Ultra-wideband coupler structure considering high-frequency and low-frequency performances
A coupler and ultra-broadband technology, applied in waveguide-type devices, electrical components, connecting devices, etc., can solve the problems of excessive structural size and inability to achieve, and achieve the effect of improving the high and low frequency directional indicators and broadening the operating frequency range.
Pending Publication Date: 2020-07-10
TRANSCOM INSTR
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Problems solved by technology
But for the frequency band below 300kHz and the frequency band above 6GHz, for example, the directivity index of the 100kHz-300kHz frequency band and the directivity index of 6GHz-9GHz will be very poor, and the coupler with this structure cannot work at 100kHz-300kHz and 6GHz-9GHz , if more manganese-zinc magnetic rings and nickel-zinc magnetic rings are strung on the coupler to improve the high and low frequency indicators, figure 1 The structure of the coupler shown is limited by the size limit, which will cause the structure size to be too large to meet the specification requirements
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[0021] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.
[0022] The ultra-broadband coupler structure of the present invention, which takes into account both high and low frequency performance, includes a first layer of magnetic ring, a second layer of magnetic ring and a radio frequency coaxial line, the first layer of magnetic ring surrounds the radio frequency coaxial line, The second layer of magnetic ring is set outside the first layer of magnetic ring, the outer diameter of the first layer of magnetic ring is smaller than the inner diameter of the second layer of magnetic ring; the first layer of magnetic ring is a nickel-zinc magnetic ring , the second magnetic ring is manganese zinc magnetic ring.
[0023] As a preferred embodiment of the present invention, the number of nickel-zinc magnetic rings in the first layer of magnetic rings is greater than or eq...
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The invention relates to an ultra-wideband coupler structure considering high-frequency and low-frequency performances. The coupler structure comprises a first-layer magnetic ring, a second-layer magnetic ring and a radio frequency coaxial line. The first-layer magnetic ring surrounds the radio frequency coaxial line, the second-layer magnetic ring sleeves the outside of the first-layer magnetic ring, and the outer diameter of the first-layer magnetic ring is smaller than the inner diameter of the second-layer magnetic ring. The first-layer magnetic ring is a nickel-zinc magnetic ring, and thesecond-layer magnetic ring is a manganese-zinc magnetic ring. By the adoption of the ultra-wideband coupler structure considering the high-frequency and low-frequency performances, good directivity indexes are achieved in a wider frequency range, and the indexes are remarkably improved in an ultra-low frequency and in an ultra-high frequency band. The coupler has the advantages that under the condition of same size and on the basis of the double-layer magnetic ring structure, on the premise that the boundary structure size of an existing coupler is not changed, the high-frequency and low-frequency directivity indexes of the coupler can be remarkably improved at the same time, and the working frequency range of the coupler is widened.
Description
technical field [0001] The invention relates to the technical field of communication testing instruments and meters, in particular to the field of vector network analyzers, and specifically refers to an ultra-wideband coupler structure with both high and low frequency performance. Background technique [0002] Directional couplers are widely used in the RF front-end of communication test instruments, such as antenna feeder analyzers, vector network analyzers, etc. Among them, for the vector network analyzer, whether it is a foreign product or a domestic product, we can see the coupler in its RF front end. The coupler is a very important radio frequency component. Its operating frequency and performance will directly affect the performance and market competitiveness of the entire radio frequency instrumentation. [0003] As a general-purpose test instrument, the vector network analyzer has a wide range of applications and is suitable for index testing of various passive devi...
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Login to View More IPC IPC(8): H01P5/00
CPCH01P5/00
Inventor 陈铭周文博陈勇姚武伟
Owner TRANSCOM INSTR