Frequency Selective Microstrip Splitter
A frequency selection and splitter technology, applied in circuits, waveguide devices, advanced technologies, etc., can solve the problems of increasing circuit design complexity, increasing power consumption and cost, and large energy loss, reducing complexity and It is difficult to debug, easy to debug, and the effect of small signal energy loss
Active Publication Date: 2022-05-17
10TH RES INST OF CETC
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Problems solved by technology
But this design has the following problems: (1) Since the power distribution circuit distributes a certain output power to each branch circuit in a certain proportion, the energy loss is large
Such a design method not only increases the complexity of circuit design, reduces reliability, but also increases power consumption and cost, and requires corresponding debugging time, which causes a lot of inconvenience to relevant practitioners
Method used
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[0017] refer to figure 1 . In the preferred embodiment described below, a frequency selective microstrip splitter includes: a main channel microstrip line 5 etched on a microstrip printed board, passing through the main channel input port 1 to the main channel output port 2 , are respectively vertically connected to the first branch microstrip line 6 reaching the first branch output port 4 on the main road microstrip line 5, located below the first branch microstrip line 6 and reversely and vertically connected to the main road microstrip line 5 The second branch microstrip line 7 reaching the second branch output port 3 . Among them: under the first branch microstrip line 6 and the second branch microstrip line 7, respectively connected to the main road microstrip line 5 mirror symmetrical parallel, one end suspended, the length is 0.25 lambda 1 The first impedance transformation line 8 and the second impedance transformation line 9 constitute the equivalent circuit of th...
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A frequency selective microstrip splitter disclosed by the invention has high isolation, low signal energy loss and is easy to debug. The present invention is realized through the following technical scheme: under the first branch microstrip line and the second branch microstrip line, respectively connect one end suspended in the air, the length is 0.25λ 1 The first impedance transformation line and the second impedance transformation line constitute the equivalent circuit of the frequency selective microstrip splitter; the corresponding medium wavelength λ is λ n The N-way radio frequency transmission frequency signal f n After the modulated control signal and DC current signal enter the main road microstrip line from the input port, they arrive at the main road output port, the first branch output port and the second branch output port in sequence, and the set radio frequency signal passes through the The main output port of the equivalent circuit is output to the terminal load device R1, the modulated control signal is output to the terminal load R2 through the first branch output port, and the DC current signal is output to the terminal load device R3 through the second branch input port.
Description
technical field [0001] The invention relates to the technical field of microwave circuits, in particular to a frequency-selective microstrip splitter used in broadband co-cable transmission technology for internal equipment of satellite communication systems or satellite navigation systems. Background technique [0002] The satellite communication system and the satellite navigation system are mainly composed of two parts: an active antenna and a transceiver terminal. The two parts are connected by using various types of radio frequency, digital, power supply cables, etc., but limited by the space and size of the platform, there are transmission The distance is short, the amount of wiring is large, the construction is complicated, and the maintenance is inconvenient. In the comparison of various transmission technology methods, broadband co-cable transmission technology can not only solve the above problems, but also ensure the quality of signal transmission, reduce engineer...
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IPC IPC(8): H01P1/213
CPCH01P1/213Y02D30/70
Inventor 胡大成何斌熊文毅何凌云杜明胡云何宣霖
Owner 10TH RES INST OF CETC