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rf receiver with test capability

A receiver and test signal technology, applied in receiver monitoring, synchronization error detection, transmission monitoring, etc., can solve reliability problems and other problems

Active Publication Date: 2018-06-26
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, and in applications other than radar, reliability can be an issue

Method used

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Examples

Experimental program
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Embodiment Construction

[0015] Embodiments of the present disclosure will be discussed below in the context of a radar transceiver. However, it should be noted that the present disclosure may also be applied in applications other than radar such as eg RF transceivers of RF communication devices.

[0016] So-called "single-chip radars" may include in one chip the circuits providing the core functions required for distance and / or speed measurement. Thus, the chip may include, inter alia, RF oscillators, amplifiers, mixers, filters, analog-to-digital converters and digital signal processors. figure 1 The receive path of an RF transceiver 1 (or RF receiver), eg as used in a radar distance measuring device, is illustrated. Correspondingly, the RF transceiver / receiver 1 comprises a mixer 10 which is supplied with an RF input signal S RX and the RF oscillator signal S LO , and is used to convert the RF input signal S RX Downconversion to baseband or intermediate frequency (IF) band. RF input signal S ...

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PUM

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Abstract

The present invention relates to RF receivers with testing capabilities. An RF receiver device includes: a semiconductor chip in a chip package and a test signal generator integrated in the chip. A test signal generator generates an RF test signal including first information. The RF receiver circuit integrated in the chip receives the RF input signal, downconverts the RF input signal to an intermediate frequency (IF) or baseband, and digitizes the downconverted signal to obtain a digital signal. The RF receive channel includes a coupler having first and second input ports and an output port. The output port is coupled to the input of the RF receiver circuit, the first input port receives the antenna signal, and the second input port receives the test signal from the test signal generator. A signal processor is integrated in the chip and determines whether the first information in the digital signal matches a predetermined criterion during a test cycle.

Description

technical field [0001] The present disclosure relates to the field of radio frequency (RF) transmitter or transceiver circuits, and in particular to RF receiver chips including test capabilities. Background technique [0002] Radio frequency (RF) receivers and transceivers are found in many applications, especially in the areas of radar sensors and wireless communications. In the automotive sector, there is an increasing demand for radar sensors used in so-called "adaptive cruise control" (ACC) or "radar cruise control" systems. Such a system could be used to automatically adjust the speed of a car to maintain a safe distance from other cars ahead. [0003] Today's radar systems utilize highly integrated RF circuits that combine all core functions of the radar transceiver's RF front-end into a single package (single-chip transceiver). Such an RF front-end typically includes a voltage-controlled oscillator (VCO), a power amplifier (PA), a mixer, and an analog-to-digital con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/16H04B17/20
CPCH04B17/17H04B17/0085H04B17/23H04B17/29H04B17/14H04L7/0054
Inventor K.科迪克R.斯图尔伯格
Owner INFINEON TECH AG