Loss Considerations for Microstrip Resonators (Short Papers)

Belohoubek, E.; Denlinger, E.J.

doi:10.1109/tmtt.1975.1128615

Cited by 84 publications

(17 citation statements)

References 6 publications

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“…SPVD RF AMPLIFIER POWER CHARACTERISTIC VS TEMPERATUREFrom the data inTable X, the power output of the RF amplifier dropped slightly as temperature increased and fell off more significantly at lower temperatures. This is no cause for alarm since the oscillator/doubler output increases below20 The antenna did not present a 500 load to the transmitter as previously assumed. When placed in a dry hole, the antenna impedance was about 30Q but it dropped to several ohms when submerged in a roadway hole filled with water.…”

mentioning

confidence: 74%

“…They are the radiation into space, the resistive lossof the conductive currents flowing in the metal strips, and the dielectric loss of the displacement currents through the substrate. Expressing the loss factors in the form of Q values where in general Q 27r (Total energy stored) (4) Q•Energy dts'sipated' per Hertz 2720 The conductor loss (Qc) is given by 20 c characteristic impedance of microstrip line (W) fo 0 resonant frequency of the resonator (Hz) presistivity of the resonator conductor (SO-m)The dielectric loss (Qd) is given by(20,21,22) …”

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confidence: 99%

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Development of a Self Powered Vehicle Detector

Scarzello¹,

Lenko²,

Krall³

et al. 1978

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O "IC." initial program (DOT #6-3-0063, January 1976 to June 1976) provided engineering data and the design approach for the sensor module. 2 ' 3 In November 1976, a research and development program was established at NSWC/WOL to complete the necessary component research on the magnetic sensor and sensor electronics, battery evaluation and the design testing and fabrication of twenty SPVD magnetic sensor modules and housings. The program was subsequently modified to include additional component research in a newly invented omnidirectional microstrip antenna, RF oscillator and transmitter, telemetry link encoder and decoder, and development problems and associated underestimates incurred during the fabrication of the twenty SPVD systems. This final report covers all SPVD component research and development and is divided into seven major areas of 'nvestigation: (1) magnetometer development, (2) sensor system electronics development, (3) telemetry link encoder/decoder development, (4) telemetry link oscillator/transmitter development, (5) antenna development, (6) tele,,etry receiver and battery evaluations, and (7) mechanical component design and development. In addition to the above documentation, detailed drawings, diagrams, test procedures and engineering data are provided which should be adequate to reproduce the prototype SPVDs. A hard-wired version of the SPVD electronics has also been fabricated and is described. In the Discussion section, several system improvements and options are discussed which should be considered for the development or procureMent of next generation SPVD Systems. Additional documentation generated by this program or related to it may be found in References (4), (5), (6), (7), and (8).

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Development of a Self Powered Vehicle Detector

Scarzello¹,

Lenko²,

Krall³

et al. 1978

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“…It is shown that in the optimal configuration on the substrates with and , their maximum -factor cannot exceed 120 at 32 GHz for a half-wave [25] and 200 at 8 GHz for the quarter-wave microstrip resonator [26]. Herewith, the major factor limiting the total -factor at high frequencies is radiation loss.…”

Section: Quality Factormentioning

confidence: 99%

Microstrip Whispering-Gallery-Mode Resonator

Bunyaev

Barannik

Cherpak

2015

IEEE Trans. Microwave Theory Techn.

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Whispering gallery modes (WGMs) were exited in a new type of microstrip circular resonator formed under a conducting disc placed directly on or above a continuous dielectric layer. Resonance frequencies, quality factors, and distributions of the microwave field for different WGMs have been studied numerically and experimentally as a function of distance between metal and dielectric. An unloaded -factor up to 890 was obtained using polished copper disk and layer of single crystalline sapphire. Generalization of the known condition of the excitation of the WGMs in a dielectric medium is proposed.

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“…The dielectric attenuation is a function of loss tangent tan␦, related by the expression found in [8]. The attenuation resulting from power radiated from an open-ended quarter-wave resonant stub was calculated using equations adapted from [9]. However, this contribution was found to be insignificant at our frequencies.…”

Section: Attenuation Extractionmentioning

confidence: 99%

Conductor and dielectric‐property extraction using microstrip tee resonators

Fulford

Wentworth

2005

Micro & Optical Tech Letters

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A pair of microstrip tee resonators, each with a different impedance resonating element, are employed to extract conductor‐sheet resistance as well as dielectric properties. The method's performance is evaluated for copper lines on microwave laminate substrate. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 14–16, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21067

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Loss Considerations for Microstrip Resonators (Short Papers)

Cited by 84 publications

References 6 publications

Development of a Self Powered Vehicle Detector

Development of a Self Powered Vehicle Detector

Microstrip Whispering-Gallery-Mode Resonator

Conductor and dielectric‐property extraction using microstrip tee resonators

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