Radio frequency antenna

Abstract

The utility model relates to the field of wireless communication, in particular to a radio frequency antenna. Comprising an antenna module which comprises a first antenna, a second antenna and a third antenna; wherein the first antenna is a medium and high frequency band carrier aggregation antenna MHB CA ANT, the second antenna is a low, medium and high frequency band LMHB main set antenna, and the third antenna is an LMHB diversity antenna; and the radio frequency module is connected with each antenna in the antenna module so as to transmit and receive signals through at least one antenna in the first antenna, the second antenna and the third antenna.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless communication, in particular to a radio frequency antenna. BACKGROUND

[0002] With the popularization of 4G LTE Advanced and 5G networks, carrier aggregation (CA) as a key technology to improve data transmission rate and spectral efficiency has received widespread attention. CA combines multiple independent frequency carriers into a wider virtual carrier, thereby significantly improving data throughput. This technology not only enhances user experience, especially in high-bandwidth applications such as high-definition video streaming and online gaming, but also allows operators to flexibly utilize different frequency band resources for optimized combination, improving network coverage and capacity. To meet these needs, modern terminal devices such as smartphones and tablets face new design challenges, and a common solution is to split the main set antenna low band (LB). For devices supporting CA, the LB must be split to ensure that CA can work normally. However, the conventional design method has high design cost, and it is important to provide a new design to reduce the design cost of the radio frequency system. CONTENT OF THE UTILITY MODEL

[0003] The embodiments of the present application disclose a radio frequency antenna, which can separately design a middle-high frequency antenna in the design of the radio frequency antenna, for the implementation of CA function, thereby reducing the design cost.

[0004] To achieve the above purpose, the first aspect of the embodiments of the present application discloses a radio frequency antenna, comprising:

[0005] An antenna module, the antenna module comprising a first antenna, a second antenna and a third antenna; wherein the first antenna is a middle-high frequency carrier aggregation antenna MHB CA ANT, the second antenna is a low-middle-high frequency band LMHB main set antenna, and the third antenna is a LMHB diversity antenna;

[0006] A radio frequency module is connected to each antenna in the antenna module to perform signal transceiving through at least one of the first antenna, the second antenna and the third antenna.

[0007] In some embodiments, the radio frequency module comprises a power amplifier PA, a single-pole double-throw SP2T switch and a duplexer; and the antenna module further comprises a transmit model Tx-mode, wherein:

[0008] The duplexer is connected to the PA and the static contact of the SP2T switch respectively, the first movable contact of the SP2T switch is connected to the Tx-mode, and the second movable contact of the SP2T switch is connected to the first antenna;

[0009] The Tx-mode is also connected to the second antenna and the third antenna respectively.

[0010] In some embodiments, the Tx-mode is a single-port Tx-mode, the single-port Tx-mode includes a first end, the first end is configured with a single port, and the antenna module further includes: a single-pole four-throw SP4T switch, wherein:

[0011] The static contact of the SP4T switch is connected to the first end of the single-port Tx-mode, and the first movable contact of the SP4T switch is connected to the first antenna, so that the first antenna is connected to the single-port Tx-mode through the first movable contact and the static contact.

[0012] In some embodiments, the single-port Tx-mode further includes a second end, wherein the second end is provided with a plurality of ports; the duplexer includes a high-band HB duplexer and a mid-band MB duplexer, wherein:

[0013] The first port of the HB duplexer is connected to the first sub-port of the second end of the single-port Tx-mode, and the second port of the HB duplexer is connected to the transceiver connected to the RF antenna;

[0014] The first port of the MB duplexer is connected to the second sub-port of the second end of the single-port Tx-mode, and the second port of the MB duplexer is connected to the transceiver.

[0015] In some embodiments, the antenna module further comprises: a single-pole eight-throw SP8T switch, a combiner, and a double-pole double-throw switch, wherein:

[0016] The combiner comprises a first end and a second end, the first end of the combiner is provided with a plurality of ports, and the second end of the combiner is provided with a single port;

[0017] The first sub-port of the first end of the combiner is connected to the second moving contact of the SP4T switch, and the second sub-port of the first end of the combiner is connected to the static contact of the SP8T switch;

[0018] The second end of the combiner is connected to the first static contact of the double-pole double-throw switch; the first moving contact of the double-pole double-throw switch is connected to the second antenna, and the second moving contact of the double-pole double-throw switch is connected to the third antenna.

[0019] In some embodiments, the SP2T switch includes a first SP2T switch and a second SP2T switch, wherein:

[0020] The first movable contact of the SP8T switch is connected to the second movable contact of the first SP2T switch, the first port of the HB duplexer is connected to the static contact of the first SP2T switch, and the third port of the HB duplexer is connected to the HB port of the PA;

[0021] The second moving contact of the SP8T switch is connected to the second moving contact of the second SP2T switch, the first port of the MB duplexer is connected to the static contact of the second SP2T switch, and the third port of the MB duplexer is connected to the MB port of the PA.

[0022] In some embodiments, the RF module further includes a filter, and the SP2T switch further includes a third SP2T switch, wherein:

[0023] The first port of the filter is connected to the HB port of the PA, and the second port of the filter is connected to the static contact of the third SP2T switch.

[0024] In some embodiments, the first antenna is disposed between the second antenna and the third antenna.

[0025] In some embodiments, the second antenna is symmetrically arranged with respect to the third antenna.

[0026] In some embodiments, the antenna module is connected to the RF module via a spring clip.

[0027] Compared with the prior art, the embodiments of the present application have at least the following beneficial effects:

[0028] The radio frequency antenna proposed in the example of this application includes: an antenna module, wherein the antenna module includes a first antenna, a second antenna, and a third antenna; wherein the first antenna is a mid-high band carrier aggregation antenna MHB CAANT, the second antenna is a low-mid-high band LMHB main aggregation antenna, and the third antenna is a LMHB diversity antenna; the radio frequency module is connected to each antenna in the antenna module to transmit and receive signals through at least one of the first antenna, the second antenna, and the third antenna. The embodiment of this application separately designs an antenna for the carrier aggregation function, making its structure simpler and further improving the performance of the radio frequency antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 This is a schematic diagram of a radio frequency antenna structure provided in an embodiment of the present application;

[0031] Figure 2 This is a simplified version of an antenna layout diagram provided in an embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of a radio frequency antenna structure provided in an embodiment of the present application (simplified version);

[0033] Figure 4 This is a schematic diagram of a radio frequency antenna structure provided by the relevant technology (simplified version);

[0034] Figure 5 This is a structural diagram (simplified version) of another radio frequency antenna provided by the related art;

[0035] Figure 6 This is a structural diagram (simplified version) of another radio frequency antenna provided in an embodiment of the present application;

[0036] Figure 7 This is a schematic block diagram of an electronic device provided in an embodiment of the present application.

[0037] Explanation of main reference numerals: 101-RF module, 102-antenna module, 201-first antenna, 202-second antenna, 203-third antenna, 301-LB antenna, 302-MHB antenna, 1-PA, 2-duplexer, 21-MB duplexer, 211-first MB duplexer, 212-second MB duplexer, 22-HB duplexer, 221-first HB duplexer, 222-second HB duplexer, 23-LB duplexer, 3-quadplexer, 4-TX-mode, 41-single-port TX-mode, 42-dual-port TX-mode, 5-SP2T switch, 51-first SP2T switch, 52-second SP2T switch, 53-third SP2T switch, 6-SP4T switch, 7-SP8T switch, 8-combiner, 9-double-pole double-throw switch, 10-filter. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0040] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0041] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0042] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0043] With the continuous advancement of mobile communications technology, especially the widespread adoption of 4G LTE Advanced and 5G networks, carrier aggregation (CA) has garnered widespread attention as a key technology for improving data transmission rates and spectrum efficiency. CA allows devices (such as smartphones and tablets) to simultaneously use multiple frequency carriers to transmit and receive data, effectively increasing the total available bandwidth and significantly improving the user experience. This technology is particularly important for bandwidth-intensive applications such as high-definition video streaming and online gaming.

[0044] CA achieves higher data throughput by combining two or more independent carrier frequencies into a wider virtual carrier, such as combining two 20MHz carriers into a 40MHz virtual carrier. This technology not only increases bandwidth, but also provides flexibility in frequency band combinations, allowing operators to optimize the combination of resources on low-band, mid-band, and high-band to improve network coverage and capacity. Therefore, carrier aggregation can significantly improve user experience, especially providing a smoother and more unobstructed experience when watching high-bandwidth applications such as high-definition videos and online games. In addition, CA supports multiple deployment modes, including continuous carrier aggregation (aggregation between adjacent frequencies) and non-continuous carrier aggregation (integration between non-adjacent frequencies), which can further enhance network performance and adaptability.

[0045] To meet the requirements of CA technology, modern terminal devices, particularly smartphones and tablets, face new design challenges. First, devices must support multi-band compatibility to ensure proper operation across the wide range of LTE frequency bands used globally. Second, a complex antenna system is essential, often requiring multiple antennas to process signals from different frequency bands, and these antennas must maintain good isolation to prevent mutual interference. Furthermore, due to the size limitations of electronic products, designers must also address the issue of how to optimally position antennas within limited space, while also considering factors such as electromagnetic compatibility, signal quality, and insertion loss. High-performance RF components, such as high-quality power amplifiers and duplexers, are also essential for ensuring stable performance across frequency bands. Finally, at the software level, the operating system and baseband processor must be capable of managing and scheduling multiple carriers, which is an integral part of implementing CA functionality.

[0046] One common solution currently is to split the low-band (LB) portion of the main antenna. This approach decomposes the single main antenna into several relatively independent components, better adapting to the needs of different frequency bands, reducing interference between antennas, and improving overall system efficiency. This split design not only helps overcome physical space limitations but also optimizes signal quality in each frequency band, thereby improving overall terminal performance.

[0047] For devices that support CA, one of the common practices currently is to design them by splitting the main antenna LB. This approach is based on the following considerations:

[0048] First, due to the extremely limited internal space in mobile phones, traditional single-antenna solutions cannot meet the requirements of all frequency bands. Second, by breaking down a single antenna structure into several relatively independent components, the signal quality of each frequency band can be better controlled, thereby reducing the risk of potential interference between them. Finally, a carefully designed multi-antenna configuration not only helps improve overall system performance but also ensures relatively balanced performance across all frequency bands. This split-design approach effectively addresses the issues of space limitations, signal interference, and system efficiency, providing a reliable technical foundation for efficient carrier aggregation.

[0049] However, this conventional design approach also carries high design costs. Therefore, the industry is exploring new design approaches aimed at reducing RF system design costs through innovative antenna technologies and integration solutions, while maintaining or even improving terminal device performance in supporting carrier aggregation. These new approaches may include improvements in materials science, the introduction of reconfigurable antenna technology, optimized antenna placement algorithms, and the development of more efficient RF front-end components.

[0050] In view of this, in order to reduce costs while ensuring system performance, the embodiments of the present application propose a radio frequency antenna design that can be applied to a 4G antenna for mobile phones and tablets.

[0051] like Figure 1 As described above, the radio frequency antenna proposed in the embodiment of the present application includes two modules: a radio frequency module 101 and an antenna module 102 .

[0052] Exemplarily, the antenna module 102 is connected to the RF module 101 via a spring clip. Spring clip (also known as a spring contact or pogo pin) connection is a common electrical connection method between an antenna and a RF module 101.

[0053] The spring connector design provides multiple advantages for the connection between the antenna module 102 and the radio frequency module 101: it can provide stable electrical contact and maintain good connection even in the presence of slight vibration or movement, especially suitable for applications that need to be frequently disassembled or may encounter mechanical stress; the connection is achieved through pressure contact, without the need for welding or other permanent fixation methods, facilitating quick assembly and disassembly during production and maintenance processes; it is small in size and occupies less space, making it very suitable for internal use in compact electronic devices such as smartphones and tablets; the design based on physical contact allows the same spring connector to be reused multiple times, reducing material waste.

[0054] Exemplarily, in the connection method of the antenna and the radio frequency module 101, different methods are suitable for different scenarios and needs. Coaxial cable provides low-loss, high-shielding connection, suitable for situations that require long-distance transmission, widely used in base stations, satellite communications and other environments with high requirements for signal quality. Microstrip or stripline directly makes conductive paths on the circuit board, suitable for short-distance, high-integration designs, commonly used in the internal of portable electronic devices such as mobile phones and tablets, helping to reduce size and cost.

[0055] Exemplarily, the flexible printed circuit board (FPC) has good bending and lightness, making it convenient to wire in a small space, especially suitable for situations in mobile devices where the antenna needs to be placed away from the mainboard.

[0056] Exemplarily, soldering fixes the antenna to the radio frequency module 101 or the circuit board through soldering, forming a firm and stable electrical connection, suitable for environments that do not need frequent disassembly and maintenance, such as small antennas in some Internet of Things devices. These diverse connection methods provide reliable and efficient solutions according to specific application needs.

[0057] In the embodiments of the present application, the connection method of the antenna module 102 and the radio frequency module 101 is not specifically limited and can be selected according to the actual use scenario.

[0058] Among them, the antenna module 102 includes a first antenna 201, a second antenna 202, and a third antenna 203; wherein the first antenna 201 is a medium and high band carrier aggregation antenna (MHB CA ANT), the second antenna 202 is a low, medium and high band (LMHB) main diversity antenna, and the third antenna 203 is a LMHB diversity antenna;

[0059] The MHB CA ANT is an antenna designed to support carrier aggregation technology in modern mobile communication networks. Carrier aggregation is a technology that allows mobile devices to simultaneously utilize multiple frequency bands to increase data transmission rates. It improves overall bandwidth and user experience by combining wireless channels from different frequency bands.

[0060] MHB CAANT generally refers to an antenna system that can support carrier aggregation functions in the mid-band (such as 1.7GHz to 2.7GHz) and high-band (such as 3.3GHz to 4.2GHz or higher) frequency ranges.

[0061] MHB CAANT antennas are uniquely designed to meet the high-performance demands of modern mobile communication networks. They support multiple operating frequency bands within a single unit, providing sufficient bandwidth to meet the requirements of carrier aggregation technology and ensure efficient operation across the combined frequency bands. Their compact design also allows them to adapt to space-constrained applications, such as portable devices like smartphones. Furthermore, they strive for high efficiency and low loss to ensure signal quality and minimize energy loss, improving overall performance. They also offer excellent isolation to prevent interference between frequency bands and maintain clear data transmission. These combined features make MHB CAANT antennas a crucial component in enabling high-speed, high-quality data communication services.

[0062] The RF module 101 is connected to each antenna in the antenna module 102 to transmit and receive signals through at least one of the first antenna 201 , the second antenna 202 , and the third antenna 203 .

[0063] Exemplarily, the second antenna 202 is a main antenna, and the third antenna 203 is a diversity antenna.

[0064] In wireless communication systems, the main antenna and diversity antenna each play different roles, jointly optimizing signal reception quality and overall system performance.

[0065] For example, the main antenna is typically used to transmit and receive the main data stream and is responsible for signal transmission tasks most of the time. Its design considers optimal location and directionality to ensure good signal coverage and transmission quality. The diversity antenna is mainly used to receive signals and improves reception performance through technologies such as spatial diversity, frequency diversity, time diversity, and polarization diversity. When the main antenna is affected by multipath fading, shadowing, or interference, the diversity antenna can provide an independent signal path, thereby increasing signal reliability and stability. The diversity antenna is placed in a different position from the main antenna to reduce correlation. Even if one antenna is in an unfavorable position (such as being blocked by a hand), the other antenna may still receive a better signal. By comparing the signal strength or quality received by the two antennas, the system can select the antenna with the better signal for subsequent processing, thereby improving reception sensitivity, reducing bit error rate, and enhancing the user experience. This combined use helps provide more stable and high-quality communication services in complex and changing wireless environments.

[0066] For example, Figure 2 In the antenna layout diagram of the embodiment of the present application shown, the first antenna can be arranged between the second antenna 202 and the third antenna 203.

[0067] When antennas operate in similar frequency bands, mutual coupling may occur between them. This means that the signal transmitted or received by one antenna may affect the performance of the other antenna. By placing the MHB CA ANT between the second antenna 202 and the third antenna 203, the spacing between the antennas can be optimized, thereby reducing this mutual coupling effect and improving the isolation of the entire system.

[0068] Exemplarily, the first antenna may be provided at any position of the device, and this embodiment of the present application does not impose any limitation thereto.

[0069] For example, in the embodiments of the present application, Figure 2 As shown in the antenna layout diagram, the second antenna 202 and the third antenna 203 are symmetrically arranged.

[0070] Exemplarily, the second antenna 202 is a LMHB main antenna, and the second antenna 202 is a LMHB diversity antenna. The main antenna and the diversity antenna should maintain a certain physical distance, which is usually recommended to be at least one-quarter of a wavelength. This can maximize the effect of spatial diversity, reduce the correlation between signals, and thus improve the signal-to-noise ratio at the receiving end.

[0071] For example, the two antennas can be placed at different corners or edges of the device so that they can receive signals from different directions. For example, in a smartphone, one antenna can be located at the top and the other at the bottom.

[0072] To ensure good signal quality regardless of how the user holds the phone, the present application considers using a symmetrical layout.

[0073] Exemplarily, the second antenna 202 and the third antenna 203 can be respectively placed on the left and right sides or the upper and lower ends of the phone.

[0074] Exemplarily, Figure 3 A structure diagram of a radio frequency antenna is provided for the present application. In the present embodiment, the radio frequency module 101 includes: a power amplifier PA(1), a single-pole double-throw SP2T switch (5), and a duplexer (2); the antenna module 102 further includes: a transmitting model TX-mode (4), wherein:

[0075] The duplexer (2) is respectively connected with the PA(1) and the static contact of the SP2T switch, the first moving contact of the SP2T switch is connected with the TX-mode (4), and the second moving contact of the SP2T switch is connected with the first antenna 201;

[0076] The TX-mode (4) is further respectively connected with the second antenna 202 and the third antenna 203.

[0077] Exemplarily, the TX-mode (4) can be a two-port TX-mode (42).

[0078] When the antenna transmits signals, the PA(1) plays a crucial role. Its main function is to amplify the low-power signal output from the radio frequency front-end or modulator to a sufficiently high level, so that it can be effectively transmitted through the antenna, ensuring that the signal can cover the required distance and have sufficient strength at the receiving end to be correctly decoded. By increasing the power of the signal, the PA(1) helps to expand the coverage of wireless communication, which is particularly important for base stations, satellite communication systems, and any application that requires long-distance transmission. A high-quality PA(1) not only provides sufficient gain, but also maintains good linearity and a low noise factor, thereby reducing signal distortion and improving the performance and reliability of the overall communication system.

[0079] The conventional design and connection method is as follows Figure 4 and Figure 5As shown, the quadplexer (3) is connected to the PA (1) and the dual-port TX-mode (42) respectively, the dual port includes a first end and a second end, the first end includes two ports, the first sub-port of the first end of the dual-port TX-mode (42) is connected to the low-frequency band LB antenna 301, the second sub-port of the first end of the dual-port TX-mode (42) is connected to the medium-high frequency band MHB antenna 302, and the second end of the dual-port TX-mode (42) is connected to the quadplexer (3).

[0080] However, the quadplexer (3) and dual-port TX-mode (42) used in the above-mentioned related technologies can process four different frequency bands, which not only includes transmission and reception, but also may involve multiple different frequency ranges. Therefore, the filter design, isolation requirements and signal processing capabilities within the quadplexer (3) are more complex. In addition, in order to ensure the stability and reliability of multi-band operation, the components in the quadplexer (3) must have higher performance indicators, such as lower insertion loss, better linearity, higher isolation, etc. These high-performance components are often more expensive.

[0081] In addition, high-performance quadplexers (3) may require more advanced manufacturing processes and higher-quality materials to meet stringent performance requirements. These high-end materials and technologies will further increase costs.

[0082] However, the duplexer (2) only needs to process two frequency bands (one for transmission and one for reception), has a relatively simple design, and has fewer components. It usually contains two bandpass filters or cavity filters, one for the transmission and one for the reception path. Therefore, compared with the quadplexer (3), the duplexer (2) has a lower cost.

[0083] In wireless communication systems, single-port TX-mode (41) is generally considered to be less expensive than dual-port TX-mode (42). This is mainly because the single-port design only requires one PA (1), a filter bank, and other related RF components, while the dual-port TX-mode (42) requires two sets of such components, which directly increases the hardware cost. The single-port design uses fewer components and occupies less circuit board space, which is particularly important for portable devices such as smartphones. In addition, the design of single-port TX-mode (41) is relatively simple, which reduces the design and debugging time, and requires fewer assembly steps during the production process, thereby reducing manufacturing costs. Since only one PA (1) is working, single-port TX-mode (41) generally has lower power consumption, which means longer battery life for battery-powered mobile devices. Dual-port TX-mode (42) generates more heat due to the presence of more PAs and other components, and therefore requires a more complex heat dissipation solution, while single-port TX-mode (41) has a lower requirement in this regard, further reducing costs. Finally, fewer components means fewer potential failure points, thereby reducing maintenance costs and failure rates. In summary, single-port TX-mode (41) has cost advantages in hardware complexity, circuit board space, design and manufacturing, power consumption, heat dissipation management, and maintenance.

[0084] Therefore, in the embodiment of the present application, a single-port TX-mode (41) and a plurality of duplexers (2) can be used to design a radio frequency antenna.

[0085] For example, Figure 6 As shown, TX-mode (4) can be a single-port TX-mode (41). In one embodiment, the single-port TX-mode (41) includes a first end, and the first end is provided with a single port. The antenna module 102 further includes: a single-pole four-throw SP4T switch (6).

[0086] The static contact of the SP4T switch (6) is connected to the first end of the single-port TX-mode (41), and the first movable contact of the SP4T switch (6) is connected to the first antenna 201, so that the first antenna 201 is connected to the single-port TX-mode (41) through the first movable contact and the static contact.

[0087] The single-port TX-mode (41) further includes a second end, wherein the second end is provided with a plurality of ports; the duplexer (2) includes a high-band HB duplexer (22) and a mid-band MB duplexer (21), wherein:

[0088] The first port of the HB duplexer (22) is connected to the first sub-port of the second end of the single-port TX-mode (41), and the second port of the HB duplexer (22) is connected to the transceiver connected to the radio frequency antenna;

[0089] The first port of the MB duplexer (21) is connected to the second sub-port of the second end of the single-port TX-mode (41), and the second port of the MB duplexer (21) is connected to the transceiver.

[0090] For example, Figure 6 As shown, the ports at the second end are TRX1, TRX2, TRX3, and TRX4.

[0091] For example, taking the high-frequency band auxiliary carrier as an example, MHB CA ANT1->SP4T switch (6)->single-port TX-mode (41)->first HB duplexer (221)->transceiver; that is, one end point of the first HB duplexer (221) is connected to the TRX2 port of the single-port TX-mode (41), and the single-port TX-mode (41) is connected to the transceiver through the first HB duplexer (221).

[0092] For example, taking the mid-band auxiliary carrier as an example, MHB CAANT->SP4T switch (6)->single-port TX-mode (41)->first MB duplexer (211)->transceiver; that is, one end point of the first MB duplexer (211) is connected to the TRX1 port of the single-port TX-mode (41), and the single-port TX-mode (41) is connected to the transceiver through the first MB duplexer (211).

[0093] For example, the high-band HB duplexer (22) generally processes signals in higher frequency ranges, such as 2.4 GHz, 5 GHz, etc. These frequency bands are commonly used for Wi-Fi, Bluetooth, some LTE bands (such as Band 40, Band 41) and other high-frequency wireless communication standards.

[0094] Exemplarily, the mid-band MB duplexer (21) processes a frequency range between a low-band and a high-band, such as 1.8 GHz, 2.1 GHz, etc. These frequency bands are commonly used in 3G, 4G LTE (such as Band 1, Band 3) and other mid-band wireless communication standards.

[0095] In wireless communication systems, an HB duplexer (22) is a device used to separate HB transmit and receive signals. It has two ports: the first port is usually connected to the transmit path, and the second port is connected to the receive path. The single-port TX-mode (41) and the RF antenna mentioned here are connected through the HB duplexer (22). The specific configuration is as follows:

[0096] The first port of the HB duplexer (22) is connected to the first sub-port of the second end of the single-port TX-mode (41):

[0097] That is, the output signal of the single-port TX-mode (41) will enter the first port of the HB duplexer (22) through the first sub-port of the second end thereof. The HB duplexer (22) will allow the transmission signal to pass through and guide it to the antenna for transmission.

[0098] The second port of the HB duplexer (22) is connected to a transceiver connected to a radio frequency antenna:

[0099] That is, the signal received from the antenna will be transmitted to the transceiver through the second port of the HB duplexer (22). The transceiver is responsible for processing the received signal, and may include subsequent processing steps such as demodulation and amplification.

[0100] For example, in a smartphone application, when the phone needs to transmit a high-frequency signal (such as 2.4 GHz or 5 GHz), the single-port TX-mode (41) generates and processes the signal and outputs it through the first sub-port of its second end. The signal is then filtered through the first port of the HB duplexer (22) and transmitted to the antenna for transmission.

[0101] In the receiving path, after the antenna receives the high frequency band signal, the signal is filtered through the second port of the HB duplexer (22) and transmitted to the transceiver for demodulation and other processing, and finally the data is transmitted to the baseband processor.

[0102] For example, in the application of IoT devices, when the device needs to send a high-frequency band signal (for example, for Wi-Fi or Bluetooth communication), the single-port TX-mode (41) also generates and processes the signal, and then outputs it through the first sub-port of its second end. The signal is filtered by the first port of the HB duplexer (22) and then transmitted to the antenna for transmission. In the receiving path, after the antenna receives the high-frequency band signal (for example, from other Wi-Fi devices or Bluetooth devices), the signal is filtered by the second port of the HB duplexer (22) and transmitted to the transceiver for demodulation and other processing, and finally the data is transmitted to the microcontroller or other processing unit. This design not only improves the performance of the system, but also simplifies the design and debugging process, ensuring the effective transmission and reception of high-frequency band signals.

[0103] In wireless communication systems, the MB duplexer (21) is used to separate transmit and receive signals in the mid-frequency band to ensure a clear and interference-free signal path.

[0104] Exemplarily, the first port of the MB duplexer (21) is connected to the second subport of the second end of the single-port TX-mode (41), and the second port of the MB duplexer (21) is connected to the transceiver.

[0105] That is, in a wireless communication system, a single-port TX-mode (41) generates and processes the MB's transmit signal, and the processed signal is output through the second sub-port of its second end. The signal then passes through the first port of the MB duplexer, is filtered, and is transmitted to the antenna for transmission. In the receiving path, after the antenna receives the intermediate frequency band signal, the signal is filtered through the second port of the MB duplexer (21) and transmitted to the transceiver. The transceiver demodulates and otherwise processes the signal, and ultimately transmits the data to a baseband processor or other processing unit. This configuration ensures the effective transmission and reception of intermediate frequency band signals while avoiding mutual interference between the transmit and receive signals, thereby improving the overall performance of the system.

[0106] For example, in a smartphone, when a 4G LTE signal in a mid-band (such as 1.8 GHz or 2.1 GHz) needs to be transmitted, the single-port TX-mode (41) generates and processes the signal and then outputs it through the second sub-port of its second end. The processed signal is filtered through the first port of the mid-band duplexer and transmitted to the antenna for transmission. In the receiving path, after the antenna receives a 4G LTE signal in a mid-band, the signal is filtered through the second port of the MB duplexer (21) and transmitted to the transceiver. The transceiver demodulates and otherwise processes the signal and ultimately transmits the data to the baseband processor. This design ensures the effective transmission and reception of 4G LTE signals in the mid-band while avoiding mutual interference between the transmitted and received signals.

[0107] In summary, high-band and mid-band duplexers are designed for different frequency ranges to ensure efficient signal transmission and reception within their respective frequency bands. High-band duplexers typically handle high-frequency signals such as 2.4 GHz and 5 GHz, while mid-band duplexers handle intermediate-frequency signals such as 1.8 GHz and 2.1 GHz. Both types of duplexers are widely used in smartphones, IoT devices, and other wireless communication equipment, improving overall system performance by optimizing filtering performance and isolation.

[0108] In another embodiment, the antenna module 102 further includes: a single-pole eight-throw SP8T switch (7), a combiner (8), and a double-pole double-throw switch (9), wherein:

[0109] The combiner comprises a first end and a second end, the first end of the combiner is provided with a plurality of ports, and the second end of the combiner is provided with a single port;

[0110] The first sub-port of the first end of the combiner is connected to the second moving contact of the SP4T switch (6), and the second sub-port of the first end of the combiner is connected to the static contact of the SP8T switch;

[0111] The second end of the combiner is connected to the first static contact of the double-pole double-throw switch; the first moving contact of the double-pole double-throw switch (9) is connected to the second antenna 202, and the second moving contact of the double-pole double-throw switch (9) is connected to the third antenna 203.

[0112] Combiners are used to combine multiple signals of different frequencies into a single composite signal, which is then transmitted through a single antenna or transmission path. Combiners are very useful in wireless communication systems, especially when signals from multiple frequency bands need to be processed simultaneously.

[0113] Illustratively, the combiner may combine different frequency bands, such as an LB signal and an MHB signal.

[0114] In the radio frequency module 101, the SP2T switch (5) includes a first SP2T switch (51), a first SP2T switch (52), and a third SP2T switch (53), wherein:

[0115] The first movable contact of the SP8T switch is connected to the second movable contact of the first SP2T switch (51), the first port of the HB duplexer (22) is connected to the static contact of the first SP2T switch (51), and the third port of the HB duplexer (22) is connected to the HB port of the PA (1);

[0116] The second moving contact of the SP8T switch is connected to the second moving contact of the second SP2T switch (52), the first port of the MB duplexer (21) is connected to the static contact of the first SP2T switch (52), and the third port of the MB duplexer (21) is connected to the MB port of the PA (1).

[0117] For example, the MB primary component carrier (PCC) signal path is as follows: PA (1) -> second MB duplexer (212) -> second SP2T switch (52) -> SP8T switch (7) -> combiner -> second antenna 202 (LMHB TRX ANT2);

[0118] Exemplarily, the second end of the combiner is connected to the first static contact of the double-pole double-throw switch (9); the first movable contact of the double-pole double-throw switch is connected to the second antenna 202; then, the HB PCC signal path example is as follows:

[0119] PA (1)->second HB duplexer (222)->first SP2T switch (51)->SP8T switch (7)->combiner (8)->second antenna 202 (MHB TRX ANT2);

[0120] In some possible embodiments, the radio frequency module 101 further includes: a filter (10), wherein:

[0121] The filter is used to select a specific frequency range, ensuring that only the desired frequency band is passed. For example, in a multi-band system, the filter can ensure that only the high-band (HB) signal is passed, while signals in other frequency bands are suppressed.

[0122] The first port of the filter is connected to the HB port of the PA (1), and the second port of the filter is connected to the static contact of the third SP2T switch (53). Exemplarily, the path of the HB signal can also be: PA (1) -> filter (10) -> third SP2T switch (53) -> SP8T switch (7) -> combiner (8) -> second antenna 202 (LMHB TRX ANT2);

[0123] When the second movable contact of the double-pole double-throw switch (9) is connected to the third antenna 203, the third antenna receives and transmits signals.

[0124] In this case, the HB PCC signal path example is as follows:

[0125] PA (1)->second HB duplexer (222)->second SP2T switch (52)->SP8T switch (7)->combiner (8)->third antenna 203 (MHB DRX ANT3);

[0126] Exemplarily, the path of the HB signal may also be: PA (1)->filter (10)->third SP2T switch (53)->SP8T switch (7)->combiner (8)->third antenna 203 (LMHB TRX ANT2).

[0127] In some possible embodiments, the shape and size of the main body are determined according to factors such as antenna frequency and actual environment.

[0128] In some possible embodiments, in order to reduce the overall size and improve the waterproof performance, the antenna can be directly integrated into the device housing, or the antenna can be connected to the radio frequency module using an FPC.

[0129] In summary, the RF antenna proposed in the embodiment of the present application includes: an antenna module, the antenna module including a first antenna, a second antenna, and a third antenna; wherein the first antenna is a mid-high band carrier aggregation antenna (MHB CAANT), the second antenna is a low-mid-high band (LMHB) main antenna, and the third antenna is a LMHB diversity antenna; and a RF module, the RF module including a plurality of duplexers, a plurality of switches, PAs, and filters. Conventional designs require splitting the LB for devices supporting CA to ensure proper operation of CA. Splitting the main antenna LB requires the use of a plurality of quadplexers and a dual-port TX-mode, which is costly. In the embodiment of the present application, a separate antenna is designed for the carrier aggregation function, which not only simplifies its structure but also, compared to conventional RF systems, the duplexer and single-port TX mode used in the design of the embodiment of the present application can save multiple quadplexers in the RF device, making the design cost far lower than that of a quadplexer and a dual-port TX-mode. This not only improves the performance of the RF antenna but also further reduces the cost.

[0130] In some possible embodiments, Figure 7 This is a schematic block diagram of an electronic device provided in an embodiment of the present application.

[0131] Figure 7 The electronic device 700 shown is composed of three main parts: a radio frequency module 101 , an antenna module 102 and a transceiver chip module 103 .

[0132] The RF module 101 is responsible for processing the sending and receiving of RF signals. Its function is to convert baseband signals into RF signals for transmission and convert received RF signals into baseband signals for processing, ensuring the quality and reliability of the signals during wireless transmission.

[0133] The antenna module 102 is used to send and receive wireless signals and includes one or more antennas covering different frequency ranges. Its function is to radiate the RF signal generated by the RF module into the air and receive RF signals from the air. The design and performance of the antenna directly affect the quality and range of wireless communication.

[0134] The transceiver chip module 103 is responsible for the processing of baseband signals, including components such as a digital signal processor (DSP), an analog-to-digital converter (ADC), and a digital-to-analog converter (DAC), which functions to process baseband signals received from the radio frequency module and generate baseband signals that need to be transmitted, while performing various signal processing algorithms, such as modulation, demodulation, encoding, and decoding.

[0135] Through the cooperative work of these parts, the electronic device 700 can realize high-quality wireless communication functions.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A radio frequency antenna, characterized in that: include: An antenna module, comprising a first antenna, a second antenna, and a third antenna; wherein the first antenna is a mid-high band carrier aggregation antenna MHB CA ANT, the second antenna is a low-mid-high band LMHB main antenna, and the third antenna is a LMHB diversity antenna; The radio frequency module is connected to each antenna in the antenna module to transmit and receive signals through at least one of the first antenna, the second antenna, and the third antenna.

2. The radio frequency antenna according to claim 1, wherein: The radio frequency module includes: a power amplifier PA, a single-pole double-throw SP2T switch and a duplexer; the antenna module also includes: a transmission model Tx-mode, wherein: The duplexer is connected to the PA and the static contact of the SP2T switch respectively, the first movable contact of the SP2T switch is connected to the Tx-mode, and the second movable contact of the SP2T switch is connected to the first antenna; The Tx-mode is also connected to the second antenna and the third antenna respectively.

3. The radio frequency antenna according to claim 2, wherein: The Tx-mode is a single-port Tx-mode, and the single-port Tx-mode includes a first end, and the first end is provided with a single port. The antenna module further includes: a single-pole four-throw SP4T switch, wherein: The static contact of the SP4T switch is connected to the first end of the single-port Tx-mode, and the first movable contact of the SP4T switch is connected to the first antenna, so that the first antenna is connected to the single-port Tx-mode through the first movable contact and the static contact.

4. The radio frequency antenna according to claim 3, characterized in that The single-port Tx-mode further includes a second end, wherein the second end is provided with a plurality of ports; the duplexer includes a high-band HB duplexer and a mid-band MB duplexer, wherein: The first port of the HB duplexer is connected to the first sub-port of the second end of the single-port Tx-mode, and the second port of the HB duplexer is connected to the transceiver connected to the RF antenna; The first port of the MB duplexer is connected to the second sub-port of the second end of the single-port Tx-mode, and the second port of the MB duplexer is connected to the transceiver.

5. The radio frequency antenna according to claim 4, characterized in that: The antenna module further includes: a single-pole eight-throw SP8T switch, a combiner, and a double-pole double-throw switch, wherein: The combiner comprises a first end and a second end, the first end of the combiner is provided with a plurality of ports, and the second end of the combiner is provided with a single port; The first sub-port of the first end of the combiner is connected to the second moving contact of the SP4T switch, and the second sub-port of the first end of the combiner is connected to the static contact of the SP8T switch; The second end of the combiner is connected to the first static contact of the double-pole double-throw switch; the first moving contact of the double-pole double-throw switch is connected to the second antenna, and the second moving contact of the double-pole double-throw switch is connected to the third antenna.

6. The radio frequency antenna according to claim 5, characterized in that The SP2T switch includes a first SP2T switch and a second SP2T switch, wherein: The first movable contact of the SP8T switch is connected to the second movable contact of the first SP2T switch, the first port of the HB duplexer is connected to the static contact of the first SP2T switch, and the third port of the HB duplexer is connected to the HB port of the PA; The second moving contact of the SP8T switch is connected to the second moving contact of the second SP2T switch, the first port of the MB duplexer is connected to the static contact of the second SP2T switch, and the third port of the MB duplexer is connected to the MB port of the PA.

7. The radio frequency antenna according to claim 6, characterized in that The radio frequency module further includes a filter, and the SP2T switch further includes a third SP2T switch, wherein: The first port of the filter is connected to the HB port of the PA, and the second port of the filter is connected to the static contact of the third SP2T switch.

8. The radio frequency antenna according to claim 1, wherein: The first antenna is disposed between the second antenna and the third antenna.

9. The radio frequency antenna according to claim 1, wherein: The second antenna and the third antenna are arranged symmetrically.

10. The radio frequency antenna according to claim 1, wherein: The antenna module is connected to the radio frequency module via a spring clip.

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