WO2017071331A1

WO2017071331A1 - Multi-frequency band transceiver, and method for transmitting and receiving multi-frequency band radio-frequency signal

Info

Publication number: WO2017071331A1
Application number: PCT/CN2016/091621
Authority: WO
Inventors: 雷梦毕; 段亚娟; 李香玲; 张国俊
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-10-27
Filing date: 2016-07-25
Publication date: 2017-05-04
Also published as: CN106656243A

Abstract

A multi-frequency band transceiver, and a method for transmitting and receiving a multi-frequency band radio-frequency signal. The multi-frequency band transceiver comprises: a transceiving antenna, configured to receive an uplink multi-frequency band radio-frequency signal sent by a mobile station, transfer same to a transceiving duplexer module, and transmit a downlink multi-frequency band radio-frequency signal; the transceiving duplexer module, configured to send the uplink multi-frequency band radio-frequency signal after removal of an out-of-band interference signal or a spurious signal by filtration to a receiver, and transfer the downlink multi-frequency band radio-frequency signal after removal of an out-of-band interference signal or a spurious signal by filtration to the transceiving antenna; the receiver, configured to perform low-noise power amplification on the filtered uplink multi-frequency band radio-frequency signal, and divide the uplink multi-frequency band radio-frequency signal for which the low-noise power amplification is completed into multiple paths of single-frequency band radio-frequency signals; and a transmitter, configured to combine multiple paths of downlink single-frequency band signals sent by a base station and perform power amplification on same, and send same to the transceiving duplexer module. The embodiments of the present invention simplify the design of a multi-frequency band transceiver.

Description

Multi-band transceiver and multi-band radio frequency signal transmitting and receiving method

Technical field

This article relates to, but is not limited to, the field of mobile communications, and in particular to a multi-band transceiver and a method for transmitting and receiving multi-band RF signals.

Background technique

With the development of wireless communication technology, wider spectrum demand is the most important factor affecting the evolution of technology, and wireless base station products are developing toward broadband and multi-band.

In the related art, as shown in FIG. 1, a plurality of single-band transceivers are simply combined, and then a combined plurality of single-band transceivers are combined into a wideband multi-band transceiver through a multiplexer. The design of the broadband multi-band transceiver is complicated. In addition, the related broadband multi-band transceiver is bulky and costly, and does not meet the development needs of the miniaturized base station.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

Embodiments of the present invention provide a multi-band transceiver and a multi-band RF signal transmission and reception method, which can simplify the design of a broadband multi-band transceiver.

An embodiment of the present invention provides a multi-band transceiver, including:

The transceiver antenna is configured to receive an uplink multi-band RF signal sent by the mobile station, and transmit the signal to the transceiver duplexer module; and transmit the downlink multi-band RF signal from the transceiver duplexer module;

The transceiver duplexer module is configured to filter the uplink multi-band RF signal received by the transceiver antenna to filter the out-of-band interference signal or the spurious signal, and then send the signal to the receiver; and filter the downlink multi-band RF signal output by the transmitter The external interference signal or the spurious signal is transmitted to the transceiver antenna;

The receiver is configured to perform low-noise power amplification on the uplink multi-band RF signal filtered by the transceiver duplexer module, and divide the uplink multi-band RF signal that completes the low-noise power amplification into multiple single-band RF signals;

The transmitter is configured to combine multiple downlink single-band signals sent by the base station into one downlink The multi-band RF signal is subjected to power amplification, and the power-amplified downlink multi-band RF signal is sent to the transceiver duplexer module.

Optionally, the receiver includes:

The low noise amplification module is configured to perform low noise power amplification on the received uplink multi-band RF signal filtered by the transceiver duplexer module, and send the signal to the frequency selection filter module;

The frequency selection filter module is provided with an inlet and a plurality of outlets, and is configured to separate the uplink multi-band RF signals received by the low-noise amplification module received by the set inlet into low-noise power amplification into multiple single-band RF signals, and Sending to the first radio frequency adjustable gain amplifier module through the plurality of outlets provided;

The first RF adjustable gain amplifier module is configured to perform gain adjustment on each received single-band RF signal and send the signal to the RF filter module;

The RF filter module is configured to perform noise suppression on a frequency band other than the own frequency band of the uplink multi-band RF signal received by the transceiver antenna in the transmission path of the input single-band RF signal, and filter each single The frequency band radio frequency signals are respectively sent to the corresponding first frequency conversion modules;

The first local oscillator module is configured to provide a first local oscillator signal for the first frequency conversion module;

The first frequency conversion module is configured to convert the input single-band RF signal to a single-band intermediate frequency signal according to the first local oscillation signal, and output the signal to the intermediate frequency adjustable gain amplifier module;

The intermediate frequency adjustable gain amplifier module is configured to perform gain amplification or attenuation on the converted single-band frequency intermediate frequency signal, and output to the first intermediate frequency filter module;

The first intermediate frequency filter module is configured to filter the combined frequency spurious signal introduced by the variable frequency amplification or attenuation of the single-band intermediate frequency signal and output to the first digital processing module;

The first digital processing module is configured to sample the single-band intermediate frequency signal filtered by the combined frequency spurious signal, convert the single-band intermediate frequency signal from an analog signal to a baseband digital signal, and perform digital signal processing.

Optionally, the frequency selection filter module is configured to: separate the uplink multi-band RF signals that are received by the low-noise amplification module and perform low-noise power amplification through the set inlet, and can reach each single frequency band to enable other Single-band out-of-band blocking suppresses horizontal multi-channel single-band RF signals with in-band blocking and sends them to the first RF adjustable gain amplifier through multiple outlets Module.

Optionally, the first radio frequency adjustable gain amplifier module is configured to: perform gain reduction when the input single-band radio frequency signal is a large blocking signal for each received single-band radio frequency signal, when the input single When the frequency band RF signal is a small sensitivity signal, the gain is amplified; and the single-band RF signal after the gain adjustment is sent to the RF filter module.

Optionally, the transmitter includes:

a second digital processing module configured to process the baseband transmit signal, sample the transmitted baseband signal, and convert the frequency to an intermediate frequency signal;

The second intermediate frequency filter module is configured to filter out spurious signals other than the intermediate frequency band of the intermediate frequency signal, and send the filtered intermediate frequency signal to the second frequency conversion module;

a second local oscillation module: configured to provide a second local oscillation signal for the second frequency conversion module;

a second frequency conversion module configured to: convert the intermediate frequency signal input by the second intermediate frequency filter module to a single frequency band RF signal, and send the signal to the second RF adjustable gain amplifier module;

a second RF adjustable gain amplifier module configured to amplify or attenuate the transmitted single-band RF signal and output the same to the combiner module;

The combiner module is configured to combine the single-band RF signals output by the second RF adjustable gain amplifier, and output one multi-band RF signal to the broadband power amplifier module;

The broadband power amplifier module is configured to perform power amplification on the multi-band RF signal output by the combiner, so that the output multi-band RF signal reaches the power required by the system.

The embodiment of the invention further provides a method for transmitting multi-band radio frequency signals, including:

Combining multiple downlink single-band signals sent by the base station into one downlink multi-band RF signal and performing power amplification;

The power-amplified downlink multi-band RF signal is filtered out of the out-of-band interference signal or the spurious signal;

The downlink multi-band RF signal after the out-of-band interference signal or the spurious signal is filtered out.

Optionally, the combining the multiple downlink single-band signals into one downlink multi-band RF signal and performing power amplification includes:

The baseband transmit signal is processed, and the transmitted baseband signal is sampled and converted into an intermediate frequency signal;

Filtering out spurious signals outside the intermediate frequency band of the intermediate frequency signal;

Converting the intermediate frequency signal of the spurious signal filtered out of the intermediate frequency band to the single-band radio frequency signal according to the preset second local oscillation signal;

Amplifying or attenuating the single-band radio frequency signal obtained by the frequency conversion;

Combining the amplified or attenuated single-band RF signals to obtain one multi-band RF signal;

The obtained multi-band RF signal is power amplified so that the output multi-band RF signal reaches the power required by the system.

The embodiment of the invention further provides a method for receiving multi-band radio frequency signals, including:

Receiving an uplink multi-band radio frequency signal sent by the mobile station;

Filtering outbanded out-of-band interference signals or spurious signals on the received uplink multi-band RF signals;

After the low-noise power amplification of the uplink multi-band RF signal filtering out the out-of-band interference signal or the spurious signal, the multi-band RF signal amplified by the low-noise power is divided into multiple single-band RF signals.

Optionally, after the low-noise power amplification is performed on the uplink multi-band RF signal that filters out the out-of-band interference signal or the spurious signal, the multi-band RF signal amplified by the low-noise power is divided into multiple single-band RF signals, including :

Performing low-noise power amplification on the received uplink multi-band RF signal that filters out-of-band interference signals or spurious signals;

Receiving the low-noise power amplified uplink multi-band RF signal through an inlet, and separating the received low-noise power amplified uplink multi-band RF signal into multiple single-band RF signals, and transmitting through multiple outlets;

Performing gain adjustment on each of the single-band radio frequency signals transmitted;

The gain-adjusted single-band RF signal self-transmitting channel performs noise suppression on the received frequency band of the uplink multi-band RF signal except the own frequency band;

Converting each filtered single-band RF signal to a single-band intermediate frequency signal according to a preset first local oscillation signal;

The frequency-amplified single-band IF signal is amplified or attenuated;

Combined frequency spurs introduced by mid-frequency conversion of single-band IF signals that are amplified or attenuated Signal filtering

The single-band intermediate frequency signal filtered by the combined frequency spurious signal is sampled, and the single-band intermediate frequency signal is converted from an analog signal to a baseband digital signal, and digital signal processing is performed.

Optionally, the splitting the received low-noise power amplified uplink multi-band RF signal into multiple single-band RF signals includes:

Each single frequency band amplified by the received low noise power is divided into multiple single frequency band RF signals capable of suppressing the outband blocking of other single frequency bands to the level of in-band blocking in each single frequency band.

Optionally, performing, respectively, performing gain adjustment on each of the single-band radio frequency signals includes:

When the single-band radio frequency signal is a large blocking signal, gain attenuation is performed; when the single-band radio frequency signal is a small sensitivity signal, gain amplification is performed.

Compared with the related art, the technical solution provided by the embodiment of the present invention includes: a transceiver antenna, configured to receive an uplink multi-band radio frequency signal sent by a mobile station, and transmit the signal to a transceiver duplexer module; and transmit the transceiver duplexer module. The downlink multi-band RF signal; the transceiver duplexer module is configured to filter the uplink multi-band RF signal received by the transceiver antenna to filter out the out-of-band interference signal or the spurious signal, and then send the signal to the receiver; The signal is filtered out to the out-of-band interference signal or the spurious signal and transmitted to the transceiver antenna; the receiver is configured to perform low-noise power amplification on the uplink multi-band RF signal filtered by the transceiver duplexer module, and the low noise power amplification is completed. The uplink multi-band RF signal is divided into multiple single-band RF signals; the transmitter is configured to combine the multi-channel downlink single-band signals transmitted by the base station into one downlink multi-band RF signal and perform power amplification, and the power-amplified downlink multi-band The RF signal is sent to the transceiver duplexer module. The embodiment of the invention simplifies the design of the multi-band transceiver.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic structural diagram of a multi-band transceiver in the related art;

2 is a schematic structural diagram of a multi-band transceiver according to an embodiment of the present invention;

3 is a schematic structural diagram of a multi-band transceiver according to an alternative embodiment of the present invention;

4 is a schematic structural diagram of an integrated module of 2T2R according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of implementing a multi-band transceiver by using multiple 2T2R integrated modules according to an embodiment of the present invention; FIG.

6 is a flowchart of a method for transmitting a multi-band radio frequency signal according to an embodiment of the present invention;

7 is a flowchart of a method for transmitting a multi-band radio frequency signal according to an alternative embodiment of the present invention;

8 is a flowchart of a method for receiving multi-band radio frequency signals according to an embodiment of the present invention;

9 is a flow chart of a method for receiving a multi-band radio frequency signal according to an alternative embodiment of the present invention.

Embodiments of the invention

Embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

In order to solve the problem that the transceiver design in the related art is complicated, bulky, and costly, and cannot meet the development requirements of the miniaturized base station, the embodiment of the present invention provides a multi-band transceiver, and the receiver can directly receive the broadband multi-band. The RF signal is amplified by the low-noise module and then the multi-band signal is processed separately by using the frequency selection filter; the transmitter can combine the multi-channel single-band signals into one broadband multi-band signal through the combiner module, and then through the broadband power amplifier and The antenna is emitted, and the embodiment of the invention reduces the complexity of the design of the multi-band transceiver, simplifies the structure of the radio frequency link, and has small volume and low cost. The embodiments of the present invention are described below in conjunction with the accompanying drawings and embodiments. It is to be understood that the embodiments described herein are merely illustrative of the invention and are not limiting of the invention.

Device embodiment

The embodiment of the present invention provides a multi-band transceiver. FIG. 2 is a schematic structural diagram of a multi-band transceiver according to an embodiment of the present invention. As shown in FIG. 2, the multi-band transceiver according to the embodiment of the present invention includes: The transceiver antenna 20, the transceiver duplexer module 22, the receiver 24, and the transmitter 26 are described below, and the modules of the embodiments of the present invention will be described.

The transceiver antenna 20 is configured to receive an uplink multi-band radio frequency signal sent by the mobile station, and transmit the signal to the transceiver duplexer module 22; and transmit the downlink multi-band radio frequency signal from the transceiver duplexer module 22;

The transceiver duplexer module 22 is configured to filter the uplink multi-band RF signal received by the transceiver antenna to filter the out-of-band interference signal or the spurious signal, and then send the signal to the receiver 24; and output the downlink multi-band RF signal of the transmitter. External interference signal or spurious signal is transmitted to the transceiver antenna 20;

The receiver 24 is configured to perform low-noise power amplification on the uplink multi-band RF signal filtered by the transceiver duplexer module, and divide the uplink multi-band RF signal that completes the low-noise power amplification into multiple single-band RF signals;

Optionally, the receiver 24 includes:

The frequency selection filter module is provided with an inlet and a plurality of outlets, and is configured to separate the uplink multi-band RF signals received by the low-noise amplification module received by the set inlet into low-noise power amplification into multiple single-band RF signals, and The plurality of outlets are sent to the first radio frequency adjustable gain amplifier module; wherein the plurality of outlets include each of the single-band radio frequency signals corresponding to a corresponding one of the outlets.

In summary, the receiver processes the multi-band RF signal mainly including: the transceiver antenna receives the multi-band signal (the above multi-band RF signal) to the transceiver duplexer module, and the transceiver duplexer module will send and receive the day. The multi-band signal received by the line is filtered and sent to the receiver; the low-noise amplifier in the receiver performs low-noise amplification on the multi-band signal; then enters the frequency selection filter, which has an inlet and a plurality of outlets. The frequency selection separates multiple receiving frequency bands; the multi-band signals are separated into single-band signals by a frequency selective filter, and then output to an RF adjustable gain amplifier for amplifying or attenuating the RF signals; each transmission channel can be separately Independent control is achieved by its own adjustable gain amplifier. The single-band signal after the RF adjustable gain amplifier enters the RF filter, and the RF filter must satisfy certain suppression for other frequency bands; after filtering, each single-band signal enters the corresponding frequency conversion module respectively; the frequency conversion module will receive the single The frequency band RF signal is frequency-converted to the intermediate frequency, and the output to the intermediate frequency adjustable gain amplifier is used to amplify or attenuate the intermediate frequency signal; the connected intermediate frequency filter module is used to filter the frequency combination spur generated by the frequency conversion; the digital processing module samples the intermediate frequency signal The intermediate frequency analog signal is converted into a baseband digital signal, and then digital signal processing is performed.

The transmitter 26 is configured to combine the multi-channel downlink single-band signals sent by the base station into one downlink multi-band radio frequency signal and perform power amplification, and send the power-amplified downlink multi-band radio frequency signal to the transceiver duplexer module 24.

Optionally, the transmitter 26 includes:

The broadband power amplifier module is configured to perform power amplification on the multi-band RF signal output by the combiner, so that the output multi-band RF signal reaches the power required by the system;

It should be noted that after the broadband power amplifier module completes the power amplification of the downlink multi-band RF signal, the power-amplified downlink multi-band RF signal is sent to the transceiver duplexer module.

When the transmitter transmits multi-band RF signals, it includes:

The digital processing module of the transmitter processes the baseband transmit signal, samples the transmitted baseband signal, and converts the frequency to an intermediate frequency signal. The IF filter module is used to filter out spurious signals outside the frequency band; the frequency conversion module converts the received single-band IF signal to the RF frequency, and outputs the RF adjustable gain amplifier to amplify or attenuate the RF signal; each RF The output of the variable gain amplifier is connected to the input of the combiner; the combiner module of the transmit link has multiple inlets and an outlet, which can combine the single-band signals outputted by the variable gain amplifier, and then output a multi-band RF Signal; the output of the combiner is connected to the input end of the broadband power amplifier for amplifying the multi-band signal; the output end of the power amplifier is connected to the transceiver duplexer module; the transceiver duplexer module filters the multi-band signal output by the transmitter to The transceiver antenna transmits and transmits the multi-band signal of the downlink of the base station.

3 is a schematic structural diagram of a multi-band transceiver according to an alternative embodiment of the present invention. As shown in FIG. 3, a multi-band transceiver according to an embodiment of the present invention includes:

The transceiver duplexer module is configured to filter the uplink multi-band RF signal received by the transceiver antenna and filter out the out-of-band interference signal or the spurious signal, and then send the signal to the receiver; and filter the downlink multi-band RF signal output by the transmitter to remove the out-of-band interference. Signal or spurious signal is transmitted to the transceiver antenna;

The receiver includes:

The frequency selection filter module is provided with an inlet and a plurality of outlets, and is configured to separate the uplink multi-band RF signals received by the low-noise amplification module received by the low-noise amplification module through the set inlet, and can reach each single frequency band ( Band) can suppress the out-of-band blocking of other single-band to the horizontal multi-channel single-band RF signal with in-band blocking, and send it to the first RF adjustable gain amplifier module through multiple outlets.

The first RF adjustable gain amplifier module is configured to perform gain attenuation on the received single-band RF signal, and when the input single-band RF signal is a large blocking signal, when the input single-band RF signal is a small sensitivity signal When the gain is amplified, the single-band RF signal after the gain adjustment is sent to the RF filter module.

It should be noted that gain attenuation and gain amplification are common technical means for those skilled in the art, and are not described herein again.

The transmitter includes:

a second digital processing module: configured to process the baseband transmit signal, sample the transmitted baseband signal, and convert the frequency to an intermediate frequency signal;

a second intermediate frequency filter module: filtering out spurious signals other than the intermediate frequency band of the intermediate frequency signal, and transmitting the filtered intermediate frequency signal to the second frequency conversion module;

The second frequency conversion module is configured to: convert the intermediate frequency signal input by the second intermediate frequency filter module to a single frequency band radio frequency signal;

The second radio frequency adjustable gain amplifier module is configured to amplify or attenuate the transmitted single-band radio frequency signal; in the embodiment of the invention, the transmission path gain of each single frequency band is independently adjustable;

a combiner module configured to combine the single-band RF signals output by the second RF adjustable gain amplifier to output a multi-band RF signal;

4 is a schematic structural diagram of a multi-transmission (2T2R) integrated module according to an embodiment of the present invention. As shown in FIG. 4, a receiving link of an integrated module of 2T2R (multiple transmit and multiple receive) includes:

a first RF adjustable gain amplifier module: configured to appropriately attenuate the received RF signal;

a first local oscillator module: the first local oscillator module is configured to provide a first local oscillator signal to the first variable frequency module;

The first frequency conversion module is configured to: convert the input RF signal to the intermediate frequency signal;

IF adjustable gain amplifier module: set to gain amplify the attenuated single-band IF signal;

a first intermediate frequency filter module: configured to filter out a combined frequency spurious signal introduced by a frequency conversion of a single-band intermediate frequency signal for gain attenuation;

a first digital processing (ADC) module: configured to sample a single-band IF signal that filters out the combined frequency spurs, and convert the single-band IF signal from an analog signal to a baseband digital signal;

The 2T2R (multiple transmit and receive) transmit links include:

a second DAC module: configured to sample the transmitted baseband signal and convert the frequency to an intermediate frequency signal;

a second intermediate frequency filter module: configured to filter out spurious signals other than the intermediate frequency band of the intermediate frequency signal;

a second local oscillation module: configured to provide a second local oscillation signal to the second frequency conversion module;

The second frequency conversion module is configured to frequency-convert the input intermediate frequency signal to the single-band RF signal;

The second RF adjustable gain amplifier module is configured to perform gain amplification on the transmitted RF signal.

In the embodiment of the present invention, the 2T2R (multiple transmit and receive) transmit link further includes:

FIG. 5 is a schematic structural diagram of implementing a multi-band transceiver by using multiple 2T2R integrated modules according to an embodiment of the present invention, as shown in FIG. 5, including:

The transceiver duplexer module is configured to filter the uplink multi-band radio frequency information to remove the out-of-band interference or spurs, and then send the downlink multi-band RF signal output by the transmitter to the outband interference signal or the spurious signal. Transmission to the transceiver antenna;

The receiver includes:

Low noise amplification module: configured to perform low noise power amplification on the received uplink multi-band RF signal filtered by the transceiver duplexer module;

Frequency selection filter module: configured to separate the uplink multi-band signal received by the antenna port into a single-band RF signal;

The first RF adjustable gain amplifier module is configured to perform gain attenuation when the input single-band RF signal is a large blocking signal for each single-band RF signal received, and when the input single-band RF signal is a small sensitivity signal When the gain is amplified, the single-band RF signal after the gain adjustment is sent to the RF filter module. That is, it is set to adjust the gain of the link to realize the function of amplifying small signals and attenuating large signals;

The RF filter module is configured to perform noise suppression on other frequency bands other than the own frequency band; that is, the transmission path of the input single-band RF signal itself performs noise suppression on the frequency band other than the own frequency band of the uplink multi-band RF signal received by the transmitting and receiving antenna. .

2T2R integrated module: converts the input single-band RF signal into baseband signal, including gain adjustment and signal filtering. Here, the first digital processing module of the 2T2R integrated module is configured to sample the single-band intermediate frequency signal, convert the single-band intermediate frequency signal from the analog signal to the baseband digital signal, and perform digital signal processing.

transmitter:

2T2R integrated module: converts the baseband signal into a radio frequency signal output, including signal amplification and filtering; Here, the 2T2R integrated module is a second digital processing module, configured to process the baseband transmit signal, sample the transmitted baseband signal, and convert the frequency to an intermediate frequency signal;

a second RF adjustable gain amplifier module: configured to amplify the RF signal; the second RF adjustable gain amplifier module further includes a gain adjustment function;

Combiner module: set to combine multiple single-band RF signals into one broadband multi-band RF signal;

Broadband power amplifier module: Power amplification of broadband multi-band RF signals.

In summary, the multi-band transceiver provided by the embodiment of the present invention can implement multi-band reception and transmission; can directly receive multi-band signals, and after multiple bands pass through the low-noise amplifier, connect the frequency selection filter to separate the multi-band into Single-band processing; simplifies the receiving link architecture; can also combine multiple single-band signals into one broadband multi-band signal through the combiner module, and then send out through the broadband power amplifier and antenna; simplify the transmission link architecture; The multi-band radio frequency signal transceiver proposed by the embodiment of the invention has the advantages of low cost, small size, low power consumption, etc., which reduces the complexity of design and implementation of the scheme; and is advantageous for miniaturization of the wireless base station product.

Method embodiment 1

The embodiment of the present invention provides a method for transmitting a multi-band radio frequency signal, and FIG. 6 is a flowchart of a method for transmitting a multi-band radio frequency signal according to an embodiment of the present invention. As shown in FIG. 6, a multi-band radio frequency according to an embodiment of the present invention is shown. The method of signal transmission includes:

Step 601: Combine the multiple downlink single-band signals sent by the base station into one multi-band radio frequency signal and perform power amplification;

Step 602: Filter the power-amplified downlink multi-band radio frequency signal to filter out the out-of-band interference signal or the spurious signal.

Step 603, transmitting a downlink multi-band radio frequency signal after filtering out-band interference signals or spurious signals.

Optionally, in step 601, combining the multiple single-band signals into one multi-band RF signal and performing power amplification includes:

FIG. 7 is a flowchart of a method for transmitting a multi-band radio frequency signal according to an alternative embodiment of the present invention. As shown in FIG. 7, the following processing is included:

Step 701: The transmitted baseband signal is sampled and converted into an intermediate frequency signal output.

Step 702: processing the transmitted intermediate frequency signal; generally filtering, filtering out spurious signals outside the intermediate frequency band;

Step 703, converting the input intermediate frequency signal to a single-band radio frequency signal;

Step 704, performing signal processing on the frequency-converted single-band radio frequency signal; the signal processing includes performing power amplification or attenuation, and the gain adjustment condition is determined according to the single-band signal power level;

Step 705, combining the signal-processed single-band RF signals to obtain one multi-band RF signal; assuming that there are N single-band signal transmission paths, the output single-band RF signals are respectively Band (Band) 1, Band 2... Bandn; Band1, Band2...Bandn combines through a combiner to output a broadband multi-band RF signal Band1+Band2+...Bandn;

Step 706: Perform power amplification processing on the broadband multi-band RF signal, and output a signal of a suitable power; the multi-band RF signal to be obtained is power amplified, so that the output multi-band RF signal reaches the power required by the system.

Step 707: The duplexer filters the multi-band RF signal output by the transmitter, and may include: filtering the power-amplified downlink multi-band RF signal to filter out the out-of-band interference signal or the spurious signal;

Step 708: The antenna transmits the multi-band radio frequency signal of the downlink of the base station. That is, the downlink multi-band RF signal after filtering out of the out-of-band interference signal or the spurious signal.

In summary, with the technical solution of the embodiment of the present invention, the transmitter can combine multiple multi-band signals into one broadband multi-band signal through the combiner module, and then send out through the broadband power amplifier and the antenna;

Method embodiment two

The embodiment of the present invention provides a method for receiving multi-band radio frequency signals, and FIG. 8 is a flowchart of a method for receiving multi-band radio frequency signals according to an embodiment of the present invention. As shown in FIG. 8, a multi-band radio according to an embodiment of the present invention is shown. Methods of signal reception include:

Step 801: Receive an uplink multi-band radio frequency signal sent by the mobile station.

Step 802: Filter out the outband interference signal or the spurious signal on the received uplink multi-band radio frequency signal.

Step 803: After performing low-noise power amplification on the uplink multi-band RF signal that filters out the out-of-band interference signal or the spurious signal, the multi-band RF signal amplified by the low-noise power is divided into multiple single-band RF signals for processing.

Optionally, in step 803, after the outband interference signal or the spurious signal is filtered, the uplink multi-band radio frequency signal is subjected to low noise power amplification, and the low-frequency power amplified multi-band radio frequency signal is divided into multiple single-band radio frequency signals. The signals include:

1. Perform low-noise power amplification on the received uplink multi-band RF signal that filters out-of-band interference signals or spurious signals;

2. Receiving an uplink multi-band RF signal with low noise power amplification through an inlet, and separating the received low-noise power amplified uplink multi-band RF signal into multiple single-band RF signals, and outputting through multiple outlets; Separating the received low-noise power amplified uplink multi-band RF signal into multiple single-band RF signals includes:

3. Gain adjustment is performed separately for each single-band RF signal transmitted; optionally, when the single-band RF signal is a large blocking signal, gain attenuation is performed; when the single-band RF signal is a small sensitivity signal, gain amplification is performed.

4. The gain-adjusted single-band RF signal self-transmitting channel performs noise suppression on the received uplink multi-band RF signal except for the frequency band other than its own frequency band;

5. Converting each filtered single-band RF signal to a single-band intermediate frequency signal according to a preset first local oscillator signal;

6. The gain or attenuation of the single-band intermediate frequency signal after frequency conversion is performed;

7. Filtering the combined frequency spurious signals introduced by the variable frequency amplification or attenuation of the single-band intermediate frequency signal in the intermediate frequency conversion;

8. Sampling the single-band IF signal filtering out the combined frequency spurs, converting the mid-frequency IF signal from the modulo signal to the baseband digital signal, and performing digital signal processing.

FIG. 9 is a flowchart of a method for receiving a multi-band radio frequency signal according to an alternative embodiment of the present invention. As shown in FIG. 9, the method includes the following processing:

Step 901: The transceiver antenna receives the uplink multi-band radio frequency signal.

Step 902: The transceiver duplexer module filters the uplink multi-band RF signal received by the transceiver antenna and sends the signal to the receiver.

Step 903, performing low-noise power amplification on the uplink multi-band radio frequency signal;

Step 904, the low-noise power amplified uplink multi-band radio frequency signal enters the frequency selection filter module; the frequency selection filter module is a single-input and multi-output structure, and separates an uplink multi-band signal received by one inlet (antenna port); If the multi-band signal received by the antenna includes N single-band RF signals; the frequency selection filter module separates an uplink multi-band RF signal into N single-band RF signals;

Step 905: Perform signal processing on the single-band radio frequency signal. The embodiment of the present invention may include performing power amplification or attenuation, and the gain adjustment condition is determined according to the power consumption of the single-band signal; filtering the single-band radio frequency signal to be outside the self-band Noise suppression in other frequency bands;

Step 906: The input single-band radio frequency signal is converted to a single-band intermediate frequency signal by using the first frequency conversion module;

Step 907: performing signal processing on the frequency-converted single-band intermediate frequency signal; including power amplification or attenuation of the single-band intermediate frequency signal; and determining the gain adjustment according to the power of the intermediate frequency signal; and the first intermediate frequency filtering module is configured to combine the frequency of the frequency conversion. Dust filtration

Step 908: sampling the filtered first intermediate frequency signal, converting the single frequency intermediate frequency signal from the analog signal to the baseband digital signal, and then performing digital signal processing.

The technical solution of the embodiment of the invention can directly receive the broadband multi-band signal, and the multi-band signal is amplified by the low-noise amplifier module, and then connected to the frequency selection filter to separate the multi-band into a single-band Line processing.

A computer storage medium storing computer executable instructions for executing a method for transmitting and/or receiving a multi-band radio frequency signal is stored in a computer storage medium.

It is apparent that those skilled in the art can make modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. A general purpose system can also be used with teaching based on the teachings herein. The structure required to construct such a system is apparent from the above description. Moreover, the invention is not directed to any particular programming language. It is to be understood that the description of the present invention may be implemented in a programming language, and the description of the specific language is described above for the preferred embodiments of the invention.

In the description provided herein, numerous specific details are set forth. However, it is understood that the embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of the description.

Similarly, the features of the present invention are sometimes grouped together into a single embodiment, figure in the description of exemplary embodiments of the invention in the above description of the exemplary embodiments of the invention. Or in the description of it. However, the method disclosed is not to be interpreted as reflecting the intention that the claimed invention requires more features than those recited in the claims. Rather, as the following claims reflect, inventive aspects reside in less than all features of the single embodiments disclosed herein. Therefore, the claims following the specific embodiments are hereby explicitly incorporated into the embodiments, and each of the claims as a separate embodiment of the invention.

Those skilled in the art will appreciate that the modules in the client in the embodiment can be adaptively changed and placed in one or more clients different from the embodiment. The modules in the embodiment can be combined into one module, and in addition, they can be divided into multiple submodules A block or subunit or subcomponent. In addition to such features and/or at least some of the processes or units being mutually exclusive, any combination of the features disclosed in the specification, including the accompanying claims, the abstract and the drawings, and any methods so disclosed, or All processes or units of the client are combined. Each feature disclosed in this specification (including the accompanying claims, the abstract and the drawings) may be replaced by alternative features that provide the same, equivalent or similar purpose.

In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features that are included in other embodiments and not in other features, combinations of features of different embodiments are intended to be within the scope of the present invention. Different embodiments are formed and formed. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

Component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or digital signal processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components loaded with the ordered web address in accordance with an embodiment of the present invention. . The invention can also be implemented as a device or device program (e.g., a computer program and a computer program product) for performing some or all of the methods described herein. Such a program implementing the invention may be stored on a computer readable medium or may be in the form of one or more signals. Such signals may be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

It is to be noted that the above-described embodiments are illustrative of the invention and are not intended to be limiting, and that the invention may be devised without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as a limitation. The word "comprising" does not exclude the presence of the elements or steps that are not recited in the claims. The word "a" or "an" The invention can be implemented by means of hardware comprising several distinct elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means can be embodied by the same hardware item. The use of the words first, second, and third does not indicate any order. These words can be interpreted as names.

Industrial applicability

The above technical solution simplifies the design of the multi-band transceiver.

Claims

A multi-band transceiver, the multi-band transceiver comprising:

The transceiver antenna is configured to receive an uplink multi-band RF signal sent by the mobile station, and transmit the signal to the transceiver duplexer module; and transmit the downlink multi-band RF signal from the transceiver duplexer module;

The transceiver duplexer module is configured to filter the uplink multi-band RF signal received by the transceiver antenna to filter the out-of-band interference signal or the spurious signal, and then send the signal to the receiver; and filter the downlink multi-band RF signal output by the transmitter The external interference signal or the spurious signal is transmitted to the transceiver antenna;

The receiver is configured to perform low-noise power amplification on the uplink multi-band RF signal filtered by the transceiver duplexer module, and divide the uplink multi-band RF signal that completes the low-noise power amplification into multiple single-band RF signals;

The transmitter is configured to combine the multi-channel downlink single-band signals sent by the base station into one downlink multi-band radio frequency signal and perform power amplification, and send the power amplified downlink multi-band radio frequency signal to the transceiver duplexer module.
The multi-band transceiver of claim 1 wherein said receiver comprises:

The low noise amplification module is configured to perform low noise power amplification on the received uplink multi-band RF signal filtered by the transceiver duplexer module, and send the signal to the frequency selection filter module;

The frequency selection filter module is provided with an inlet and a plurality of outlets, and is configured to separate the uplink multi-band RF signals received by the low-noise amplification module received by the set inlet into low-noise power amplification into multiple single-band RF signals, and Sending to the first radio frequency adjustable gain amplifier module through the plurality of outlets provided;

The first RF adjustable gain amplifier module is configured to perform gain adjustment on each received single-band RF signal and send the signal to the RF filter module;

The RF filter module is configured to perform noise suppression on a frequency band other than the own frequency band of the uplink multi-band RF signal received by the transceiver antenna in the transmission path of the input single-band RF signal, and filter each single The frequency band radio frequency signals are respectively sent to the corresponding first frequency conversion modules;

The first local oscillator module is configured to provide a first local oscillator signal for the first frequency conversion module;

The first frequency conversion module is configured to convert the input single-band RF signal according to the first local oscillator signal To the single-band IF signal, output to the intermediate frequency adjustable gain amplifier module;

The intermediate frequency adjustable gain amplifier module is configured to perform gain amplification or attenuation on the converted single-band frequency intermediate frequency signal, and output to the first intermediate frequency filter module;

The first intermediate frequency filter module is configured to filter the combined frequency spurious signal introduced by the variable frequency amplification or attenuation of the single-band intermediate frequency signal and output to the first digital processing module;

The first digital processing module is configured to sample the single-band intermediate frequency signal filtered by the combined frequency spurious signal, convert the single-band intermediate frequency signal from an analog signal to a baseband digital signal, and perform digital signal processing.
The multi-band transceiver of claim 2, wherein the frequency selective filter module is configured to: separate the upstream multi-band RF signals that are received by the set inlet and that are subjected to low-noise power amplification by the low-noise amplification module. The multi-channel single-band RF signal capable of suppressing the out-of-band blocking of other single-frequency bands to the level of in-band blocking in each single-frequency band is transmitted to the first RF adjustable gain amplifier module through a plurality of outlets provided.
The multi-band transceiver of claim 2 or 3, wherein the first RF adjustable gain amplifier module is configured to: for each received single-band RF signal, when the input single-band RF signal is When the signal is blocked, the gain is attenuated. When the input single-band RF signal is a small sensitivity signal, the gain is amplified. The gain-adjusted single-band RF signal is sent to the RF filter module.
The multi-band transceiver of any one of claims 1 to 3, wherein the transmitter comprises:

a second digital processing module configured to process the baseband transmit signal, sample the transmitted baseband signal, and convert the frequency to an intermediate frequency signal;

The second intermediate frequency filter module is configured to filter out spurious signals other than the intermediate frequency band of the intermediate frequency signal, and send the filtered intermediate frequency signal to the second frequency conversion module;

a second local oscillation module: configured to provide a second local oscillation signal for the second frequency conversion module;

a second frequency conversion module configured to: convert the intermediate frequency signal input by the second intermediate frequency filter module to a single frequency band RF signal, and send the signal to the second RF adjustable gain amplifier module;

a second RF adjustable gain amplifier module configured to place a transmitted single-band RF signal Large or attenuated, output to the combiner module;

The combiner module is configured to combine the single-band RF signals output by the second RF adjustable gain amplifier, and output one multi-band RF signal to the broadband power amplifier module;

The broadband power amplifier module is configured to perform power amplification on the multi-band RF signal output by the combiner, so that the output multi-band RF signal reaches the power required by the system.
A method for transmitting multi-band radio frequency signals, the method comprising:

Combining multiple downlink single-band signals sent by the base station into one downlink multi-band RF signal and performing power amplification;

The power-amplified downlink multi-band RF signal is filtered out of the out-of-band interference signal or the spurious signal;

The downlink multi-band RF signal after the out-of-band interference signal or the spurious signal is filtered out.
The method of claim 6, wherein the combining the multiple downlink single-band signals into one downlink multi-band RF signal and performing power amplification comprises:

The baseband transmit signal is processed, and the transmitted baseband signal is sampled and converted into an intermediate frequency signal;

Filtering out spurious signals outside the intermediate frequency band of the intermediate frequency signal;

Converting the intermediate frequency signal of the spurious signal filtered out of the intermediate frequency band to the single-band radio frequency signal according to the preset second local oscillation signal;

Amplifying or attenuating the single-band radio frequency signal obtained by the frequency conversion;

Combining the amplified or attenuated single-band RF signals to obtain one multi-band RF signal;

The obtained multi-band RF signal is power amplified so that the output multi-band RF signal reaches the power required by the system.
A method for receiving multi-band radio frequency signals, the method comprising:

Receiving an uplink multi-band radio frequency signal sent by the mobile station;

Filtering outbanded out-of-band interference signals or spurious signals on the received uplink multi-band RF signals;

After the low-noise power amplification of the uplink multi-band RF signal filtering out the out-of-band interference signal or the spurious signal, the multi-band RF signal amplified by the low-noise power is divided into multiple single-band RF signals.
The method of claim 8 wherein said filtering out-of-band interference signals or spurious signals After the low-noise power amplification of the uplink multi-band RF signal, the multi-band RF signal amplified by the low-noise power is divided into multiple single-band RF signals, including:

Performing low-noise power amplification on the received uplink multi-band RF signal that filters out-of-band interference signals or spurious signals;

Receiving the low-noise power amplified uplink multi-band RF signal through an inlet, and separating the received low-noise power amplified uplink multi-band RF signal into multiple single-band RF signals, and transmitting through multiple outlets;

Performing gain adjustment on each of the single-band radio frequency signals transmitted;

The gain-adjusted single-band RF signal self-transmitting channel performs noise suppression on the received frequency band of the uplink multi-band RF signal except the own frequency band;

Converting each filtered single-band RF signal to a single-band intermediate frequency signal according to a preset first local oscillation signal;

The frequency-amplified single-band IF signal is amplified or attenuated;

Filtering the combined frequency spurious signals introduced by the variable frequency amplification or attenuation of the single-band intermediate frequency signal to the intermediate frequency conversion;

The single-band intermediate frequency signal filtered by the combined frequency spurious signal is sampled, and the single-band intermediate frequency signal is converted from an analog signal to a baseband digital signal, and digital signal processing is performed.
The method of claim 9, wherein the separating the received low-noise power amplified uplink multi-band RF signal into multiple single-band RF signals comprises:

Each single frequency band amplified by the received low noise power is divided into multiple single frequency band RF signals capable of suppressing the outband blocking of other single frequency bands to the level of in-band blocking in each single frequency band.
The method of claim 10, wherein said separately performing gain adjustment on each of said single-band radio frequency signals comprises:

When the single-band radio frequency signal is a large blocking signal, gain attenuation is performed; when the single-band radio frequency signal is a small sensitivity signal, gain amplification is performed.