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Tunable antenna module and mobile device

A technology for mobile devices and antenna modules, which is applied to antenna supports/installation devices, devices that make antennas work in different frequency bands at the same time, antennas, etc. The effect of saving production costs and saving inventory management work

Inactive Publication Date: 2017-01-11
MEDIATEK INC
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Problems solved by technology

However, the switching circuit may cause second and / or third harmonic spurs (harmonic spurs) that interfere with the received signal of the antenna, wherein the second and / or third harmonic spurs of the transmitted signal are reflected by the switching circuit. , so that the reflected signal is received by the antenna
[0007] For example, if mode CA1 establishes an uplink with a carrier frequency (such as 704MHz-716MHz) and two downlinks in the middle frequency band MB (such as 1800MHz to 2200MHz), the transmission signal (such as 1408MHz-2112MHz) 2nd and / or 3rd harmonic spikes can interfere with the received signal in the mid-band MB, reducing the signal-to-noise ratio of the received signal

Method used

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  • Tunable antenna module and mobile device
  • Tunable antenna module and mobile device
  • Tunable antenna module and mobile device

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Embodiment Construction

[0019] Certain terms are used throughout this patent specification and claims to refer to particular components. It should be understood by those skilled in the art that hardware manufacturers may refer to the same component by different terms. The patent specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" or "including" mentioned in the entire specification and claims are open-ended terms, so it should be interpreted as "including but not limited to"; "component", "system" and "equipment" mean A computer-related entity, which may be hardware, software, or a combination of hardware and software. In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device may be directly elec...

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Abstract

A tunable antenna module for a mobile device includes an antenna, a radiator, a frequency-division circuit and one or more impedance-tuning circuits. The antenna comprises a feed point for feeding in a radio frequency signal. The radiator is coupled to the feed point to resonate the radio frequency signal. The frequency-division circuit is coupled to the radiator of the antenna for forming one or more signal paths for one or more of component frequencies of a radio-frequency signal of the antenna. One or more the impedance-tuning circuits are coupled to the frequency-division circuit for tuning an impedance of the antenna at one or more of the component frequencies of the radio-frequency signal. The radiator, an open slot and a ground are formed in a metal housing of the mobile device. The production cost is saved and the stock control work is reduced.

Description

technical field [0001] The present invention relates to wireless communications, and more particularly to adjustable antenna modules and mobile devices. Background technique [0002] For advanced high-speed wireless communication systems (such as sending data at a higher peak data rate), the Long-Term Evolution Advanced (LTE-A) system is an enhancement of the Long-Term Evolution (LTE) system. 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) standardization. The goals of the LTE-A system are faster switching of power states and improvement of cell edge performance, including bandwidth expansion, coordinated multipoint transmission / reception (Coordinated Multipoint Transmission / Reception, COMP), and uplink MIMO (Multiple Input Multiple Output, MIMO) and other topics. [0003] For bandwidth expansion, carrier aggregation (Carrier Aggregation, CA) is introduced into the LTE-A system, in which two or more component carriers are aggregated together t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/50H01Q5/335H01Q5/314H01Q1/44H01Q1/22
Inventor 戴祯坊
Owner MEDIATEK INC
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