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Dielectric resonator antenna

About: Dielectric resonator antenna is a research topic. Over the lifetime, 8199 publications have been published within this topic receiving 111090 citations. The topic is also known as: DRA.


Papers
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Patent
01 May 2007
TL;DR: In this paper, a tower mounted amplifier (TMA), masthead amplifier (MHA), or tower mounted Boosters (TMB) is coupled to a sink via a common resonant wire.
Abstract: A RF device such as a tower mounted amplifier (TMA), mast-head amplifier (MHA), or Tower Mounted Boosters (TMB) includes a housing having a plurality of cavities and an input and an output, the input being coupled to the antenna and the output being coupled to a base station. The housing includes a transmission path holding multiple coaxial resonators. The housing further includes multiple receive paths including at least one path having a plurality of cavities, each cavity containing a dielectric resonator. The metallic transmit resonator nearest the antenna input is coupled to the first dielectric resonator via a common resonant wire. The last dielectric resonator in the receive path is coupled to a first metallic resonator of a downstream clean-up filter via another common resonant wire.

42 citations

Patent
09 Jun 2008
TL;DR: In this paper, an RFID tag includes an antenna and a chip, and the antenna includes a first polygonal dielectric material, first and second microstrip lines partially formed in the first dielectrics material, a second polygonality dielectrical material stacked on top of the first, and a third microstrip line partially forming in the second dielectrica material.
Abstract: An RFID tag includes an antenna and a chip, and the antenna includes a first polygonal dielectric material, first and second microstrip lines partially formed in the first dielectric material, a second polygonal dielectric material stacked on the first dielectric material, and a third microstrip line partially formed in the second dielectric material. According to the present invention, the RFID tag can efficiently receive electromagnetic waves to thereby maximize a readable range.

42 citations

Proceedings ArticleDOI
01 Oct 2006
TL;DR: In this paper, a reference oscillator operating at 2 GHz and based on a temperature compensated bulk acoustic wave resonator is presented, where temperature compensation is realized by addition of an extra SiO2 layer in the resonator.
Abstract: A reference oscillator operating at 2 GHz and based on a temperature compensated bulk acoustic wave resonator is presented. Temperature compensation is realized by addition of an extra SiO2 layer in the resonator. The temperature drift of the resonance frequency of the resonator is -5 ppm/K. The oscillator circuit has the Butler topology and uses the BAW resonator at series resonance. The demonstrator incorporating a high impedance resonator shows a low phase noise: -99 dBc/Hz and -120 dBc/Hz at 10 kHz and 100 kHz offset, respectively. The drift of the oscillator frequency with temperature is almost linear and almost equal to that of the stand-alone resonator. The supply voltage dependence is 100 ppm/V in this oscillator

42 citations

Journal ArticleDOI
TL;DR: In this paper, a double ring resonator (DRR) filter with a free spectral range of 50 GHz has been demonstrated with radii of 200 µm, which contains two -3 dB multimode interference couplers for I/O coupling and a -13 dB codirectional coupler in between the rings.
Abstract: A racetrack shaped double ring resonator (DRR) filter is demonstrated with radii of 200 µm. The double ring resonator contains two -3 dB multimode interference (MMI) couplers for I/O coupling and a -13 dB codirectional coupler in between the rings. A free spectral range of 50 GHz has been realized. A simulation model has been developed to describe the DRR. As fabrication tolerances do not allow the realization of two identical rings with required nm-circumference accuracy in the resonator, a frequency alignment of the resonator is indispensable. The resonance frequency tuning is performed thermally using platinum resistors which have been placed on top of the waveguides in both rings. An on-off ratio increase has been achieved of more than 3 dB, resulting in a total on-off ratio larger than 18 dB. The frequency alignment is inevitable in the case of multiple coupled micro ring resonators.

42 citations

Patent
28 Nov 1983
TL;DR: In this paper, the authors describe a quartz resonator pressure transducer that includes a generally disc-shaped resonator section, a housing surrounding the resonator and joined to the perimeter thereof, with the walls of the housing extending in opposite directions generally normal to the plane of the resonance section.
Abstract: A quartz resonator pressure transducer includes a generally disc-shaped resonator section, a housing surrounding the resonator section and joined to the perimeter thereof, with the walls of the housing extending in opposite directions generally normal to the plane of the resonator section. Selected portions of the sidewalls are made thinner than the remaining sidewall portions so that when the housing is immersed in a fluid, a non-uniform stress will be produced in the resonator section. The housing and resonator section are formed so that the frequency of vibration of the resonator section is substantially independent of temperature and relatively independent of temperature transients.

41 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023101
2022273
2021181
2020224
2019254
2018247