Signal testing system
First Claim
1. A signal testing system, adapted for testing at least a device-under-test while selectively connecting the system to a reference device externally, the signal testing system comprising:
- a first circulator, being connected to the reference device for receiving a reference signal transmitting therefrom;
a second circulator, being connected to the device-under-test for receiving a testing signal transmitting therefrom;
a first channel emulator, receiving a signal transmitted from the first circulator for simulating a first wireless transmission environment;
a first power divider, receiving a signal transmitted from the first channel emulator for performing an operation of power assignment thereon while transmitting the divided signal to the second circulator;
a second channel emulator, receiving a signal transmitted from the second circulator for simulating a second wireless transmission environment;
a second power divider, receiving a signal transmitted from the second channel emulator for performing an operation of power assignment thereon while transmitting the divided signal to the first circulator;
a first duplexer, for receiving signals transmitted from the first power divider and the second power divider in respective; and
a signal analyzer, receiving and analyzing signals transmitted from the first duplexer;
wherein, the first circulator generates a signal to be received by the reference device while receiving the divided signal transmitted from the second power divider; and
the second circulator generates a signal to be received by the device-under-test while receiving the divided signal transmitted from the first power divider.
1 Assignment
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Accused Products
Abstract
A signal testing system is disclosed, which is capable of achieving a bi-directional wireless transmission measurement enabling mutual testing between device-under-tests and reference devices by configuring a symmetrical structure with circulators and multiplexers. Moreover, the signal testing system not only is capable of fetching signal out of a test path by the use of power dividers and then transmitting the fetched signal to a signal analyzer to be analyzed so as to enable the system to support multiple testing, but also is capable of generating a signal used for referencing by a signal synthesizer so as to enable the system to support numerous tests. In addition, both the signal analyzer and the signal synthesizer have a switch control integrated therein, which enables the signal analyzer to perform analysis on signals of different frequency bandwidth, and enables the signal synthesizer to generate signals of different frequency bandwidth as require.
25 Citations
25 Claims
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1. A signal testing system, adapted for testing at least a device-under-test while selectively connecting the system to a reference device externally, the signal testing system comprising:
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a first circulator, being connected to the reference device for receiving a reference signal transmitting therefrom; a second circulator, being connected to the device-under-test for receiving a testing signal transmitting therefrom; a first channel emulator, receiving a signal transmitted from the first circulator for simulating a first wireless transmission environment; a first power divider, receiving a signal transmitted from the first channel emulator for performing an operation of power assignment thereon while transmitting the divided signal to the second circulator; a second channel emulator, receiving a signal transmitted from the second circulator for simulating a second wireless transmission environment; a second power divider, receiving a signal transmitted from the second channel emulator for performing an operation of power assignment thereon while transmitting the divided signal to the first circulator; a first duplexer, for receiving signals transmitted from the first power divider and the second power divider in respective; and a signal analyzer, receiving and analyzing signals transmitted from the first duplexer; wherein, the first circulator generates a signal to be received by the reference device while receiving the divided signal transmitted from the second power divider; and
the second circulator generates a signal to be received by the device-under-test while receiving the divided signal transmitted from the first power divider. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification