequency hopping multiplexer to support the same-frequency dual-receiving and same-frequency dual-transmitting functions.
The control method for a frequency hopping multiplexer according to the embodiments of the present invention is used to control a frequency hopping multiplexer receiver in the above technical solution and a frequency hopping multiplexer in the above technical solution, and the frequency hopping multiplexer in the above technical solution belongs to the same inventive concept, so that the technical effect same as the technical effect achieved by the frequency hopping multiplexer in the above technical solution can be achieved, and repeated content is not described herein again.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A frequency hopping multiplexer, comprising: a first channel and a second channel;
the first channel comprises a first duplexer, a first filter, a second filter, and a second duplexer;
a first end of the first duplexer is used as an input end of the first channel, the input end of the first channel is connected with an antenna port, a second end of the first duplexer is used as a reflected signal output end of the first channel, and the second end of the first duplexer is connected with the input end of the second channel; a first end of the second duplexer is connected with the output end of the first channel through a first switch, and a second end of the second duplexer is connected with an absorption impedance; the third end of the first duplexer is connected with the third end of the second duplexer through the first filter and the second selector switch in sequence, and the fourth end of the first duplexer is connected with the fourth end of the second duplexer through the second filter and the third selector switch in sequence;
the second channel comprises a third filter; a first end of the third filter is connected with the input end of the second channel through a fourth selector switch, and a second end of the third filter is connected with the output end of the second channel through a fifth selector switch;
the first change-over switch is connected with the second change-over switch; the third change-over switch is connected with the fifth change-over switch;
when the frequency hopping multiplexer is used for receiving signals, the second end, the third end and the fourth end of the first multiplexer are used for outputting the signals input from the first end of the first multiplexer; when the frequency hopping multiplexer is used for sending signals, the first end of the first multiplexer is used for outputting signals input from the second end, the third end and the fourth end of the first multiplexer;
when the frequency hopping multiplexer is used for receiving signals, the first end and the second end of the second duplexer are used for outputting signals input from the third end and the fourth end of the second duplexer; when the frequency hopping multiplexer is used for transmitting signals, the third terminal and the fourth terminal of the second duplexer are used for outputting the signals input from the first terminal of the second duplexer.
2. The frequency hopping multiplexer of claim 1,
the first switch is configured to connect the first end of the second duplexer with the output end of the first channel;
the second switch is configured to connect the first filter and the third end of the second duplexer;
the third switch is configured to connect the second filter and the fourth terminal of the second duplexer;
the fourth switching arrangement is configured to switch the third filter to the input of the second channel;
the fifth switch is configured to connect the third filter with the output of the second channel;
so that the frequency hopping multiplexer can receive pilot frequency signals among antenna signals from the antenna ports;
or the first switch and the second switch are configured to connect the first filter and the output end of the first channel; the third switch and the fifth switch are configured to connect the second filter with the output of the second channel; so that the frequency hopping multiplexer can receive the same frequency signal from the antenna signals of the antenna ports.
3. The frequency hopping multiplexer of claim 1,
the first switch comprises a first end, a second end, a third end and a fourth end;
a first end of the second duplexer is connected with a first end of the first switch, a second end of the first switch is connected with an output end of the first channel, and a fourth end of the first switch is connected with an absorption impedance;
the second switch comprises a first end, a second end and a third end;
a third end of the first duplexer is connected with a first end of the first filter, a second end of the first filter is connected with a first end of the second switch, and a second end of the second switch is connected with a third end of the second duplexer;
the third switch comprises a first end, a second end and a third end;
a fourth end of the first duplexer is connected to a first end of the second filter, a second end of the second filter is connected to a first end of the third switch, and a second end of the third switch is connected to a fourth end of the second duplexer;
the fourth switch comprises a first end, a second end and a third end;
the input end of the second channel is connected with the first end of the fourth switch, the second end of the fourth switch is connected with the first end of the third filter, and the third end of the fourth switch is connected with an absorption impedance;
the fifth change-over switch comprises a first end, a second end, a third end and a fourth end;
a second end of the third filter is connected with a first end of the fifth switch, a second end of the fifth switch is connected with an output end of the second channel, and a fourth end of the fifth switch is connected with an absorption impedance;
and the third end of the third change-over switch is connected with the third end of the fifth change-over switch.
4. The frequency hopping multiplexer of claim 3,
the first switch is switched to be conducted between the second end and the third end, the second switch, the third switch and the fourth switch are switched to be conducted between the first end and the third end, and the fifth switch is switched to be conducted between the second end and the third end, so that the frequency hopping multiplexer can receive the same-frequency signals in the antenna signals of the antenna port.
5. The frequency hopping multiplexer of claim 3,
the first switch, the second switch, the third switch, the fourth switch and the fifth switch are all switched to be conducted between a first end and a second end, so that the frequency hopping multiplexer can receive pilot frequency signals in antenna signals of the antenna ports.
6. The frequency hopping multiplexer of claim 1,
the filtering frequency of the first filter and the filtering frequency of the second filter are equal.
7. The frequency hopping multiplexer of claim 6,
the power of the third filter is greater than the power of the first filter.
8. The frequency hopping multiplexer of claim 1,
the first filter, the second filter and/or the third filter are frequency hopping filters.
9. A method for controlling a frequency hopping multiplexer, the method being used to control the frequency hopping multiplexer of any one of claims 1 to 8;
the control method of the frequency hopping multiplexer comprises the following steps:
controlling the first switch to connect the first terminal of the second duplexer to the output terminal of the first channel;
controlling the second switch to connect the first filter and the third end of the second duplexer;
controlling the third switch to connect the second filter and the fourth terminal of the second duplexer;
controlling a fourth selector switch to connect the third filter and the input end of the second channel;
controlling the fifth switch to connect the third filter and the output end of the second channel; so that the frequency hopping multiplexer can receive the pilot frequency signal from the antenna signals of the antenna ports.
10. The method of claim 9, wherein the step of controlling the frequency-hopping multiplexer,
controlling the first switch and the second switch to connect the first filter and the output end of the first channel;
controlling the third switch and the fifth switch to connect the second filter and the output end of the second channel; so that the frequency hopping multiplexer can receive the same frequency signal among the antenna signals from the antenna ports.
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| JP2004297549A (en) * | 2003-03-27 | 2004-10-21 | Hitachi Kokusai Electric Inc | Radio equipment |
| CN101321330A (en) * | 2008-07-22 | 2008-12-10 | 京信通信系统（中国）有限公司 | Same-frequency band combination and shunt circuit composite unit, apparatus and method |
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| CN1901437A (en) * | 2006-07-26 | 2007-01-24 | 上海华为技术有限公司 | Communication system duplexer and multiplexer and duplexer and multiplexer method |
| CN103887585B (en) * | 2012-12-21 | 2017-02-08 | 上海联影医疗科技有限公司 | 3db bridge power divider |
| WO2017203919A1 (en) * | 2016-05-27 | 2017-11-30 | 株式会社村田製作所 | Multiplexer, high-frequency front-end circuit, and communication apparatus |
| GB2551346B (en) * | 2016-06-13 | 2020-05-06 | Toshiba Kk | Technique for full duplex with single antenna |
| CN209497458U (en) * | 2019-02-22 | 2019-10-15 | 广东圣大电子有限公司 | A kind of wide interval frequency hopping frequency duplex communications R-T unit |
| CN111181523B (en) * | 2020-01-21 | 2020-11-13 | 诺思(天津)微系统有限责任公司 | Topological structure of quadruplex device |
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| JP2004297549A (en) * | 2003-03-27 | 2004-10-21 | Hitachi Kokusai Electric Inc | Radio equipment |
| CN101321330A (en) * | 2008-07-22 | 2008-12-10 | 京信通信系统（中国）有限公司 | Same-frequency band combination and shunt circuit composite unit, apparatus and method |
| CN106911350A (en) * | 2015-12-22 | 2017-06-30 | 华硕电脑股份有限公司 | Radio communication device |
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