Multipath microstrip distribution, multipath microstrip synthesized power amplifier components
A distribution circuit and microstrip technology, applied in electrical components, components of color TVs, components of TV systems, etc., can solve the problem that it is difficult to meet the output power requirements of power amplifier components, and it is difficult to reasonably design the number and power of power amplifier components. If the problem is too large, it can achieve the effect of good economy, improving shoulder index and increasing output power.
Inactive Publication Date: 2007-02-28
毛金才
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Problems solved by technology
Example: When the output of power amplifier components is required to be 1000W, 4 power amplifier devices can only synthesize and output 450W, 8 power amplifier devices can only output 800W, which is less than 1000W, and 16 power amplifier devices can output 1600W. unreasonable
The output power of the above power amplifier components is subject to 2 n Due to the limitation of power synthesis technology, it is difficult to meet the output power requirements of power amplifier components, and it is difficult to reasonably design the number of power amplifier components
Method used
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[0024] Embodiment: the multi-channel microstrip distribution of the present invention, the multi-channel microstrip synthesizing power amplifier component is the power P of the final stage of input power amplifier component i Through the N-way microstrip distribution circuit, it is evenly distributed to N power amplifier devices BLF861A for amplification, and the amplified power of N power amplifier devices BLF861A is then synthesized by N-way microstrip synthesis circuits to achieve the output power P required by the power amplifier components. O , where N is a natural number. The λ / 4 wavelength impedance converter is used in the N-way microstrip synthesis and distribution circuit, λ ε For the medium wavelength K = λ O K, K is the medium shortening factor, λ O = air wavelength = c / f = 3 x 10 8 / f(10 6 Hz).
[0025] Referring to Figure 4, the input power of the final stage power amplifier is distributed to three groups of basic power amplifier module units composed of 2 B...
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The invention relates to a multi-path micro-band distributing amplifying element. Wherein, it distributes the power Pi at the end of input amplifier via N-path micro-band distributing circuit into N amplifiers BLF861A uniformly to be amplified; and the powers via N-path micro-band combining circuit are combined as the output power Po, while N is natural number; the N-path micro-band combination and distributing circuit uses lambada / 4 resistance changer. The invention can output 1000W via three paths of micro-bands and three paths of micro-bands, to improve the output power and improve the power efficiency.
Description
technical field [0001] The invention relates to a multi-channel microstrip distribution and multi-channel microstrip synthesizing amplifier assembly, which is mainly used in the field of FM / VHF / UHF (1KW~30KW) all-solid-state digital, analog broadcasting, TV transmitter research and development, production and manufacturing, especially The application of the all-solid-state on the digital TV transmitter effectively improves the shoulder index. Background technique [0002] At present, radio and television transmitters produced by domestic and foreign manufacturers all use solid-state devices. 1KW ~ 30KW all-solid-state radio and television transmitter power amplifier is composed of several groups of power amplifier components, and the final stage of each group of power amplifier components is composed of 4 to 16 power amplifier solid-state devices. Therefore, the output power of each group of power amplifier components can be divided into: 4 power amplifier components synthe...
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IPC IPC(8): H04N5/38
Inventor 毛金才毛诺文
Owner 毛金才