CN203434283U - Opening rectangular ring coplanar type ultra wide band microstrip antenna - Google Patents

Abstract

The utility model discloses an opening rectangular ring coplanar type ultra wide band microstrip antenna. The antenna comprises a substrate, a rectangular ring patch with a gap, an L-shape patch, an impedance matching input transmission line, a rectangular patch and an annular rectangular grounding plate with a gap. An upper surface of the substrate is provided with the rectangular ring patch with the gap, the L-shape patch, the impedance matching input transmission line, the rectangular patch and the annular rectangular grounding plate with the gap. A left end of the L-shape patch is connected with a right side of the rectangular ring patch with the gap. A bottom of the rectangular ring patch with the gap is connected with a top of the impedance matching input transmission line. A bottom of the impedance matching input transmission line is connected with a bottom of the substrate. A bottom of the annular rectangular grounding plate with the gap is connected with the bottom of the substrate. The antenna of the utility model possesses the following advantages that losses are low; a radiation characteristic is good; cost is low; the size is small; manufacturing is easy; integration is convenient to be achieved and so on.

Description

Open Rectangular Loop Coplanar UWB Microstrip Antenna

technical field

The utility model relates to an antenna, in particular to an open rectangular ring coplanar ultra-wideband microstrip antenna.

Background technique

With the application and development of wireless communication technology, spectrum becomes a very important and scarce resource. From the centimeter wave band to the millimeter wave band, many frequency bands have been developed and used in various television systems, wireless communication and surveillance systems. Due to the increase of wireless mobile communication systems operating in different frequency bands, multiple antennas need to be installed in a building to receive signals of different wireless mobile communication systems. The increase in the number of antennas will cause a series of problems, such as: increasing production costs, increasing the capacity of indoor base stations, and electromagnetic compatibility issues. Therefore, it has gradually become a trend to integrate different communication networks into one system using a small number of broadband or ultra-wideband antennas.

Microstrip antennas have many advantages such as small size, easy array arrangement, planar structure, easy integration, and conformal with the carrier. Therefore, how to develop a miniaturized, planar structure, low cost, and high-performance ultra-wideband microstrip antenna has become The key research direction of domestic and foreign scientific researchers. The frequency bands used by ultra-wideband antennas include the frequency bands of several other systems such as WiMAX and WLAN. In order to solve the problem of mutual interference between these different systems, a variety of different structures have emerged in recent years. Small planar ultra-wideband microstrip antennas with band-rejection characteristics, and these ultra-wideband microstrip antennas with great application value in civilian fields are important research topics in the field of ultra-wideband research.

Contents of the invention

In order to overcome the disadvantages of large loss and low gain in the wireless local area network in the prior art, the utility model provides an open rectangular ring coplanar ultra-wideband microstrip antenna.

In order to achieve the above object, the technical scheme of the utility model is as follows:

The open rectangular ring coplanar ultra-wideband microstrip antenna includes a substrate, a rectangular ring patch with a notch, an L-shaped patch, an impedance matching input transmission line, a rectangular patch, and a circular rectangular ground plate with a notch; the upper surface of the substrate is provided with a notch Rectangular ring patch, L-shaped patch, impedance matching input transmission line, rectangular patch, notched circular rectangular ground plane, the left end of the L-shaped patch is connected to the right side of the notched rectangular ring patch, and the notched rectangular ring patch The bottom end of the impedance matching input transmission line is connected to the top end of the impedance matching input transmission line, the bottom end of the impedance matching input transmission line is connected to the bottom end of the substrate, and the bottom end of the notched annular rectangular ground plate is connected to the bottom end of the substrate.

The substrate is made of glass fiber epoxy resin material, the length of the substrate is 40mm-45mm, and the width is 40mm-45mm. The total length of the notched rectangular ring patch is 10mm-12mm, the total width is 10mm-12mm, the patch width is 2mm-3mm, and the length of the notch on the right side is 1mm-2mm. The total length of the L-shaped patch is 5mm-10mm, the total width is 4mm-8mm, and the patch width is 2mm-3mm. The impedance matching input transmission line has a length of 6 mm to 10 mm and a width of 2 mm to 4 mm. The length of the rectangular patch is 8mm-12mm, and the width is 2mm-3mm. The circular rectangular grounding plate with notches is composed of a rectangular notch on the bottom edge of a rectangular ring, the total length of the rectangular ring is 40mm-45mm, the total width is 40mm-45mm, the patch width is 5mm-7mm, and the notch width is 4mm ~6mm.

The utility model has the advantages of low loss, good radiation characteristics, low cost, small size, easy manufacture and integration.

Description of drawings:

Fig. 1 is the front structural diagram of the coplanar UWB microstrip antenna with open rectangular rings;

Fig. 2 is the loss diagram of the coplanar UWB microstrip antenna with split rectangular rings;

Figure 3 is the E-plane radiation pattern of the open rectangular ring coplanar ultra-wideband microstrip antenna at 2.85 GHz;

Fig. 4 is the H-plane radiation pattern of the coplanar UWB microstrip antenna with open rectangular ring at 2.85 GHz;

Fig. 5 is the E-plane radiation pattern of the open rectangular ring coplanar ultra-wideband microstrip antenna at 8.3 GHz;

Fig. 6 is the H-plane radiation pattern at 8.3 GHz of the split rectangular loop coplanar ultra-wideband microstrip antenna.

Detailed ways

As shown in Figure 1, the open rectangular ring coplanar ultra-wideband microstrip antenna includes a substrate 1, a rectangular ring patch with a gap 2, an L-shaped patch 3, an impedance matching input transmission line 4, a rectangular patch 5, and a circular rectangular patch with a gap Grounding plate 6; the upper surface of substrate 1 is provided with notched rectangular ring patch 2, L-shaped patch 3, impedance matching input transmission line 4, rectangular patch 5, annular rectangular grounding plate 6 with notch, L-shaped patch 3 The left end is connected to the right side of the notched rectangular ring patch 2, the bottom end of the notched rectangular ring patch 2 is connected to the top end of the impedance matching input transmission line 4, and the bottom end of the impedance matching input transmission line 4 is connected to the bottom end of the substrate 1, The bottom end of the notched annular rectangular ground plate 6 is connected to the bottom end of the substrate 1 .

The substrate 1 is made of glass fiber epoxy resin material, the length of the substrate 1 is 40mm-45mm, and the width is 40mm-45mm. The total length of the notched rectangular ring patch 2 is 10mm-12mm, the total width is 10mm-12mm, the patch width is 2mm-3mm, and the length of the notch on the right side is 1mm-2mm. The total length of the L-shaped patch 3 is 5mm-10mm, the total width is 4mm-8mm, and the patch width is 2mm-3mm. The impedance-matched input transmission line 4 has a length of 6 mm to 10 mm and a width of 2 mm to 4 mm. The length of the rectangular patch 5 is 8mm-12mm, and the width is 2mm-3mm. The annular rectangular grounding plate 6 with notches is formed by opening a rectangular notch on the bottom edge of a rectangular ring, the total length of the rectangular ring is 40 mm to 45 mm, the total width is 40 mm to 45 mm, the patch width is 5 mm to 7 mm, and the gap width is 4mm ~ 6mm. Example 1

A glass fiber epoxy resin material with a dielectric constant of 4.4 is selected to make a microstrip substrate with a thickness of 1mm. The substrate has a length of 40 mm and a width of 40 mm. The overall length of the notched rectangular ring patch is 11mm, the overall width is 10mm, the patch width is 2mm, and the length of the notch on the right side is 2mm. The total length of the L-shaped patch is 8mm, the total width is 5mm, and the patch width is 2mm. The impedance-matched input transmission line has a length of 7mm and a width of 3mm. The rectangular patch has a length of 9mm and a width of 2mm. The circular rectangular grounding plate with notch is composed of a rectangular notch on the bottom edge of a rectangular ring. The total length of the rectangular ring is 40mm, the total width is 40mm, the patch width is 5mm, and the notch width is 4mm. The various performance indicators of the split rectangular ring coplanar ultra-wideband microstrip antenna are tested by CST software, and the loss curve obtained is shown in Figure 2. It can be seen from the figure that the working frequency bands below -10dB are 2.63GHz-4.61GHz and 7.4GHz-10.52GHz. Figure 3-4 shows the E-plane and H-plane pattern of the open rectangular ring coplanar ultra-wideband microstrip antenna at 2.85GHz. It can be seen from the figure that when the frequency is 2.85GHz, the gain is 3.6dBi, and the half-power wave The flap width is 83.6°. Figure 5-6 shows the E-plane and H-plane pattern of the open rectangular ring coplanar ultra-wideband microstrip antenna at 8.3GHz. It can be seen from the figure that when the frequency is 8.3GHz, the gain is 5.9dBi, and the half-power wave The flap width is 62.1°.

Claims (7)

1. the coplanar formula ultra-wideband microstrip antenna of opening straight-flanked ring, is characterized in that comprising substrate (1), band breach straight-flanked ring paster (2), L shaped paster (3), impedance matching input transmission line (4), rectangular patch (5), band breach annular rectangle ground plate (6); The upper surface of substrate (1) is provided with band breach straight-flanked ring paster (2), L shaped paster (3), impedance matching input transmission line (4), rectangular patch (5), band breach annular rectangle ground plate (6), the left end of L shaped paster (3) is connected with the right side of band breach straight-flanked ring paster (2), the bottom of band breach straight-flanked ring paster (2) is connected with the top of impedance matching input transmission line (4), the bottom of impedance matching input transmission line (4) is connected with the bottom of substrate (1), and the bottom of band breach annular rectangle ground plate (6) is connected with the bottom of substrate (1).

2. the coplanar formula ultra-wideband microstrip antenna of a kind of opening straight-flanked ring as claimed in claim 1, is characterized in that described substrate (1) is glass-epoxy material, and the length of substrate (1) is 40mm～45mm, and width is 40mm～45mm.

3. the coplanar formula ultra-wideband microstrip antenna of a kind of opening straight-flanked ring as claimed in claim 1, the total length that it is characterized in that described band breach straight-flanked ring paster (2) is 10mm～12mm, overall width is 10mm～12mm, and paster width is 2mm～3mm, and right side notch length is 1mm～2mm.

4. the coplanar formula ultra-wideband microstrip antenna of a kind of opening straight-flanked ring as claimed in claim 1, is characterized in that the total length of described L shaped paster (3) is 5mm～10mm, and overall width is 4mm～8mm, and paster width is 2mm～3mm.

5. the coplanar formula ultra-wideband microstrip antenna of a kind of opening straight-flanked ring as claimed in claim 1, is characterized in that the length of described impedance matching input transmission line (4) is 6mm～10mm, and width is 2mm～4mm.

6. the coplanar formula ultra-wideband microstrip antenna of a kind of opening straight-flanked ring as claimed in claim 1, is characterized in that the length of described rectangular patch (5) is 8mm～12mm, and width is 2mm～3mm.

7. the coplanar formula ultra-wideband microstrip antenna of a kind of opening straight-flanked ring as claimed in claim 1, band breach annular rectangle ground plate (6) described in it is characterized in that is opened a rectangular indentation by a straight-flanked ring base and is formed, the total length of straight-flanked ring is 40mm～45mm, overall width is 40mm～45mm, paster width is 5mm～7mm, and gap width is 4mm～6mm.

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