Wireless transceiver for transmitting circularly-polarized signals with modulated angular speed

• US 10,122,404 B2
• Filed: 09/28/2017
• Issued: 11/06/2018
• Est. Priority Date: 10/13/2016
• Status: Active Grant

• Current Assignee: Movandi Corporation
• Original Assignee: Movandi Corporation
• Inventors: Yoon, Seunghwan, Besoli, Alfred Grau, Rofougaran, Ahmadreza, Shirinfar, Farid, Rofougaran, Maryam, Gharavi, Sam, Boers, Michael
• Primary Examiner(s): Perez, James M
• Application Number:
  US15/718,527
• Publication Number:
  US 20180109404A1
• Time in Patent Office: 404 Days
• Field of Search: 375259-285, 375295-315
• CPC Class Codes: H04B 1/40 Circuits

Abstract

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.

Claims

1. A wireless transmitter using a phased array antenna panel for transmitting wireless signals comprising:

a radio frequency (RF) front end chip coupled to an antenna in said phased array antenna panel;

said RF front end chip comprising an oscillator providing an angular speed modulation signal to a quadrature generation block;

said RF front end chip receiving a data signal from a master chip, and being configured to combine said data signal with said angular speed modulation signal to provide a modulated polarized signal for transmission by said antenna in said phased array antenna panel.

2. The wireless transmitter of claim 1 wherein said quadrature generation block provides an in-phase signal and a quadrature signal based on said angular speed modulation signal.

3. The wireless transmitter of claim 1 wherein said data signal is encoded by said angular speed modulation signal.

4. The wireless transmitter of claim 1 wherein said angular speed modulation signal controls an angular speed of said modulated polarized signal.

5. The wireless transmitter of claim 1 wherein said oscillator is a voltage controlled oscillator.

6. The wireless transmitter of claim 1 wherein said modulated polarized signal is a right-handed modulated circularly-polarized signal or a left-handed modulated circularly-polarized signal.

7. The wireless transmitter of claim 1 wherein said master chip is integrated in said phased array antenna panel.