CN110380189A - A kind of miniature antenna and terminal - Google Patents

Abstract

A kind of miniature antenna and terminal, wherein the antenna is made of a radiation arm, a feed minor matters, two feedback ground minor matters and feed matching network corresponding with feedback ground minor matters；Using under inductance, using under capacitor, feed minor matters are composed the second feedback ground minor matters first feedback ground minor matters in series and parallel using inductance and capacitor.The present invention is integrated with GPS, WiFi2.4G resonance frequency and WiFi5G resonance frequency on radiation arm, a feed minor matters, two feedback ground minor matters and feed matching network corresponding with feedback ground minor matters, under the premise of guaranteeing the efficiency of antenna, effectively reduce antenna size, facilitate terminal more multi-functional and the introducing of camera and various sensors, is conducive to terminal and realizes higher screen accounting.

Description

A miniaturized antenna and terminal

technical field

The invention relates to the technical field of wireless communication, in particular to a miniaturized antenna and a terminal.

Background technique

With the continuous development of communication technology, people have higher and higher requirements for the screen of mobile terminals, and a higher screen-to-body ratio has become the development trend of mobile terminals; the increase in screen-to-body ratio makes the antenna environment worse, resulting in poor performance of the antenna .

In order to add more functions to the terminal, the introduction of more cameras and various sensors occupies more space on the top of the mobile phone, making the area for the antenna design smaller and smaller, resulting in a decrease in performance.

The current antenna design mostly uses different branches to cover different antenna frequency bands. This design requires a large antenna area, which is not conducive to achieving a higher screen-to-body ratio and introducing more functions to the terminal.

Contents of the invention

In order to overcome the above problems, the present invention provides a three-in-one miniaturized antenna with frequency bands including GPS, WIFI 2.4G and WIFI 5G, so as to meet the higher screen-to-body ratio requirements of mobile terminals.

The technical solution of the present invention is to provide a miniaturized antenna, which includes a radiating arm, a feeding branch, a feeding circuit, a first ground feeding branch, a first ground feeding network, a second ground feeding branch and a second ground feeding branch. A ground feeder network; one end of the feeder branch is connected to the radiation arm, the other end of the feeder branch is connected to the feeder circuit, and one end of the first ground feeder is connected to the radiation arm , the other end of the first ground feed branch is connected to the first ground feed network, one end of the second ground feed branch is connected to the radiation arm, and the other end of the second ground feed branch is connected to the The second ground feed network is connected; the first ground feed branch is grounded with an inductor, the second ground feed branch is grounded with a capacitor, and the feed branch is formed by combining an inductor and a capacitor in series and parallel.

For the improvement of the present invention, GPS resonance is generated between the radiating arm of the antenna from the feeding stub to the first ground feeding stub; Generate WiFi2.4G resonant frequency; the radiation arm of the antenna generates WiFi5G resonant frequency from the feeding branch to the end.

For the improvement of the present invention, the feed circuit includes an inductor L1, an inductor L2, a capacitor C1 and a capacitor C2, the inductor L1 controls the impedance position of the GPS, the capacitor C1 controls the impedance position of the WiFi2.4G resonant frequency, and the The combination of the inductor L1 and the capacitor C1 controls the impedance position of the GPS and WiFi2.4G resonance frequency; the series inductor L2 controls the impedance position of the WiFi5G resonance frequency, and the series capacitor C2 makes the antenna resonate between GPS and WiFi2.4G.

For the improvement of the present invention, the first ground feed network includes a capacitor C3, the size of which adjusts the frequency offset of the GPS resonance; moving the position of the first ground feed branch adjusts the resonance depth of the GPS antenna.

For the improvement of the present invention, the second ground feeding network includes an inductance L3, and the inductance L3 modulates the frequency offset of GPS and WiFi2.4G resonance.

For the improvement of the present invention, the length, width and height of the antenna are 15mm, 8mm and 10mm respectively.

The present invention also provides a terminal, which includes the above miniaturized antenna.

The terminals include mobile phones and tablet computers.

In the present invention, the antenna is composed of a radiating arm, a feeding branch, two ground feeding branches, and matching networks corresponding to the feeding and ground feeding branches; The branches use capacitors to go to the ground, and the feed branches use inductors and capacitors connected in series and parallel. The present invention integrates GPS, WiFi2.4G and WiFi5G on the matching network corresponding to the radiation arm, one feeding branch, two ground feeding branches, and the feeding and ground feeding branches, which effectively reduces the size of the antenna and can ensure the reliability of the antenna. efficiency.

Description of drawings

Fig. 1 is the structural representation of a kind of miniaturized antenna among the present invention;

FIG. 2 is a schematic structural diagram of the enlarged antenna at A in FIG. 1;

Fig. 3 is a schematic diagram of the length, width and height of the enlarged antenna at A in Fig. 1;

FIG. 4 is a schematic diagram of a circuit structure of a miniaturized antenna in the present invention.

Detailed ways

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right" etc. are based on The orientations or positional relationships shown in the drawings are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred devices or components must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as Limitations on the Invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; may be mechanically connected, may also be electrically connected; may be directly connected, may also be indirectly connected through an intermediary, and may be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Please refer to Figures 1 to 4, Figures 1 to 4 disclose a miniaturized antenna, the antenna 1 includes a radiation arm 2, a feeding branch 3, a feeding circuit 31, a first ground feeding branch 4, a second A ground feed network 41, a second ground feed branch 5 and a second ground feed network 51; one end of the feed branch 3 is connected to the radiation arm 2, and the other end of the feed branch 3 is connected to the The feeder circuit 31 is connected, one end of the first ground feeder branch 4 is connected to the radiation arm 2, the other end of the first ground feeder branch 4 is connected to the first ground feeder network 41, and the first ground feeder branch 4 is connected to the first ground feeder network 41. One end of the second ground feed branch 5 is connected to the radiation arm 2, and the other end of the second ground feed branch 5 is connected to the second ground feed network 51; the first ground feed branch 4 is connected to the ground using an inductance, The second ground feeding branch 5 is grounded using a capacitor, and the feeding branch 3 is formed by combining an inductor and a capacitor in series and parallel.

The radiating arm 2 is U-shaped, and one end of the feeding branch 3, the first ground feeding branch 4 and the second ground feeding branch 5 is respectively connected to the radiating arm 2; the feeding branch 3 is connected to the main board 10 of the terminal through the feeder circuit 31, the first ground feeding branch 4 is connected to the main board 10 of the terminal through the first ground feeding network 41, and the second ground feeding branch 5 is connected to the main board 10 of the terminal through the first ground feeding network 41. The second ground feeding network 51 is connected to the main board 10 of the terminal;

GPS, WiFi2.4G and WiFi5G are integrated on the matching network corresponding to the radiation arm 2, a feeding branch 3, two ground feeding branches, and the feeding and ground feeding branches. Under the condition of ensuring the efficiency of antenna 1, a large The size of the antenna 1 is reduced.

The GPS, WiFi2.4G and WiFi5G are basically the necessary functions on the current mobile terminal; the traditional antenna 1 design uses different branches to cover different antenna 1 frequency bands GPS, WiFi2.4G and WiFi5G.

It should be noted that the GPS is the Global Positioning System; the WiFi2.4G refers to the 2.4th generation WiFi, and 5G refers to the 5th generation WiFi; the 2.4G and 5G mentioned in WiFi refer to the frequency bands of G Hz; 2.4G is a wireless technology, because its frequency band is between 2.400GHz and 2.4835GHz, so it is referred to as 2.4G wireless technology; 2.4G WiFi refers to the technical standard based on IEEE 802.11b, and IEEE 802.11b is based on 2.4G Hz frequency band IEEE802.11 series standard products; 5G WiFi refers to the wireless technology developed based on the IEEE 802.11ac standard, because IEEE 802.11ac technology itself works in the 5G Hz frequency band, so it is also called 5G WiFi.

Specifically, the radiating arm 2 of the antenna 1 generates GPS resonance from the feeding branch 3 to the first ground feeding branch 4; the radiating arm 2 of the antenna 1 passes from the feeding branch 3 to the second feeding The WiFi2.4G resonant frequency is generated between the ground branches 5; the radiating arm 2 of the antenna 1 generates the WiFi5G resonant frequency from the feeding branch 3 to the end.

Specifically, the feeder circuit 31 includes an inductor L1, an inductor L2, a capacitor C1, and a capacitor C2, the inductor L1 controls the impedance position of the GPS, the capacitor C1 controls the impedance position of the WiFi2.4G resonant frequency, and the inductor L1 Combined with the capacitor C1 to control the impedance position of the GPS and WiFi2.4G resonance frequency; the series inductor L2 controls the impedance position of the WiFi5G resonance frequency, so that each mode can reach an ideal position, and the series capacitor C2 makes the antenna 1 in GPS and WiFi2.4G resonate.

Specifically, the first ground feed network 41 includes a capacitor C3, the size of the capacitor C3 adjusts the frequency offset of the GPS resonance; the position of the first ground feed branch 4 is moved to adjust the resonance depth of the GPS antenna 1; When the first ground feeding branch 4 moves closer to the feeding branch 3, the GPS resonance becomes shallower, otherwise the GPS resonance becomes deeper.

Specifically, the second ground feeding network 51 includes an inductance L3, and the inductance L3 modulates the frequency offset of GPS and WiFi2.4G resonance.

Referring to FIG. 3 , specifically, the length L, width B and height H of the antenna 1 are 15 mm, 8 mm and 10 mm, respectively.

The present invention also provides a terminal, which includes the aforementioned miniaturized antenna; the terminal includes but is not limited to a mobile phone and a tablet computer.

It should be noted that the purpose of the detailed explanations for the above-mentioned embodiments is only to explain the present invention so as to better explain the present invention. However, these descriptions cannot be construed as limiting the present invention for any reason, especially Yes, the various features described in different implementations can also be combined arbitrarily with each other to form other implementations. Unless there is an explicit description to the contrary, these features should be understood as being applicable to any implementation, and not limited in the described embodiment.

Claims (7)

1. a kind of miniature antenna, it is characterised in that: the antenna (1) includes radiation arm (2), feed minor matters (3), supply network road (31), the first feedback ground minor matters (4), the first feedback ground network (41), the second feedback ground minor matters (5) and the second feedback ground network (51)；It is described Feed one end and the radiation arm (2) connection of minor matters (3), the other end of feed minor matters (3) and the supply network road (31) it connects, one end of the first feedback ground minor matters (4) and the radiation arm (2) connection, described first presents the another of ground minor matters (4) One end and the first feedback ground network (41) connect, one end of the second feedback ground minor matters (5) and the radiation arm (2) connection, The other end of the second feedback ground minor matters (5) and the second feedback ground network (51) connect；The first feedback ground minor matters (4) use Under inductance, using under capacitor, feed minor matters (3) uses inductance and capacitor series and parallel group to the second feedback ground minor matters (5) It closes.

2. miniature antenna according to claim 1, it is characterised in that: the radiation arm (2) of the antenna (1) from feed branch It saves (3) and generates GPS resonance between the first feedback ground minor matters (4)；The radiation arm (2) of the antenna (1) from feed minor matters (3) WiFi2.4G resonance frequency is generated between the second feedback ground minor matters (5)；The radiation arm (2) of antenna (1) from feed minor matters (3) WiFi5G resonance frequency is generated to end.

3. miniature antenna according to claim 1 or 2, it is characterised in that: the supply network road (31) include inductance L1, Inductance L2, capacitor C1 and capacitor C2, the impedance position of the inductance L1 control GPS, the capacitor C1 control WiFi2.4G resonance The impedance position of frequency, the inductance L1 combine the impedance position of control GPS and WiFi2.4G resonance frequency with the capacitor C1； The impedance position of concatenated inductance L2 control WiFi5G resonance frequency, concatenated capacitor C2 make the antenna (1) in GPS and WiFi2.4G generates resonance.

4. miniature antenna according to claim 1 or 2, it is characterised in that: the first feedback ground network (41) includes electricity Hold C3, the frequency shift (FS) of the size adjustment GPS resonance of the capacitor C3；The position adjustment of the mobile first feedback ground minor matters (4) The notch depth of GPS antenna (1).

5. miniature antenna according to claim 1 or 2, it is characterised in that: the second feedback ground network (51) includes electricity Feel L3, the frequency shift (FS) of the inductance L3 modulation GPS and WiFi2.4G resonance.

6. miniature antenna according to claim 1 or 2, it is characterised in that: length, width and the height of the antenna (1) Degree is respectively 15mm, 8mm and 10mm.

7. a kind of terminal, it is characterised in that: the terminal contains described in any one of claim 1 to 6 claim Miniature antenna.