Antenna with multiple radiators
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 7, 2004
Grant Date -
N/A
app pub date -
Apr 9, 2003
filing date -
Apr 9, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An antenna can efficiently radiate at both the lower cell phone frequency band of about 850 MHz and the higher cell phone frequency band of about 1920 MHz that are in current use. The antenna includes a vertical conductor with an upper portion (32) of a length that is about 1/2 wavelength at the lower frequency to effectively radiate at that frequency. An upper PRD (phase reversal device) (40) located along the upper conductor portion divides it into top and bottom parts (60, 70) each of about 1/2 wavelength at the higher frequency, the PRD providing a 180.degree. phase reversal at the higher frequency without affecting the lower frequency. A lower conductor portion (34) includes a coil (80) that produces a phase reversal at the lower frequency, a lower PRD (82), and a short straight conductor part (84). A lower conductor part (90) extends through the lower PRD (82) and connects through a mount member (130) to a coaxial feed.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully