High-efficiency wideband power amplifier with band-pass filter response function
A technology of band-pass filter and power amplifier, which is applied in the direction of power amplifier, improved amplifier to expand bandwidth, impedance network, etc. It can solve the problems of poor performance of microstrip bandpass filter, loss of connecting microstrip line, and large circuit volume and other issues, to achieve good matching, to achieve broadband characteristics, the effect of small circuit size
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[0026] The implementation of the present invention will be further described below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention is not limited to the following examples.
[0027] The high-efficiency broadband power amplifier with band-pass filter response proposed in the present invention mainly lies in its output matching circuit, that is, the microstrip band-pass filter provided by the present invention.
[0028] The microstrip line bandpass filter is composed of two half-wavelength resonators, and its structural schematic diagram is as follows figure 1As shown, they are called the input resonator 101 and the output resonator 102, or the input resonator 101 and the output resonator 102. The two half-wavelength resonators are both open-loop structures and are vertically symmetrical to each other. The input The resonator 101 is composed of the first microstrip line 1, the second microstrip line 2, the third micro...
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