CN215344571U

CN215344571U - Four-multiplexer applied to carrier aggregation

Info

Publication number: CN215344571U
Application number: CN202120591996.3U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shanghai Sinbo Electronic Technology Co ltd
Current assignee: Shanghai Sinbo Electronic Technology Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-12-28
Anticipated expiration: 2031-03-23

Abstract

The utility model relates to a quadruplex multiplexer applied to carrier aggregation, which comprises a first duplexer, a second duplexer and a diplexer; the first duplexer and the second duplexer are respectively connected with the diplexer; the first duplexer is used for filtering TX and RX radio frequency signals of a Band _ A frequency Band; a second duplexer for filtering TX and RX radio frequency signals of a Band _ B frequency Band; the diplexer is used for filtering Band _ A and Band _ B frequency Band radio frequency signals; one end of the antenna multiplexer is connected with a data processing center, the other end of the antenna multiplexer is connected with an antenna, and the data processing center is used for storing data and signal coding and decoding and controlling signal transmitting and receiving; the antenna is used for converting the electric signal into an electromagnetic wave signal, transmitting the electromagnetic wave signal into a space and receiving a weak electromagnetic wave signal from the space.

Description

Four-multiplexer applied to carrier aggregation

Technical Field

The utility model belongs to the technical field of acoustic filter and SIP packaging, and particularly relates to a four-multiplexer applied to carrier aggregation.

Background

SIP (System In a Package) is a packaging scheme that integrates multiple functional wafers, including functional wafers such as processors and memories, into one Package according to factors such as application scenarios and the number of layers of a Package substrate, thereby achieving a basic complete function. SIP packaging is an electronic device packaging scheme, which integrates multiple functional chips, including processors, memories, etc., into one package, thereby implementing a substantially complete function.

With the addition of new 5G bands and requirements (e.g., 4x4 multiple input/multiple output (MIMO), dual connectivity between universal terrestrial radio access (E-UTRA) and New Radio (NR), mmWave) and the emergence of emerging standards (e.g., UWB), the 5G radio frequency complexity has increased dramatically. Operators are working on CA and MIMO (multiple input/multiple output) technologies to increase capacity and data downlink/uplink speed.

5G needs to support more frequency bands (including n41, n77, n78, etc.). In order to increase data capacity and data downlink/uplink speed, demands for multiple frequency band Carrier Aggregation (CA) and MIMO (multiple input/multiple output) have been rapidly increased.

The 5G handset must also continue to support all existing and reassigned low, mid, and high band frequencies of the 4G handset, as well as other requirements, such as GPS Level 5(L5), GPS/GNSS, 2.4GHz, and 5 to 7GHz Wi-Fi (Wi-Fi 6E). The challenge of increasing the number of antennas in a handset is that the metal frame and the smaller bezel, glass back, and bezel-less or surrounding screen limit the available area for the antenna. Secondly, the functions of the mobile phone are increased for attracting consumers, and the space which can be distributed to the RFFE and the antenna is reduced.

The Film Bulk Acoustic Resonator (FBAR) duplexer has a compact structure, is light-weight, can be mass-produced by a semiconductor process, and is easily coupled to a Monolithic Microwave Integrated Circuit (MMIC) because it can freely couple radio frequency active elements.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a quadruplex applied to carrier aggregation, which solves the requirements of Carrier Aggregation (CA) and MIMO (multi-input/multi-output) of multiple frequency bands in the 5G era, effectively improves the data capacity and the data downlink/uplink speed, increases the number of frequency bands capable of sharing a single antenna, effectively reduces the number of antennas and reduces the space occupied by the antennas.

The utility model provides a quadruplex multiplexer applied to carrier aggregation, wherein an antenna multiplexer comprises a first duplexer, a second duplexer and a diplexer;

the first duplexer and the second duplexer are respectively connected with the diplexer;

the first duplexer is used for filtering TX and RX radio frequency signals of a Band _ A frequency Band;

the second duplexer is used for filtering TX and RX radio frequency signals of a Band _ B frequency Band;

the diplexer is used for filtering Band _ A and Band _ B frequency Band radio frequency signals;

one end of the antenna multiplexer is connected with a data processing center, the other end of the antenna multiplexer is connected with an antenna, and the data processing center is used for storing data and signal coding and decoding and controlling signal transmitting and receiving; the antenna is used for converting the electric signal into an electromagnetic wave signal, transmitting the electromagnetic wave signal into a space and receiving a weak electromagnetic wave signal from the space.

In an embodiment of the present invention, the first duplexer includes two FBAR filters integrated into a Band _ a Band, i.e., a first filter and a second filter, and further includes a phase shifter, and the phase shifter connects the first filter and the second filter.

According to one technical scheme, one end of the first filter is connected with a chip pin pad _4, and a TX radio frequency signal from the data processing center is filtered; one end of the second filter is connected with a chip pin pad _5, and the second filter filters RX radio frequency signals coming out of the data processing center.

In one aspect of the present invention, the phase shifter includes a capacitor and an inductor, and prevents mutual interference by introducing a phase difference of 90 degrees between frequencies of the transmission signal and the reception signal.

In an embodiment of the present invention, the second duplexer further includes two integrated Band _ B Band FBAR filters, i.e., a third filter and a fourth filter, and the second duplexer further includes a phase shifter, and the phase shifter connects the third filter and the fourth filter.

According to the technical scheme, one end of the third filter is connected with a chip pin pad _7, and a TX radio-frequency signal from the data processing center is filtered; one end of the fourth filter is connected with a chip pin pad _6, and the RX radio frequency signal coming out of the data processing center is filtered.

In a technical solution of the present invention, it is further configured that the diplexer includes two filters respectively configured to filter Band _ a and Band _ B Band radio frequency signals, the diplexer is connected to a common terminal of the first diplexer and a common terminal of the second diplexer, and the common terminal of the diplexer is connected to the antenna through a chip pin pad _ 8.

In one embodiment of the present invention, the port of the antenna is further configured to be matched to 50 Ω.

The utility model has the beneficial effects that:

(1) the utility model combines two Film Bulk Acoustic Resonator (FBAR) duplexers and an antenna duplexer together to form a quadruplex device by an SIP process. The multiplexer can realize Carrier Aggregation (CA) and MIMO (multiple input/multiple output) of multiple frequency bands by aggregating the multiple frequency bands into a single antenna path, effectively improve data capacity and data downlink/uplink speed, meet the development of 5G mobile internet, and solve the requirements of various mobile phones and panels on network speed and flow.

(2) According to the utility model, a plurality of RF duplexers form the multiplexer through the SIP process, so that the number of required single filters is reduced, and the limited space is saved; while supporting different radio technologies (cellular, Wi-Fi, GPS, UWB) and thus increasing the number of frequency bands that can share a single antenna. The mobile phone can more effectively utilize the area of the existing antenna, meanwhile, the support for a new frequency band is added, and the existing overall dimension or function is not influenced.

Drawings

Fig. 1 is a circuit diagram of a quad-multiplexer applied to carrier aggregation according to the present invention;

fig. 2 is an internal circuit of a quad-multiplexer applied to carrier aggregation according to the present invention.

The reference numerals in the schematic drawings illustrate:

a data processing center; 1. a data processing center; 2. an antenna multiplexer; 3. an antenna; 4. band _ A TX; 5. band _ A RX; 6. band _ B RX; 7. band _ B TX; 8. a port; 9. a diplexer; 11. A first duplexer; 12. a second duplexer; 13. a first filter; 14. a second filter; 15. a third filter; 16. a fourth filter; 17. a first phase shifter; 18. a second phase shifter.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided for the purpose of providing a more thorough disclosure of the utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

FBAR filters are short for film bulk acoustic resonator filters, translated as film bulk acoustic resonator filters, which are manufactured using silicon backplanes by means of the mems technology and the film technology, unlike previous filters.

SIP (System In a Package) is a packaging scheme that integrates multiple functional wafers, including functional wafers such as processors and memories, into one Package according to factors such as application scenarios and the number of layers of a Package substrate, thereby achieving a basic complete function.

The duplexer referred to in the present invention is a diplexer.

Examples

Referring to fig. 1 and 2, in the quad-multiplexer applied to carrier aggregation provided by the present invention, the antenna multiplexer 2 includes a first duplexer 11, a second duplexer 12, and a diplexer 9; the lead-to-duplexer is a three-port radio frequency device, and comprises two filters which are respectively used for filtering radio frequency signals in Band _ A and Band _ B frequency bands. The frequency division function of a high-pass filter, a low-pass filter or a band-pass filter can be utilized, so that the same antenna 3 or a transmission line can be used for two signal paths, and the same antenna 3 can receive and transmit signals with two different frequencies. In order to function properly, the quality and attenuation of the filters used must be matched to the operating power levels of the two signals and the required non-linearity.

The first duplexer 11 and the second duplexer 12 are respectively connected with the diplexer 9;

a first duplexer 11 for filtering TX and RX radio frequency signals of the Band _ a Band;

a second duplexer 12 for filtering TX and RX radio frequency signals of the Band _ B Band;

the diplexer 9 is used for filtering Band _ A and Band _ B frequency Band radio frequency signals;

one end of the antenna multiplexer 2 is connected with a data processing center 1, the other end of the antenna multiplexer is connected with an antenna 3, and the data processing center 1 is used for storing data and signal coding and decoding and controlling signal transmitting and receiving; the antenna 3 is used for converting the electric signal into an electromagnetic wave signal, transmitting the electromagnetic wave signal into the space and receiving a weak electromagnetic wave signal from the space. Wherein, the TX and RX radio frequency signals of the Band _ A frequency Band are Band _ A TX 4 and Band _ A RX 5; TX and RX radio frequency signals of the Band _ B Band are Band _ B RX 6, Band _ B TX 7.

Preferably, the first duplexer 11 includes two FBAR filters integrated into a Band _ a Band, i.e., a first filter 13 and a second filter 14, and the first duplexer 11 further includes a first phase shifter 17, and the first phase shifter 17 connects the first filter 13 and the second filter 14. The first filter 13 and the second filter 14 are connected to each other by a first phase shifter 17, and since the frequency difference between the signals transmitted and received by the transmitting filter and the receiving filter is small, the signals affect each other to generate interference. Therefore, the transmission filter and the reception are isolated by the phase shifter and shielded from each other, thereby preventing mutual interference.

One end of the first filter 13 is connected to the chip pin pad _4, and filters a TX radio frequency signal from the data processing center 1; one end of the second filter 14 is connected to the chip pin pad _5, and filters the RX radio frequency signal from the data processing center 1.

Specifically, the phase shifter includes a capacitance and an inductance, and prevents mutual interference by introducing a phase difference of 90 degrees between the frequencies of the transmission signal and the reception signal. Specifically, two inductors are connected in series, a capacitor is connected in parallel in the middle, and a circuit with 90-degree phase shift is formed by different inductance values and capacitance values.

Specifically, the second duplexer 12 includes two FBAR filters integrated in Band _ B Band, i.e., a third filter 15 and a fourth filter 16, and the second duplexer 12 further includes a second phase shifter 18, and the second phase shifter 18 connects the third filter 15 and the fourth filter 16.

In addition, one end of the third filter 15 is connected to the chip pin pad _7, and filters the TX radio frequency signal from the data processing center 1; one end of the fourth filter 16 is connected to the chip pin pad _6, and filters the RX radio frequency signal from the data processing center 1.

Further, the diplexer 9 includes two filters for filtering Band _ a and Band _ B Band radio frequency signals, the diplexer 9 is connected to the common terminal of the first diplexer 11 and the common terminal of the second diplexer 12, and the common terminal of the diplexer 9 is connected to the antenna 3 through the chip pin pad _ 8.

In detail, the port 8 of the antenna 3 is matched to 50 Ω, so that the antenna reflection coefficient is reduced, and the antenna efficiency is improved.

Compared with the traditional method, the utility model has the beneficial effects that: two Film Bulk Acoustic Resonator (FBAR) duplexers and an antenna duplexer are combined together by an SIP process to constitute a quad-multiplexer. The multiplexer can realize Carrier Aggregation (CA) by aggregating a plurality of frequency bands into a single antenna 3 path, thereby meeting the development of 5G mobile internet, solving the requirements of various mobile phones and panels on network speed and flow, simultaneously increasing the number of frequency bands capable of sharing a single antenna 3, effectively reducing the number of the antennas 3 and reducing the space occupied by the antennas 3.

The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which are within the protection scope of the present invention; therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A quadruplex ware is applied to carrier aggregation, characterized in that, the antenna multiplexer comprises a first duplexer, a second duplexer and a diplexer;

2. The quad-multiplexer applied to carrier aggregation according to claim 1, wherein the first duplexer comprises two integrated Band-a Band FBAR filters, a first filter and a second filter, and further comprises a first phase shifter connecting the first filter and the second filter.

3. The quad-multiplexer for carrier aggregation according to claim 2, wherein one end of the first filter is connected to a chip pin pad _4, and is configured to filter the TX rf signal from the data processing center; one end of the second filter is connected with a chip pin pad _5, and the second filter filters RX radio frequency signals coming out of the data processing center.

4. The quad-multiplexer applied to carrier aggregation according to claim 3, wherein the first phase shifter comprises a capacitor and an inductor, and mutual interference is prevented by introducing a phase difference of 90 degrees between frequencies of the transmission signal and the reception signal.

5. The quad-multiplexer applied to carrier aggregation according to claim 1, wherein the second duplexer comprises two integrated Band-B Band FBAR filters, a third filter and a fourth filter, and further comprises a second phase shifter connecting the third filter and the fourth filter.

6. The quad-multiplexer for carrier aggregation according to claim 5, wherein one end of the third filter is connected to a chip pin pad _7, and is configured to filter the TX rf signal from the data processing center; one end of the fourth filter is connected with a chip pin pad _6, and the RX radio frequency signal coming out of the data processing center is filtered.

7. The quad-multiplexer applied to carrier aggregation according to claim 1, wherein the diplexer comprises two filters for filtering Band _ a and Band _ B Band rf signals, the diplexer is connected to a common terminal of the first diplexer and the second diplexer, and the common terminal of the diplexer is connected to the antenna through a chip pin pad _ 8.

8. The quad-multiplexer applied to carrier aggregation according to claim 7, wherein the ports of the antennas are matched to 50 Ω.