Antenna and radio wave receiving/transmitting apparatus therewith and method of manufacturing the antenna
US6680713B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 30, 2001 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Oct 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/357
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A compact antenna enabling to produce high gain is based on an antenna main body is constructed in such a way that a plurality of resonance sections, each having parallel-connected respective inductance sections and capacitance sections, are electrically connected in series, and a frequency adjusting capacitance section is connected electrically in series between a ground section at the ground potential and an exit end of the antenna main body. The resonance sections are constructed so that that the characteristic frequency curves overlap one another at least in the width portion to enable the antenna man body as a whole to resonate at substantially one resonance frequency, which is higher than the normal vibration frequency at which each resonance section resonates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.