A non-contact communication medium according to an embodiment of the present technology is a non-contact communication medium for a recording medium cartridge, including: a circuit component; a support substrate; and an antenna coil. The circuit component has a memory unit capable of storing management information relating to the recording medium cartridge therein. The support substrate supports the circuit component. The antenna coil includes a coil unit that is electrically connected to the circuit component and formed on the support substrate, an inductance value of the coil unit being 0.3 μH or more and 2.0 μH or less.

A controllable electrical outlet may comprise a resonant loop antenna. The resonant loop antenna may comprise a feed loop electrically coupled to a radio-frequency (RF) communication circuit and a main loop magnetically coupled to the feed loop. The controllable electrical outlet may comprise one or more electrical receptacles configured to receive a plug of a plug-in electrical load and may be configured to control power delivered to the plug-in electrical load in response to an RF signal received via the RF communication circuit. The RF performance of the controllable electrical outlet may be substantially immune to devices plugged into the receptacles (e.g., plugs, power supplies, etc.) due to the operation of the resonant loop antenna. For example, degradation of the RF performance of the controllable electrical outlet may be less when the controllable electrical outlet includes the resonant loop antenna rather than other types of antennas.

In various embodiments, an electronic device may include: a housing including an inner space, and a first antenna structure disposed in the inner space of the housing, the first antenna structure including: a dielectric substrate, at least one first conductor disposed in a first area of the dielectric substrate, and at least one second conductor disposed in a second area of the dielectric substrate extending from the first area of the dielectric substrate. The electronic device may further include at least one third conductor capacitively coupled with the at least one second conductor, a first wireless communication circuit configured to transmit and/or receive a signal of a first frequency band through the at least one first conductor, and a second wireless communication circuit configured to transmit and/or receive a radio signal of a second frequency band through the at least one second conductor and the at least one third conductor.

In various embodiments, an electronic device may include: a housing including an inner space, and a first antenna structure disposed in the inner space of the housing, the first antenna structure including: a dielectric substrate, at least one first conductor disposed in a first area of the dielectric substrate, and at least one second conductor disposed in a second area of the dielectric substrate extending from the first area of the dielectric substrate. The electronic device may further include at least one third conductor capacitively coupled with the at least one second conductor, a first wireless communication circuit configured to transmit and/or receive a signal of a first frequency band through the at least one first conductor, and a second wireless communication circuit configured to transmit and/or receive a radio signal of a second frequency band through the at least one second conductor and the at least one third conductor.

Disclosed is an antenna device that includes a capacitor element, a first coil, a second coil, and a capacitor. One end of the first coil is connected to a feeding point and another end of the first coil is connected to the capacitor element. One end of the second coil is connected to the capacitor element. One end of the capacitor is connected to the second coil and another end of the capacitor is connected to a grounding point.

Disclosed is an antenna device that includes a capacitor element, a first coil, a second coil, and a capacitor. One end of the first coil is connected to a feeding point and another end of the first coil is connected to the capacitor element. One end of the second coil is connected to the capacitor element. One end of the capacitor is connected to the second coil and another end of the capacitor is connected to a grounding point.

An antenna system capable of operating among all LTE bands, and also capable of operation among all remote side cellular applications, such as GSM, AMPS, GPRS, CDMA, WCDMA, UMTS, and HSPA among others. The antenna system provides a low cost alternative to active-tunable antennas suggested in the prior art for the same multi-platform objective.

An antenna system capable of operating among all LTE bands, and also capable of operation among all remote side cellular applications, such as GSM, AMPS, GPRS, CDMA, WCDMA, UMTS, and HSPA among others. The antenna system provides a low cost alternative to active-tunable antennas suggested in the prior art for the same multi-platform objective.

An electronic modulating device is provided. The electronic modulating device includes a substrate, a plurality of first modulating electrodes disposed on the substrate, and a plurality of second modulating electrodes disposed on the substrate. The area of one of the first modulating electrodes is greater than the area of one of the second modulating electrodes. The ratio of the number of first modulating electrodes to the number of second modulating electrodes is in a range from 0.5 to 2.0.

A medical instrument is provided in which a wireless IC tag is fixed to a first or second body, such that at least part of the wireless IC tag is positioned more frontward than a front end of a first ring and a front end of a second ring and more backward than a support. A winding axis of an inductor is orthogonal to the up-down direction and intersects the front-back direction so that electric, magnetic, or electromagnetic field coupling is established between a resonant circuit and a metal medical instrument. Moreover, the metal medical instrument either emits a transmission signal, which has a frequency equal to a predetermined resonant frequency and supplied from the resonant circuit, as an electromagnetic wave, or it receives a reception signal having a frequency equal to the predetermined resonant frequency as an electromagnetic wave, and supplies the reception signal to the resonant circuit.