Multi-frequency common-tower deployment network optimization device

Abstract

The utility model relates to the technical field of medium wave emission, and discloses a multi-frequency common-tower deploying network optimization device, which comprises a module I, a module II, a module III, a module IV, a module V, a module VI and a lightning protection box. In addition, simulation calculation can be carried out through an Excel table according to the high-frequency circuit theory, the using effect is good, and the design goal is easy to achieve.

Description

Technical Field

[0001] The utility model relates to the technical field of medium-wave transmission, in particular to an optimization device for a multi-frequency co-tower matching network. Background Technique

[0002] The output of medium-wave transmission is mostly high-power output. Affected by the land occupation cost, most transmitting antennas share two frequencies. A duplex network needs to be built to combine the powers of two frequency points and share one antenna for transmission, so that the output impedance of each transmitter matches the impedance of the transmitting antenna, realizing the maximum power transmission of the transmission output. At the same time, the transmitters of the two frequency points do not affect each other. The design of the output network for sharing the transmitting antenna is highly professional and often needs to be customized. The existing output network has various forms, and the daily maintenance is difficult, so an optimization scheme is urgently needed.

[0003] The existing output network has various forms and is mainly composed of circuit blocks for lightning protection, matching, blocking, and absorption functions. This makes the circuit devices share and restrict each other, resulting in extremely complex debugging of the antenna tuning network, poor consistency, and great difficulty in daily maintenance.

[0004] Therefore, we propose an optimization device for a multi-frequency co-tower matching network to solve the above-mentioned problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an optimization device for a multi-frequency co-tower matching network to solve the problems in the above background technique that the circuit devices share and restrict each other, resulting in extremely complex debugging of the antenna tuning network, poor consistency, and great difficulty in daily maintenance.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An optimization device for a multi-frequency co-tower matching network includes Module 1, Module 2, Module 3, Module 4, Module 5, Module 6, and a lightning protection box, and Module 1, Module 2, Module 3, Module 4, Module 5, Module 6, and the lightning protection box are electrically connected to form an output network through the above components;

[0007] Module 1 includes L1, C1, and C2, and L1 and C1 are in series resonance at frequency A; L1, C1, and C2 are in parallel resonance at frequency B;

[0008] Module 2 includes L4, C4, and L5, and L4 and C4 are in series resonance at frequency B; L4, C4, and L5 are in parallel resonance at frequency A;

[0009] Module 3 includes L6, C6, and L7, and L6 and C6 are in series resonance at frequency B; L6, C6, and L7 are in parallel resonance at frequency A;

[0010] Module 4 includes L8, C8 and C9, and L8 and C8 are in series resonance at frequency A; L8, C8 and C9 are in parallel resonance at frequency B;

[0011] Module 5 includes L2, L3 and C3, and L2, L3 and C3 form a T-type matching network at frequency A;

[0012] Module 6 includes L9, L10 and C7, and L9, L10 and C7 form a T-type matching network at frequency B.

[0013] Preferably, L1 to L10 are inductors; C1 to C9 are capacitors.

[0014] Preferably, the input impedance of the network design is 50 ohms.

[0015] Preferably, the lightning protection box is an integrated independent structure.

[0016] Preferably, the output network is composed of functional modular combinations. Each functional module can be adjusted independently without mutual influence. The network calculation is carried out by simulation calculation in an Excel table according to the high-frequency circuit theory. The impedance of the transmitting antenna matches the output impedance of the transmitter, and the standing wave with a frequency deviation of plus or minus 10 kHz is not higher than 1.5.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. The modular design of the output network is convenient for promoting design applications.

[0019] 2. Greatly reduce the difficulty of equipment maintenance and reduce the workload of maintenance personnel.

[0020] 3. Precise simulation calculation design with excellent technical indicators.

[0021] 4. The medium-wave transmitting output modular duplex network design in the present invention not only has good use effects but also can achieve the design goals. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the electrical connection of each component of the present utility model;

[0023] Figure 2 It is a functional schematic diagram of Module 1, Module 2, Module 3, Module 4, Module 5 and Module 6 of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1: Please refer to Figure 1 - Figure 2 ,

[0026] In this embodiment, the functions of various components are as follows:

[0027] L1 and C1 in Module 1 are mainly used for series resonance at Frequency A; while L1, C1, and C2 are used for parallel resonance at Frequency B.

[0028] In Module 2: L4 and C4 are mainly used for series resonance at Frequency B; while L4, C4, and L5 are used for parallel resonance at Frequency A.

[0029] In Module 3: L6 and C6 are mainly used for series resonance at Frequency B; while L6, C6, and L7 are used for parallel resonance at Frequency A.

[0030] In Module 4: L8 and C8 are mainly used for series resonance at Frequency A; while L8, C8, and C9 are used for parallel resonance at Frequency B.

[0031] L2, L3, and C3 in Module 5 are a T-type matching network for Frequency A.

[0032] L9, L10, and C7 in Module 6 are a T-type matching network for Frequency B.

[0033] L1 to L10 are inductors; while C1 to C9 are capacitors.

[0034] The input impedance of the network design is 50 ohms.

[0035] The lightning protection box 7 adopts an integrated independent structure design.

[0036] The adjustment method of the multi-frequency co-tower matching network optimization device is as follows:

[0037] Step 1: Adjust Module 1, Module 2, and Module 5 to achieve an antenna matching at Frequency A, and block and absorb Frequency B.

[0038] Step 2: Adjust Module 3, Module 4, and Module 6 to achieve an antenna matching at Frequency B, and block and absorb Frequency A.

[0039] Step 3: The lightning protection box 7 is installed between the network and the antenna to block and absorb the lightning striking the ground.

[0040] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0041] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Multi-frequency co-tower deployment network optimization device, characterized by: The device comprises module one (1), module two (2), module three (3), module four (4), module five (5), module six (6) and a lightning protection box (7), wherein module one (1), module two (2), module three (3), module four (4), module five (5), module six (6) and the lightning protection box (7) are electrically connected to form an output network through the above components; The module 1 (1) includes L1, C1 and C2, and L1 and C1 are connected in series to resonate at frequency A; L1, C1 and C2 are connected in parallel to resonate at frequency B; The module 2 (2) includes L4, C4 and L5, and L4 and C4 are connected in series to resonate at the B frequency; L4, C4 and L5 are connected in parallel to resonate at the A frequency; The module three (3) includes L6, C6 and L7, and L6 and C6 are connected in series to resonate at the B frequency; L6, C6 and L7 are connected in parallel to resonate at the A frequency; The module four (4) includes L8, C8 and C9, and L8 and C8 are connected in series to resonate at frequency A; L8, C8 and C9 are connected in parallel to resonate at frequency B; The module five (5) includes L2, L3 and C3, and L2, L3 and C3 are T-type matching networks of frequency A; The module six (6) includes L9, L10 and C7, and L9, L10 and C7 are a T-type matching network of the B frequency.

2. The multi-frequency co-tower deployment network optimization device according to claim 1 is characterized in that: L1 to L10 are inductors; C1 to C9 are capacitors.

3. The multi-frequency shared tower deployment network optimization device according to claim 2, characterized in that: The network is designed to have an input impedance of 50 ohms.

4. The multi-frequency co-tower deployment network optimization device according to claim 3 is characterized by: The lightning protection box (7) is an integrated independent structure.

5. The multi-frequency co-tower deployment network optimization device according to claim 4 is characterized in that: The output network is composed of functional modular combinations, and each functional module is adjusted independently without affecting each other. The network calculation is simulated in an Excel spreadsheet based on high-frequency circuit theory. The transmitting antenna impedance matches the transmitter output impedance, and the standing wave with a frequency deviation of plus or minus 10kHz is no higher than 1.5.

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