CN112909511B - Multiband 5G terminal antenna - Google Patents
Multiband 5G terminal antenna Download PDFInfo
- Publication number
- CN112909511B CN112909511B CN202110163419.9A CN202110163419A CN112909511B CN 112909511 B CN112909511 B CN 112909511B CN 202110163419 A CN202110163419 A CN 202110163419A CN 112909511 B CN112909511 B CN 112909511B
- Authority
- CN
- China
- Prior art keywords
- radiating element
- shaped
- antenna
- shaped main
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Abstract
The invention discloses a multiband 5G terminal antenna, which comprises a dielectric substrate and a multi-radiation unit, wherein the multi-radiation unit comprises a first S-shaped main radiation unit, a second S-shaped auxiliary radiation unit, a third M-shaped auxiliary radiation unit, a fourth T-shaped auxiliary radiation unit and a fifth H-shaped auxiliary radiation unit; the first S-shaped main radiating unit is arranged on the dielectric substrate, the four auxiliary radiating units are connected with each other, the first S-shaped main radiating unit is arranged on a frame of the terminal equipment and located below the first S-shaped main radiating unit, the first S-shaped main radiating unit is connected with the coaxial probe to perform direct feed, one sides of the four auxiliary radiating units are aligned with one side of the first S-shaped main radiating unit patch in parallel, and the grounding of the whole antenna is interconnected with the grounding of the terminal equipment. The invention can adjust the resonant frequency of the antenna and the bandwidth of the antenna by adjusting the size, the shape and the position angle of the radiating unit, thereby realizing the working performance of multiple frequency bands and meeting the communication requirement of the 5G terminal.
Description
Technical Field
The invention relates to a terminal antenna, in particular to a multiband 5G terminal antenna.
Background
The rapid development of mobile communication has prompted the development of mobile communication from 3G, 5G, which is the development of 4G, to the future 6G. The wireless communication technology has been rapidly developed, and the antenna plays an important role in transmitting and receiving signals in a communication system as an indispensable device in systems such as radio communication, satellite communication, mobile communication, and radar. All wireless communication data needs to be converted by the antenna as the most front-end component of the whole system. Therefore, the performance of the antenna directly affects the performance of the entire wireless communication system. Especially, the development of 5G communication requires high capacity and high rate mobile communication, and the number of antennas increases due to the increase of communication protocol standards for downward compatibility. Due to the size of the device, the requirement of an antenna capable of covering multiple communication protocol standards and corresponding operating frequency bands in the mobile terminal device is particularly urgent compared to the conventional antenna with a single frequency band and a single function. In the field of miniaturized and compact mobile devices, how to further reduce the size of the antenna and maintain excellent antenna performance such as higher gain and larger bandwidth is becoming an important research direction for researchers at present. Most of dual-frequency or multi-frequency antennas developed at present are many, such as printed monopole antennas, dipole antennas, slot antennas, microstrip antennas, etc., and there are many design ideas therein, such as adopting a gradual change structure for monopole or dipole antennas, introducing a parasitic radiation unit to increase a sleeve and multiple branches, etc., while other technical methods such as grooving, multilayer patch, etc. all have certain disadvantages, wherein the parasitic unit can significantly increase the area of the antenna; the multiple branches directly correspond to one working frequency band, so the minimum working frequency band limits the miniaturization of the antenna; the multi-layer patch approach increases the profile height of the antenna. In order to effectively cover a plurality of resonance frequency bands of a mobile communication system, meet different communication protocol requirements and keep good antenna performance and applicability, the multiband design of the antenna can be realized, and the miniaturization and broadband design of the antenna are guaranteed through designing a compact multiband resonance structure.
The document ' research and design of a multi-frequency microstrip antenna suitable for S wave band ' by Chi Tao, lu Houwen et al ' in 2019 proposes a method, in which a surface current distribution path is changed by loading a gap on a patch, that is, the distribution of a field corresponding to a natural mode is changed, the resonant frequency is reduced by a middle slotting method, the multi-band operation of the microstrip antenna is realized by surface slotting and coaxial feeding, but the radiation performance is poor at some low-frequency resonance points, and the purpose of miniaturization is not improved sufficiently by a corner cutting method. The multi-frequency antenna which has been developed at present has a WLAN antenna with asymmetric coplanar feeding, but the loaded reactance greatly reduces the radiation efficiency of the antenna.
Disclosure of Invention
The invention aims to provide a multiband 5G terminal antenna for realizing multiband and miniaturization, which can reduce the space occupation of the antenna, realize the design of multi-band co-fusion, and be used as a frame of terminal equipment to realize the beautifying design
The purpose of the invention is realized by the following steps:
a multiband 5G terminal antenna comprises a dielectric substrate 107 and a multi-radiation unit, wherein the multi-radiation unit comprises a first S-shaped main radiation unit 102, a second S-shaped auxiliary radiation unit 103, a third M-shaped auxiliary radiation unit 104, a fourth T-shaped auxiliary radiation unit 105 and a fifth H-shaped auxiliary radiation unit 106; the first S-shaped main radiating element 102 is disposed on the dielectric substrate 107, the four sub-radiating elements are connected to each other, and disposed on a frame of the terminal device and located below the first S-shaped main radiating element 102, the first S-shaped main radiating element 102 is connected to the coaxial probe 101 for direct feeding, the coaxial probe 101 is disposed on a central axis of the first S-shaped main radiating element 102, one side of the four sub-radiating elements is aligned with one side of a patch of the first S-shaped main radiating element 102 in parallel to realize radiation at different edges, so as to generate an induced current, and the sub-radiating elements are excited, and the ground of the whole antenna and the ground of the terminal device are interconnected.
The adjustment of the center frequency and the bandwidth of each frequency band is realized by adjusting the size and the corresponding position of each radiating element;
the dielectric substrate 107 is of a single-layer printed board structure.
Compared with the prior art, the invention has the beneficial effects that:
the antenna structure designed by the invention adopts an asymmetric non-planar structure, creatively utilizes an integrated three-dimensional design method combining a planar radiation unit design and a terminal equipment frame to realize the organic design of a multiband antenna, combines a mode combining direct feed and indirect feed, realizes the design of multiband and miniaturization, and can flexibly and conveniently finish the design of multiband by adjusting the parameters and the position of the antenna under different application requirements. The probe 101 of the antenna directly feeds a first S-shaped main radiating element 102, and carries out field induction excitation in a mode of edge radiation on a second S-shaped auxiliary radiating element 103, a third M-shaped auxiliary radiating element 104, a fourth T-shaped auxiliary radiating element 105 and a fifth H-shaped auxiliary radiating element 106 which are designed on a frame of the terminal equipment, so that the multi-resonance design is realized, the efficiency of the whole antenna can be effectively improved, the multi-band miniaturization design is realized through the edge radiation excitation auxiliary radiating element, and the design of low antenna section and small size is realized.
The invention adopts the mode of coaxial probe feed and edge radiation excitation to realize the direct feed of the main radiation unit and the excitation of the radiation current of the auxiliary radiation unit to realize the feed of a plurality of radiation units, and through adjusting the size and the corresponding position of each radiation unit, two edges formed by the first S-shaped main radiation unit 102 respectively excite four auxiliary radiation units, and the size of each radiation unit and the positions of the main radiation unit and the auxiliary radiation unit on the frame are adjusted, so that the antenna achieves good matching, and the requirement of multi-band design of wireless terminal equipment is met; the invention can realize flexible regulation and control of a plurality of resonant frequencies and flexible control of corresponding frequency band bandwidth according to specific mobile communication requirements.
Drawings
FIG. 1 is a three-dimensional block diagram of an antenna designed according to the present invention;
FIG. 2 is a top view of an antenna designed in accordance with the present invention;
FIG. 3 is a left side view of an antenna designed in accordance with the present invention;
fig. 4 is a right side view of an antenna designed in accordance with the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention provides a multiband 5G terminal antenna, which realizes coaxial feeding by connecting a central S-shaped main radiating element 102 with a probe feeder 101, and realizes multiband and miniaturization design by placing a second S-shaped auxiliary radiating element 103, a third M-shaped auxiliary radiating element 104, a fourth T-shaped auxiliary radiating element 105 and a fifth H-shaped auxiliary radiating element 106 on the lower side of the main radiating element 102. The design is characterized in that a main radiating unit of the designed antenna can be printed on the back or the bottom of the terminal, and a plurality of auxiliary radiating units can be designed on a frame of the terminal equipment, so that the space occupation of the antenna can be reduced, the multi-band co-fusion co-generation design can be realized, and the antenna can be used as the frame of the terminal equipment to realize the beautification design.
A multiband 5G terminal antenna comprises a dielectric substrate 107 and multiple radiating elements, and is characterized in that the multiple radiating element structure, namely a first S-shaped main radiating element 102, a second S-shaped auxiliary radiating element 103, a third M-shaped auxiliary radiating element 104, a fourth T-shaped auxiliary radiating element 105 and a fifth H-shaped auxiliary radiating element 106 are placed on the dielectric substrate 107, wherein the main radiating element is designed on the dielectric substrate 107, and the auxiliary radiating elements are designed on the frame of a terminal device; the first S-shaped main radiating element 102 adopts a feeding probe 101 to realize the center direct feeding of the radiating element of the coaxial feeding, the multiple sub-radiating elements, namely, the second S-shaped sub-radiating element 103, the third M-shaped sub-radiating element 104, the fourth T-shaped sub-radiating element 105 and the fifth H-shaped sub-radiating element 106, indirectly feed in an edge radiation manner with the first S-shaped main radiating element 102, and the grounding of the whole antenna and the grounding of the terminal device are interconnected.
The first S-shaped main radiation unit 102 is a rotary S-shaped unit, and the angle is adjusted to some extent; the feeding probe 101 is placed at the center position of the first S-shaped main radiating element 102; the second S-shaped sub-radiating element 103, the third M-shaped sub-radiating element 104, the fourth T-shaped sub-radiating element 105 and the fifth H-shaped sub-radiating element 106 are respectively in an "S", "M", "T" and "H" shape, are designed on the frame of the terminal device, and are located below the first S-shaped main radiating element 102, and the sub-radiating elements are connected to form a multi-radiation structural unit.
The purpose of the invention is realized by the following steps: the antenna mainly comprises a dielectric substrate 107, a coaxial probe 101, a first S-shaped main radiating element 102 loaded on the dielectric substrate, a second S-shaped auxiliary radiating element 103, a third M-shaped auxiliary radiating element 104, a fourth T-shaped auxiliary radiating element 105 and a fifth H-shaped auxiliary radiating element 106 on a terminal frame. Wherein the first S-shaped main radiating element 102 is connected to the coaxial probe 101 for direct feeding and the coaxial probe 101 is placed on the central axis of the main radiating element. The four auxiliary radiating elements, namely the second S-shaped auxiliary radiating element 103, the third M-shaped auxiliary radiating element 104, the fourth T-shaped auxiliary radiating element 105 and the fifth H-shaped auxiliary radiating element 106, are arranged on the frame of the terminal device and are located below the first S-shaped main radiating element 102, the auxiliary radiating elements are connected with each other to form a multi-radiating structural element, and the grounding of the whole antenna is interconnected with the grounding of the terminal device. The antenna achieves good impedance matching and meets the design requirement of multiple frequency bands by adjusting the sizes of the main radiating element and the auxiliary radiating element, namely the size of the first S-shaped main radiating element 102, the sizes of the second S-shaped auxiliary radiating element 103, the third M-shaped auxiliary radiating element 104, the fourth T-shaped auxiliary radiating element 105 and the fifth H-shaped auxiliary radiating element 106 which are designed on the frame of the terminal equipment, and the position relation among the main radiating elements and the auxiliary radiating elements.
The dielectric substrate 107 adopts a single-layer printed board structure.
The loaded first S-shaped main radiating element 102 is directly connected to the probe feed line 101 through the dielectric substrate 107 on its central axis to form a coaxial feed, i.e. the inner conductor of the connector of the coaxial probe 101 is connected to the first S-shaped main radiating element 102 for direct feeding. The loaded four secondary radiating elements are arranged on the frame of the terminal equipment and are positioned below the first S-shaped main radiating element 102, and the secondary radiating elements are excited by current generated by edge radiation of the main radiating element. One side of the four auxiliary radiating elements is aligned with one side of the main radiating element patch in parallel to realize radiation of different edges, induction current is generated to excite the auxiliary radiating elements, and the grounding of the whole antenna is interconnected with the grounding of the terminal equipment. Because all the radiation units are compactly placed, the antenna is simple to manufacture, the size problem of the whole antenna is effectively reduced, and the designed antenna is more miniaturized.
The radiating elements, namely the first S-shaped main radiating element 102, the second S-shaped sub radiating element 103, the third M-shaped sub radiating element 104, the fourth T-shaped sub radiating element 105 and the fifth H-shaped sub radiating element 106, can realize the adjustment of the center frequency and bandwidth of each frequency band by adjusting the size and corresponding position of each radiating element. The first S-shaped main radiating element 102 forms two similar parallel slot structures, the respective sizes of the four sub-radiating elements and the overlapping size of the edges between the main radiating element and the sub-radiating elements to adjust the resonant frequency of the antenna and the bandwidth of the antenna, so that the antenna achieves good matching, meets the design requirement of corresponding multiband, can be applied to the field of communication systems such as 5G mobile terminals, and has a certain application value.
In summary, the present invention discloses a multiband 5G terminal antenna, which adopts a feeding manner combining coaxial feeding and edge-radiated induced current excitation, thereby realizing the design of a multiband antenna. The antenna is mainly composed of a dielectric substrate, a grounding plate, a coaxial feeder line, an S-shaped main radiation unit, an S-shaped auxiliary radiation unit, an M-shaped auxiliary radiation unit, a T-shaped auxiliary radiation unit and an H-shaped auxiliary radiation unit. The main radiating element adopts a coaxial feeding mode to directly feed, the auxiliary radiating element stimulates feeding through current generated by radiation with the main radiating element, and the auxiliary radiating element is designed on a frame of the terminal equipment. The resonant frequency of the antenna and the bandwidth of the antenna can be adjusted by adjusting the size, the shape and the position angle of the radiating unit, the working performance of multiple frequency bands is realized, and the communication requirement of the 5G terminal is met.
Claims (3)
1. A multiband 5G terminal antenna, comprising a dielectric substrate (107) and a multi-radiating element, characterized in that the multi-radiating element comprises a first S-shaped main radiating element (102), a second S-shaped sub-radiating element (103), a third M-shaped sub-radiating element (104), a fourth T-shaped sub-radiating element (105), a fifth H-shaped sub-radiating element (106); the dielectric substrate (107) is arranged on the back face or the bottom face of the terminal, the first S-shaped main radiating unit (102) is arranged on the surface of the dielectric substrate (107), the four auxiliary radiating units are connected with each other and arranged on a frame of the terminal equipment and located below the first S-shaped main radiating unit (102), the first S-shaped main radiating unit (102) is connected with the coaxial probe (101) for direct feeding, the coaxial probe (101) is arranged on a central axis of the first S-shaped main radiating unit (102), the four auxiliary radiating units are distributed on two adjacent frames in pairs and respectively keep parallel alignment with one side of a patch of the first S-shaped main radiating unit (102) to realize radiation of different edges, induction current is generated to excite the auxiliary radiating units, and the grounding of the whole antenna is interconnected with the grounding of the terminal equipment.
2. A multiband 5G terminal antenna according to claim 1, wherein the adjustment of the center frequency and bandwidth of each band is achieved by adjusting the size and corresponding position of each radiating element.
3. A multiband 5G terminal antenna according to claim 1, characterized in that said dielectric substrate (107) is of single-layer printed board construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110163419.9A CN112909511B (en) | 2021-02-05 | 2021-02-05 | Multiband 5G terminal antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110163419.9A CN112909511B (en) | 2021-02-05 | 2021-02-05 | Multiband 5G terminal antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112909511A CN112909511A (en) | 2021-06-04 |
| CN112909511B true CN112909511B (en) | 2023-03-17 |
Family
ID=76124147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110163419.9A Active CN112909511B (en) | 2021-02-05 | 2021-02-05 | Multiband 5G terminal antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112909511B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6408190B1 (en) * | 1999-09-01 | 2002-06-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Semi built-in multi-band printed antenna |
| CN108365334A (en) * | 2018-01-29 | 2018-08-03 | 哈尔滨工程大学 | A kind of multiband antenna closing on couple feed based on microstrip line |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100666113B1 (en) * | 2003-12-13 | 2007-01-09 | 학교법인 한국정보통신학원 | Internal Multi-Band Antenna with Multiple Layers |
| US20070139280A1 (en) * | 2005-12-16 | 2007-06-21 | Vance Scott L | Switchable planar antenna apparatus for quad-band GSM applications |
| KR100766784B1 (en) * | 2006-03-31 | 2007-10-12 | 주식회사 이엠따블유안테나 | Antenna |
| CN101587986B (en) * | 2008-05-19 | 2013-07-31 | 鸿富锦精密工业（深圳）有限公司 | Multi-frequency antenna |
| US8072389B2 (en) * | 2009-06-11 | 2011-12-06 | Pao-Sui Chang | Integrated multi-band antenna module |
| TWI523319B (en) * | 2013-07-22 | 2016-02-21 | 宏碁股份有限公司 | Mobile device |
| CN203589204U (en) * | 2013-10-25 | 2014-05-07 | 惠州市中和通信科技有限公司 | Multiband LTE cell phone antenna |
| CN108511892B (en) * | 2018-02-28 | 2020-04-03 | 哈尔滨工程大学 | Compact multi-band antenna |
| CN111987422B (en) * | 2020-06-09 | 2022-12-20 | 上海安费诺永亿通讯电子有限公司 | Ultralow-profile multi-frequency broadband antenna and communication equipment |
-
2021
- 2021-02-05 CN CN202110163419.9A patent/CN112909511B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6408190B1 (en) * | 1999-09-01 | 2002-06-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Semi built-in multi-band printed antenna |
| CN108365334A (en) * | 2018-01-29 | 2018-08-03 | 哈尔滨工程大学 | A kind of multiband antenna closing on couple feed based on microstrip line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112909511A (en) | 2021-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100771775B1 (en) | Perpendicular array internal antenna | |
| JP3864127B2 (en) | Multi-band chip antenna having dual feeding port and mobile communication device using the same | |
| US6268831B1 (en) | Inverted-f antennas with multiple planar radiating elements and wireless communicators incorporating same | |
| KR100906510B1 (en) | Antenna arrangement | |
| CN101106211B (en) | Dual loop multi-frequency antenna | |
| CN104396086B (en) | A kind of antenna and mobile terminal | |
| US6380903B1 (en) | Antenna systems including internal planar inverted-F antennas coupled with retractable antennas and wireless communicators incorporating same | |
| WO2013007165A1 (en) | Mimo antenna structure of multi-frequency band mobile phone | |
| KR100616545B1 (en) | Multi-band laminated chip antenna using double coupling feeding | |
| US20090174607A1 (en) | Antenna | |
| GB2419237A (en) | Multi-band antenna using interacting antenna elements including variable pitch coils and micro-strips | |
| US20190305415A1 (en) | Integrated multi-standard antenna system with dual function connected array | |
| JPH11150415A (en) | Multiple frequency antenna | |
| Wang et al. | Compact MIMO antenna for 5G portable device using simple neutralization line structures | |
| JP2002530909A (en) | Patch antenna device | |
| CN112563733B (en) | High-frequency radiating element and compact dual-band antenna | |
| CN113690599A (en) | Horizontal polarization omnidirectional super-surface antenna | |
| CN109687122A (en) | A kind of broadband low minor lobe array antenna | |
| CN110233330B (en) | Three-frequency common-aperture antenna based on structural multiplexing | |
| CN112909511B (en) | Multiband 5G terminal antenna | |
| CN107658557B (en) | Miniaturized three-dimensional multifrequency microstrip antenna | |
| Alja’afreh et al. | A dual-port, dual-polarized and wideband slot rectenna for ambient RF energy harvesting | |
| CN114094329B (en) | Symmetrical top Peano fractal loaded microstrip patch antenna | |
| CN105406182A (en) | UWB (Ultra Wide Band) MIMO (Multiple Input Multiple Output) antenna with controlled trap bandwidth | |
| CN213043048U (en) | Broadband omnidirectional antenna based on complex matching network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |