Signal transmitting/receiving apparatus and method for controlling polarization

• US 9,270,360 B2
• Filed: 10/25/2012
• Issued: 02/23/2016
• Est. Priority Date: 12/21/2011
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Eom, Soon-Young, Choi, Jae-Ick, Lee, Kwang-Jae
• Primary Examiner(s): McGue, Frank J
• Application Number:
  US13/660,473
• Publication Number:
  US 20130162474A1
• Time in Patent Office: 1,216 Days
• Field of Search: 342/361
• US Class Current: 1/1
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001
• 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: H04B 7/0615 of weighted versions of same signal
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity

Abstract

Disclosed are signal transmitting apparatus and method capable of generating polarizations that can be controlled in real time by allocating weights to signals. A signal transmitting method for generating variable polarizations having any vector through a plurality of radiating elements vertical to each other includes: receiving an input signal and separating the input signal into a plurality of separated signals according to the number of radiating elements; and allocating weights for controlling vectors of the variable polarizations to each of the plurality of separated signals, wherein the vectors of the variable polarizations are represented by a vector sum of the plurality of separated signals allocated with weights.

Claims

1. A signal transmitting method for controlling polarizations, comprising:

separating an input signal into a plurality of separated signals according to a number of radiating elements;

independently allocating weights for controlling vectors of variable polarizations to each of the separated signals;

generating a wirelessly transmittable type of transmitting signals using the separated signals allocated with the weights; and

transmitting each transmitting signal corresponding to the radiating elements through the radiating elements that are perpendicular to each other in order to generate the variable polarizations,

wherein amplitudes and phases of each the separated signals are independently controlled by the weights,

wherein each of the weights is independently determined, based on vector values of desired polarizations in the variable polarizations, a vector sum of the variable polarizations radiated from each of the radiating elements, and each axes locating the radiating elements.

2. The signal transmitting method of claim 1, wherein each of the weight is represented by amplitude and phase.

3. The signal transmitting method of claim 1, further comprising:

when the input signal is plural, combining separated signals radiated through same radiating element among the separated signals allocated with the weights,

wherein in the generating of the transmitting signals, the wirelessly transmittable type of transmitting signals are generated using the combined signals.

4. The signal transmitting method of claim 1, wherein when the input signal is a baseband signal, the generating of the transmitting signals includes:

digitally modulating the separated signals allocated with the weights; and

generating an RF signal using the digital modulation signal.

5. The signal transmitting method of claim 1, wherein when the input signal is the digital modulation signal, in the generating of the transmitting signal, an RF signal is generated using the separated signals allocated with the weights.

6. A signal receiving method for controlling polarizations, comprising:

receiving variable polarizations having any vector through a plurality of radiating elements that are disposed to each other in order to be perpendicular;

separating received signals having different characteristics from orthogonal components of the received variable polarizations;

independently allocating weights to each of the separated received signals; and

combining signals having same characteristics among the received signals allocated with the weights,

wherein amplitudes and phases of each the separated received signals are independently controlled by the weights,

wherein each of the weights is independently determined, based on vector values of desired polarizations in the variable polarizations, a vector sum of the variable polarizations received through each of the radiating elements, and each axes locating the radiating elements.

7. A signal transmitting apparatus for controlling polarizations, comprising:

a weight control unit configured to separate an input signal into a plurality of separated signals according to a number of radiating elements and independently allocate weights for controlling vectors of variable polarizations to each of the separated signals;

a transmitting signal generating unit configured to generate a wirelessly transmittable type of transmitting signals using the separated signals allocated with the weights; and

an antenna unit configured to transmit each transmitting signal corresponding to a the radiating elements through the radiating elements that are perpendicular to each other in order to generate the variable polarizations,

wherein amplitudes and phases of each the separated signals are independently controlled by the weights,

wherein each of the weights is independently determined, based on vector values of desired polarizations in the variable polarizations, a vector sum of the variable polarizations radiated from each of the radiating elements, and each axes locating the radiating elements.

8. The signal transmitting apparatus of claim 7, wherein each of the weight is represented by amplitude and phase.

9. The signal transmitting apparatus of claim 7, wherein when the input signal is plural, the weight control unit further includes a signal combiner configured to combine separated signals radiated through same radiating element among the separated signals allocated with the weights, and

the transmitting signal generating unit generates the wirelessly transmittable type of transmitting signals using the combined signals.

10. The signal transmitting apparatus of claim 7, wherein when the input signal is a baseband signal, the transmitting signal generating unit includes:

a digital modulator configured to digitally modulating the separated signals allocated with the weights; and

an analog converter configured to generate an RF signal using the digital modulated signal.

11. The signal transmitting apparatus of claim 7, wherein when the input signal is the digital modulation signal, the signal transmitting unit generates an RF signal using the separated signals allocated with the weights.

12. A signal receiving apparatus for controlling polarizations, comprising:

an antenna unit configured to receive variable polarizations having any vector through a plurality of radiating elements that are disposed to each other in order to be perpendicular;

a signal separator configured to separate received signals having different characteristics from orthogonal components of the received variable polarizations;

a weight allocator configured to independently allocate weights to each of the separated received signals; and

a signal combiner configured to combine signals having same characteristics among the received signals allocated with the weights,

wherein amplitudes and phases of each the separated received signals are independently controlled by the weights,

wherein each of the weights is independently determined, based on vector values of desired polarizations in the variable polarizations, a vector sum of the variable polarizations received through each of the radiating elements, and each axes locating the radiating elements.