Patent ID: 9407349
Filing Date: 2016-08-02
CPC Classification: H04B,H04L

Claim Text:
1. A polarization-angle-division diversity wireless communication system including a wireless receiver for receiving an electromagnetic wave transmitted from a polarization-angle-division diversity wireless transmitter, the receiver including: a first receiving antenna which receives a first polarized wave from the polarization-angle-division diversity wireless transmitter to obtain a first input signal; a second receiving antenna which receives a second polarized wave from the polarization-angle-division diversity wireless transmitter to obtain a second input signal; a first rotational frequency detecting unit to block frequencies at least twice as high as a third frequency in the first signal to generate a first received signal; a second rotational frequency detecting unit to block frequencies at least twice as high as the third frequency in the second input signal to generate a second received signal; a multi-delay composer configured to delay and to compose the first received signal and the second received signal; and the polarization-angle-division diversity wireless transmitter including: an electromagnetic wave transmitting unit configured to transmit first and second independent circularly polarized waves, wherein the electromagnetic wave transmitting unit comprises: a first modulator configured to modulate an information signal having a first frequency by a second frequency to output a first modulated signal; a second modulator configured to modulate the first modulated signal by the third frequency to obtain a first output signal; a first transmitter which transmits the first output signal using the first circularly polarized wave; a phase shift circuit configured to shift a phase of the third frequency by 90 degrees; a third modulator configured to modulate the first modulated signal by the shifted phase of the third frequency to obtain a second output signal; and a second transmitter which transmits the second output signal using the second circularly polarized wave.