RF power transmission, modulation, and amplification embodiments

• US 20070090874A1
• Filed: 12/12/2006
• Published: 04/26/2007
• Est. Priority Date: 10/22/2004
• Status: Active Grant

• Current Assignee: ParkerVision, Inc.
• Original Assignee: ParkerVision, Inc.
• Inventors: Sorrells, David, Rawlins, Michael, Rawlins, Gregory
• Granted Patent: US 7,639,072 B2
• Time in Patent Office: Days
• US Class Current: 330/10
• CPC Class Codes: H03F 1/02 Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
• CPC Class Codes: H03F 1/0205 in transistor amplifiers
• CPC Class Codes: H03F 1/0211 with control of the supply voltage or current
• CPC Class Codes: H03F 1/0261 with control of the polarisation voltage or current, e.g. gliding Class A
• CPC Class Codes: H03F 1/0294 using vector summing of two or more constant amplitude phase-modulated signals
• CPC Class Codes: H03F 1/32 Modifications of amplifiers to reduce non-linear distortion by negative feedback H03F1/34
• CPC Class Codes: H03F 2200/102 A non-specified detector of a signal envelope being used in an amplifying circuit
• CPC Class Codes: H03F 2201/3206 Multiple channels are combined and amplified by only one amplifier
• CPC Class Codes: H03F 3/211 using a combination of several amplifiers H03F3/60 takes precedence
• CPC Class Codes: H03F 3/24 of transmitter output stages
• CPC Class Codes: H03F 3/38 DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers switched capacitor amplifiers H03F3/005
• CPC Class Codes: H03G 3/3042 in modulators, frequency-changers, transmitters or power amplifiers transmission power control in bidirectional transmission systems H04W52/04
• CPC Class Codes: H04B 1/04 Circuits

Abstract

Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.

Claims

1. An apparatus for RF power transmission, modulation, and amplification, comprising:

means for amplifier class transitioning; and

means for waveform distortion compensation.

2. The apparatus of claim 1, further comprising:

means for controlling said apparatus.

3. The apparatus of claim 1, wherein said means for amplifier class transitioning comprises any amplifier class transitioning embodiment illustrated in the figures.

4. The apparatus of claim 1, wherein said means for amplifier class transitioning comprises any amplifier class transitioning embodiment described in the specification.

5. The apparatus of claim 1, further comprising a multiple input single output (MISO) amplifier

6. The MISO amplifier of claim 5, comprising any MISO embodiment illustrated in the figures.

7. The MISO amplifier of claim 5, comprising any MISO embodiment described in the specification.

8. The MISO amplifier of claim 5, wherein said MISO amplifier comprises any MISO amplifier embodiment described in Section 3.5.

9. The MISO amplifier of claim 5, wherein said MISO amplifier comprises any MISO amplifier embodiment shown in FIGS. 29-36.