DUAL POLARIZATION ANTENNA AND METHOD FOR TRANSMITTING AND RECEIVING SIGNAL USING THE SAME

• US 20120189078A1
• Filed: 01/24/2012
• Published: 07/26/2012
• Est. Priority Date: 01/25/2011
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: EOM, Soon Young, JUNG, Young Bae, JEON, Soon Ik, CHOI, Jae Ick
• Granted Patent: US 8,811,525 B2
• Time in Patent Office: Days
• US Class Current: 375/295
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 21/06 Arrays of individually energised antenna units similarly polarised and spaced apart
• CPC Class Codes: H01Q 21/245 provided with means for varying the polarisation polarising devices H01Q15/24; tracking by comparing linear polarisation compounds G01S3/146; reducing depolarisation effects H04B7/00; polarisation diversity H04B7/10
• CPC Class Codes: H01Q 3/26 varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture H01Q3/12, H01Q3/22, H01Q3/24 take precedence

Abstract

The present invention relates to a general active array antenna apparatus capable of environmentally and temporally controlling radio frequency (RF) polarization resource necessary for wireless communication in order to improve communication quality and increase communication capacity. The antenna according to the present invention has a form of an active array antenna element, wherein each active array antenna element has a structure in which it may generate orthogonal dual polarizations and includes two input terminals and output terminals. An end orthogonal dual polarization antenna is connected to a polarization control apparatus that may process analog or digital signals, and the polarization control apparatus is controlled by or communicate with an antenna main controlling apparatus performing a polarization control algorithm. Ultimately, an object of this antenna apparatus is to improve communication quality and increase communication capacity.

Claims

1. A transmission antenna apparatus comprising:

a signal distributing unit distributing a plurality of input signals to generate independent signals;

a channel inputting unit inputting each of the independent signals to a corresponding channel;

a multi channel unit including a plurality of channels to which the independent signals are input; and

a dual polarization antenna unit generating and transmitting a dual polarization,

wherein the multi channel unit adjusts phases and/or amplitudes of the independent signals for each of the channels to which the independent signals are input and intersects and combines the phase and/or amplitude adjusted independent signals with respect to the plurality of input signals to generate a plurality of combined independent signals, and

wherein the dual polarization antenna unit transmits each of the plurality of combined independent signals input from the multi channel unit as orthogonal components of the dual polarization.

2. The transmission antenna apparatus of claim 1, wherein the adjustment of the phases and/or the amplitudes of the independent signals for each of the channels is temporally controlled.

3. The transmission antenna apparatus of claim 1, wherein the dual polarization antenna unit includes a plurality of dual polarization antenna elements, the dual polarization antenna element having an orthogonal intersecting structure or an orthogonal intersecting dipole structure and simultaneously generating a plurality of independent orthogonal polarizations based on the structures.

4. The transmission antenna apparatus of claim 1, wherein the plurality of input signals are two different input signals,

the signal distributing unit distributes two independent signals from each of the two different input signals,

the multi channel unit attenuates and removes one of independent signals configuring the combined independent signals, for each of the two different input signal, and

the dual polarization antenna unit transmits two combined independent signals of which one is attenuated and removed as each of orthogonal components of the orthogonal polarizations.

5. The transmission antenna apparatus of claim 1, wherein the signal distributing unit receives two input signals to distribute each of two independent signals,

the multi channel unit attenuates and removes one of two independent signals configuring the combined independent signals, and

the dual polarization antenna unit transmits two combined independent signals of which one is attenuated and removed as each of orthogonal components of the orthogonal polarizations.

6. The transmission antenna apparatus of claim 1, wherein the channel inputting unit intersects and inputs independent signals distributed from the plurality of input signals with respect to each of the channels of the multi channel unit.

7. The transmission antenna apparatus of claim 1, wherein a weight for the phase and/or the amplitude is added to each of the channels to which the independent signal is input to adjust the phase and/or the amplitude of the independent signal.

8. The transmission antenna apparatus of claim 1, further comprising a monitoring/controlling unit provided at a separate position from the signal distributing unit, the channel inputting unit, the multi channel unit, and the dual polarization antenna unit, wherein the monitoring/controlling unit controls the adjustment of the phase and/or the amplitude of the independent signal and selects an independent signal to be attenuated and removed.

9. The transmission antenna apparatus of claim 1, wherein the control of the adjustment of the phase and/or the amplitude of the independent signal and the selection of the independent signal to be attenuated and removed are performed in a base station apparatus connected to the antenna apparatus.

10. A reception antenna apparatus comprising:

a dual polarization antenna unit receiving a dual polarization signal;

a multi channel unit including a plurality of channels to which each of orthogonal components of the dual polarization signal is input;

a signal combining unit combining signals with each other,

wherein the multi channel unit distributes independent signals having different characteristics in each of the orthogonal components to input the distributed independent signals for each of the channels and adjusts and outputs phases and/or amplitudes of the independent signals for each of the channels, and

wherein the signal combining unit combines signals having the same characteristics among the independent signals output from the multi channel unit with each other.

11. A method for transmitting a signal using a dual polarization antenna, the method comprising:

distributing each of a plurality of input signals as a plurality of independent signals;

inputting each of the plurality of independent signals to a corresponding channel;

adjusting phases and/or amplitudes of the independent signals for each of the channels to which the independent signals are input;

intersecting and combining the phase and/or amplitude adjusted independent signals with respect to the plurality of input signals to generate combined independent signals; and

inputting and transmitting each of the combined independent signals as orthogonal components of a dual polarization antenna.

12. The method of claim 11, wherein the adjustment of the phases and/or the amplitudes of the independent signals are temporally controlled.

13. The method of claim 11, wherein the plurality of input signals are two different input signals,

in the distributing, two independent signals are distributed from each of the two different input signals,

in the adjusting, one of independent signals configuring the combined independent signals is attenuated and removed for each of the two different input signal, and

in the transmitting, two combined independent signals of which one is attenuated and removed is input as each of the orthogonal components of the dual polarization antenna.

14. The method of claim 11, wherein in the distributing, two independent signals are distributed from each of two input signals,

in the adjusting, one of the two independent signals configuring the combined independent signals is attenuated and removed, and

in the transmitting, two combined independent signals of which one is attenuated and removed is input as each of the orthogonal components of the dual polarization antenna.

15. The method of claim 11, wherein in the adjusting, a weight for the phase and/or the amplitude is added to each of the channels to which the independent signal is input to adjust the phase and/or the amplitude of the independent signal.

16. A method for receiving a signal using a dual polarization antenna, the method comprising:

receiving a dual polarization signal;

distributing independent signals having different characteristics in each of the orthogonal components;

inputting the distributed independent signals for each of a plurality of channels

adjusting phases and/or amplitudes of the independent signals for each of the channels; and

combining signals having the same characteristics among the phase and/or amplitude adjusted independent signals with each other.