摘要:
In a broadband printed dipole antenna for wireless applications, metal plates of a radiation portion, a feed-in portion and a bandwidth modulation portion are formed on a substrate. Two radiation portions come with a specific shape and have an interval between the two radiation portions. The feed-in portion is composed of two separated long bars and coupled to one of the specific shaped radiation portions. The bandwidth modulation portion is disposed symmetrically adjacent to the feed-in portion, such that the impedance matching can be adjusted to form a broadband dipole antenna for WiMAX applications.
摘要:
A method and system are designed for transaction in a search region. The transaction system includes merchant servers and a portable electronic device. The portable electronic device further includes a calculation module, a communication module, a positioning module, and a display module. The portable electronic device is used to search the merchant servers in a set range, and transaction is performed through wireless communication transmission. The transaction method includes positioning the portable electronic device by the portable electronic device itself and setting an effective range according to the position of the portable electronic device; searching the merchant servers in the effective range; selecting one from the merchant servers as a transaction server; performing a transaction procedure between the portable electronic device and the transaction server. After the transaction is ended, the transaction server sends back an acknowledgement message to the portable electronic device.
摘要:
An internal printed antenna is revealed. The internal printed antenna includes a dielectric substrate, a ground plane, a metal loop radiating portion, and a microstrip feed line. The metal loop radiating portion includes a plurality of bends and a gap area is formed between adjacent bends. Two short circuit parts are arranged at the gap area.
摘要:
The present invention relates to a broadband RFID (Radio Frequency Identification) label (tag) antenna that includes a base, a label chip, and an antenna module. The present invention is applicable in a surface of a metal object. Thereby, a microstrip antenna with a miniaturized label antenna is accomplished. Moreover, a dual mode is applied for conquering problems brought about by the narrowband of the microstrip antenna, and the antenna is bended and miniaturized. Accordingly, preferable impedance match is achieved between the antenna and the chip.
摘要:
A multi-band antenna for tablet computers is revealed. The antenna includes a first path, a second path, a third path, a fourth path, a fifth path, a sixth path, a seventh path, an eighth path and a grounding portion, connected to one another. Thereby the antenna can cover the GSM 850/900/1800/1900/ UMTS and LTE 700/2300/2700 operations.
摘要:
The present invention discloses a handheld device capable of independently actuating camera and method thereof. The handheld device comprises an input module, a storage module, a mobile phone module and a camera module. The input module has a first button and a second button. The storage module is connected to the input module and stores a first operating system and a second operating system. The mobile phone module is connected to the storage module and provides a mobile phone function. The camera module is connected to the storage module and provides a camera function. When the first button is pressed, the first operating system is activated for enabling the mobile phone module to provide the mobile phone function. When the second button is pressed, the second operating system is activated for enabling the camera module to provide the camera function.