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Planar inverte F antennas including current nulls between feed and ground couplings and related communications devices

A communication device, current zero point technology, applied to antenna support/installation devices, devices that enable antennas to work in different bands at the same time, electrical short antennas, etc., can solve problems such as large capacitive coupling

Inactive Publication Date: 2006-11-29
SONY ERICSSON MOBILE COMM AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As shown in the figure, the PIFA in Figure 1.2(g) has multiple bends, but this structure will make the capacitive coupling between the two branches (main branch and secondary branch) relatively large

Method used

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  • Planar inverte F antennas including current nulls between feed and ground couplings and related communications devices
  • Planar inverte F antennas including current nulls between feed and ground couplings and related communications devices
  • Planar inverte F antennas including current nulls between feed and ground couplings and related communications devices

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Embodiment Construction

[0038] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. However, this invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size of each element may be exaggerated for clarity. It will also be understood that when an element is referred to as being "coupled" or "connected" to another element, it can be directly coupled or connected to the other element or intervening elements may also be present. Similarly, when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Like reference numerals refer to like elements throughout. ...

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Abstract

A planar inverted F antenna may be configured for operation at an operating frequency band, and the planar inverted F antenna may include first (103), second (105), and third (107) antenna segments, a reference voltage coupling (108), and a feed coupling (109). The first and second antenna segments may be separated by at least approximately 3 mm, and the third antenna segment may couple the first and second antenna segments. The reference voltage and feed couplings may both be provided on the first antenna segment, and a current null may be present between the feed and reference voltage couplings at the operating frequency band. Related communications devices are also discussed.

Description

technical field [0001] The present invention relates to the field of antennas, and more particularly, to planar inverted-F antennas and related communication devices. Background technique [0002] The size of wireless terminals is constantly decreasing, with many current wireless terminals being less than 11 centimeters in length. Accordingly, there is increasing interest in small antennas that can be used as built-in antennas for wireless terminals. Inverted-F antennas, for example, are very suitable for use in wireless terminals, especially wireless terminals that are continuously miniaturized. Inverted-F antennas can offer small size, low cost, and high mechanical strength. Typically, a conventional inverted-F antenna may include a conductive element in a spaced relationship to a ground plane. For example, some representative inverted-F antennas are described in US Pat. Nos. 5,684,492 and 5,434,579, which are incorporated herein by reference in their entirety. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q9/04H01Q5/00H01Q1/24H01Q5/10H01Q5/371
CPCH01Q9/0442H01Q9/0421H01Q1/243H01Q5/0058H01Q5/371
Inventor S·L·万斯G·海斯
Owner SONY ERICSSON MOBILE COMM AB