CN201562745U

CN201562745U - TD-SCDMA three-frequency combiner

Info

Publication number: CN201562745U
Application number: CN2009200484502U
Authority: CN
Inventors: 郑姗姗; 郑进喜; 廖忠权
Original assignee: NANJING GUANGSHUN NETWORK COMMUNICATION CO Ltd
Current assignee: NANJING GUANGSHUN NETWORK COMMUNICATION CO Ltd
Priority date: 2009-10-22
Filing date: 2009-10-22
Publication date: 2010-08-25
Anticipated expiration: 2019-10-22

Abstract

The utility model discloses a TD-SCDMA three-frequency combiner, which belongs to the technical field of electronic information and mobile communication. The TD-SCDMA three-frequency combiner adopts a resonant cavity mode, and designs cavity filters respectively adaptable to TD (A), TD (B) and TD (C) network signals onto the same cavity body by applying fundamental principles of the filters. Besides, the TD-SCDMA three-frequency combiner adopts the mode of a common cavity, optimizes layout of the whole cavity body, decreases installing and debugging time, further uses aluminum materials for die sinking and die-casting of the cavity body, only needs plating 3-mu silver on the inner surface of the cavity body, and greatly saves cost. Moreover, the TD-SCDMA three-frequency combiner has high technical index restraint outside bands, small insertion loss and small volume, facilitates installing and debugging, improves the performance of the whole system, effectively simplifies TD system coverage, enhances the reliability of a network, and is more suitable for engineering implementation application. In addition, the TD-SCDMA three-frequency combiner is a communication network device with small volume, light weight, low cost and strong practicability.

Description

A kind of TD-SCDMA tri-frequency combiner

Technical field

The utility model is the network optimization product that belongs in electronic information and the mobile communication technology field, specifically is a kind of TD (A)/TD (B)/TD (C) tri-frequency combiner.

Background technology

TD-SCDMA (Time Division-Synchronous Code Division Multiple synchronous CDMA (Code Division Multiple Access) of Access time-division), 3G (Third Generation) Moblie standard as China's proposition, from 1999 formally since ITU (International Telecommunication Association) submits to, gone through the time about ten years, finished expert group's assessment of standard, ITU approval and issue, fusion with 3GPP (third generation partnership projects) system, the a series of International standardization work such as introducing of new technology characteristic, propose by China thereby make the TD-SCDMA standard become first, based on Intellectual Property Right in China, the radio communication international standard of being accepted extensively in the world and approving.

Three frequency ranges that the TD-SCDMA of China Mobile obtains, TD (A) is that frequency range 1880-1900MHz, TD (B) are frequency range 2300MHz-2400MHz for frequency range 2010MHz-2025MHz, TD (C).At present, the TD network equipment can be supported two frequency ranges of A/B simultaneously.It is reported, also be bound to release the TD product of supporting three frequency ranges in 2009.

Aspect the network optimization, " soft optimization " strategy of TD network using " alien frequencies adds the station and mends blind " solves and covers blind spot and capacity overload, can not increase the adjacent area and disturb, and former network performance is not subjected to newly to add the base station to be influenced.Abundant Radio Resource also makes the networking of TD can adopt omnidirectional or various combination modes such as orientation, single carrier frequency or overloading frequency, same frequency or inter-frequency networking, to adapt to different environment and business demand.

And with frequently or inter-frequency networking when doing signal and covering, reduce the space in order to save cost, with frequently or the alien frequencies system transmissions tend to use mixer to make multiple signals merge into one road signal.Therefore in the TD-SCDMA co-space feedback system, tri-frequency combiner is indispensable device.Be to reduce the space, save cost, producer needs a kind of multiple signals to be merged into the mixer of one road signal, to realize the transmission of unlike signal system.

The utility model content

The utility model is exactly in order to solve the problem of three frequency range co-space feedback systems of TD-SCDMA, a kind of tri-frequency combiner of Design of Filter on same cavity with TD (A)/TD (B)/three frequency network signals of TD (C) is provided, and is the indispensable device of TD network signal system transmissions.

TD-SCDMA tri-frequency combiner described in the utility model, comprise the cover plate on cavity and the cavity, inside cavity is provided with three filters, be respectively TD (A) filter, TD (B) filter and TD (C) filter, four joint TD (A) port, TD (B) port, TD (C) port and public port are separately positioned on the cavity outside.Wherein TD (A) port, TD (B) port, TD (C) port are connected with TD (A) filter input end, TD (B) filter input end, TD (C) filter input end respectively.Common cavity links to each other with TD (A) filter output, TD (B) filter output and TD (C) filter output respectively, and public port is connected with common cavity again.

TD (A) filter comprises 5 resonant cavitys that link to each other successively, i.e. first to the 5th resonant cavity, a resonant rod has been installed in the center of each resonant cavity, first resonant rod is connected with TD (A) port by coupled-wires, last resonant rod links to each other by the space coupling and links to each other with common cavity, and between the 3rd resonant cavity and the 5th resonant cavity, perceptual cross-couplings device is installed.Coupled-wires is that silver-jacketed wire is fixed on resonant rod and the joint with scolding tin.Perception cross-couplings device is 2 installations tuning cross-lines on the cover board.

TD (B) filter comprises 4 resonant cavitys that link to each other successively, i.e. the 6th to the 9th resonant cavity, a resonant rod has been installed in the center of each resonant cavity, first resonant rod is connected with TD (B) port by coupled-wires, last resonant rod links to each other by the space coupling and links to each other with common cavity, and between the 7th resonant cavity and the 9th resonant cavity, capacitive cross-couplings device is installed.Coupled-wires is that silver-jacketed wire is fixed on resonant rod and the joint with scolding tin.Capacitive cross-couplings device be 2 be fixed on cavity recessed poor in the tuning bar that flies.

TD (C) filter comprises 6 resonant cavitys that link to each other successively, i.e. the tenth to the 15 resonant cavity, a resonant rod has been installed in the center of each resonant cavity, first resonant rod is by coupled-wires and TD (C) port, last resonant rod links to each other by the space coupling and links to each other with common cavity, and coupled-wires is that silver-jacketed wire is fixed on resonant rod and the joint with scolding tin.

A resonant rod has been installed in the common cavity center, and resonant rod is connected with public port by coupled-wires.

The utility model adopts the resonant cavity form, and utilization filter basic principle will be applicable to that respectively the cavity body filter design of TD (A)/TD (B)/TD (C) network signal is on same cavity.And adopt the form of common cavity, optimized the layout of whole cavity, reduced the time of assembling and debugging, and then can use aluminum die sinking die casting cavity, only need inner surface is plated 3 μ silver, provide cost savings greatly.Adopt above technology to make the technical indicator band suppress high outward, Insertion Loss is little, volume is little, be convenient to Installation and Debugging, improves the performance of whole system, strengthens the reliability of network, has simplified the TD system preferably and has covered, and be more suitable for the engineering construction application.It is little to make it become volume, in light weight, the communication network optimizing equipment that cost is low, practical.

According to optimizing Principles of Network, technical indicator of the present utility model is:

Description of drawings

Fig. 1 is the planar structure schematic diagram of the utility model cavity;

Fig. 2 is the structural representation of this practical cavity side, and a is a left view, and b is a right view.

Embodiment

The utility model adopts lumped parameter and distributed constant principle, according to technical indicator, in conjunction with Chebyshev's type Design of Bandpass principle.See Fig. 1-2.The utility model comprises cavity 1 (1), cover plate 2 (1), resonant rod 7 (16), tuning screw 16 (31), mounting cover plate bolt (63), resonant rod screw (16) is installed, joint (4), tuning bar 8 (1), the tuning cross-line 10 (1) of flying, inside cavity comprises that four filters are respectively TD (A) filter, TD (B) filter and TD (C) filter.

It is respectively TD (A) port 3, TD (B) port 4, TD (C) port 5 and public port 6 that whole mixer has four joints; TD (A) port 3 is connected in public port 6 through common cavity 40 by coupled-wires 9 again through first resonant cavity, 11 to the 5th resonant cavitys 15; TD (B) port 4 connects and access public port 6 by coupled-wires 9 through common cavity 40 through the 6th resonant cavity 21 to the 9th resonant cavitys 24 again; TD (C) port 5 is connected in public port 6 through common cavity 40 by coupled-wires 9 again through ten resonant cavitys the 31 to the 15 resonant cavity 36.In network optimization compartment system, use this mixer, can make TD (A), TD (B), TD (C) system share the same antenna, the signal that comes out respectively from the TD base station enters TD (A) port 3, TD (B) port 4, TD (C) port 5 of mixer separately, filter by separately closes the road to common cavity 40 again, connects public port 6 at last.

Inside cavity is provided with three filters, is respectively TD (A) filter, TD (B) filter and TD (C) filter.

TD (A) filter comprises 5 resonant cavitys that link to each other successively, i.e. first to the 5th resonant cavity, a resonant rod 7 has been installed in the center of each resonant cavity, first resonant rod is connected with TD (A) port 3 by coupled-wires 9, last resonant rod links to each other by the space coupling and links to each other with common cavity 40, and between the 3rd resonant cavity 13 and the 5th resonant cavity 15, perceptual cross-couplings device 16 is installed.Coupled-wires is that silver-jacketed wire is fixed on resonant rod and the joint with scolding tin.Perception cross-couplings device is 2 installations tuning cross-lines on the cover board.

TD (B) filter comprises 4 resonant cavitys that link to each other successively, i.e. the 6th to the 9th resonant cavity, a resonant rod 7 has been installed in the center of each resonant cavity, first resonant rod is connected with TD (B) port 4 by coupled-wires 9, last resonant rod links to each other by the space coupling and links to each other with common cavity 40, and between the 7th resonant cavity 22 and the 9th resonant cavity 24, capacitive cross-couplings device 8 is installed.Coupled-wires is that silver-jacketed wire is fixed on resonant rod and the joint with scolding tin.Capacitive cross-couplings device be 2 be fixed on cavity recessed poor in the tuning bar that flies.

TD (C) filter comprises 6 resonant cavitys that link to each other successively, i.e. the tenth to the 15 resonant cavity, a resonant rod 7 has been installed in the center of each resonant cavity, first resonant rod is by coupled-wires and TD (C) port 5, last resonant rod links to each other by the space coupling and links to each other with common cavity 40, and coupled-wires is that silver-jacketed wire is fixed on resonant rod and the joint with scolding tin.

Claims

1. TD-SCDMA tri-frequency combiner, it is characterized in that: comprise the cover plate (2) on cavity (1) and the cavity (1), cavity (1) inside is provided with three filters, is respectively TD (A) filter, TD (B) filter and TD (C) filter; Cavity (1) outside is provided with four joints, be respectively TD (A) port (3), TD (B) port (4), TD (C) port (5) and public port (6), wherein TD (A) port (3), TD (B) port (4) and TD (C) port (5) are connected with TD (A) filter input end, TD (B) filter input end and TD (C) filter input end respectively, and common cavity (40) is of coupled connections with TD (A) filter output, TD (B) filter output and TD (C) filter output space; Public port (6) is connected with common cavity (40) again.

2. TD-SCDMA tri-frequency combiner according to claim 1, it is characterized in that: TD (A) filter comprises 5 resonant cavitys that link to each other successively, i.e. first to the 5th resonant cavity, a resonant rod (7) has been installed in the center of each resonant cavity, first resonant rod is connected with TD (A) port (3) by coupled-wires (9), last resonant rod links to each other by the space coupling and links to each other with common cavity (40), and between the 3rd resonant cavity (13) and the 5th resonant cavity (15), perceptual cross-couplings device (16) is installed.

3. TD-SCDMA tri-frequency combiner according to claim 2 is characterized in that: perceptual cross-couplings device (16) is mounted in the tuning cross-line on the cover plate (2).

4. TD-SCDMA tri-frequency combiner according to claim 1, it is characterized in that: TD (B) filter comprises 4 resonant cavitys that link to each other successively, i.e. the 6th to the 9th resonant cavity, a resonant rod (7) has been installed in the center of each resonant cavity, first resonant rod is connected with TD (B) port (4) by coupled-wires (9), last resonant rod links to each other by the space coupling and links to each other with common cavity (40), and between the 7th resonant cavity (22) and the 9th resonant cavity (24), capacitive cross-couplings device (8) is installed.

5. TD-SCDMA tri-frequency combiner according to claim 4 is characterized in that: capacitive cross-couplings device (8) be fixed on cavity recessed poor in the tuning bar that flies.

6. TD-SCDMA tri-frequency combiner according to claim 1, it is characterized in that: TD (C) filter comprises 6 resonant cavitys that link to each other successively, i.e. the tenth to the 15 resonant cavity, a resonant rod (7) has been installed in the center of each resonant cavity, first resonant rod is by coupled-wires and TD (C) port (5), last resonant rod links to each other by the space coupling and links to each other with common cavity (40), and coupled-wires is that silver-jacketed wire is fixed on resonant rod and the joint with scolding tin.