Composite structure frequency hopping filter and adjusting method thereof
A composite structure and filter technology, applied in the field of filters, can solve the problem that the performance and volume of the filter cannot be balanced, and achieve the effect of saving circuit area, improving performance, and concise structure
Pending Publication Date: 2021-02-12
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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[0004] In view of the above analysis, the embodiment of the present invention aims to provide a frequency hopping filter with a composite structure to solve the problem that the performance and size of the existing filter cannot be balanced
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[0036] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.
[0037] A specific embodiment of the present invention discloses a frequency hopping filter with a composite structure, such as figure 1 shown. The composite structure frequency hopping filter comprises: 4 coupling inductors, which are sequentially connected in series between the input port Port 1 and the output port Port2 of the filter; the input end, the connection between the two coupling inductors and the output 5 connection points are formed; 5 adjustment networks are sequentially connected in parallel between the 5 connection points and the ground; wherein, the 1st, 3rd, and 5th adjustme...
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The invention relates to a frequency hopping filter with a composite structure and an adjusting method thereof, belongs to the technical field of filters, and solves the problem that a filter in the prior art cannot consider both performance and volume. The composite structure frequency hopping filter comprises four coupling inductors which are sequentially connected in series between the input end and the output end of the filter; the input end, the joint of the two coupling inductors and the output end form five connecting points; the five regulating networks are sequentially connected in parallel between the five connecting points and the ground; wherein the first adjusting network, the third adjusting network and the fifth adjusting network are parallel LC resonance networks; the parallel LC resonance network comprises a capacitor array and an inductor connected with the capacitor array in parallel. The second adjusting network and the fourth adjusting network comprise capacitor arrays. The frequency coverage range of the composite structure filter is far larger than that of a single structure filter, the structure is simple, and the circuit area is saved.
Description
technical field [0001] The invention relates to the technical field of filters, in particular to a frequency-hopping filter with a composite structure. Background technique [0002] Frequency hopping communication is one of the important means of communication at present. For general portable multi-frequency communication equipment, after the signal passes through the power amplifier, due to the nonlinearity of the amplifier device, it is necessary to use a frequency hopping filter to filter the redundant harmonic signals and various noises. Scatter interference filtering. [0003] Today's multi-frequency communication equipment terminal adjustable filter mainly has two implementation methods, one is to design a series of fixed filters separately for different frequency hopping frequency bands, and use the segment selection switch to switch; the other is to use the frequency hopping method, by changing The frequency conversion is carried out by means of the resonance freque...
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Login to View More IPC IPC(8): H03H7/01
CPCH03H7/01H03H2007/0192
Inventor 王好尹军舰李仲茂郭瑞邱昕
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI