Antenna for a two-way radio
AssigneeMotorola, Inc.
InventorsJames Lynn Davis, Robert W. Pennisi
Life of this patent
Estimating the term…
Abstract
An antenna (10) includes a radiating element (20) covered with a protective cover having a high dielectric constant polymer gel (15) located therein. The gel has a dielectric constant greater than 5, and is formed by swelling a polymer that has polar functional groups with a solvent that has a high dielectric constant. The gel is covered with a jacket (14) to contain the gel and provide physical protection.
Claims14
An antenna, comprising:
- a radiating element having a length for radiating a radio frequency energy;
- a polymeric gel having a dielectric constant greater than 5 and surrounding the radiating element along the length, the polymeric gel comprising a polymer having a polar functional group and comprising a polar organic solvent having a dielectric constant greater than 20 dispersed throughout the polymer;
- and
- a cover encasing the polymeric gel.
An antenna for use with a portable communications device, comprising a radiator element encapsulated with a gel, the gel consisting of a polar organic solvent having a dielectric constant greater than 20 dispersed throughout a compatible polymer matrix containing a polar functional group.
A communication device, comprising:
- a radio transmitter section for transmitting a radio frequency signal at a desired power;
- and
- an antenna coupled to the transmitter section for radiating the radio frequency signal to produce radiated energy, the antenna comprising:
- a radiating element coupled to the transmitter section, the radiating element having a length along which radio frequency energy generated by the transmitter is radiated;
- a polymeric gel encasing the radiating element along the length;
- said polymeric gel having a dielectric constant greater than 5, and comprising a polar organic solvent having a dielectric constant greater than 20 dispersed throughout a compatible polymer matrix containing a polar functional group;
- and
- a cover surrounding the polymeric gel.
Dependencies are inferred from the claim text.