Patent ID: 8605823
Filing Date: 2013-12-10
Classification: H04B,H04L

Abstract:
1. A circuit, comprising: a modulation circuit to produce a first modulated electrical signal and a second modulated electrical signal, wherein the first modulated electrical signal and the second modulated electrical signal are modulated using minimum-shift keying (MSK); a phase-adjustment element to set a defined phase difference between the first modulated electrical signal received from the modulation circuit and the second modulated electrical signal to produce a phase-adjusted first modulated electrical signal; an output interface to output the phase-adjusted first modulated electrical signal and the second modulated electrical signal collectively constituting a quadrature phase-shift-keying (QPSK) modulated signal; and an antenna coupled to the output interface, wherein the antenna comprises a first antenna element and a second antenna element, wherein the first antenna element is to transmit the phase-adjusted first modulated electrical signal with a first polarization, and the second antenna element is to transmit the second modulated electrical signal with a second polarization, different from the first polarization.