Journal ArticleDOI
Quarter-Wavelength Coupled Dielectric Plate Resonators for High Selectivity TE/sub 10/-Mode Filters
A.S. Podgorski,R.H. Macphie +1 more
Reads0
Chats0
TLDR
An analysis of high selectivity TE/sub 10/-mode filters with quarter-wavelength coupled resonators formed by axially spaced dielectric plates is presented and shows that high-loaded quality factors of individual resonators can be obtained by placing the resonant frequency close to the waveguide cutoff frequency and by using low-loss Iow-dielectric constant materials.Abstract:
An analysis of high selectivity TE/sub 10/-mode filters with quarter-wavelength coupled resonators formed by axially spaced dielectric plates is presented and shows that high-loaded quality factors of individual resonators can be obtained by placing the resonant frequency close to the waveguide cutoff frequency and by using low-loss Iow-dielectric constant materials. Design equations for Butterworth and Chebyschev filters are presented and employed in a three-cavity Butterworth filter having 30-MHz bandwidth at resonant frequency at 7250 MHz. Experimental results show that filter performance can be well predicted.read more
Citations
More filters
Journal ArticleDOI
Dielectric Nonlocal Metasurfaces for Fully Solid-State Ultrathin Optical Systems
Aobo Chen,Francesco Monticone +1 more
TL;DR: Most optical systems involve a combination of lenses separated by free-space regions where light acquires the required angle-dependent phase delay for a certain functionality as mentioned in this paper, which is known as flat-o...
Posted Content
Truly solid-state flat optics with dielectric nonlocal metasurfaces.
Aobo Chen,Francesco Monticone +1 more
TL;DR: In this paper, a trade-off between the length of compressed free space and the operating angular range of the system is analyzed, and a solution to break this tradeoff using nonlocal metric structures composed of suitably coupled resonant layers is proposed.
Journal ArticleDOI
Rigorous analysis of novel dielectric resonator filters with printed tuning septum
TL;DR: In this article, the authors describe the analysis of dielectric resonator filters with printed tuning septum in waveguide sections operating below cutoff, which provides better passband separation and increased stopband attenuation.
Posted Content
Dielectric nonlocal metasurfaces for fully solid-state ultra-thin optical systems
Aobo Chen,Francesco Monticone +1 more
TL;DR: In this article, a trade-off between the length of compressed free space and the operating angular range of a flat-optics device was derived, and a solution to relax this trade-offs using nonlocal metasurface structures composed of suitably coupled resonant layers was proposed.
References
More filters
Journal ArticleDOI
Dissipation Loss in Multiple-Coupled-Resonator Filters
TL;DR: In this paper, the authors examined the effect of dissipation on the response of multiple-coupled-resonator filters designed from lossless prototype low-pass filters and found that the symmetrical designs offer lower pass-band loss than the unsymmetrical designs.
Journal ArticleDOI
Maximally-flat filters in waveguide
TL;DR: The ladder network which gives a maximally-flat insertion loss characteristic is discussed and several methods of achieving its counterpart in microwave transmission lines are presented.
Related Papers (5)
Analysis of resonant frequency & quality factor of Dielectric Resonator at different dielectric constant materials
A. Sharma,S.C. Shrivastava +1 more