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A dual-frequency phase shifter with separately controllable phase shift amount
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A phase-shifting and frequency-shifting technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of separately controllable phase-shifting, and achieve the effects of low processing cost, easy integration and low loss.
Active Publication Date: 2020-06-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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At present, there is no dual-frequency phase shifter that can control the phase shift amount separately. The present invention aims to propose a method to control the phase shift amount at two frequency points through one voltage
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example 1
[0041] f 1 = 0.95GHz, f 2 = 1.615GHz at f 1 superior, in f 2 superior 0°, 30°, 60°, 90°, 150°, 180° respectively.
[0042] For different phase shift amounts, some circuit parameter values of the dual-frequency phase shifter remain unchanged, as shown in Table 1.
[0043] Table 1 Common parameter values of dual-frequency phase shifter
[0044] Z α
θ α
Z β
θ β
Z s
θ s
48.61Ω 133.33° 68.74Ω 133.33° 13.03Ω 66.66°
[0045] Table 2 shows the circuit parameter values of the dual-frequency susceptance unit of the dual-frequency phase shifter at different phase shifting amounts.
[0046] Table 2 Circuit parameter values of dual-frequency susceptance unit
[0047]
[0048] The phase shift curve simulation comparison of each dual-frequency phase shifter is shown in figure 2 shown.
example 2
[0050] f 1 = 0.95GHz, f 2 = 1.615GHz at f 1 superior, 0°, 30°, 60°, 90°, 150°, 180° respectively, at f 2 superior
[0051] The common circuit parameters of various dual-frequency phase shifters with different phase shift amounts are also shown in Table 1. The values of the circuit parameters of the dual-frequency susceptance unit of the dual-frequency phase shifter at different phase shift amounts are shown in Table 1. 3.
[0052] Table 3 Circuit parameter values of dual-frequency susceptance unit
[0053]
[0054] Among them, when When , the dual-frequency susceptance unit needs to be realized with an open-circuit second-order ladder impedance stub, and its structure is as follows image 3 shown. where Z 1 =39.89Ω, Z 2 =99.72Ω, θ=57.69°.
[0055] The phase shift curve simulationcomparison diagram of each dual-frequency phase shifter in design example 2 is as follows Figure 4 shown.
[0056] All of the above phase shifter circuits with different phase s...
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Abstract
The invention discloses a dual-frequency phase shifter with respectively controllable phase shift amounts, relates to a dual-frequency phase shifter, and belongs to the technical field of basic electrical elements. The dual-frequency phase shifter consists of a square transmission line segment combination, a loading stub connected to an input end, a loading stub connected to an output end, two same dual-frequency susceptance units for controlling phase shift quantity and two switches for switching phases. The loading stubs at the input end / output end and the dual-frequency susceptance units are achieved by stubs of short-circuit or open-circuit of the terminal, wherein the stubs are stepped impedance stubs formed by cascading two or more sections of transmission lines. The phase shifter isdesigned by using a microstrip line, can achieve the function of randomly setting phase shift quantity on two frequency points, and has the advantages of low loss, low processing cost, easy integration and the like.
Description
technical field [0001] The invention discloses a dual-frequency phase shifter with separately controllable phase shift amounts, relates to a dual-frequency phase shifter and belongs to the technical field of basic electric components. Background technique [0002] A phase shifter is a device that can adjust the phase of electromagnetic waves. It plays a very important role in the phase adjustment of the phased arrayradar antenna, the modulation of the phase of the radio frequency communication signal, and the control of the phase of the measurement system. In the 1960s, with the rapid development of phased arrayradar, the importance of its key component, the phase shifter, became increasingly prominent. Important applications, the research on it has been enduring for a long time. [0003] Today, with the rapid development of communication technology, the miniaturization trend of communication equipment requires communication equipment to work at two frequency points or ev...
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