CN2401997Y - Double frequency band top sucked antenna - Google Patents

Abstract

The utility model relates to a double frequency band top sucked antenna, which comprises a vibrator and a reflecting plate. The double frequency band top sucked antenna is characterized in that the vibrator and the reflecting plate are fixedly connected by screws and studs. The utility model has the advantages of small volume, beautiful appearance, light weight, easy engineering installation, harmony with environment, etc; the double frequency band top sucked antenna also keeps one eye on the development of a GSM system, and can be used for a DCS1800 system.

Description

The two-band ceiling mount antenna

The utility model belongs to the indoor ceiling mount antenna that a kind of mobile communication system is used.

Develop at a too fast speed owing to cellular mobile communication in China, make the construction and the network operator of system have no time to attend to little " blind area " for many years always, and attentiveness is placed on always in the dilatation and big " blind area " of system, and the quantity of by chance little " blind area " is much more, such as: in market place builet below the ground, parking lot, the building, tunnel, subway, station, harbour, airport etc., be seen everywhere.Simultaneously, because the continuous expansion of system will be adopted microcellulor technology (a lot of cities have begun to adopt in fact) in the compact district, down town, make the quantity of indoor " blind area " roll up.In this year, along with increasingly sharpening of market competition, the quality of network quality more and more is subjected to system operator and user's attention.The network operators of China's cellular mobile communication have begun addressing its little " blind area " covering problem, and existing " blind area " soverlay technique to be original outdoor covering basically be transplanted to indoor covering, Fig. 1 is the prior art exemplary block diagram, its shortcoming is as follows:

1, with high-power direct amplification machine (2W-20W does not wait usually), the cell frequency planning with the heavy damage network is unfavorable for the optimization of (being harmful to) network.

2, domestic aerial separates with amplifier, is unfavorable for improving the signal to noise ratio of system, original base station is produced disturb inevitably.

3, antenna for mobile phone is used for indoor covering, and antenna gain is low, is unfavorable for improving the signal to noise ratio of system.

4, antenna for mobile phone or other antenna are used for indoor covering, and inconvenience is installed, and profile is not attractive in appearance, and difficult and interior decoration is coordinated.

5, antenna for mobile phone or other antenna only work in one-segment usually, are unfavorable for the upgrading of system.

The purpose of this utility model provides the indoor ceiling mount antenna that a kind of mobile communication system is used, and solves the mobile communication indoor covering problem.

The utility model comprises oscillator and reflecting plate, uses screw, double-screw bolt fixed connection between oscillator and the reflecting plate.The anti-build-out resistor of handicapping on the oscillator, the reflecting plate front is provided with SMA female joint seat.

It is little that the utility model possesses volume, and good looking appearance is in light weight, is easy to project installation, and with environmental harmony, dual-band antenna has also been taken into account the development of gsm system, can be used for advantages such as DCS1800 system.

Accompanying drawing 1 is the prior art theory diagram;

Accompanying drawing 2 is this real new structure schematic diagram;

Accompanying drawing 3 is the oscillator front schematic view;

Accompanying drawing 4 is an oscillator reverse side schematic diagram;

Accompanying drawing 5 is the reflecting plate front schematic view;

Accompanying drawing 6 is a reflecting plate reverse side schematic diagram;

Accompanying drawing 7 is little band plate Vertial directional pattern;

Accompanying drawing 8 is little band plate Horizontal directional pattern.

As shown in Figure 2, the utility model comprises oscillator (1) and reflecting plate (2), uses screw (3), double-screw bolt (4) fixed connection between oscillator (1) and the reflecting plate (2).

As shown in Figure 3, Figure 4, (1) four angle of oscillator connects the anti-build-out resistor of last handicapping (11) with screw (3) and reflecting plate.

As Fig. 5, shown in Figure 6, reflecting plate (2) is provided with SMA female joint seat (21).

The utility model adopts micro-band technique, antenna volume is narrowed down to minimum, be of a size of 10 * 10 * 3CM, weight is 150g, simultaneously the standing-wave ratio of two frequency range 790 ~ 960MHZ and 1710 ~ 1990MHZ is adjusted to satisfy the actual use of engineering (≤1.5dB), according to Theoretical Calculation and actual result,, can reach the technical indicator of this antenna as long as little band plate satisfies Fig. 7, data that Fig. 8 gives:

Frequency range: 790 ~ 960MHZ

1710~1990MHZ

Gain: 2dBd (4.1dBi)

Standing-wave ratio :≤1.4 (representative values 1.2)

Polarised direction: vertical linearity

Power capacity: 100W

Front and back ratio: 〉=14dB

RF joint: SMA-F or customer requirements

Claims (4)

1, a kind of two-band ceiling mount antenna comprises oscillator and reflecting plate, it is characterized in that between oscillator and the reflecting plate with using screw, double-screw bolt fixed connection.

2, a kind of two-band ceiling mount antenna according to claim 1 is characterized in that the anti-build-out resistor of handicapping on the oscillator, and the reflecting plate front is provided with SMA female joint seat.

3, a kind of two-band ceiling mount antenna according to claim 1, it is characterized in that being of a size of 10 * 10 * 3CM, weight is 150g, simultaneously the standing-wave ratio of two frequency range 790 ~ 960MHZ and 1710 ~ 1990MHZ is adjusted to satisfy the actual use of engineering (≤1.5dB).

4, a kind of two-band ceiling mount antenna according to claim 1 is characterized in that its technical indicator is

Frequency range: 790 ~ 960MHZ

1710~1990MHZ

Gain: 2dBd (4.1dBi)

Standing-wave ratio :≤1.4 (representative values 1.2)

Polarised direction: vertical linearity

Power capacity: 100W

Front and back ratio: 〉=14dB

RF joint: SMA-F or customer requirements

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