Slot fed multi-band antenna
AssigneeHughes Electronics Corporation
InventorsRonald M. Kates, Peter Petre
Life of this patent
Estimating the term…
Abstract
An antenna circuit, a method of manufacturing, and a method of operating the same are provided. An antenna member, a first dielectric layer, a top ground plane, a radiating slot ring through the top ground plane, a second dielectric layer, a stripline feed member, a third dielectric layer, and a bottom ground plane are all laminated together within a specified arrangement to form an efficient multi-band micro-strip antenna circuit. A micromachined electromagnetic switch is utilized to alter the length of the antenna member, thereby producing resonant frequencies which correlate with those radiated by the ring slot.
Claims15
An antenna circuit comprising:
- an antenna member having a first length with a high resonance frequency, a second length with a low resonance frequency, and a switch member for alternating between said first length and said second length;
- a dielectric substrate coupled to said antenna member;
- a bottom ground plane adjacent to said dielectric substrate;
- a feed member positioned in said dielectric substrate, said feed member interposed between said bottom ground plane and said antenna member;
- and
- a top ground plane interposed between said dielectric substrate and said antenna member, said top ground plane containing a radiating array having a first radiating frequency and a second radiating frequency.
A method of transmitting a high and a low resonance frequency from an antenna circuit, comprising the steps of:
- energizing a tap end of a feed member to produce an electromagnetic field;
- energizing a radiating array by the electromagnetic field;
- radiating a first radiating frequency with a first wavelength associated with a first slot and a second radiating frequency with a second wavelength associated with a second slot through the energized radiating array;
- resonating a single antenna member by the first and the second radiating frequencies;
- generating, alternately, the high resonance frequency and the low resonance frequency from a first length and a second length of the single antenna member, respectively.
Dependencies are inferred from the claim text.