Simplified radio frequency receiver

Abstract

An oscillator is provided that is arranged to function as a simplified receiver. The oscillator has a resonator portion and a non-linear portion, which cooperate to generate an oscillating signal. The resonator portion is positioned to receive a modulated signal. In one configuration, the oscillator operates at a frequency offset from the frequency of the carrier for the modulated signal. In this simple arrangement, the oscillator functions as an active mixer, and generates a product output signal. The output signal is extracted from a high impedance point of the oscillator's non-linear device. The output signal is a demodulated or mixed signal, and may be further processed to detect a data signal.

Description

RELATED APPLICATIONS[0001]The present invention is a continuation patent application of U.S. patent application Ser. No. 11 / 577,988, filed Apr. 25, 2007, now U.S. Pat. No. 8,145,139, issued Mar. 27, 2012, which is a U.S. Patent Application filed under 35 U.S.C. §371 as the U.S. national phase of International Application No. PCT / US2005 / 038443, filed Oct. 25, 2005, which designated the U.S. and claims the benefit of priority to U.S. Provisional Patent Application No. 60 / 621,619, filed Oct. 25, 2004, each of which is hereby incorporated in its entirety including all tables, figures and claims.FIELD OF THE INVENTION[0002]The field of the present invention is wireless receiver devices. More particularly, a wireless transceiver is disclosed for use in a wireless radio system.BACKGROUND[0003]The use of short-range miniature radios for communications has increased significantly in the last several years. With the widespread adoption of the Bluetooth standard, the introduction of network pr...

AI Technical Summary

Benefits of technology

This approach enables smaller, more power-efficient radio modules, allowing for new applications and reducing the need for invasive battery replacements, thereby enhancing the proliferation of low-cost wireless communication devices.

Problems solved by technology

In addition to their communications and sensing circuits, these devices require a discrete and exhaustible power source (typically a battery) to operate.

In some cases, replacement of a discharged battery may even require invasive surgery.

The circuits are quite complicated and require at least doubling of the radio size.

Further, these receiver components consume power, thus contributing to shortened battery life.

This feature, combined with their inherent non-linearity, might result in injection locking, which is regularly observed in the laboratory.

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