A transmit filter using half-wavelength straight-line resonators requires substantial spacing between adjacent resonators.
The filter contains 3-pole half-wavelength straight-line resonators and two π-shaped waveguides for bandwidth tuning.
Simulation showed that it is approximately 19% smaller than a conventional half-wavelength straight-line resonator filter.
The filter is composed of three-pole half-wavelength straight-line resonators with a 5.0-GHz center frequency and a 100-MHz bandwidth.
An acoustic energy harvester is introduced that uses a quarter-wavelength straight-tube acoustic resonator with polyvinylidene fluoride (PVDF) piezoelectric cantilever beams placed inside the resonator.
The effects of using this method were evaluated by simulation using a filter composed of 3-pole half-wavelength straight-line resonators with an H-shaped waveguide between each pair and additional electric pads for post-tuning trimming.
"If I were starting something now I would make that bet, to get up straight onto wavelengths".
Operation of the optically pumped DFL is based on two localized quarter wavelength phase shifts in a straight channel waveguide DFB cavity.
Example: NFT 543 Wavelengths above 543 nm, pass straight through.
Other measurement results for the short-wavelength defects using a 300-mm straight edge are set out in Table 1.
They shined the light in through the edge of the plate, perpendicular to the rows of holes, and expected the light to diffract straight back out if its wavelength was twice the rows' 347-nanometer spacing.
