A Reconfigurable Dual-Band Bandpass Filter
A band-pass filter, dual-band technology, applied in the field of wireless communication, can solve the problem of a constant reconfigurable filter without two frequency bands, achieve flexible and miniaturized design, reduce processing difficulty, and overcome the bandwidth change. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0039] Such as figure 1 As shown, the reconfigurable dual-band bandpass filter of this embodiment includes an upper layer microstrip line structure 1, a middle layer dielectric substrate 2, a lower layer ground metal patch (not shown in the figure) and a metal via 3, so The metal through hole 3 runs through the microstrip line structure 1, the dielectric substrate 2 and the grounding metal patch in sequence, so that the microstrip line structure 1 and the grounding metal patch are connected through the dielectric substrate 2; the microstrip line structure 1 includes a second A resonator 4, a second resonator 5, a third resonator 6 and a fourth resonator 7, the first resonator 4 and the second resonator 5 adopt short-circuit end coupling (that is, magnetic coupling) after proper bending and folding A group of resonators is formed, and the third resonator 6 and the fourth resonator 7 adopt open end coupling (that is, electrical coupling) to form another group of resonators after...
Embodiment 2
[0049] In this embodiment, a constant absolute bandwidth reconfigurable dual-band bandpass filter is designed. figure 1 On the basis of the structure, adjust the appropriate coupling coefficient k according to formula (1) i,j To achieve the requirement of constant absolute bandwidth, adjust the coupling strength of the end to the external quality factor Q e Perform a certain matching compensation, adjust the source-load coupling strength to change the zero point position of the out-of-band transmission, and improve the selectivity of the filter. The circuit and electromagnetic simulation software of this embodiment is Agilent Advanced Design System (ADS). The constant absolute bandwidth reconfigurable dual-band bandpass filter is selected and processed on a dielectric substrate with a dielectric constant of 2.55, a thickness of 0.8mm, and a loss tangent of 0.0029. The specific physical dimensions are shown in Table 1 below. Figure 7 The simulation and measurement results of...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com