Wireless transceiver having a phased array antenna panel for transmitting circularly-polarized signals with modulated angular speed
View Patent ↗A radio frequency (RF) front end chip in a phased array antenna panel for transmitting a modulated circularly-polarized signal is disclosed. The RF front end chip includes an oscillator providing an angular speed modulation signal to a quadrature generation block, the quadrature generation block providing an in-phase signal and a quadrature signal based on the angular speed modulation signal, a first amplifier receiving the in-phase signal and a data signal, and providing a modulated horizontally-polarized signal, and a second amplifier receiving the quadrature signal and the data signal, and providing a modulated vertically-polarized signal, where a modulated circularly-polarized signal is generated based on the modulated horizontally-polarized signal and the modulated vertically-polarized signal. The angular speed modulation signal controls an angular speed of the modulated circularly-polarized signal. The data signal is encoded by the angular speed modulation signal.
1. A radio frequency (RF) front end chip in a phased array antenna panel, said RF front end chip comprising:
an oscillator providing an angular speed modulation signal to a quadrature generation block;
said quadrature generation block providing an in-phase signal and a quadrature signal based on said angular speed modulation signal;
a first amplifier receiving said in-phase signal and a data signal, and providing a modulated horizontally-polarized signal;
a second amplifier receiving said quadrature signal and said data signal, and providing a modulated vertically-polarized signal.
2. The RF front end chip of claim 1 wherein said angular speed modulation signal controls an angular speed of a modulated circularly-polarized signal that is generated based on said modulated horizontally-polarized signal and said modulated vertically-polarized signal.
3. The RF front end chip of claim 1 wherein said data signal is encoded by said angular speed modulation signal.
4. The RF front end chip of claim 2 wherein said oscillator varies an angular speed of said modulated circularly-polarized signal.
5. The RF front end chip of claim 1 wherein said data signal is provided by a master chip integrated in said phased array antenna panel.
6. The RF front end chip of claim 1 wherein said oscillator is a voltage controlled oscillator.
7. The RF front end chip of claim 2 wherein said modulated circularly-polarized signal is a right-handed modulated circularly-polarized signal or a left-handed modulated circularly-polarized signal.
8. The RF front end chip of claim 1 wherein each of said first amplifier and said second amplifier is coupled to a respective phase shifter.
9. A wireless transmitter using a phased array antenna panel for transmitting wireless signals comprising:
a plurality of radio frequency (RF) front end chips each coupled to a group of antennas;
at least one of said RF front end chips receiving a data signal from a master chip, and being configured to combine said data signal with an angular speed modulation signal to provide a modulated horizontally-polarized signal and a modulated vertically-polarized signal;
a modulated circularly-polarized signal that is generated based on said modulated horizontally-polarized signal and said modulated vertically-polarized signal for transmission by at least one of said group of antennas;
wherein said at least one RF front end chip comprises an oscillator providing said angular speed modulation signal to a quadrature generation block.
10. The wireless transmitter of claim 9 wherein said quadrature generation block provides an in-phase signal and a quadrature signal based on said angular speed modulation signal.
11. A wireless transmitter using a phased array antenna panel for transmitting wireless signals comprising:
a plurality of radio frequency (RF) front end chips each coupled to a group of antennas;
at least one of said RF front end chips receiving a data signal from a master chip, and being configured to combine said data signal with an angular speed modulation signal to provide a modulated horizontally-polarized signal and a modulated vertically-polarized signal;
a modulated circularly-polarized signal that is generated based on said modulated horizontally-polarized signal and said modulated vertically-polarized signal for transmission by at least one of said group of antennas;
wherein said at least one RF front end chip comprises a first amplifier receiving an in-phase signal and said data signal, and providing said modulated horizontally-polarized signal to said at least one of said group of antennas.
12. The wireless transmitter of claim 11 wherein said at least one RF front end chip comprises a second amplifier receiving a quadrature signal and said data signal, and providing said modulated vertically-polarized signal to said at least one of said group of antennas.
13. A wireless transmitter using a phased array antenna panel for transmitting wireless signals comprising:
a plurality of radio frequency (RF) front end chips each coupled to a group of antennas;
at least one of said RF front end chips receiving a data signal from a master chip, and being configured to combine said data signal with an angular speed modulation signal to provide a modulated horizontally-polarized signal and a modulated vertically-polarized signal;
a modulated circularly-polarized signal that is generated based on said modulated horizontally-polarized signal and said modulated vertically-polarized signal for transmission by at least one of said group of antennas;
wherein said at least one RF front end chip comprises an oscillator is configured to vary said angular speed of said modulated circularly-polarized signal.