Efficient power amplifier based on compact microstrip resonant cell
A technology of microstrip resonant unit and power amplifier, which is applied to amplifiers, amplifiers, instruments, etc. with semiconductor devices/discharge tubes, which can solve problems such as unfavorable applications, complex fundamental wave matching, and enlarged circuit size, and achieve small size , The circuit structure is simple and the effect is easy to realize
Inactive Publication Date: 2018-11-02
天津大学(青岛)海洋工程研究院有限公司
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Problems solved by technology
However, this traditional harmonic control circuit has two disadvantages: first, the microstrip stubs connected in parallel are in the form of reactance at the fundamental frequency, which makes the fundamental matching more complicated
Second, these harmonic control circuits will increase the size of the circuit, which is not conducive to its application
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[0030] In order to illustrate the technical solution of the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.
[0031] In the actual design, the transistor is a 10 W GaN HEMT transistor whose model is Cree CGH40010F. Specific values for the parasitic components provided by the manufacturer for this transistor are as follows: Parasitic capacitance between transistor drain and source C ds = 1.2 pF, parasitic inductance L d = 0.55 nH, package parasitic capacitance C p = 0.2 pF. In addition, all bypass capacitors are 10pF capacitors of Murata's GQM18 series in actual implementation.
[0032] According to the above technical solution, the specific implementation circuit is realized by using a microstrip line. In a specific implementation, the high-efficiency h...
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The invention relates to an efficient power amplifier based on a compact microstrip resonant cell. An output terminal of a transistor comprises a transistor biasing circuit of a transmission line withthe electrical length described in the specification, the compact microstrip resonant cell, a tuning transmission line and a fundamental wave matching circuit. The power amplifier can design first three sub-harmonics of any efficient harmonic tuning type switching power amplifier and has the characteristics of simple circuit structure and small size while corresponding impedance conditions are met and the required efficient power amplifier is constructed. Meanwhile, the method is also convenient for realization of a circuit layout and application of the efficient power amplifier in a wider range.
Description
technical field [0001] The invention relates to the technical field of wireless communication power amplifiers, in particular to the design of a high-efficiency power amplifier based on a compact microstrip resonance unit. Background technique [0002] At present, with the rapid development of wireless communication technology, the performance requirements of the overall transceiver have attracted more and more attention. In the entire transceiver system, the power amplifier is a very important energy-consuming component. Just imagine that if the power amplifier works with low efficiency, it will cause a lot of energy loss and increase the operating cost. So how to design high-efficiency power amplifiers has become a hot research field. [0003] At present, high-efficiency power amplifiers mainly include two types: harmonic tuning power amplifiers and switching power amplifiers. The most typical type of harmonic tuning power amplifier is class F power amplifier (power amp...
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IPC IPC(8): H03F3/191H03F3/213G06F17/50
CPCG06F30/36H03F3/191H03F3/213
Inventor 马建国刘畅成千福傅海鹏赵升
Owner 天津大学(青岛)海洋工程研究院有限公司