CN218677565U - Dual-frequency and broadband frequency reconfigurable antenna - Google Patents
Dual-frequency and broadband frequency reconfigurable antenna Download PDFInfo
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- CN218677565U CN218677565U CN202223344012.5U CN202223344012U CN218677565U CN 218677565 U CN218677565 U CN 218677565U CN 202223344012 U CN202223344012 U CN 202223344012U CN 218677565 U CN218677565 U CN 218677565U
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The utility model discloses a dual-frenquency and broadband frequency restructural antenna relates to microwave antenna technical field, the utility model discloses a: a dielectric substrate; the grounding plate is of a rectangular structure and is arranged on the back surface of the dielectric substrate; the radiation patch is of a square structure which rotates 45 degrees around the center and is arranged on the front surface of the medium substrate; the slotted microstrip feeder line is a C-shaped structure dug in the center of a rectangle, and the top end of the slotted microstrip feeder line is connected with the bottom end of the radiation patch; the L-shaped branch unit is of two L-shaped structures and is positioned on two sides of the slotted microstrip feeder line; the reconfigurable unit is an annular gap and is horizontally etched on the radiation patch. The utility model discloses can realize three kinds of mode, the frequency channel that three kinds of mode covered is 2.86-3.50GHz and 5.09-6.17GHz,2.98-3.84GHz and 4.61-5.88GHz respectively, 3.04-5.54GHz. The antenna has novel structure and small size, and has good practical value in mobile terminal communication.
Description
Technical Field
The utility model relates to a microwave antenna technical field specifically is a dual-frenquency and broadband frequency reconfigurable antenna.
Background
With the rapid development of integrated circuits, a single communication device can integrate systems supporting multiple communication frequency bands, and these communication standards use different communication frequency bands, so that an antenna with a single frequency band cannot meet the requirements of a new generation of communication devices. Several antennas covering different frequency bands can be integrated into one system, but the integration of independent antennas with different functions makes the communication device bulky, which is not in line with the development trend of communication devices. Therefore, the fact that a single antenna can work in multiple working modes in multiple expected frequency bands is a trend of antenna future development, and the reconfigurable antenna has the advantages that the working frequency of the antenna is reconfigured, and the requirement of equipment on communication in the expected frequency bands can be met while interference with other communication frequency bands is avoided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a dual-frenquency and broadband frequency restructural antenna solves in the environment of 5G, wiMAX and WLAN signal source gathering, receives the problem that other frequency channel signal interference are avoided simultaneously to required frequency channel signal. The method specifically comprises the following steps:
a dielectric substrate.
The grounding plate is of a rectangular structure and is arranged on the back surface of the dielectric substrate;
the radiation patch is of a square structure which rotates 45 degrees around the center and is arranged on the front surface of the medium substrate;
the slotted microstrip feeder line is of a rectangular structure with a C-shaped structure gap formed in the upper half part, and the top end of the slotted microstrip feeder line is connected with the bottom end of the radiation patch;
the L-shaped branch unit is of two L-shaped structures and is positioned on two sides of the slotted microstrip feeder line;
the reconfigurable unit is an annular gap and is horizontally etched on the radiation patch.
Further, the reconfigurable unit further includes:
the first PIN pipe is bridged at the center of the upper left gap of the annular gap;
the second PIN pipe is bridged at the center of the upper right gap of the annular gap;
the third PIN tube is bridged at the center of the lower left gap of the annular gap;
and the fourth PIN tube is bridged at the center of the lower right gap of the annular gap.
Further, the length of the dielectric substrate is 32mm, the width is 26mm, and the thickness is 1mm.
Further, the rectangular shape of the grounding plate is 26mm in length and 12mm in width.
Further, the side length of the square structure of the radiation patch is 14.14mm.
Further, the rectangular structure of the slotted microstrip feeder line is 11.5mm long and 3mm wide; the length of the C-shaped structure gap is 5.4mm, and the width of the C-shaped structure gap is 2.4mm.
Further, the length of the "L" -shaped branch unit is 7mm, and the width thereof is 4mm.
Furthermore, the side length of the annular gap is 9.9mm, and the width of the gap is 1.41mm.
Compared with the prior art, the utility model provides a dual-frenquency and broadband frequency restructural antenna, its beneficial effect is:
the utility model discloses constitute by square paster, a microstrip line, two "L" shape branches and knots and the defect ground of sculpture ring channel. Under the condition of not increasing the size of the antenna, the effective radiation length is increased by rotating the radiation patch, so that the bandwidth is widened, and more resonance frequency bands are introduced by etching a C-shaped groove on the feeder line; on the basis of the existing annular groove, a diode is placed in the center of each edge, and the two sides of the connecting groove are matched with the annular groove by controlling the on-off of the two groups of switches to form a V-shaped open groove to change the local structure and the surface current distribution of the antenna and realize the switching between different working frequency bands; the utility model provides a pair of dual-frenquency and broadband frequency reconfigurable antenna's compact structure, size are less, radiation performance is good, have good application prospect on platforms such as mobile portable equipment and thing networking.
Drawings
Fig. 1 is a schematic structural diagram of a dual-band and wideband frequency reconfigurable antenna provided by the present invention;
fig. 2 is a reflection coefficient curve diagram of the dual-band and wideband frequency reconfigurable antenna provided by the present invention in each operating mode;
fig. 3 is an E-plane and H-plane simulated radiation pattern of the dual-frequency and broadband frequency reconfigurable antenna provided by the present invention at 3.1 GHz;
fig. 4 is the simulated radiation pattern of the E-plane and H-plane of the dual-band and broadband frequency reconfigurable antenna provided by the present invention at 5.6 GHz;
fig. 5 is an E-plane and H-plane simulated radiation pattern of the dual-frequency and broadband frequency reconfigurable antenna provided by the present invention at 3.3 GHz;
fig. 6 is an E-plane and H-plane simulated radiation pattern of the dual-frequency and broadband frequency reconfigurable antenna provided by the present invention at 5.2 GHz;
fig. 7 is an E-plane and H-plane simulated radiation pattern of the dual-band and wideband frequency reconfigurable antenna provided by the present invention at 3.3 GHz;
in the figure: 1. the antenna comprises a dielectric substrate, a ground plate 2, a radiation patch 3, a slotted microstrip feeder 4, a C-shaped structure slot 41, an L-shaped branch unit 5, a reconfigurable unit 6, an annular slot 61, a first PIN tube 62, a second PIN tube 63, a third PIN tube 64, a fourth PIN tube 65.
Detailed Description
The following describes the present invention with reference to fig. 1 to 6. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1: as shown in fig. 1, the utility model provides a dual-frenquency and broadband frequency reconfigurable antenna, including dielectric substrate 1, ground plate 2, radiation paster 3, fluting microstrip feeder 4, "L" shape minor matters unit 5, reconfigurable unit 6, the back of dielectric substrate 1 is located to ground plate 2, radiation paster 3, fluting microstrip feeder 4, "L" shape minor matters unit 5 and reconfigurable unit 6 are located the front of dielectric substrate 1, and wherein fluting microstrip feeder 4 links to each other with the one end of radiation paster 3, and "L" shape minor matters unit 5 is located the both sides of fluting microstrip feeder 4.
The dielectric substrate 1 of the present embodiment is made of FR-4Epoxy, has a relative dielectric constant of 4.4, a loss tangent angle of 0.02, a length of 32mm, a width of 26mm, and a thickness of 1mm.
The radiation patch 3 consists of a square patch which rotates 45 degrees and etches an annular groove and a slotted microstrip feeder 4, and the side length of the annular gap is 9.9mm. The length of the C-shaped structure slot on the slotted microstrip feeder line 4 is 5.4mm, and the width of the slot is 2.4mm. The grounding plate 2 is located in the lower area corresponding to the slotted microstrip feeder line, the grounding plate 4 is a complete rectangle, the length of the rectangle is 26mm, and the width of the rectangle is 12mm. The structure of the radiation patch 3 and the ground plate 2 widens the working bandwidth, the C-shaped structure gap on the slotted microstrip feeder 4 changes the flow direction of the main current, and more working frequency points are introduced for the antenna, so that the antenna works in a double-frequency mode.
The utility model discloses reconfigurable unit 6 includes annular gap 61 and four radio frequency PIN pipes 62, 63, 64, 65 of sculpture on radiating patch 3, through the break-make of bias voltage control PIN pipe, changes the resonant length in radiation gap, and then changes antenna surface current route, makes antenna operating frequency section have reconfigurable characteristic.
The slotted microstrip feeder line 4 is a rectangle with a C-shaped structure slot etched at the upper half part, the rectangle is 11.5mm long and 3mm wide, the C-shaped structure slot is 5.4mm long and 2.4mm wide as a whole, and the slot width is 0.4mm, and the slotted microstrip feeder line 4 feeds power with the grounding plate 2 through the excitation port, so that the high-frequency coverage range under the dual-frequency working state can be adjusted, resonance is generated, electromagnetic waves are radiated outwards, and the 5G frequency band of the WLAN is covered.
The side length of an annular gap in the reconfigurable unit 6 is 9.9mm, and the width of the gap is 1.41mm.
The four radio frequency PIN tubes 62, 63, 64 and 65 of the utility model are PIN diodes with the same model, wherein the first PIN tube 62 is bridged at the center of the upper left gap of the annular gap 61, and the positive pole of the PIN tube faces the outside of the annular gap; the second PIN pipe 63 is bridged at the center of the upper right gap of the annular gap 61, and the positive pole of the PIN pipe faces the outer side of the annular gap; the third PIN tube 64 is bridged at the center of the lower left gap of the annular gap 61, and the positive pole of the PIN tube faces the inner side of the annular gap; the fourth PIN tube 65 is bridged at the center of the lower right gap of the annular gap 61, and the positive pole of the PIN tube faces the inner side of the annular gap.
In order to explain further the utility model discloses a good performance of dual-frenquency and broadband frequency reconfigurable antenna utilizes simulation software right the utility model discloses the antenna has carried out the modeling simulation of radio frequency characteristic.
Referring to fig. 1, the present invention provides a reflection coefficient (S) for the antenna in three operation modes 11 ) And (5) performing simulation. The PIN transistors are switched on to be "1", the switched off to be "0", the states of the four PIN transistors in the dual-frequency mode 1 are 0011, the states of the four PIN transistors in the dual-frequency mode 2 are 1100, the states of the four PIN transistors in the broadband mode are 0000, and the simulation result is shown in fig. 2.
The utility model discloses a monopole antenna structure, antenna basis resonance center frequency is relevant with monopole antenna's length, as shown in formula (1). In order to cover a 5G frequency band, selecting 4GHz as the central frequency, and calculating the length of the monopole antenna to enable the antenna to work at 3.24-5.98GHz; on the basis, the slotted microstrip feed line 4 and the C-shaped structure slot 41 are adopted, so that the antenna can generate a high-frequency resonance point, and the center frequency of the resonance point is related to the length of the C-shaped structure slot 41, as shown in the formula (2). By adjusting the length of the C-shaped structure slot 41, the antenna works at 5.09-6.17GHz and accurately covers the 5G frequency band of the WLAN.
The utility model discloses a make the user can receive required frequency channel signal in the environment of 5G, wiMAX and WLAN signal source gathering, avoid other frequency channel signal interference, through the break-make of PIN pipe in the control annular gap 61, change the resonance length in radiation gap, and then change antenna surface current route, realize the reconfigurable characteristic of antenna between two kinds of dual bands and broadband.
The on and off states are realized by controlling the direct current bias voltage loaded at the two ends of the PIN tube. When the antenna needs to work in a 5G frequency band, the diodes are all controlled to be in a cut-off state through direct current bias voltage, so that the antenna works in a broadband 3.04-5.54GHz frequency band; when the antenna needs to work in a WLAN frequency band, the first PIN tube 62 and the second PIN tube 63 are controlled to be in a cut-off state through direct-current bias voltage, and the third PIN tube 64 and the fourth PIN tube 65 are controlled to be in a conducting state, so that the antenna works in dual-frequency bands of 2.86-3.50GHz and 5.09-6.17 GHz; when the antenna needs to work in a WiMAX frequency band, the first PIN tube 62 and the second PIN tube 63 are controlled to be in a conducting state through direct current bias voltage, and the third PIN tube 64 and the fourth PIN tube 65 are controlled to be in a stopping state, so that the antenna works in dual-frequency bands of 2.98-3.84GHz and 4.61-5.88 GHz.
Referring to fig. 3-7, simulated radiation patterns of the antenna at 3.1GHz and 5.6GHz in dual-band mode 1, 3.3GHz and 5.2GHz in dual-band mode 2, and 3.3GHz in broadband mode, respectively. It can be seen from the figure that the directional radiation characteristic of the shape of the Chinese character '8' is presented in the directional diagram of the E surface (YOZ surface); the omnidirectional radiation characteristic is provided in the H surface (XOZ surface).
The simulation analysis shows that the antenna radiation patch of the utility model has simple design, novel structure and smaller size; the on-off of the PIN tube is controlled through the direct-current bias voltage, the resonance length of the annular gap on the radiating patch is changed, and the working mode of the antenna can be further controlled, so that the working mode of the antenna can be adjusted in the environment of 5G, wiMAX and WLAN signal source aggregation according to requirements, the required frequency band signal is received, the signal interference of other frequency bands is avoided, the communication efficiency is effectively improved, and the reconfiguration between two kinds of double frequency bands and a wide frequency band is realized. In addition, the utility model has good radiation characteristic and higher use value.
Claims (8)
1. A dual-band and wideband frequency reconfigurable antenna, comprising:
a dielectric substrate (1);
the grounding plate (2) is of a rectangular structure and is arranged on the back surface of the dielectric substrate (1);
the radiation patch (3) is of a square structure which rotates 45 degrees around the center and is arranged on the front surface of the medium substrate (1);
the slotted microstrip feeder line (4) is of a rectangular structure with a C-shaped structure slot (41) formed in the upper half part, and the top end of the slotted microstrip feeder line is connected with the bottom end of the radiation patch (3);
the L-shaped branch unit (5) is of two L-shaped structures and is positioned at two sides of the slotted microstrip feeder line (4);
the reconfigurable unit (6) is an annular gap (61) and is horizontally etched on the radiation patch (3).
2. The dual-band and wideband frequency reconfigurable antenna according to claim 1, characterized in that the reconfigurable unit (6) further comprises:
the first PIN tube (62) is bridged at the center of the upper left gap of the annular gap (61);
the second PIN pipe (63) is bridged at the center of the upper right gap of the annular gap (61);
the third PIN pipe (64) is bridged at the center of the lower left gap of the annular gap (61);
and the fourth PIN pipe (65) is bridged at the center of the lower right gap of the annular gap (61).
3. The dual-band and wideband frequency reconfigurable antenna of claim 1, wherein:
the length of the medium substrate (1) is 32mm, the width is 26mm, and the thickness is 1mm.
4. The dual-band and wideband frequency reconfigurable antenna of claim 1, wherein:
the rectangular shape of the grounding plate (2) is 26mm in length and 12mm in width.
5. The dual-band and wideband frequency reconfigurable antenna of claim 1, wherein:
the side length of the square structure of the radiation patch (3) is 14.14mm.
6. The dual-band and wideband frequency reconfigurable antenna of claim 1, wherein:
the rectangular structure of the slotted microstrip feeder line (4) is 11.5mm long and 3mm wide; the length of the C-shaped structure gap (41) is 5.4mm, and the width is 2.4mm.
7. The dual-band and wideband frequency reconfigurable antenna of claim 1, wherein:
the length of the L-shaped branch unit (5) is 7mm, and the width is 4mm.
8. The dual-band and wideband frequency reconfigurable antenna of claim 1, wherein:
the side length of the annular gap (61) is 9.9mm, and the gap width is 1.41mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223344012.5U CN218677565U (en) | 2022-12-13 | 2022-12-13 | Dual-frequency and broadband frequency reconfigurable antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223344012.5U CN218677565U (en) | 2022-12-13 | 2022-12-13 | Dual-frequency and broadband frequency reconfigurable antenna |
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| CN218677565U true CN218677565U (en) | 2023-03-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116231300A (en) * | 2023-05-04 | 2023-06-06 | 湖南大学 | 1bit broadband radiation type reconfigurable unit and beam scanning array antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116231300A (en) * | 2023-05-04 | 2023-06-06 | 湖南大学 | 1bit broadband radiation type reconfigurable unit and beam scanning array antenna |
| CN116231300B (en) * | 2023-05-04 | 2023-11-17 | 湖南大学 | 1bit broadband radiation type reconfigurable unit and beam scanning array antenna |
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