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A radio frequency (RF) device and a method for operating the same

A device and radio frequency technology, which is applied in the field of operating RF devices with BIST circuits, and can solve the problems of reducing the production volume of RF integrated circuits and degrading the attenuation characteristics of test equipment.

Active Publication Date: 2019-11-15
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, corrosion of contacts and connectors can degrade the attenuation characteristics of conventional test equipment
Therefore, even if a large number of RF ICs can be manufactured, the testing of RF ICs will become a bottleneck that reduces the production volume

Method used

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  • A radio frequency (RF) device and a method for operating the same
  • A radio frequency (RF) device and a method for operating the same
  • A radio frequency (RF) device and a method for operating the same

Examples

Experimental program
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example 1

[0048] Example 1. In one embodiment, a radio frequency (RF) device includes a plurality of mixers, each of the plurality of mixers having a first input terminal, a second input terminal, and an output terminal; and a self-test circuit . The self-test circuit includes a buffer having an input terminal and an output terminal, the buffer being configured to buffer a reference signal from a local oscillator (LO) to generate a first RF signal at a first frequency; and a plurality of delay elements, a plurality of delay The elements each have a different propagation delay, the delay elements each having a first end coupled to the buffer output terminal and a second end configured to provide a corresponding delayed signal based on the first RF signal, wherein the self-test circuit is It is configured to couple the second end of the delay element to the corresponding first input terminal of the plurality of mixers in the test mode to provide each mixer with a corresponding delay signa...

example 2

[0049] Example 2. The RF device of example 1, wherein the RF device further comprises an LO, wherein an output terminal of the LO is further coupled to second input terminals of the plurality of mixers to provide the second RF signal.

example 3

[0050] Example 3. The RF device of examples 1 or 2, wherein the self-test circuit is configured to change the phase shift of the buffer from the first value to the second value in the test mode.

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Abstract

A radio frequency (RF) device and a method for operating the same are provided. The radio frequency (RF) device includes a plurality of mixers, each of the plurality of mixers having a first input terminal, a second input terminal, and an output terminal; and a self-test circuit. The self-test circuit includes a buffer having an input terminal and an output terminal, the buffer configured to buffer a reference signal from a local oscillator (LO) to produce a first RF signal at a first frequency; and a plurality of delay elements having different respective transmission delays, the delay elements each having a first end coupled to the output terminal of the buffer and a second end configured to provide a respective delayed signal based on the first RF signal, where the self-test circuit isconfigured to, in a test mode, couple the second ends of the delay elements to respective first input terminals of the plurality of mixers to provide each mixer with the respective delayed signal, andwhere the second input terminals of the mixer are configured to receive a second RF signal having the first frequency.

Description

technical field [0001] The present invention relates generally to systems and methods for radio frequency (RF) devices, and in particular embodiments, to RF devices with built-in self-test (BIST) circuitry and methods for operating RF devices with BIST circuitry. Background technique [0002] As the demands on radio frequency (RF) systems have increased, there has been a corresponding interest in integrating RF systems on silicon-based integrated circuits rather than using discrete semiconductor components. Examples of RF systems include, for example, automotive radar and high frequency communication systems. By using silicon integration, large numbers of such RF systems can be manufactured at a lower cost than systems based on discrete components. [0003] One type of circuit component often employed in RF systems is a mixer. A mixer typically mixes a signal having a first frequency with a signal having a second frequency to generate a signal having a third frequency, whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40G01R31/28
CPCH04B1/40G01R31/2851H04B17/0085H04B17/104H04B17/19H03D7/165H03D2200/0045H04B1/0082H04B1/0475H04B2001/307H04B1/30
Inventor 萨韦里奥·特罗塔
Owner INFINEON TECH AG