A Very Low Frequency High Power Transmitting System

A transmission system, high-power technology, applied in the field of low-frequency signals, can solve the problems of unsatisfactory detection effect, weak anti-interference ability, shallow detection depth, etc., to achieve suitable large-area network reception, small measurement error, strong anti-interference ability Effect

Active Publication Date: 2022-02-18
武汉船舶通信研究所
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Problems solved by technology

At present, through the electromagnetic detection method of the extremely low frequency signal transmission system, the anti-interference ability is weak, the measurement error is large, the detection distance is short, and the detection depth is shallow, so the detection effect is not ideal in practical applications.

Method used

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  • A Very Low Frequency High Power Transmitting System
  • A Very Low Frequency High Power Transmitting System
  • A Very Low Frequency High Power Transmitting System

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0042] In the following introduction, the terms "first" and "second" are only used for the purpose of description, and should not be understood as indicating or implying relative importance. The following description provides multiple embodiments of the present invention, and different embodiments can be replaced or combined in combination, so the present invention can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment contains features A, B, C, and another embodiment contains features B, D, then the invention should also be considered to include all other possible combinations containing one or more of A, B, C, D Although this embodiment may not be clearly written in the following content.

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Abstract

The invention discloses an extremely low-frequency high-power transmitting system. The system includes a high-precision exciter, a signal processing unit, a transmitting host, a transfer switch, a tuning device, and a dummy load; the tuning device is connected to a transmitting antenna; the transmitting host includes a dual-band The two power amplifier units cascaded by the double power bridge are used to combine the high-power signal of the ultra-low frequency and ultra-low frequency dual frequency bands on the power amplifier circuit of the same transmitting host. The present invention realizes the high-power ultra-low frequency transmitting host through the design of ultra-low frequency dual-band dual-power bridge cascaded power synthesis, and realizes ultra-low frequency and ultra-low frequency (0.1Hz-300Hz) dual-band 500kW high power on the same main power circuit Efficient synthesis of signals. In addition, a combined tuning method of direct coupling, capacitance tuning and matching tuning is designed to match and tune with the horizontal low-mounted transmitting antenna with a length of hundreds of kilometers, so as to realize the impedance of the horizontal low-mounted transmitting antenna at all frequency points within a wide frequency range of 0.1Hz to 300Hz Efficient radiation of matched tuned and high power extremely / ultra low frequency signals.

Description

technical field [0001] The present application relates to the field of low-frequency signal technology, in particular, to an extremely low-frequency high-power transmission system. Background technique [0002] The low-frequency signal propagates around the world in the form of a waveguide between the earth and the ionosphere. According to the regulations of the ITU, the frequency band of the extremely low-frequency signal is 3Hz to 30Hz. The extremely low-frequency signal can penetrate deep seawater and formations, and the propagation loss of the extremely low-frequency electromagnetic wave is small. The attenuation in the atmosphere is less than 1dB / 1000km. Extremely low frequency electromagnetic wave is a kind of low frequency electromagnetic wave (0.1Hz~300Hz) which is artificially generated with a radiation range of thousands of kilometers and a high signal-to-noise ratio. At present, through the electromagnetic detection method of the extremely low frequency signal tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/04H04B1/036H02M1/12H02J9/06H04B7/06
CPCH04B1/0483H04B1/0458H04B1/036H02J9/06H02M1/12H04B7/0602Y02D30/70
Inventor 刘勇刘庆饶斯韬李纵王亚维
Owner 武汉船舶通信研究所
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