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This paper demonstrates a wireless uncooled infrared (IR) detector based on a Lamb wave resonator with low detection limit. Wireless transmission is achieved by near-field electromagnetic coupling. The wireless IR detector shows a monotonic decrease in impedance magnitude and resonant frequency with the change of the power density of the IR irradiation from 0.01 mW/mm2 to 0.7 mW/mm2. The average responsivities...
Resonant Wireless Power Transfer is an emerging technique for exchanging energy in the near field. Common resonators take the form of splitted ring resonators, coils, spiral, or helical resonators. The radiating behaviors of coupled resonators are investigated in this paper and properties important for practical applications are illustrated. We show that the selection of the appropriate resonant frequency...
Electromagnetic Wireless Power Transmission (WPT) can be realized by using resonant coils coupled via their magnetic fields; in order to extend the range for power transmission, it is convenient to introduce additional relay elements. By considering a simple, yet rigorous, equivalent network, we derive a general property which is useful for the design of wireless power transfer networks with relay...
Electromagnetic Wireless Power Transmission (WREL) can be achieved by using resonant coils coupled via their magnetic fields; these resonant coils must be, in addition, properly coupled to the source and load. By using a simple, yet rigorous, equivalent network, we introduce a computer-aided design procedure to reach the maximum efficiency for a given value of the resonators quality factor and for...
Electromagnetic wireless resonant energy links (WRELs) can be realized by using resonant coils coupled via their magnetic fields. By means of a simple equivalent network we investigate the efficiency of WRELs. It is demonstrated that, in order to improve the efficiency, a matching network at the input and output section should be used. In our arrangement the matching network is made by placing the...
A folded stepped impedance resonator (SIR) modified by adding an inner quasi-lumped SIR stub is used as the basic block of a new configuration of dual band-pass filter. The main advantage of the proposed filter is to allow independent control of the features of the first and the second pass bands. Additional design flexibility can be achieved by allowing the stub to be located at an arbitrary position...
A novel compact coupled planar resonator (CCPR) based VCO (voltage controlled oscillator) using mode-coupling technique was developed in response to expensive high Ceramic and SAW resonators based signal source for wireless communications. One of the problems related to the conventional Ceramic/SAW based resonators (with high Q and low phase noise) is the challenge for integration in IC form. Instead...
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