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E-plane filter have been widely used in microwave and millimeter-wave circuits for its high Q value, low loss and easy to realized. In this paper, a low-order W-band Wave guide E-plane fin-line band pass filter are used to provide high harmonics suppression for millimeter-wave devices such as six frequency multiplier. The equivalent circuits of the filter are analyzed and a simple CAD method is introduced...
A four-pole tri-band bandpass filter (BPF) is designed with stub-loaded resonators (SLRs). The SLR is constructed by a double spiral structure (DSS) loaded with two folded T-shape stubs at the midpoint. A tri-feeding structure is proposed to meet the required external couplings of the three passbands simultaneously. The center frequencies and bandwidths of the three passbands can be independently...
In this paper a low-loss pseudo-elliptical four-pole filter at 92.7GHz with two transmission zeros is presented in order to fulfill stringent specifications. Compared with traditional cross coupling filters, the proposed pseudo-elliptical filter can be manufactured more conveniently due to the introduced non-resonating nodes. What's more, relatively simple structures to implement extracted poles have...
A stripline diplexer with both stopband and isolation performances enhanced by metalized holes is presented in this letter. Two stripline filters are designed using folded stepped-impedance resonators (SIRs), and then a T junction is used to combine the two designed stripline filters so that a diplexer is constructed. A stripline to microstrip line transition is studied and used to guide signals from...
A WR-1.0 waveguide band-pass filter is designed and fabricated using the deep reactive ion etching (DRIE) micromachining technique. The metal conductivity is investigated for more accurate designs. Because the influence of the fabrication tolerance on the component performance cannot be negligible while the frequency increases, it is a necessary to adopt the simple structure with less resonant cavities...
This paper presents a frequency reconfigurable hybrid with broad tuning bandwidth. It consists of a broadband hybrid and an electric adjustment network. The electric adjustment network is utlized with varactor diodes. Analytical design equations are derived. The proposed hybrid was simulated. The analytical results agree well with the simulated ones. Simulation results show that by varying capacitance...
In this paper, a novel dual composite right-/left-handed (Dual-CRLH) unit is proposed. Based on the analysis of constitutive parameters, there is a different sign between the effective permittivity and permeability in a specific frequency range, thus a stop-band is produced. Besides, both passbands at lower and higher frequencies are right-handed (RH) bands, which is different from the traditional...
Microstrip filter plays an important role in harmonic suppression of vector network analyzer source. Based on microstrip theory, microstrip filter can be designed with professional EDA simulation software. This article describes the design of a 16–20GHz band-pass filter. It is applied in the stimulate source of vector network analyzer after verified on PCB. Ultimately second harmonic suppression reached...
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