Microwave tuner with high reflection coefficient

Abstract

Provided is a microwave tuner with a high reflection coefficient. The microwave tuner with the high reflection coefficient is formed by microwave connectors (C1, C2), a microwave groove transmission line (SL), a central conductor (CC), a harmonic wave total reflection apparatus (R), and a housing (B). The harmonic wave total reflection apparatus (R) is formed by a metallic short circuit line (L), a metallic spring (T), a dielectric (D), and a fixed chamber (P). The microwave connectors (C1, C2) are connected with both ends of the microwave groove transmission line (SL) through the central conductor (CC). The metallic short circuit line (L) is electrically connected with the metallic spring (T). The effective length of the added lengthways lengths of the metallic short circuit line (L) and the metallic spring (T) is a quarter of a higher harmonic wavelength. The metallic spring (T) is in contact with the central conductor (CC) such that the harmonic wave total reflection apparatus (R) may move horizontally along the central conductor (CC).

Description

Technical field [0001] The present invention relates to a microwave harmonic adjuster with high reflection coefficient, in particular to a microwave harmonic adjuster with low loss of fundamental wave and high reflection of high order harmonic, which can handle high power and can be applied in broadband for improving microwave Microwave harmonic adjuster for linearity and characteristic parameters of devices and systems. Background technique [0002] In the development of microwave devices and systems, in addition to studying the fundamental wave (frequency f 0 ) characteristics, but also to study the higher harmonics (frequency nf 0 , where n≥2) influences the fundamental wave, the traditional method is to use a low-pass filter to filter out all the high-order harmonics, wasting these high-order harmonics in vain. Studies have shown (see the book "Fundamentals of RF and Microwave Transistor Amplifiers" by American author InderJ.Bahl, p. 217-222), the high-order harmonics ...

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Problems solved by technology

For this reason, MAURY MICROWAVE CORPORATION in the United States uses a multiplexer (Multiplexer) plus multiple basic adjusters (including f 0 , 2f 0 , 3f 0 Frequency, etc.) to achieve the above functions, but due to the limitation of the bandwidth of the multiplexer and the existence of losses, the reflection coefficient of the high-order harmonics is not high, which also limits the bandwidth of the system, and at the same time it is easy to generate parasitic oscillations. The linear and characteristic parameters did not achieve the best results

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