Signal detector device and method and corresponding system

Abstract

A signal detector apparatus and method are disclosed, the signal detector apparatus comprising: a quadrature demodulator configured to receive an input signal, a first reference signal and a second reference signal in quadrature to the first reference signal , the quadrature demodulator is further configured to generate a plurality of output signals from the input signal, first and second reference signals, the plurality of output signals representing the magnitude and phase of the input signal; and one or more an inverter circuit having first and second programmable output polarities, the plurality of output signals being output through the quadrature demodulator when the inverter circuit is set to the first programmable output polarity , the plurality of output signals are inverted and output through the quadrature demodulator when the inverter circuit is set to a second programmable output polarity.

Description

technical field [0001] The present invention relates generally to signal analysis, and in particular embodiments to a signal detector apparatus and method. Background technique [0002] Communications, biomedical, and radar systems often measure the magnitude and phase of analog signals. For example, a wireless transmitter and receiver including a beamforming array may measure the magnitude and phase of the received signal in each RF device of the beamforming chain. Wireless devices, such as base stations and access nodes, handheld devices, such as cell phones and tablets, and personal computers may all need to measure the magnitude and phase of received signals. Such measurements usually require high accuracy and are usually performed in small devices or packages. [0003] Accurate measurement of the magnitude and phase of a signal can be performed using a vector network analyzer (VNA: vector network analyzer). This measurement system can provide high accuracy, but usual...

AI Technical Summary

Problems solved by technology

However, traditionally, the accuracy of analog systems can be improved by increasing the size of the building blocks in the system, which can increase the power consumption of the system

Increasing component size or power increases accuracy, but increases chip size, reduces efficiency, or is limited by other technical constraints

Also, sometimes the improvement of the device may not be enough to achieve the desired performance

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