Antenna arrangement
First Claim
1. A antenna arrangement comprising a folded structure having first and second sections defining a transmission line, wherein each of the first and second sections comprises a physically-shortened electric element having a respective feed point at its free end.
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Accused Products
Abstract
An antenna arrangement comprises a folded structure (100) comprising first and second sections (102,104) defining a transmission line. The sections may be meander-line elements or other physically-shortened electric elements, for example a helical element. Respective feed points (103,105) are provided at the free ends of the sections (102,104), thereby enabling independent connections to be made for different modes, such as transmit and receive.
In additional embodiments, top-loading and additional short-circuit elements may be provided to improve performance and reduce antenna volume. The impedances of the sections (102,104) may be arranged to differ by adjusting conductor width or by fabricating one of the sections as a plurality of conductors connected in parallel. Discrete components may be included within the antenna structure, to provide enhanced design possibilities, while multi-band operation is enabled by fabrication of additional folded structures within the same volume.
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Citations
12 Claims
- 1. A antenna arrangement comprising a folded structure having first and second sections defining a transmission line, wherein each of the first and second sections comprises a physically-shortened electric element having a respective feed point at its free end.
Specification