Three resonator parasitically coupled microstrip antenna array element
US4835538A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Jan 15, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0414
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A three resonator capacitively coupled microstrip antenna structure includes an inverted stacked array of elements with a lowermost driven element directly connected to a transmission line connector, and passive elements stacked above the driven element and separated from the driven element and from one another by dielectric layers. The dimensions, spacings and quality factors of the elements are chosen so that at least one, and possibly two elements are resonant at any given frequency within a desired frequency operating range. The resulting antenna structure offers very broad bandwidth at relatively low VSWR in a compact, rugged package. The manner in which parameters of the stacked antenna structure are specified to achieve desired VSWR bandwidth and radiation efficiency is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.