A highly linear 600 MHz centre frequency, 500 MHz bandwidth 6 order Butterworth bandpass filter using a LeapFrog Gm-C topology is designed. Fully differential inverter based Operational Transconductance Amplifier (OTA) with common-mode feedback (CMFB) and common-mode feed forward (CMFF) circuit is used in the design. Cadence tool has been used on IHP SiGe BiCMOS 0.25 μm node. The filter consume...

In this paper, a novel type of dual-band bandpass filter (DBBPF) is proposed by using microstrip composite resonators, and its design method is developed based on the lumped-element equivalent circuit of the filter. Both the midband frequencies and the passband widths of the dual bands of the filter can be controlled separately. Four DBBPFs with different specifications are designed, fabricated...

This paper presents the design of a bandpass filter using directional coupler. The concept of transerval filters is applied to design of microwave filters. The directional coupler is used as a transversal filtering element. This is achieved by loading the coupled ports of the filter with open-circuited stubs. The dependence of filter characteristics on the stub lengths and impedances is demonst...

This paper presents the simulation, design and implementation of bandpass filters in rectangular waveguides. The filters are simulated and designed by using a numerical analysis program based on the Wave Iterative Method (WIM) called WFD (Waveguide Filter Design) simulation. This simulation program can analyze the electrical network of filters. The sample waveguide filter is designed based on a...

This paper describes the design and analysis of planar dual-band bandpass filters using stepped impedance resonators. In the proposed filter configurations, dual-band bandpass filters are designed, and realized by using inverted stepped impedance (SIR) resonators. The conventional half wavelength open circuited stub single frequency resonators are replaced with dual band simple two section step...

─ This paper presents a novel miniaturized parallel coupled-line bandpass filter by etching some slot resonators on the strip for suppressing the first spurious response. These slots perform a serious LC resonance property in certain frequency and suppress the spurious signals. By properly tuning these slot dimensions, multiple closed notches can be generated in the vicinity of spurious harmoni...

In this paper bandpass filter has been designed and simulated using different windows techniques. Blackman, Hamming and Kaiser Windows techniques are used for design of bandpass filters using matlabs. The performances of all designs have been compared in terms of sidelobe attenuation and mainlobe width. The simulated result shows that Blackman window gives maximum mainlobe width as compared to ...