Methods and Apparatus for Performing Passive Antenna Testing with Active Antenna Tuning Device Control

摘要

A wireless electronic device may contain at least one adjustable antenna tuning element for use in tuning the operating frequency range of the device. The antenna tuning element may include radio-frequency switches, continuously/semi-continuously adjustable components such as tunable resistors, inductors, and capacitors, and other load circuits that provide desired impedance characteristics. A test system that is used for performing passive radio-frequency (RF) testing on antenna tuning elements in partially assembled devices is provided. The test system may include an RF tester and a test host. The tester may be used to gather scattering parameter measurements from the antenna tuning element. The test host may be used to ensure that power and appropriate control signals are being supplied to the antenna tuning element so that the antenna tuning element is placed in desired tuning states during testing.

主权项

1. A method for using a radio-frequency test system to test an electronic device under test that contains a tunable antenna having an adjustable antenna tuning element, the method comprising:
supplying power to the adjustable antenna tuning element; while the power is being supplied to the antenna tuning element, placing the adjustable antenna tuning element in a plurality of tuning states to tune the tunable antenna; and while the adjustable antenna tuning element is being placed in each of the plurality of tuning states, gathering test data from the electronic device under test with the radio-frequency test system.