CN209880817U - Antenna module - Google Patents
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- CN209880817U CN209880817U CN201921059379.8U CN201921059379U CN209880817U CN 209880817 U CN209880817 U CN 209880817U CN 201921059379 U CN201921059379 U CN 201921059379U CN 209880817 U CN209880817 U CN 209880817U
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Abstract
The utility model provides an antenna module, when satellite terminal communicated with other satellite terminal, the multimedia/data signal that sends from satellite terminal looped through antenna module's merit and divided ware, second multiplexer, radio frequency cable, first multiplexer, duplexer and first type antenna transmission, and the multimedia/data signal that satellite terminal received loops through these devices reverse transmission to guarantee satellite terminal's communication quality through first type antenna; when the satellite terminal carries out position location, the second type antenna, the first multiplexer, the radio frequency cable and the second multiplexer of the antenna module transmit a location signal to the satellite terminal, so that the satellite terminal carries out position location through the location signal, and the satellite terminal can carry out position location under the condition of ensuring the communication quality. And various types of signals can be transmitted through one radio frequency cable, thereby reducing the cost and the volume of the antenna module.
Description
Technical Field
The utility model belongs to the technical field of the antenna, more specifically say, especially, relate to an antenna module.
Background
Receive satellite signal's signal strength's influence at present, need be connected satellite terminal and outdoor passive antenna when indoor use satellite terminal, for example, satellite terminal's radio frequency connector connects the one end of radio frequency cable, outdoor passive antenna is connected to the other end of radio frequency cable, thereby promote signal strength to outdoor mode through the radio frequency cable connection passive antenna, but still can not receive the positioning signal who is used for carrying out position location to satellite terminal through this mode, for example satellite terminal can't receive big dipper satellite signal through passive antenna, make satellite terminal can't carry out position location.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an antenna module for enabling a satellite terminal to perform position location by means of the antenna module. The technical scheme is as follows:
the utility model provides an antenna module, antenna module includes: an active antenna and a feed module;
the active antenna includes: at least a first type of antenna and a second type of antenna;
the active antenna further comprises: the duplexer is connected between the first type antenna and the first multiplexer, and the second type antenna is connected with the first multiplexer;
the feeding module includes: the power divider is connected with the second multiplexer, and multimedia/data signals are transmitted between the power divider and the second multiplexer;
the first multiplexer and the second multiplexer are connected through a radio frequency cable, and the multimedia/data signal and the positioning signal are transmitted between the active antenna and the feed module through the radio frequency cable.
Preferably, the active antenna further includes: power supply unit and first signal separation unit, the feed module still includes: a second signal separation unit and a power interface;
the power interface is connected with a first port of the second multiplexer through the second signal separation unit, the power interface is used for connecting an external power supply, and the first port of the second multiplexer is connected with the radio frequency cable;
the power supply unit is connected with the first port of the first multiplexer through the first signal separation unit, and the first port of the first multiplexer is connected with the radio frequency cable.
Preferably, the first signal separation unit and the second signal separation unit are both first inductors, and a value of the first inductors is within a first preset value range, so that the first inductors block the multimedia/data signals and the positioning signals.
Preferably, the power feeding module further includes: a first antenna control unit and a third signal splitting unit, the active antenna further comprising: a second antenna control unit and a fourth signal separation unit;
the first antenna control unit is connected with the first port of the second multiplexer through the third signal separation unit, the first antenna control unit is used for transmitting an antenna control signal, and the first port of the second multiplexer is connected with the radio frequency cable;
the second antenna control unit is connected with the first port of the first multiplexer through the fourth signal separation unit, the second antenna control unit is used for transmitting the antenna control signal, and the first port of the first multiplexer is connected with the radio frequency cable.
Preferably, the third signal separation unit and the fourth signal separation unit are both second inductors, and values of the second inductors are within a second preset value range, so that the second inductors block the multimedia/data signals and the positioning signals.
Preferably, the active antenna further includes: and the power supply unit is connected with the second antenna control unit.
Preferably, the active antenna further includes: the signal denoising circuit comprises a signal amplifying circuit, a first signal denoising circuit and a second signal denoising circuit;
the output end of the signal amplification circuit is connected with the duplexer, and the input end of the signal amplification circuit is connected with the second port of the first multiplexer;
the input end of the first signal denoising circuit is connected with the duplexer, and the output end of the first signal denoising circuit is connected with the third port of the first multiplexer;
the input end of the second signal denoising circuit is connected with the second type antenna, and the output end of the second signal denoising circuit is connected with the fourth port of the first multiplexer;
the first port of the first multiplexer is connected with the radio frequency cable.
Preferably, the signal amplifying circuit is a power amplifier; the output end of the power amplifier is connected with the first port of the duplexer, and the input end of the power amplifier is connected with the second port of the first multiplexer.
Preferably, the first signal denoising circuit is a first low noise amplifier; the input end of the first low noise amplifier is connected with the second port of the duplexer, and the output end of the first low noise amplifier is connected with the third port of the first multiplexer.
Preferably, the second signal denoising circuit is a second low noise amplifier; the input end of the second low noise amplifier is connected with the second type antenna, and the output end of the second low noise amplifier is connected with the fourth port of the first multiplexer.
According to the technical scheme, when the satellite terminal communicates with other satellite terminals through the antenna module, any one of communication among conversation, video, picture and data communication is carried out, the corresponding multimedia/data signals sent out from the satellite terminal are transmitted through the power divider and the first type antenna of the active antenna, and the multimedia/data signals received by the satellite terminal are transmitted through the first type antenna of the active antenna and the power divider in sequence, so that the conversation quality, the video quality, the picture quality and the data communication quality of the satellite terminal are guaranteed through the first type antenna; when the satellite terminal carries out position location by means of the antenna module, the second type antenna of the active antenna and the power divider transmit a location signal to the satellite terminal, so that the satellite terminal can carry out position location by the location signal, and the satellite terminal can carry out position location under the condition of ensuring the conversation quality, the video quality, the picture quality and the data communication quality. And multimedia/data signals and positioning signals can be transmitted through the radio frequency cable, so that various types of signals can be transmitted through one radio frequency cable, and the cost and the volume of the antenna module can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an antenna module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another antenna module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another antenna module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another antenna module according to an embodiment of the present invention;
fig. 5 is a schematic diagram of signal trends provided by an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another antenna module according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an active antenna in an antenna module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1, which shows a schematic structural diagram of an antenna module according to an embodiment of the present invention, the antenna module may include: an active antenna 10 and a feeding module 20, the active antenna 10 includes multiple types of antennas (e.g. including at least a first type antenna 101 and a second type antenna 102), a duplexer 103 and a first multiplexer 104, the duplexer 103 is connected between the first type antenna 101 and the first multiplexer 104, and the second type antenna 102 is connected to the first multiplexer 104.
Wherein the first type of antenna 101 is used for transmitting multimedia/data signals and enables separation of transmitted multimedia/data signals and received multimedia/data signals by means of the duplexer 103, so-called transmission and reception from the satellite terminal, if the satellite terminal transmits and sends to the satellite by means of the antenna module multimedia/data signals deemed to be transmitted, if the multimedia/data signals transmitted from the satellite to the satellite terminal by means of the antenna module are deemed to be received, and the second type of antenna 102 is used for transmitting positioning signals, so that one active antenna 10 can transmit multiple types of signals and the active antenna 10 can transmit different types of signals by dedicated antennas, respectively.
For example, the first type antenna 101 may be, but is not limited to, a satellite antenna, such that the satellite terminal can communicate with an aerospace satellite through the satellite antenna, such that the satellite terminal can communicate multimedia and data with other satellite terminals by means of the aerospace satellite; the second type antenna 102 may be, but is not limited to, a beidou antenna to receive a positioning signal transmitted by a beidou satellite through the beidou antenna, so that the satellite terminal can perform position location based on the positioning signal.
The power feeding module 20 includes: a power divider 201 and a second multiplexer 202, wherein the power divider 201 is connected to the second multiplexer 202, and multimedia/data signals are transmitted between the power divider 201 and the second multiplexer 202, and for the positioning signals, the positioning signals can be transmitted without the aid of the power divider 201 because: the satellite terminal is operated in a time division duplex mode, the receiving and transmitting are different in frequency, but only one signal transmission path is provided, if the receiving and transmitting signals are transmitted simultaneously, the signals are required to be combined or divided, therefore, when transmitting the multimedia/data signal, the single-path time division signal needs to be divided into two paths by the power divider 201, and then the two paths are provided to the transmitting frequency port of the second multiplexer 202, when receiving multimedia/data signals, it is necessary to combine the signals from the receiving frequency port of the second multiplexer 202 into a single-path signal through the power splitter 201 for the satellite terminal, and then can be transmitted through radio frequency cable, antenna, etc., and the positioning signal is a one-way single-frequency transmission signal sent from the satellite to the satellite terminal, therefore, the transmission of the satellite signal needs to be performed by the power divider 201, and the transmission of the positioning signal does not need to be performed by the power divider 201.
In order to be able to transmit multimedia/data signals and positioning signals between the active antenna 10 and the feeder module 20, the first multiplexer 104 of the active antenna 10 and the second multiplexer 202 of the feeder module 20 are connected by the radio frequency cable 30, such that multimedia/data signals and positioning signals are transmitted between the active antenna 10 and the feeder module 20 through the radio frequency cable 30. The multimedia/data signal is applied to the communication between the satellite terminal and other satellite terminals, and the video and data transmission process, wherein if the communication is carried out, a voice signal is sent out, the video interaction is carried out, a video signal is sent out, the picture interaction is carried out, a picture browsing signal is sent out, and the data interaction is carried out, a data signal is sent out, the voice signal, the video signal and the picture browsing signal are one of the multimedia signals, and the transmission process of the multimedia/data signal and the positioning signal is as follows:
during the communication, video, picture and data transmission process of the satellite terminal, the corresponding multimedia/data signal sent by the satellite terminal is sent to the power divider 201 of the feed module 20 by means of the radio frequency cable, the multimedia/data signal is divided into two paths by the power divider 201 and then sent to the second multiplexer 202, and then sent to the first multiplexer 104 by the radio frequency cable 30 between the second multiplexer 202 and the first multiplexer 104, the first multiplexer 104 separates the multimedia/data signal from all the received signals and sends the multimedia/data signal to the duplexer 103, and then the multimedia/data signal is sent to the first type antenna 101 by the duplexer 103 and sent to the satellite by the first type antenna 101 in the active antenna 10, and if the satellite terminal receives the multimedia/data signal sent by the satellite, the multimedia/data signal sequentially passes through the first type antenna 101, the duplexer 103, the first type antenna 103, the second type antenna 101, the first multiplexer 104, the rf cable 30, the second multiplexer 202, the power divider 201, and the rf cable between the satellite terminal and the power divider 201 are transmitted to the satellite terminal, so as to complete any one of transmission of a call, video, picture, and data.
When multimedia/data signals are transmitted to the outside from the satellite terminal, multimedia/data signals in the form of current are transmitted from the satellite terminal, and after the multimedia/data signals in the form of current are transmitted to the first type antenna 101 by means of the radio frequency cable and the feeding module, the multimedia/data signals in the form of current are converted into multimedia/data signals in the form of electromagnetic waves by the first type antenna 101, so as to be transmitted by means of electromagnetic waves to enable reception by the satellite. If the satellite terminal receives multimedia/data signals, the first type antenna 101 receives the multimedia/data signals in the form of electromagnetic waves, the multimedia/data signals in the form of electromagnetic waves are converted into multimedia/data signals in the form of current through the first type antenna 101, and then the multimedia/data signals are transmitted to the satellite terminal through the radio frequency cable and the feed module 20 in sequence, so that any one of satellite call, video, pictures and data transmission is completed. In any one transmission process of a satellite call, video, picture and data, the influence of radio frequency cable insertion loss on the performance of a receiving and transmitting link can be reduced through the characteristic of improving gain and noise characteristics of the active antenna, the quality of multimedia/data signals is improved, and therefore the call quality, the video quality, the picture quality or the data transmission quality are improved, wherein the receiving and transmitting link is a line through which the multimedia/data signals pass from a satellite terminal to a satellite.
If the satellite terminal performs position location, the second type antenna 102 receives a positioning signal, and the positioning signal is transmitted to the satellite terminal through the first multiplexer 104, the rf cable 30 and the second multiplexer 202, so that the satellite terminal obtains a position by analyzing the positioning signal. During the transmission of the positioning signals, the second-type antenna 102 converts the received positioning signals in the form of electromagnetic waves into positioning signals in the form of electric currents, so that the first multiplexer 104, the rf cable 30 and the second multiplexer 202 can transmit the positioning signals. The second multiplexer 202 transmits the positioning signal in the form of current to the satellite terminal in the following manner: the second multiplexer 202 is connected to another second type antenna 203, and converts the positioning signal in the form of current into the positioning signal in the form of electromagnetic wave through the second type antenna 203, so that the satellite terminal can receive the positioning signal in the form of electromagnetic wave through its own antenna.
The frequency range for the multimedia/data signals in the form of electromagnetic waves and the positioning signals in the form of electromagnetic waves needs to be dependent on the type of the first type antenna 101 and the second type antenna 102, e.g. the first type antenna 101 is a satellite antenna and the multimedia/data signals in the form of electromagnetic waves have a frequency range of 1980 to 2200Mhz, if the second type antenna 102 is a beidou antenna, the positioning signals in the form of electromagnetic waves may have a frequency of 1561.098 Mhz.
According to the technical scheme, when the satellite terminal communicates with other satellite terminals through the antenna module, any one of communication among communication, video, picture and data communication is carried out, corresponding multimedia/data signals sent from the satellite terminal are transmitted through the power divider, the second multiplexer, the radio frequency cable, the first multiplexer, the duplexer and the first type antenna in sequence, and the multimedia/data signals received by the satellite terminal are transmitted through the first type antenna, the duplexer, the first multiplexer, the radio frequency cable, the second multiplexer and the power divider in sequence, so that the communication quality, the video quality, the picture quality and the data communication quality of the satellite terminal are guaranteed through the first type antenna; when the satellite terminal carries out position location by means of the antenna module, the second type antenna, the first multiplexer, the radio frequency cable and the second multiplexer transmit a location signal to the satellite terminal, so that the satellite terminal can carry out position location through the location signal, and the satellite terminal can carry out position location under the condition of ensuring the conversation quality, the video quality, the picture quality and the data communication quality. And multimedia/data signals and positioning signals can be transmitted through the radio frequency cable, so that various types of signals can be transmitted through one radio frequency cable, and the cost and the volume of the antenna module can be reduced.
Referring to fig. 2, which shows a schematic structural diagram of another antenna module according to an embodiment of the present invention, on the basis of fig. 1, the active antenna 10 may further include: the power supply unit 105 and the first signal splitting unit 106, the power feeding module 20 may further include: a second signal splitting unit 204 and a power interface 205.
The power interface 205 is connected to the first port of the second multiplexer 202 through the second signal separating unit 204, the power interface 205 is used for connecting an external power source, the first port of the second multiplexer 202 is connected to the rf cable 30, the power unit 105 is connected to the first port of the first multiplexer 104 through the first signal separating unit 106, the first port of the first multiplexer 104 is connected to the rf cable 30, the external power source obtained by the power interface 205 can be sent to the power unit 105 through the rf cable 30 through this connection, the power unit 105 provides power for the active antenna 10, and the rf cable 30 can transmit multimedia/data signals, positioning signals and power signals while supplying power to the active antenna 10.
In the present embodiment, in order to reduce the transmission of the multimedia/data signal and the positioning signal to the power interface 205 and the power unit 105, the first signal separating unit 106 and the second signal separating unit 204 are introduced to block the multimedia/data signal and the positioning signal from flowing into the power interface 203 and the power unit 105 through the first signal separating unit 106 and the second signal separating unit 204.
One possible way of implementing the first signal separation unit 106 and the second signal separation unit 204 is: the first signal separation unit 106 and the second signal separation unit 204 are both first inductors, and the value of the first inductor is within a first preset value range, so that the first inductor blocks the multimedia/data signal and the positioning signal.
The value of the first preset value range needs to be determined according to the frequencies of the multimedia/data signal, the positioning signal and the power signal, for example, the first preset value range indicates that the inductance value of the first inductor is in the uH level, and the specific embodiment is not limited.
Referring to fig. 3, which shows a schematic structural diagram of another antenna module according to an embodiment of the present invention, on the basis of fig. 1, the feeding module 20 may further include: the first antenna control unit 206 and the third signal separating unit 207, the active antenna 10 may further include: a second antenna control unit 107 and a fourth signal separation unit 108.
The first antenna control unit 206 is connected to the first port of the second multiplexer 202 through the third signal separation unit 207, and the first antenna control unit 206 is used for transmitting an antenna control signal, the first port of the second multiplexer 202 is connected to the rf cable 30, the second antenna control unit 107 is connected to the first port of the first multiplexer 104 through the fourth signal separation unit 108, and the second antenna control unit 107 is used for transmitting an antenna control signal, the first port of the first multiplexer 104 is connected to the rf cable 30, and through this connection, the first antenna control signal can be used for monitoring the operating state of the active antenna 10.
For example, to control the gains of the first and second type antennas 101 and 102, to control the operating temperatures of the first and second type antennas 101 and 102, and so on, these antenna control signals may be sent to the first antenna control unit 206 through an APP (application program) on the satellite terminal, and then sent to the second antenna control unit 107 by the first antenna control unit 206 via the radio frequency cable 30, so that the second antenna control unit 107 controls the active antenna 10.
The method for transmitting the antenna control signal by the APP on the satellite terminal is, but not limited to: a USB (Universal Serial Bus) interface is added to the first antenna control unit 206, and the USB interface is connected to the USB interface of the satellite terminal, so that if an antenna control signal is generated on the APP of the satellite terminal, the antenna control signal can be sent to the first antenna control unit 206 through the USB interface and the corresponding Bus. The way that the APP of the satellite terminal generates the antenna control signal may be, but is not limited to: various control parameters input by a user, such as at least one of gain and temperature, are obtained through the APP of the satellite terminal, and the control parameters are loaded on a carrier, such as a 2M carrier, so as to generate an antenna control signal. After receiving the antenna control signal, the second antenna control unit 107 demodulates the control parameters from the antenna control signal to control the active antenna.
An alternative structure of the corresponding first antenna control unit 206 and second antenna control unit 107 is: the first antenna control unit 206 and the second antenna control unit 107 respectively include: a modem transceiver and an MCU (micro controller Unit). If the satellite terminal is in the stage of configuring the working state, the satellite terminal sends the control parameter to the MCU of the first antenna control unit 206 through the USB interface, then the MCU of the first antenna control unit 206 sends the control parameter to the modem transceiver of the first antenna control unit 206, then the modem transceiver of the first antenna control unit 206 modulates the control parameter at the carrier frequency of 2MHz, and sends the control parameter to the second antenna control unit 107 through the radio frequency cable 30, the modem transceiver of the second antenna control unit 107 demodulates the control parameter, then the MCU of the second antenna control unit 107 configures the working state of the active antenna based on the control parameter, and the way of configuring the working state of the active antenna by the MCU of the second antenna control unit 107 may refer to the existing algorithm, which is not described in this embodiment.
In the present embodiment, in order to reduce the transmission of the multimedia/data signal and the positioning signal to the first antenna controlling unit 206 and the second antenna controlling unit 107, the third signal separating unit 207 and the fourth signal separating unit 108 are introduced to block the multimedia/data signal and the positioning signal from flowing into the first antenna controlling unit 206 and the second antenna controlling unit 107 through the third signal separating unit 207 and the fourth signal separating unit 108.
One possible way of implementing the third signal separation unit 207 and the fourth signal separation unit 108 is to: the third signal separation unit 207 and the fourth signal separation unit 108 are both second inductors, and the values of the second inductors are within a second preset value range, so that the second inductors block the multimedia/data signals and the positioning signals.
The value of the second preset value range needs to be determined according to the frequencies of the multimedia/data signal, the positioning signal and the antenna control signal, for example, the second preset value range indicates that the inductance value of the first inductor is in the nH level, which is not limited in this embodiment.
In addition, in this embodiment, the antenna modules shown in fig. 2 and fig. 3 may be combined, for example, a power supply unit, a first antenna control unit, and a second antenna control unit are simultaneously introduced into the antenna module, and the connection relationship is as shown in fig. 4, so that the active antenna can be powered and the working state thereof can be monitored, and a corresponding one of the radio frequency cables 30 can transmit multimedia/data signals, positioning signals, power signals, and antenna control signals. And the power supply unit and the second antenna control unit are connected in the antenna module shown in fig. 4 so that the power supply unit supplies power to the second antenna control unit.
In order to ensure the transmission and use of the power signal and the antenna control signal, in the antenna module corresponding to fig. 4, the first signal separation unit 106 and the second signal separation unit 204 only allow the power signal to pass through, and the third signal separation unit 207 and the fourth signal separation unit 108 allow the power signal and the antenna control signal to pass through, and the signal transmission process is as shown in fig. 5. And through experiments on PS9780 and PS9880 common and enhanced satellite terminals: when the two types of satellite terminals are used indoors, the radio frequency cable needs to be lengthened to 10 meters for use, the cable loss is almost 7dB, namely, the signal receiving sensitivity and the transmitting power are both reduced by 7dB, the communication quality with other satellite terminals is poor, and positioning cannot be performed indoors, the antenna module provided by the embodiment can be used for transmitting multimedia/data signals and positioning signals, so that multimedia interaction/data interaction and position positioning can be realized, the interaction quality can be enhanced through the active antenna, the interaction performance is still good under the condition that the distance from the satellite terminal to the active antenna is 20 meters, and therefore the indoor interaction performance can be equivalent to the outdoor interaction performance through the antenna module provided by the embodiment.
In this embodiment, the active antenna in the antenna module shown in fig. 1 to 4 further includes: a signal amplification circuit 109, a first signal denoising circuit 110, and a second signal denoising circuit 111, as shown in fig. 6.
The output terminal of the signal amplification circuit 103 is connected to the duplexer 103, and the input terminal of the signal amplification circuit 103 is connected to the second port of the first multiplexer 104. The input end of the first signal denoising circuit 110 is connected to the duplexer 103, and the output end of the first signal denoising circuit 104 is connected to the third port of the first multiplexer 104.
The input end of the second signal denoising circuit 111 is connected to the second type antenna 102, the output end of the second signal denoising circuit 111 is connected to the fourth port of the first multiplexer 104, and the first port of the multiplexer 104 is connected to the rf cable 30.
Specifically, the signal amplifying circuit 109 may be a power amplifier (power amplifier for short), an output end of the power amplifier is connected to the duplexer, and an input end of the power amplifier is connected to the second port of the first multiplexer, so as to perform power amplification on the multimedia/data signal through the power amplifier, thereby increasing a transmission distance of the multimedia/data signal. The first signal denoising circuit 110 may be a first low noise amplifier (abbreviated as low noise amplifier), an input terminal of the first low noise amplifier is connected to the duplexer, an output terminal of the first low noise amplifier is connected to the third port of the first multiplexer to perform noise removal and signal amplification on the multimedia/data signal from the satellite, the same second signal denoising circuit 111 is a second low noise amplifier (abbreviated as low noise amplifier), an input terminal of the second low noise amplifier is connected to the second type antenna, and an output pipe of the second low noise amplifier is connected to the fourth port of the first multiplexer to perform noise removal and signal amplification on the positioning signal from the satellite.
The points to be explained here are: some devices in the antenna module shown in fig. 6 are described for short, and in fig. 6, the first type antenna takes a satellite antenna as an example, and the second type antenna takes a compass antenna as an example, and shows signals transmitted by the devices, which is specifically shown in fig. 6.
Under the condition that the first type antenna is a satellite antenna and the second type antenna is a beidou antenna, one structure of the active antenna 10 in the antenna module provided by the embodiment in practical application is shown in fig. 7, and includes: the satellite communication system comprises a satellite communication low-noise part, a satellite communication power amplifier part, a Beidou low-noise part, a second antenna control unit, a choke inductor, a power supply part, a satellite communication passive antenna (ANT 2 in fig. 7) and a Beidou passive antenna (ANT 1 in fig. 7).
The satellite communication low-noise part comprises: the system comprises a front-mounted low-insertion-loss high-isolation duplexer DF1, a first-stage ultra-low noise amplifier LNA3, a second-stage high out-of-band rejection acoustic meter filter BPF4, a third-stage high-gain low noise amplifier LNA4, a fourth-stage high out-of-band rejection acoustic meter filter BPF5, a fifth-stage low noise amplifier LNA5, a final-stage matching network MN2 and a multiplexer DDF 1.
The satellite communication power amplifier part comprises: the high-isolation power-bearing duplexer DF1 (the same duplexer DF1 with low insertion loss and high isolation is used as the front-mounted DF 1), a directional coupler DC1, a high-power gain high-linearity power amplifier PA1, a high out-of-band rejection surface acoustic filter BPF3, a driving amplifier PA2, a digital control attenuator RR1 and a multiplexer DDF 1.
Big dipper low noise part includes: the system comprises a pre-set acoustic surface filter BPF1 with low insertion loss and high out-of-band rejection, a first-stage low-noise high-linearity amplifier LNA1, a second-stage acoustic surface filter BPF2, a third-stage high-gain amplifier LNA2, a final-stage matching network MN1 and a multiplexer DDF 1.
The second antenna control unit U1 includes a modem transceiver and an MCU, wherein the modem transceiver adopts an OOK (binary on-off keying) modulation method; during transmission, the MCU sends the antenna control signal to the modulation and demodulation transceiver, and the modulation and demodulation transceiver modulates the antenna control signal on a 2M carrier frequency and sends the modulated antenna control signal.
The choke inductor is formed by connecting a large inductor L1 and a small inductor L2 in series, the inductance value of the small inductor L1 is in nH level, 2M antenna control signals and power signals are allowed to pass through, a satellite communication signal (a multimedia/data signal) and a Beidou radio frequency signal (a positioning signal) are blocked, the inductance value of the large inductor L2 is in uH level, the power signals are allowed to pass through, and the 2M antenna control signals are blocked.
The power supply part consists of a DC-DC (voltage changer) (U2 in figure 7) and an LDO (Low Dropout Regulator) (U3 in figure 7) and is used for supplying power to the satellite Low noise part, the satellite power amplifier part, the Beidou Low noise part and the second antenna control unit.
The satellite communication passive antenna ANT2 is used for converting the satellite communication signals in the electromagnetic wave form into the satellite communication signals in the current form and sending the satellite communication signals in the current form to the satellite communication low-noise part, and the Beidou passive antenna ANT1 is used for converting the Beidou radio frequency signals in the electromagnetic wave form into the Beidou radio frequency signals in the current form and sending the Beidou radio frequency signals to the Beidou low-noise part.
The function of the components for the active antenna shown in fig. 7 is as follows:
when receiving a satellite communication signal, the satellite communication signal in the form of weak electromagnetic waves is converted into a satellite communication signal in the form of current through a satellite communication passive antenna ANT2, then is filtered through a preposed low-insertion-loss high-out-of-band rejection duplexer DF1, after unnecessary clutter signals outside the band are rejected, enters a first-stage low-noise amplifier LNA3 for amplification, enters a second-stage amplifier LNA4 for amplification after being filtered by a middle-stage sound meter filter BPF4, then is filtered through a last-stage sound meter BPF5, is amplified by a third-stage amplifier LNA5 and a last-stage matching network MN2, after amplifying the satellite communication signal in the form of weak current to a certain amplitude, finally enters a multiplexer DDF1 for filtering, and then is sent to a radio frequency cable.
When the satellite communication signal is transmitted, the satellite communication signal in a weak current form from a radio frequency cable is filtered by a multiplexer DDF1, the out-of-band unnecessary clutter signals are filtered, then the signal amplitude is adjusted by a numerical control attenuator RR1, a stage amplifier PA2 is pushed to amplify, a middle stage sound meter filter BPF3 filters, a final stage power amplifier PA1 amplifies to high-power signals, a part of signals are coupled to a detector through a directional coupler DC1, a duplexer DF1 filters the signals, and finally the signals are converted into electromagnetic wave signals through a satellite communication passive antenna ANT2 to be transmitted to a satellite.
During positioning, after a weak electromagnetic wave type Beidou radio frequency signal played by a Beidou satellite is converted into a current type signal through a Beidou passive antenna ANT1, the current type signal enters a preposed acoustic meter BPF1 for filtering, a first-stage low-noise amplifier LNA1 for amplifying, a middle-stage acoustic meter BPF2 for filtering, a final-stage low-noise amplifier LNA2 for amplifying, a final-stage matching network, and finally the final-stage radio frequency signal enters a multiplexer DDF1 for filtering and then is sent to a radio frequency cable.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a device includes not only those elements but also other elements not expressly listed or inherent to the device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of another like element in the device.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An antenna module, characterized in that the antenna module comprises: an active antenna and a feed module;
the active antenna includes: at least a first type of antenna and a second type of antenna;
the active antenna further comprises: the duplexer is connected between the first type antenna and the first multiplexer, and the second type antenna is connected with the first multiplexer;
the feeding module includes: the power divider is connected with the second multiplexer, and multimedia/data signals are transmitted between the power divider and the second multiplexer;
the first multiplexer and the second multiplexer are connected through a radio frequency cable, and the multimedia/data signal and the positioning signal are transmitted between the active antenna and the feed module through the radio frequency cable.
2. The antenna module of claim 1, wherein the active antenna further comprises: power supply unit and first signal separation unit, the feed module still includes: a second signal separation unit and a power interface;
the power interface is connected with a first port of the second multiplexer through the second signal separation unit, the power interface is used for connecting an external power supply, and the first port of the second multiplexer is connected with the radio frequency cable;
the power supply unit is connected with the first port of the first multiplexer through the first signal separation unit, and the first port of the first multiplexer is connected with the radio frequency cable.
3. The antenna module of claim 2, wherein the first signal separation unit and the second signal separation unit are both first inductors, and a value of the first inductors is within a first preset value range, so that the first inductors block the multimedia/data signals and the positioning signals.
4. The antenna module of claim 1, wherein the feed module further comprises: a first antenna control unit and a third signal splitting unit, the active antenna further comprising: a second antenna control unit and a fourth signal separation unit;
the first antenna control unit is connected with the first port of the second multiplexer through the third signal separation unit, the first antenna control unit is used for transmitting an antenna control signal, and the first port of the second multiplexer is connected with the radio frequency cable;
the second antenna control unit is connected with the first port of the first multiplexer through the fourth signal separation unit, the second antenna control unit is used for transmitting the antenna control signal, and the first port of the first multiplexer is connected with the radio frequency cable.
5. The antenna module of claim 4, wherein the third signal separation unit and the fourth signal separation unit are both second inductors, and a value of the second inductors is within a second preset value range, so that the second inductors block the multimedia/data signals and the positioning signals.
6. The antenna module of claim 4, wherein the active antenna further comprises: and the power supply unit is connected with the second antenna control unit.
7. The antenna module of any one of claims 1 to 6, wherein the active antenna further comprises: the signal denoising circuit comprises a signal amplifying circuit, a first signal denoising circuit and a second signal denoising circuit;
the output end of the signal amplification circuit is connected with the duplexer, and the input end of the signal amplification circuit is connected with the second port of the first multiplexer;
the input end of the first signal denoising circuit is connected with the duplexer, and the output end of the first signal denoising circuit is connected with the third port of the first multiplexer;
the input end of the second signal denoising circuit is connected with the second type antenna, and the output end of the second signal denoising circuit is connected with the fourth port of the first multiplexer;
the first port of the first multiplexer is connected with the radio frequency cable.
8. The antenna module of claim 7, wherein the signal amplification circuit is a power amplifier; the output end of the power amplifier is connected with the first port of the duplexer, and the input end of the power amplifier is connected with the second port of the first multiplexer.
9. The antenna module of claim 7, wherein the first signal denoising circuit is a first low noise amplifier; the input end of the first low noise amplifier is connected with the second port of the duplexer, and the output end of the first low noise amplifier is connected with the third port of the first multiplexer.
10. The antenna module of claim 7, wherein the second signal denoising circuit is a second low noise amplifier; the input end of the second low noise amplifier is connected with the second type antenna, and the output end of the second low noise amplifier is connected with the fourth port of the first multiplexer.
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| CN201921059379.8U CN209880817U (en) | 2019-07-08 | 2019-07-08 | Antenna module |
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| CN201921059379.8U CN209880817U (en) | 2019-07-08 | 2019-07-08 | Antenna module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111756897A (en) * | 2020-06-22 | 2020-10-09 | 联想(北京)有限公司 | Electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111756897A (en) * | 2020-06-22 | 2020-10-09 | 联想(北京)有限公司 | Electronic equipment |
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