WO2005043777A1

WO2005043777A1 - A quincunx covered antenna array

Info

Publication number: WO2005043777A1
Application number: PCT/CN2004/001098
Authority: WO
Inventors: Shihai Lu
Original assignee: Shihai Lu
Priority date: 2003-10-31
Filing date: 2004-09-27
Publication date: 2005-05-12
Also published as: CN1540800A

Abstract

The present invention relates to a quincunx covered antenna array. The technology problem to be resolved is to provide a antenna array which is smaller interference and higher frequency resource availability. The solution of the present invention is: setting at least a group of antennas in the upright direction of base-station; setting at least a receiving antenna and a transmitting antenna in each soup of antennas ; in a horizontal area acrossing area C of the base-station antenna array, each group of receiving antennas divides sector B which centre of circle is C and the angle is a into at least a smaller sector, and a covered area of receiving antenna beam mainlobe covers substantially a corresponding receiving small sector, two adjacent covered areas of the receiving antenna beam mainlobes are overlapped each other partly; each group of transmitting antennas divides sector B which centre of circle is C and the angle is a into at least a smaller sector, a covered area of transmitting antenna beam mainlobe covers substantially a corresponding transmitting small sector, two adjacent covered areas of transmitting antenna beam mainlabes are overlapped each other partly. The present invention is used for a wireless communication system.

Description

Antenna array with plum blossom coverage

The invention relates to an antenna array, in particular to an antenna array with a plum blossom coverage. It is applicable to wireless communication systems, especially mobile and PHS wireless local telephones and other base stations that do not perform wireless communication with each other and perform wireless communication with third-party wireless communication equipment (such as mobile phones and PHS wireless local telephones). Background technique

The rapid development of modern wireless communications, mobile, PHS wireless local calls, etc. have entered millions of households, and traditional omnidirectional base stations are equipped with adaptive array antennas (the adaptive array antenna is hereinafter referred to as "AAA" antenna, as shown in Figure 1) Each transmit and receive antenna uses the same polarization, same gain, and the same omnidirectional coverage; traditional directional antennas (shown in Figure 2) each receive and transmit antenna in the array also use the same polarization and the same Gain, same directional coverage. The base stations described in this article are the general term for the sum of the various base stations in the antenna array area C, that is, the base stations in the antenna array area related to the geographical base C. The above two types of base station antenna arrays have shortcomings when setting up a wireless communication network. The disadvantages are the interference between co-frequency and adjacent frequency co-polarized base stations and the low utilization of frequency resources, which is not conducive to third-party wireless communication equipment ( Low-emission environmentally friendly products such as mobile phones.

In the prior art, a Chinese invention patent application (application number: 98808479.1) discloses a sectorization technology for a cellular CDMA system. Each sectorized service cell (CELL) in the CDMA system includes a multi-cell Antenna sectors (AS1-AS8), each serving cell is assigned multiple different pilot channels (Pl, P2). Two antenna sectors with a common overlap area are not allowed to use the same pilot channel. At least one of the pilot channels (Pl, P2) is multiplexed in the serving cell by at least two antenna sectors without a common overlapping area. The antenna sectors using the same pilot signal constitute a logical sector. The aforementioned disadvantages still exist in this prior art. Summary of the invention The technical problem to be solved by the present invention is to provide an improved antenna array, that is, an antenna array with a plum blossom coverage, so that the receiving antenna and the transmitting antenna within the coverage area of the same base station can determine which pole to use according to the interference situation of the wireless network. According to the transmission power of third-party wireless communication equipment such as mobile phones, the gain of the base station receiving and transmitting antennas is determined in a standardized manner, thereby reducing interference between the same frequency and adjacent frequency co-polarized base stations, improving frequency resource utilization, and facilitating Low-emission environmental protection products for third-party wireless communication equipment such as high-quality wireless networks and low-power mobile phone applications.

The technical scheme adopted by the present invention is: an antenna array with a plum blossom type is characterized in that at least one group of antennas is provided in the vertical direction of the base station; each group of antennas is provided with at least one receiving antenna R1 (to Rn), and at least one Transmitting antenna T1 (to Tm); both the receiving antenna and the transmitting antenna are installed in the base station antenna array area C. (Because area C is only one point in the figure, the receiving and transmitting antennas are not shown in the figure. In a horizontal plane passing through the base station antenna array area C, each group of receiving antennas divides the sector B with C as the center and an angle α into at least one small sector RB1 (to RBn), and a receiving antenna lobe main The coverage area RL1 (to RLn) of the lobe basically covers one receiving sector RBI (to RBn). The coverage of the main lobe of two adjacent receiving antenna lobes is partially superimposed. The superimposed area is RA1 (to RAn). ; Each group of transmitting antennas divides sector B with C as the center and angle α into at least one small sector TBI (to TBm). The coverage area TL1 (to TLm) of the main lobe of a transmitting antenna basically covers one. hair Small sector TBI (to TBm), the coverage of the main lobe of two adjacent transmitting antennas is partially superimposed, and the superimposed area is TA1 (to TAm); the sector corresponding to each transmitting antenna and an integer number of receiving antennas The corresponding sectors are the same.

Each group of transmitting antennas has only one directional transmitting antenna T and at least one directional receiving antenna R1 (to Rn), and the sector corresponding to a transmitting antenna is a sector B whose center is C and the angle is 00 <α <3600. The coverage area TL of the main lobe of the transmitting antenna basically covers the corresponding sector B; at least one directional receiving antenna R1 (to Rn) divides the sector B with C as the center and an angle of 00 <α <3600 into at least one small Sector RB1 (to RBn), the coverage area RL1 (to RLn) of the main lobe of a receiving antenna basically corresponds to one receiving sector RBI (to RBn), and two adjacent receiving directional antenna lobe main lobe The coverage area is partially superimposed, and the superimposed area is RA1 (to RAn). There is only one transmitting antenna in each group, which is an omnidirectional antenna T and at least two directional receiving antennas R1 and R2 (to Rn). The sector of a corresponding transmitting antenna is centered on C and the angle is α = 3600. Sector B, the coverage area of the main lobe of the transmitting antenna basically covers sector B with a corresponding angle of α = 3600; at least two directional receiving antennas R1, R2 (to Rn) in each group have C as the center of the circle, and the angle is α The sector B of 3600 is divided into at least two small sectors RB1, RB2 (to RBn), and the coverage area RL1 (to RLn) of the main lobe of a receiving antenna basically corresponds to a small receiving sector RBI (to RBn). The coverage of the main lobe of two adjacent receiving directional antenna lobes is partially superimposed, and the superimposed area is RA1 (to RAn).

Each group of transmission antennas has at least two directional transmission antennas T1 and T2 (to Tm). The transmission antenna divides sector B with C as the center and an angle of 00 <α <3600 into at least two small sector TB1. TB2 (to TBm), the coverage area of the main lobe of a transmitting antenna lobe TL1 (to TLm) basically covers a transmitting small sector TBI (to TBm), the coverage of the main lobe of two adjacent directional transmitting antenna lobe The range is partially superimposed, and the superimposed area is TA1 (to TAm); at least two directional receiving antennas R1, R2 (S Rn) of each group divide the sector B with C as the center and the angle 00 <α <3600 into at least Two small sectors RB1, RB2 (to RBn), the coverage area RL1 (to RLn) of the main lobe of a receiving antenna basically covers one receiving sector RB1 (to RBn), and two adjacent receiving directional antennas The coverage of the main lobe is partially superimposed, and the superimposed area is RA1 (to RAn).

Each group of transmitting antennas has at least two directional transmitting antennas T1, T2 (to Tm), and the transmitting antenna divides the sector B with C as the center and an angle of α = 3600 into at least two small sectors TB1 and TB2. (To TBm), the coverage area TL1 (to TLm) of the main lobe of one transmitting antenna basically corresponds to one transmitting sector TBI (to TBm). The coverage of the main lobe of two adjacent transmitting antenna lobes is Partially superimposed, the superimposed area is TA1 (to TAm); at least two directional receiving antennas R1, R2 (to Rn) of each group divide the sector B with C as the center and the angle α = 3600 into at least two small sectors RB1, RB2 (to RBn), the coverage area of the main lobe of a receiving antenna lobe RL1 (to RLn) basically covers one receiving sector RB1 (to RBn), and The coverage area is partially superimposed, and the superimposed area is RA1 (to RAn).

The two antennas of the lobe main lobe which is symmetrical with the 180-degree axis of the C point may be the same antenna. The receiving antenna according to the present invention uses a horizontally polarized antenna, and the transmitting antenna uses a vertically polarized antenna. Another method is to use a vertically polarized antenna for the receiving antenna and a horizontally polarized antenna for the transmitting antenna. It may also be a horizontally polarized antenna for the receiving antenna and a horizontally polarized antenna for the transmitting antenna. It is also possible to use a vertically polarized antenna for the receiving antenna and a vertically polarized antenna for the transmitting antenna.

The beneficial effects of the present invention are: the improved plum-shaped antenna array can enable the receiving antenna and the transmitting antenna in the coverage area of the same base station to determine whether to adopt vertical polarization or horizontal polarization according to the interference situation of the wireless network. The transmit power of wireless communication equipment, such as a mobile phone, is determined by using the gain of the antenna, and the method is used with the same polarization and different gains or different polarizations with the same gain or different polarizations with different gains; so as to reduce the same frequency and the same frequency of adjacent frequencies. The purpose of reducing interference between base stations and improving the utilization of frequency resources is beneficial to the application of low-emission environmental protection products of third-party wireless communication equipment, that is, the application of high-quality wireless networks and low-power mobile phones. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a horizontal plane coverage diagram of a lobe of a prior art adaptive array antenna (AAA array antenna). FIG. 2 is a horizontal plane coverage diagram of a main lobe of a directional antenna lobe of the prior art.

FIG. 3 is a horizontal plane coverage diagram of a main lobe of an antenna lobe according to the first embodiment of the present invention.

FIG. 4 is a horizontal plane coverage diagram of the main lobe of the antenna lobe according to the second embodiment of the present invention.

FIG. 5 is a horizontal plane coverage diagram of a main lobe of an antenna lobe according to a third embodiment of the present invention.

FIG. 6 is a horizontal plane coverage diagram of a main lobe of an antenna lobe according to a fourth embodiment of the present invention. detailed description

In the first embodiment, as shown in FIG. 3, a plurality of groups of antennas are provided in a vertical direction of a base station. In this example, one directional transmitting antenna T and a plurality of directional receiving antennas R1 to Rn are provided in each group of antennas. Both the antenna and the transmitting antenna are installed in the base station antenna array area C. (Because area C is only a point in the figure, the transmitting antenna 1 \ receiving antennas R1 to Rn are not shown in the figure. In the horizontal plane of the base station antenna array area C, the sector corresponding to the transmitting antenna T is centered on C and the angle is 00 <α <3600 The fan area B of the main lobe of the transmission antenna lobe basically covers the corresponding fan surface B. The multiple directional receiving antennas R1 to Rn divide the fan surface B with C as the center and an angle of 00 <α <3600. Small sectors RB1 to RBn, the coverage areas RL1 to RLn of the main lobe of a receiving antenna basically correspond to one receiving sector RB1 to RBn, and the coverage of the main lobe of two adjacent receiving directional antenna lobe is partially Superimposed, the superimposed area is RA1 to RAn. In this example, the sector corresponding to a transmitting antenna is the same as the sector corresponding to an integer number of receiving antennas.

In the second embodiment, as shown in FIG. 4, several groups of antennas are provided in the vertical direction of the base station. In this example, one omnidirectional transmitting antenna T and multiple directional receiving antennas R1 to Rn are provided in each group of antennas. Both the transmitting antenna and the transmitting antenna are installed in the base station antenna array area C. (Because area C is only one point in the figure, the transmitting antenna 1 \ receiving antennas R1 to Rn are not shown in the figure. In the horizontal plane passing through the base station antenna array area C, the sector corresponding to the transmitting antenna T is the sector B with C as the center and the angle α = 3600, which is a circular surface, and the coverage area of the main lobe of the transmitting antenna is basically Covers the corresponding circular surface; and multiple directional receiving antennas R1 to Rn divide the sector B (also a circular surface) with C as the center and an angle of α = 3600 into several small sectors RB1 to RBn, a receiving antenna wave The coverage areas RL1 to RLn of the main lobe of the lobe basically cover one receiving sector RB1 to RBn. The coverage areas of the main lobe of two adjacent receiving directional antenna lobes are partially superimposed, and the superimposed areas are RA1 to RAn. In this example, the sector corresponding to a transmitting antenna is the same as the sector corresponding to an integer number of receiving antennas.

In the third embodiment, as shown in FIG. 5, a plurality of groups of antennas are provided in the vertical direction of the base station. In this example, a plurality of directional transmitting antennas T1 to Tm and a plurality of directional receiving antennas R1 to Rn are provided in each group of antennas. The receiving antenna and the transmitting antenna are both installed in the base station antenna array area C. (Because area C is only one point in the figure, the transmitting antennas T to Tm and the receiving antennas R1 to Rn are not shown in the figure. In a horizontal plane passing through the antenna array area C of the base station, multiple transmitting antennas divide sector B with C as the center and an angle of 00 <α <3600 into several small sectors TBI to TBm, and a transmitting antenna. The coverage areas TL1 to TLm of the main lobe of the lobe basically cover the corresponding small fan sectors TBI to TBm. The coverage of the main lobe of two adjacent transmitting directional antenna lobe is partially superimposed, and the superimposed area is TA1 to TAm; and Multiple directional receiving antennas R1 to Rn divide sector B with C as the center and an angle of 00 <α <3600 as Several small sectors RBI to RBn, the coverage areas RL1 to RLn of the main lobe of a receiving antenna basically cover one receiving sector RB1 to RBn, and the coverage of the main lobe of two adjacent receiving directional antenna lobe is Partially superimposed, the superimposed area is RA1 to An. The sector corresponding to each transmitting antenna is the same as the sector corresponding to an integer number of receiving antennas.

In the fourth embodiment, as shown in FIG. 6, a plurality of groups of antennas are provided in the vertical direction of the base station. In this example, a plurality of directional transmitting antennas T1 to Tm and a plurality of directional receiving antennas R1 to Rn are provided in each group of antennas. The receiving antenna and the transmitting antenna are both installed in the base station antenna array area C. (Because area C is only one point in the figure, the transmitting antennas T to Tm and the receiving antennas R1 to Rn are not shown in the figure. In a horizontal plane passing through the base station antenna array area C, the transmitting antenna divides the sector surface B (that is, the circle surface) with C as the center and an angle of α = 3600 into a plurality of small sectors T1, to TBm. The coverage areas TL1 to TLm of the main lobe of the antenna lobe basically cover one transmitting sector TBI to TBm. The coverage areas of the main lobe of two adjacent sending antenna lobe are partially superimposed, and the superimposed area is TA1 to TAm; and Multiple receiving antennas R1 to Rn divide the sector B (also a circular surface) with C as the center and an angle of α = 3600 into several small sectors RB1 to RBn. The coverage area L1 of the main lobe of a receiving antenna lobe To RLn Basic Coverage Pair Receiving a small fan to RBI RJBn, the coverage of two adjacent receiving antenna lobe main lobe partially superimposed, superimposed area A1 to RAn. The sector corresponding to each transmitting antenna is the same as the sector corresponding to an integer number of receiving antennas.

The two antennas of the lobe main lobe which is symmetrical to the 180-degree axis of the C point may be the same antenna. According to the distribution characteristics of the main lobe of the polarized antenna, for example, when some horizontally polarized half-wave oscillators are used as antennas, the main lobe of the lobe has an "8" shape distribution. When the main lobe of the two antennas is 180 with respect to the C point, When the degree of axis symmetry is in accordance with the distribution characteristics of the main lobe of the horizontally polarized half-wave oscillator, an antenna of the horizontally-polarized half-wave oscillator can be used instead, which can save equipment costs.

The invention enables the receiving antenna and the transmitting antenna in the coverage area of the same base station to use antennas with different polarizations respectively. For example, the receiving antenna uses a horizontally polarized antenna and the transmitting antenna uses a vertically polarized antenna. The receiving antenna uses a vertically polarized antenna, and the transmitting antenna uses a horizontally polarized antenna. The receiving antenna uses a horizontally polarized antenna, and the sending antenna uses a horizontally polarized antenna. The receiving antenna uses a vertically polarized antenna, and the transmitting antenna uses Vertically polarized antenna.

The present invention can make a high-quality symmetrical coverage, that is, the reception level of a base station is the same as that of a third-party wireless communication device (such as a mobile phone) under normal transmission. The antenna data is calculated to obtain ProdBml = ProdBm2

ProdBml = PtdBm2 + GtdB2 + GrdBl-LftdB2-LfrdBl-LbtdB2-LbrdBl-LsdB

ProdBm2 = PtdBml + GtdBl + GrdB2-LftdBl-LfrdB2-LbtdBl-LbrdB2-LsdB where:

ProdBml is the base station receive power level GrdBl is the base station receive antenna gain

LfrdBl is the base station receiving feeder attenuation LbrdBl is the base station receiving shunt system attenuation PtdBml is the base station transmitting power level GtdBl is the base station transmitting antenna gain

LftdBl is the attenuation of the base station transmitting feeder LbtdBl is the attenuation of the base station transmitting shunt system PtdBm2 is the third device transmitting power level GtdB2 is the third device transmitting antenna gain

LftdB2 is the loss of the third device's transmitting feeder LbtdB2 is the loss of the third device's transmitting shunt system LfrdB2 is the loss of the third device's receiving feeder ProdBm2 is the third device's receiving power level GrdB2 is the third device's receiving antenna gain LbrdB2 is the attenuation of the receiving device shunt system of the third device. LsdB is the free-space propagation attenuation.

Claims

Rights request

1. An antenna array covered with a plum blossom type, characterized in that: at least one set of antennas is provided in the vertical direction of the base station; each set of antennas is provided with at least one receiving antenna R1 (to Rn), and at least one transmitting antenna T1 (to Tm); both the receiving antenna and the transmitting antenna are installed in the base station antenna array area C. (Because area C is only one point in the figure, the receiving and transmitting antennas are not shown in the figure.) In a horizontal plane passing through the base station antenna array region C, each group of receiving antennas divides the sector B with C as the center and the angle α into at least one small sector RB1 (to RBn), and the coverage of the main lobe of the receiving antenna lobe Area RL1

(To RLn) basic coverage corresponds to a small receiving sector RB1 (to RBn). The coverage of the main lobe of two adjacent receiving antenna lobes is partially superimposed, and the superimposed area is A1 (to RAn); each group transmits The antenna divides sector B with C as the center and angle α into at least one small sector TBI (to TBm). The coverage area TL1 (to TLm) of the main lobe of a transmitting antenna basically covers a corresponding small sector TBI

(To TBm), the coverage area of the main lobe of two adjacent transmitting antennas is partially superimposed, and the superimposed area is TA1 (to TAm) _; the sector corresponding to each transmitting antenna and the sector corresponding to an integer number of receiving antennas the same.

2. The antenna array with a plum-shaped coverage according to claim 1, wherein each group of transmitting antennas has only one directional transmitting antenna T and at least one directional receiving antenna R1 (to Rn), and one transmitting The sector corresponding to the antenna is centered at C and the angle is

Sector B, the coverage area TL of the main lobe of the transmitting antenna basically covers the corresponding sector B; at least one directional receiving antenna R1 (to Rn) has sector B with C as the center and an angle θθ < _α <360 ⁽⁾ Divided into at least one small sector RB1 (to RBn), the coverage area RL1 (to RLn) of the main lobe of a receiving antenna basically covers one receiving sector RB1 (to RBn), and two adjacent receiving directional antennas The coverage of the main lobe is partially superimposed, and the superimposed area is RA1 (to RAn).

3. The antenna array with a plum-shaped coverage according to claim 1, wherein: there is only one transmitting antenna in each group, which is an omnidirectional antenna T and at least two directional receiving antennas R1, R2 (¾ Rn) The sector corresponding to a transmitting antenna is sector B with C as the center and the angle o ^ SSO ^, and the coverage area of the main lobe of the transmitting antenna basically covers sector B corresponding to the angle c SSC ⁵ ; at least two in each group Directed mail The antennas R1 and R2 (to Rn) divide the sector B with C as the center and an angle of a = 360 ^Q into at least two small sectors RB1, RB2 (to RBn), and a coverage area RL1 of the main lobe of the receiving antenna lobe The basic coverage (to RLn) corresponds to a small receiving sector RBI (to RBn). The coverage of the main lobe of two adjacent receiving directional antenna lobes is partially superimposed, and the superimposed area is RA1 (to RAn).

4. The antenna array covered by a plum blossom according to claim 1, characterized in that: each of the group of transmitting antennas has at least two directional transmitting antennas T1, T2 (to Tm), and the transmitting antenna is centered on C The sector B with an angle of (^ οΚΒόΟ ^) is divided into at least two small sectors TB1, TB2 (to TBm), and the coverage area TL1 (to TLm) of the main lobe of a transmitting antenna basically covers a corresponding small sector TBI.

(To TBm), the coverage areas of the main lobe of two adjacent directional transmitting antennas are partially overlapped, and the superimposed area is TA1 (to TAm); at least two directional receiving antennas R1, R2 (to Rn) of each group Sector B with C as the center and an angle of 0 ^Q <o: <3600 is divided into at least two small sectors RB1, RB2 (to RBn), and the coverage area RL1 (to RLn) of the main lobe of a receiving antenna is basically The coverage corresponds to a small receiving sector RB1 (to RBn). The coverage of the main lobe of two adjacent receiving directional antenna lobes is partially superimposed, and the superimposed area is RA1 (to RAn).

5. The antenna array with a plum blossom type according to claim 1, characterized in that: each of the group of transmitting antennas has at least two directional transmitting antennas T1, T2 (to Tm), and the transmitting antenna uses C as The sector B with a circle center and an angle of α = 360 ^° is divided into at least two small sectors TB1, TB2 (to TBm), and the coverage area TL1 (to TLm) of the main lobe of a transmitting antenna basically covers a corresponding small sector. TBI

(To TBm), the coverage of the main lobe of two adjacent transmitting antennas is partially superimposed, and the area of overlap is TA1 (to TAm); at least two directional receiving antennas R1, R2 (to Rn) of each group The sector B with C as the center and the angle ο ^ ΒόΟ ^ is divided into at least two small sectors RB1, RB2 (to RBn), and the coverage area RL1 (to RLn) of the main lobe of a receiving antenna basically covers one receiver. The small fan surface RB1 (to RBn), the coverage of the main lobe of two adjacent receiving antenna lobes is partially superimposed, and the superimposed area is RA1

(To RAn).

6. The antenna array with a plum-shaped cover according to claim 1 or 2 or 3 or 4 or 5, characterized in that: the two antennas of the main lobe of the lobe 180-axis symmetrical with respect to the point C can be the same antenna.

7. The antenna array covered by a plum blossom according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein the receiving antenna is a horizontally polarized antenna, and the transmitting antenna is a vertically polarized antenna. .

8. The antenna array covered by a plum blossom according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein: the receiving antenna is a vertically polarized antenna, and the transmitting antenna is a horizontally polarized antenna.

9. The antenna array covered by a plum blossom according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein the receiving antenna is a horizontally polarized antenna, and the transmitting antenna is a horizontally polarized antenna.

10. The antenna array covered by a plum blossom according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein the receiving antenna is a vertically polarized antenna, and the transmitting antenna is a vertically polarized antenna.