High-power amplification device and method
An amplifying device and power amplifying technology, which are applied to power amplifiers, components of amplifying devices, and layout of amplifier protection circuits, etc., can solve problems such as limited conversion efficiency, and achieve low power consumption, high amplification efficiency, and uniform temperature rise control. Effect
Pending Publication Date: 2017-07-04
SHENZHEN GRENTECH CORP LTD
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Problems solved by technology
At present, the fallback power amplifier in the general transmitter uses a large power consumption to meet the linearity requirements, and the conversion efficiency from DC (direct current) to RF (radio frequency) is limited, which obviously cannot meet the requirements of the current broadcast transmitter power amplifier. Efficiency amplifiers are particularly important. It not only improves equipment reliability due to reduced power consumption, reduces equipment cooling requirements, but also reduces equipment operating costs.
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Embodiment Construction
[0048] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0049] refer to figure 1 and figure 2, a kind of high-power amplifying device provided by the present invention is an all-solid-state amplifier, mainly used in DTMB (Digital Television Terrestrial Broadcasting) system, for amplifying signals of terrestrial digital television broadcasting transmitters, and the working frequency range is 470~ 800MHz. The device includes a housing 100 , an excitation amplifying unit 10 installed in the housing 100 , a power amplifying unit 40 , an output sampling unit 60 , a detection control unit 80 , and a heat pipe radiator and a fan 90 installed in the housing 100 . The excitation amplifying unit 10 is used to receive the terrestrial TV radio frequency signal output by the DTMB exciter and amplify it to a medium power state. The power amplifying unit 40 is connected with the excitation amplifying unit 10 and is use...
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The present invention relates to a high-power amplification device and method. The device comprises: an excitation amplification unit configured to receive ground television radio-frequency signals output by a DTMB exciter and amplify the ground television radio-frequency signals to a middle power state; a power amplification unit connected with the excitation amplification unit and configured to receive radio-frequency signals of the middle power state outputted by the excitation amplification unit and perform power amplification according to the power requirement; an output sampling unit connected with power amplification unit and configured to receive power amplification radio-frequency signals output by the power amplification unit and perform sampling and output; and a detection control unit connected with the excitation amplification unit and the output sampling unit and configured to detect and control the power, the temperature and the current of the whole device. The amplification efficiency is high, power consumption is small, and the amplitude frequency and phase-frequency characteristics are good.
Description
[0001] 【Technical field】 [0002] The invention relates to the technical field of power amplification, in particular to a high-power amplifying device and an amplifying method thereof in a DTMB (Digital Television Terrestrial Multimedia Broadcasting, digital television terrestrial broadcasting) system. [0003] 【Background technique】 [0004] With the rapid development of radio and television and mobile communications, the realization of new technologies has promoted the introduction of various applications, and the requirements for service providers are getting higher and higher. In order to better meet the needs of users, radio and television companies around the world have increased Network construction. Under high energy consumption and cost pressure, operators pay more attention to operating costs and efficiency, and put forward more requirements for network equipment, such as equipment efficiency, remote monitoring, and self-healing functions. [0005] The power amplifie...
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IPC IPC(8): H04N5/38H03F1/02H03F1/52H03F3/19H03F3/21H03F3/24H03G3/30
CPCH03F1/0288H03F1/52H03F3/19H03F3/211H03F3/24H03G3/3042H04N5/38H03F2200/451
Inventor 李勇军
Owner SHENZHEN GRENTECH CORP LTD