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Class Information
Number: 343/850
Name: Communications: radio wave antennas > Antennas > With coupling network or impedance in the leadin
Description: Subject matter wherein an active antenna is combined with a passive network (which may be resistive, inductive, or capacitive or any combination thereof) for transmitting the signal energy between the active antenna and a source or receiver of such signal energy.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7609220 |
Channelized log-periodic antenna with matched coupling |
Oct. 27, 2009 |
| 7605760 |
Concurrent mode antenna system |
Oct. 20, 2009 |
| 7589687 |
Antenna apparatus provided with antenna element excited through multiple feeding points |
Sep. 15, 2009 |
| 7589673 |
Antenna and mobile wireless equipment using the same |
Sep. 15, 2009 |
| 7589677 |
Wireless electronic product with step-shaped wideband antenna |
Sep. 15, 2009 |
| 7586458 |
Method and system for using a transformer for FM transmit and FM receive functionality |
Sep. 8, 2009 |
| 7583231 |
Printed antenna with band rejection filter |
Sep. 1, 2009 |
| 7564410 |
Dual radiating type inner antenna for mobile communication terminal |
Jul. 21, 2009 |
| 7557766 |
Portable remote controller for tire status detector |
Jul. 7, 2009 |
| 7551143 |
Antenna feed line for portable terminal |
Jun. 23, 2009 |
| 7538729 |
Coupling antenna |
May. 26, 2009 |
| 7535432 |
Universal antenna polarization selectivity via variable dielectric control |
May. 19, 2009 |
| 7525504 |
Low cost multi-beam, multi-band and multi-diversity antenna systems and methods for wireless communications |
Apr. 28, 2009 |
| 7505001 |
Virtual short circuit for providing reference signal in RFID tag |
Mar. 17, 2009 |
| 7495624 |
Apparatus for detection of the gradient of a magnetic field, and a method for production of the apparatus |
Feb. 24, 2009 |
| 7489281 |
Quadrifilar helical antenna |
Feb. 10, 2009 |
| 7486968 |
Method and system for transmission of carrier signals between first and second antenna networks |
Feb. 3, 2009 |
| 7468700 |
Adjustable multi-band antenna |
Dec. 23, 2008 |
| 7456800 |
Receiving antenna system comprising several active antennae |
Nov. 25, 2008 |
| 7453360 |
Identification-data media |
Nov. 18, 2008 |
| 7453412 |
Nanostructured, magnetic tunable antennas for communication devices |
Nov. 18, 2008 |
| 7450071 |
Patch radiator element and array thereof |
Nov. 11, 2008 |
| 7450082 |
Small tuned-element GPS antennas for anti-jam adaptive processing |
Nov. 11, 2008 |
| 7423594 |
Antenna apparatus |
Sep. 9, 2008 |
| 7372426 |
Antenna device and radio communication apparatus |
May. 13, 2008 |
| 7372406 |
Antenna apparatus including inverted-F antenna having variable resonance frequency |
May. 13, 2008 |
| 7372424 |
High power, polarization-diverse cloverleaf phased array |
May. 13, 2008 |
| 7369096 |
Impedance matched passive radio frequency transmit/receive switch |
May. 6, 2008 |
| 7365683 |
Active smart antenna system and fabrication method thereof |
Apr. 29, 2008 |
| 7365695 |
Antenna system |
Apr. 29, 2008 |
| 7348931 |
Unbalanced power feeding antenna device for making radio communications |
Mar. 25, 2008 |
| 7336239 |
Small multi-mode antenna and RF module using the same |
Feb. 26, 2008 |
| 7333057 |
Stacked patch antenna with distributed reactive network proximity feed |
Feb. 19, 2008 |
| 7313416 |
Scalable power amplifier |
Dec. 25, 2007 |
| 7292190 |
UWB printed antenna |
Nov. 6, 2007 |
| 7283102 |
Radial constrained lens |
Oct. 16, 2007 |
| 7280084 |
Antenna system for generating and utilizing several small beams from several wide-beam antennas |
Oct. 9, 2007 |
| 7277063 |
Variable directivity antenna and variable directivity antenna system using the antennas |
Oct. 2, 2007 |
| 7265731 |
Method and apparatus for improving the performance of a multi-band antenna in a wireless terminal |
Sep. 4, 2007 |
| 7215285 |
Bi-frequency symmetrical patch antenna |
May. 8, 2007 |
| 7205955 |
Antenna |
Apr. 17, 2007 |
| 7180465 |
Compact smart antenna for wireless applications and associated methods |
Feb. 20, 2007 |
| 7180449 |
Antenna with filter |
Feb. 20, 2007 |
| 7170465 |
RF diversity antenna coupling structure |
Jan. 30, 2007 |
| 7164386 |
Space-filling miniature antennas |
Jan. 16, 2007 |
| 7148858 |
Portable receiver |
Dec. 12, 2006 |
| 7138954 |
Antenna assembly comprising a surface dipole |
Nov. 21, 2006 |
| 7132984 |
Antenna with built-in filter |
Nov. 7, 2006 |
| 7129894 |
Selectable length meander line antenna |
Oct. 31, 2006 |
| 7123209 |
Low-profile, multi-frequency, differential antenna structures |
Oct. 17, 2006 |
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