Publication

Vertically Integrated Metal Sheet Waveguide-Based Dual-Band Bandpass Filter for FR3-Band Applications

2026

Abstract

This paper proposes a third-order dual-bandpass filter based on vertically integrated metal sheet waveguide(MSW) for FR3-Band applications. The filter adopts a nine-layer vertically stacked structure, and realizes dual-band passband response by exciting the TM11 and TM12 dual-mode resonances. Through the rational design of resonant cavities, coupling slots and transition matching structures, the inter-cavity coupling strength and external coupling matching performance are precisely controlled, thus ensuring optimal dual-band frequency characteristics and filtering performance. Simulated results show that the filter has dual passbands with center frequencies of 15.4 GHz and 18.0 GHz, and the corresponding 3-dB fractional bandwidths are 6.22% and 4.61%, respectively.

Official source

https://infoscience.epfl.ch/entities/publication/da7ddc52-1dd8-4f8a-ae18-7e2b22ae09d7

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/da7ddc52-1dd8-4f8a-ae18-7e2b22ae09d7

About this result

Related concepts (32)

Waveguide filter

A waveguide filter is an electronic filter constructed with waveguide technology. Waveguides are hollow metal conduits inside which an electromagnetic wave may be transmitted. Filters are devices used to allow signals at some frequencies to pass (the passband), while others are rejected (the stopband). Filters are a basic component of electronic engineering designs and have numerous applications. These include selection of signals and limitation of noise.

Analogue filter

Analogue filters are a basic building block of signal processing much used in electronics. Amongst their many applications are the separation of an audio signal before application to bass, mid-range, and tweeter loudspeakers; the combining and later separation of multiple telephone conversations onto a single channel; the selection of a chosen radio station in a radio receiver and rejection of others.

Radio frequency

Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around 20kHz to around 300GHz. This is roughly between the upper limit of audio frequencies and the lower limit of infrared frequencies. These are the frequencies at which energy from an oscillating current can radiate off a conductor into space as radio waves, so they are used in radio technology, among other uses.

Related publications (7)

Vertically Integrated Metal Sheet Waveguide-Based Dual-Band Bandpass Filter for FR3-Band Applications

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