Abstract: Disclosed is an automatic switching communication method including: obtaining LTE communication state information of a main communication module for communicating with outside through a directional antenna and a sub-communication module for communicating with the outside through a directional antenna; registering the LTE communication state information of the main communication module and the sub-communication module in a routing table; determining whether the main communication module and the sub-communication module are capable of performing LTE communication; and comparing with pre-specified communication quality coefficients of the main communication module and the sub-communication module to adjust a routing path.

Abstract: A circuit board according to an embodiment includes a first insulating layer; a second insulating layer disposed on the first insulating layer and including a cavity; and a plurality of pads disposed on the first insulating layer and having top surfaces exposed through the cavity; wherein the cavity of the second insulating layer includes: a bottom surface positioned higher than a top surface of the first insulating layer; and an inner wall extending from the bottom surface, wherein the inner wall is perpendicular to top or bottom surface of the second insulating layer, wherein the bottom surface of the cavity includes: a first bottom surface positioned lower than a top surface of the pad and positioned outside an arrangement region of the plurality of pads; and a second bottom surface positioned lower than the top surface of the pad and positioned inside the arrangement region of the plurality of pads, and wherein a height of the first bottom surface is different from a height of the second bottom surface.

Abstract: Provided is a heater for an aerosol-generating device including a first electrically conductive pattern configured to perform heating and a second electrically conductive pattern arranged in parallel with the first electrically conductive pattern. The first electrically conductive pattern and/or the second electrically conductive pattern may include a material having a relatively small resistance temperature coefficient. Accordingly, a temperature increase rate of the heater may be greatly improved.

Abstract: An aerosol generation system includes a tobacco medium accommodation portion and a moisturizer accommodation portion located at an upstream end or a downstream end of the tobacco medium accommodation portion. In addition, an aerosol generation system includes an aerosol generation device including an elongated cavity for accommodating the cigarette, a first heater for heating the tobacco medium accommodation portion, and a second heater for heating the moisturizer accommodation portion.

Abstract: Provided is an aerosol-generating device including a heating assembly including an accommodation space into which at least a portion of the aerosol-generating article is accommodated, and at least one spiral coil arranged outside of the accommodation space and configured to generate an induced magnetic field. The spiral coil has a plate shape curved along a circumference direction of the accommodation space and a center around which the spiral coil is wound is at an external surface of the accommodation space.

Abstract: An insulating material for an aerosol generating device includes an insulation sheet and a waterproof film arranged on at least one surface of the insulation sheet.

Abstract: As an embodiment of the present disclosure, there is disclosed an aerosol generating device including: a heater configured to generate an aerosol by heating an aerosol generating substrate; a storage unit configured to store information regarding a first time period and a second time period for controlling a temperature of the heater; and a controller configured to control power supplied to the heater, wherein the controller, when the first time period time elapses after the temperature of the heater reaches the first target temperature, changes the temperature of the heater to a second target temperature for the second time period, and the sum of the first time period and the second time period is a time period in a preset change.

Abstract: An aerosol generation device having a differentiated heating function and an aerosol-generating article applied thereto are provided. The aerosol generation device according to some embodiments of the present disclosure may include a housing configured to form an accommodation space for accommodating an aerosol-generating article and a heater part configured to heat the aerosol-generating article accommodated in the accommodation space to generate an aerosol. Here, by including a first heating part configured to heat a first part of the aerosol-generating article from a first distance and a second heating part configured to heat a second part of the aerosol-generating article from a second distance longer than the first distance, the heater part can heat each part of the aerosol-generating article in a differentiated manner.

Abstract: A laser-based aerosol generation device and a heating method thereof are provided. The aerosol generation device according to some embodiments of the present disclosure may include an aerosol-generating article, a laser radiation part configured to radiate a laser and heat the aerosol-generating article to generate an aerosol, and a controller configured to control the laser radiation part. The controller may adjust a radiation area of the laser to precisely control heating of the aerosol-generating article, and accordingly, development of a burnt taste during smoking can be limited, and smoking satisfaction can be improved.

Abstract: An aerosol generation system includes a tobacco medium accommodation portion and a moisturizer accommodation portion located at an upstream end or a downstream end of the tobacco medium accommodation portion. In addition, an aerosol generation system includes an aerosol generation device including an elongated cavity for accommodating the cigarette, a first heater for heating the tobacco medium accommodation portion, and a second heater for heating the moisturizer accommodation portion.

Abstract: An aerosol generation device having a vibration part and a control method thereof are provided. The aerosol generation device according to some embodiments of the present disclosure may include a housing including an accommodation space for accommodating an aerosol-generating article, a heating element configured to be inserted into the aerosol-generating article accommodated in the accommodation space and heat the accommodated aerosol-generating article to generate an aerosol, and a vibration part. The vibration part may vibrate the heating element to prevent formation of stuck-on residue on the heating element and allow removal of stuck-on residue formed on the heating element.

Abstract: Provided herein is an ultrasonic-based aerosol generation device. The aerosol generation device according to some embodiments of the present disclosure includes a liquid reservoir configured to store an aerosol-forming substrate in a liquid state, a wick configured to absorb the stored aerosol-forming substrate, an ultrasonic vibrator configured to vaporize the absorbed aerosol-forming substrate through ultrasonic waves to generate an aerosol, and a controller configured to control the ultrasonic vibrator. Here, at least a portion of the wick and at least a portion of the ultrasonic vibrator may be implemented to have a flat shape and may be disposed to come in close contact with each other. In this way, a vaporization area may be maximized, and vapor production may be significantly enhanced.

Abstract: An aerosol generation device having a differentiated heating function and an aerosol-generating article applied thereto are provided. The aerosol generation device according to some embodiments of the present disclosure may include a housing configured to form an accommodation space for accommodating an aerosol-generating article and a heater part configured to heat the aerosol-generating article accommodated in the accommodation space to generate an aerosol. Here, the heater part may include a first heating part configured to heat a first part of the aerosol-generating article and a second heating part configured to heat a second part of the aerosol-generating article. At least one opening may be formed in the second heating part to heat the first part and the second part of the aerosol-generating article in a differentiated manner.

Abstract: An aerosol generation device and a control method thereof are provided. The aerosol generation device according to some embodiments of the present disclosure may include a liquid supply part configured to supply a liquid aerosol-forming substrate, a vaporization element configured to vaporize the supplied liquid aerosol-forming substrate to generate an aerosol in a vaporization space, and an airflow path configured to allow the aerosol generated in the vaporization space to move toward a mouthpiece. Here, the vaporization element, an inlet of the airflow path, and an outlet of the airflow path may be formed in a nonlinear structure, and accordingly, a droplet discharge phenomenon and an airflow path blockage phenomenon may be prevented.

Abstract: An aerosol generation device with improved heating efficiency is provided. The aerosol generation device according to some embodiments of the present disclosure includes a case in which an insertion hole is formed to receive an aerosol-generating article, a heater configured to heat the aerosol-generating article inserted through the insertion hole to generate an aerosol, and an adapter disposed between the insertion hole and the heater. The adapter may allow a medium portion of the inserted aerosol-generating article to be deformed to a desired pressed shape so that the heating efficiency of the heater is improved.

Abstract: A heater for aerosol generation devices and an aerosol generation device including the same are provided. The heater according to some embodiments of the present disclosure may include a first electroconductive pattern which is configured to perform a heating function and a second electroconductive pattern which is made of a material with a temperature coefficient of resistance higher than that of the first electroconductive pattern and is configured to perform a temperature measurement function for the heater. In this case, since a temperature of a heating surface of the heater may be accurately measured through the second electroconductive pattern, control precision for the heater may be improved.

Abstract: A laser-based aerosol generation device and a heating method thereof are provided. The aerosol generation device according to some embodiments of the present disclosure may include a laser radiation part configured to heat an aerosol-generating article to generate an aerosol by radiating laser to aerosol-generating article. By instantaneously heating a local surface of the aerosol-generating article, the laser heating method may ensure immediate aerosol generation without a preheating time.

Abstract: Provided herein are an induction heating-type aerosol-generating article and device with improved heating efficiency. The induction heating-type aerosol-generating article according to some embodiments of the present disclosure includes a medium portion which includes an aerosol-forming substrate, a susceptor element which forms a closed loop to wrap around at least a portion of the medium portion and which is configured to, due to induction heating being performed therein, heat at least a portion of the medium portion, and an outer wrapper which wraps around at least a portion of the susceptor element. In this case, since the susceptor element is embedded in the aerosol-generating article and directly transmits heat to the medium portion, and an induced current may smoothly flow through the formed closed loop, heating efficiency may be significantly improved.

Abstract: Provided herein are an induction heating-type aerosol generation device, which has a function of determining the suitability of an aerosol-generating article, and a control method thereof. The induction heating-type aerosol generation device according to some embodiments of the present disclosure includes a housing which has an accommodation space for accommodating an aerosol-generating article, an inductor disposed to surround at least a portion of the aerosol-generating article accommodated in the accommodation space, and configured to inductively heat the accommodated aerosol-generating article, and a controller which controls the inductor. The controller may apply a predetermined article determining frequency to the inductor, may measure an electrical signal that changes according to the applied article determining frequency, and may determine suitability of the accommodated aerosol-generating article only on the basis of a result of measurement of the electrical signal, without an additional sensor.

Abstract: Provided herein are an ultrasonic-based aerosol generation device with a new structure capable of reducing cartridge replacement costs and a control method thereof. The ultrasonic-based aerosol generation device according to some embodiments of the present disclosure may include a replaceable cartridge which is configured to store a liquid aerosol-forming substrate and a control main body which is configured to be coupled to the cartridge. Also, the control main body may include a controller and a vibration member which is configured to generate ultrasonic vibrations to vaporize the aerosol-forming substrate stored in the cartridge. Here, the controller may monitor a temperature of the vibration member and controls operation of the vibration member on the basis of a monitoring result.