CN113992224A - Sub-6G-LTCC radio frequency front end microsystem module - Google Patents
Sub-6G-LTCC radio frequency front end microsystem module Download PDFInfo
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- CN113992224A CN113992224A CN202111209728.1A CN202111209728A CN113992224A CN 113992224 A CN113992224 A CN 113992224A CN 202111209728 A CN202111209728 A CN 202111209728A CN 113992224 A CN113992224 A CN 113992224A
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- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
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Abstract
The invention discloses a Sub-6G-LTCC radio frequency front end microsystem module, which is characterized in that: the antenna comprises an antenna module, a radio frequency circuit module and a power supply module. The radio frequency circuit module comprises a low noise amplifier, a frequency mixing module, an intermediate frequency filter and an intermediate frequency room amplifier which are sequentially connected; the low-noise amplifier is used for amplifying radio-frequency signals, and the mixing module is used for reducing the radio-frequency signals amplified by the low-noise amplifier to intermediate frequency; and the intermediate frequency filter processes and filters the generated intermediate frequency signal to obtain a clean intermediate frequency signal. The standardization of the 5G module is realized by the system design of the antenna and the radio frequency front-end module, and the radio frequency circuit module is infinitely close to the antenna, so that weak signals received by the antenna can be directly converted into intermediate frequency signals which can be processed through the module. Therefore, the use of the radio frequency cable between the antenna and the radio frequency circuit is reduced, and the signal loss can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a Sub-6G-LTCC radio frequency front end microsystem module.
Background
With the rapid development of mobile communication technology, various communication services appear in daily life, and a communication front-end module as a key part of a mobile phone is developed towards miniaturization, multiple frequency bands, multiple modules, high performance, low cost and the like. The low temperature co-fired ceramic (lowtemperature co-fired ceramic ltcc) technology becomes one of the preferred ways to modularize the communication front end containing a large number of passive devices due to its multilayer three-dimensional wiring characteristics and good mechanical and thermodynamic characteristics.
Sub6G is the spectral region currently used primarily by 5G. The 5G mobile communication segment is divided according to the Ministry of industry and communications in China, the frequency bands mainly used at present are an S band and a C band, and the frequencies of the two frequency bands are higher. At such high frequencies, the transmission loss of the signal in the antenna and the feeder of the radio frequency system is much larger than that of the low frequency band, which has a great influence on the transmission of the signal.
Disclosure of Invention
The invention aims to provide a Sub-6G-LTCC radio frequency front end micro-system module, which realizes the standardization of a 5G module by designing a system of an antenna and a radio frequency front end module, enables a radio frequency circuit module to be infinitely close to the antenna, and enables weak signals received by the antenna to be directly converted into intermediate frequency signals capable of being processed through the module. Therefore, the use of the radio frequency cable between the antenna and the radio frequency circuit is reduced, so that the signal loss can be effectively reduced, and the technical problem existing in the background technology is solved.
The invention discloses a Sub-6G-LTCC radio frequency front end microsystem module, which comprises an antenna module, a radio frequency circuit module and a power supply module, wherein the antenna module is connected with the radio frequency circuit module;
the radio frequency circuit module comprises a low noise amplifier, a frequency mixing module, an intermediate frequency filter and an intermediate frequency room amplifier which are sequentially connected; the low-noise amplifier is used for amplifying radio-frequency signals, and the mixing module is used for reducing the radio-frequency signals amplified by the low-noise amplifier to intermediate frequency; and the intermediate frequency filter processes and filters the generated intermediate frequency signal to obtain a clean intermediate frequency signal.
In a preferred embodiment, the frequency mixing module includes a down-conversion module and a local oscillation module, and the local oscillation module transmits a local oscillation signal to mix with the radio frequency signal transmitted to the down-conversion module and mix the radio frequency signal down to an intermediate frequency signal.
In a preferred embodiment, the local oscillator signal is generated by a phase-locked loop circuit, and the phase-locked loop circuit includes a frequency divider, a phase discriminator, a loop filter, and a voltage-controlled oscillator, which are connected in sequence.
In a preferred embodiment, the process of generating the local oscillator signal by the lock loop circuit is as follows:
a1, inputting a reference frequency fosc to the phase-locked loop circuit;
a2, pre-dividing the reference frequency fosc by a frequency divider to obtain a new frequency fref;
a3, a new frequency fref enters the phase discriminator and is compared with a signal frequency fbacf fed back to the phase discriminator by the voltage-controlled oscillator, if the difference between the output frequency and the expected frequency is large, a phase difference is generated, and the phase difference can generate a voltage signal;
a4, removing stray through a loop filter, entering a control voltage-controlled oscillator to control voltage signal output, continuously returning to a phase discriminator to perform phase comparison with a reference frequency after obtaining a new output frequency, and repeatedly obtaining and outputting an expected local oscillation frequency signal fout.
In a preferred embodiment, the low noise amplifier is a QPL9530 chip; the frequency mixer is an LTC5510 chip; the intermediate frequency amplifier is an ADL5531 chip; the power supply module is an R1173D001D _ TR-Fd chip.
The technical scheme of the invention has the beneficial effects that:
1. by combining the antenna with the radio frequency circuit, the signal is received from the antenna, the amplification of the signal power is completed through the radio frequency circuit module, the down-conversion and the amplification processing of the intermediate frequency signal are completed through the radio frequency circuit module and the local oscillation signal, and finally, an available intermediate frequency signal is output, so that the signal transmission strength is ensured, and the signal transmission loss is reduced.
2. The low noise amplifier is a QPL9530 chip; the frequency mixer is an LTC5510 chip; the intermediate frequency amplifier is an ADL5531 chip; the power supply module is an R1173D001D _ TR-Fd chip. And the working stability of each module is ensured through strict chip selection.
Drawings
Figure 1 is a diagram of a collation module of the present invention,
figure 2 is a touch diagram of the rf circuit of the present invention,
fig. 3 is a flow chart of the vibration signal acquisition of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Referring to fig. 1 to fig. 3, a Sub-6G-LTCC radio frequency front end microsystem module according to the technical solution of the present invention includes an antenna module, a radio frequency circuit module and a power supply module. The radio frequency circuit module comprises a low noise amplifier, a frequency mixing module, an intermediate frequency filter and an intermediate frequency room amplifier which are sequentially connected.
The low noise amplifier is used for amplifying radio frequency signals; the frequency mixing module is used for reducing the radio frequency signals amplified by the low noise amplifier to intermediate frequency, and the intermediate frequency filter processes and filters the generated intermediate frequency signals to obtain clean intermediate frequency signals, so that subsequent processing can be better performed. The intermediate frequency signal has low frequency, flat passband characteristic, can better obtain the required signal, and has enough adjacent channel rejection capability.
In the scheme, the radio frequency circuit module is infinitely close to the antenna, so that weak signals received by the antenna can be directly converted into intermediate frequency signals which can be processed through the module. Therefore, the use of the radio frequency cable between the antenna and the radio frequency circuit is reduced, and the signal loss can be effectively reduced.
The frequency mixing module comprises a down-conversion module and a local oscillator module, wherein the local oscillator module transmits a local oscillator signal to be mixed with the radio frequency signal transmitted to the down-conversion module, and the radio frequency signal is mixed and reduced to an intermediate frequency signal. The local oscillator signal is generated through a phase-locked loop circuit, and the phase-locked loop circuit comprises a frequency divider, a phase discriminator, a loop filter and a voltage-controlled oscillator which are connected in sequence.
The process of the lock loop circuit generating the local oscillation signal is as follows: a1, inputting a reference frequency fosc to the phase-locked loop circuit; a2, pre-dividing the reference frequency fosc by a frequency divider to obtain a new frequency fref; a3, a new frequency fref enters the phase discriminator and is compared with a signal frequency fbacf fed back to the phase discriminator by the voltage-controlled oscillator, if the difference between the output frequency and the expected frequency is large, a phase difference is generated, and the phase difference can generate a voltage signal; a4, removing stray through a loop filter, entering a control voltage-controlled oscillator to control voltage signal output, continuously returning to a phase discriminator to perform phase comparison with a reference frequency after obtaining a new output frequency, and repeatedly obtaining and outputting an expected local oscillation frequency signal fout.
The voltage-controlled oscillator is controlled by voltage and is used for generating an oscillation signal, and the output frequency of the voltage-controlled oscillator is increased along with the increase of the voltage; the frequency divider is used for reducing the frequency generated by the voltage-controlled oscillator through frequency division so as to carry out subsequent work; the phase discriminator is used for comparing the reference frequency with the frequency after frequency division and generating corresponding voltage according to the phase difference of the two frequencies so as to control the output of the voltage-controlled oscillator; the loop filter carries out filtering processing on the voltage generated by the phase discriminator so as to provide stable control for a subsequent circuit.
The low noise amplifier is a QPL9530 chip. The chip has low noise characteristic and large enough linear range, and can not be distorted in the signal amplification process, and meanwhile, the self-excitation phenomenon of the circuit can not occur in the signal amplification process.
The frequency mixer is an LTC5510 chip; the intermediate frequency amplifier is an ADL5531 chip. The power supply module is an R1173D001D _ TR-Fd chip. The LDO structure is adopted to supply power for each module of the system by 5V, and the LDO structure is mainly used for a low noise amplifier chip, a mixer chip and an intermediate frequency amplifier chip, 5V supplied by a power supply is reduced to 3.3V by utilizing the LDO power supply module, the voltage output is ensured to be stable, and 3.3V is mainly used for supplying power for a phase-locked loop chip.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.
Claims (5)
1. A Sub-6G-LTCC radio frequency front end microsystem module is characterized in that: the antenna comprises an antenna module, a radio frequency circuit module and a power supply module;
the radio frequency circuit module comprises a low noise amplifier, a frequency mixing module, an intermediate frequency filter and an intermediate frequency room amplifier which are sequentially connected; the low-noise amplifier is used for amplifying radio-frequency signals, and the mixing module is used for reducing the radio-frequency signals amplified by the low-noise amplifier to intermediate frequency; and the intermediate frequency filter processes and filters the generated intermediate frequency signal to obtain a clean intermediate frequency signal.
2. A Sub-6G-LTCC rf front end microsystem module as claimed in claim 1, wherein: the frequency mixing module comprises a down-conversion module and a local oscillator module, wherein the local oscillator module transmits a local oscillator signal to be mixed with the radio frequency signal transmitted to the down-conversion module, and the radio frequency signal is mixed and reduced to an intermediate frequency signal.
3. A Sub-6G-LTCC rf front end microsystem module as claimed in claim 2, wherein: the local oscillator signal is generated through a phase-locked loop circuit, and the phase-locked loop circuit comprises a frequency divider, a phase discriminator, a loop filter and a voltage-controlled oscillator which are connected in sequence.
4. A Sub-6G-LTCC rf front end microsystem module as claimed in claim 3, wherein: the process of the lock loop circuit generating the local oscillation signal is as follows:
a1, inputting a reference frequency fosc to the phase-locked loop circuit;
a2, pre-dividing the reference frequency fosc by a frequency divider to obtain a new frequency fref;
a3, a new frequency fref enters the phase discriminator and is compared with a signal frequency fbacf fed back to the phase discriminator by the voltage-controlled oscillator, if the difference between the output frequency and the expected frequency is large, a phase difference is generated, and the phase difference can generate a voltage signal;
a4, removing stray through a loop filter, entering a control voltage-controlled oscillator to control voltage signal output, continuously returning to a phase discriminator to perform phase comparison with a reference frequency after obtaining a new output frequency, and repeatedly obtaining and outputting an expected local oscillation frequency signal fout.
5. A Sub-6G-LTCC rf front end microsystem module as claimed in claim 1, wherein: the low noise amplifier is a QPL9530 chip; the frequency mixer is an LTC5510 chip; the intermediate frequency amplifier is an ADL5531 chip; the power supply module is an R1173D001D _ TR-Fd chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111209728.1A CN113992224A (en) | 2021-10-18 | 2021-10-18 | Sub-6G-LTCC radio frequency front end microsystem module |
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| CN202111209728.1A CN113992224A (en) | 2021-10-18 | 2021-10-18 | Sub-6G-LTCC radio frequency front end microsystem module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115133945A (en) * | 2022-05-11 | 2022-09-30 | 深圳市有方科技股份有限公司 | Signal processing device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403898A (en) * | 2015-12-03 | 2016-03-16 | 天津七六四通信导航技术有限公司 | Radio frequency receiving channel circuit for realizing anti-interference antenna of satellite navigation and method |
| CN208849755U (en) * | 2018-07-28 | 2019-05-10 | 上海航天电子有限公司 | Radio-frequency front-end based on LTCC |
| CN112994725A (en) * | 2021-01-20 | 2021-06-18 | 广州市中海达测绘仪器有限公司 | High-power data transmission radio station device |
-
2021
- 2021-10-18 CN CN202111209728.1A patent/CN113992224A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403898A (en) * | 2015-12-03 | 2016-03-16 | 天津七六四通信导航技术有限公司 | Radio frequency receiving channel circuit for realizing anti-interference antenna of satellite navigation and method |
| CN208849755U (en) * | 2018-07-28 | 2019-05-10 | 上海航天电子有限公司 | Radio-frequency front-end based on LTCC |
| CN112994725A (en) * | 2021-01-20 | 2021-06-18 | 广州市中海达测绘仪器有限公司 | High-power data transmission radio station device |
Non-Patent Citations (1)
| Title |
|---|
| 柳现发等: "一种高集成LTCC射频前端电路", 《微纳电子技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115133945A (en) * | 2022-05-11 | 2022-09-30 | 深圳市有方科技股份有限公司 | Signal processing device and method |
| CN115133945B (en) * | 2022-05-11 | 2024-04-12 | 东莞有方物联网科技有限公司 | Signal processing device and method |
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