Method and Apparatus for Testing Frequency Division Duplexing Transceiver
First Claim
1. A radio frequency, RF, loop test apparatus for testing Frequency Division Duplexing, FDD, transceiver in a radio communication system, the apparatus comprises:
- A first directional coupling means operably coupled to receive, at a first port of the first directional coupling means, a test signal from a transmitter via a duplex filter; and
A Mixer operably coupled to receive the test signal from a second port of the first directional coupling means, convert the frequency of the test signal from the transmitter to a frequency that is receivable by a receiver;
Wherein the first directional coupling means operably coupled to receive, at a third port of the first directional coupling means, the converted test signal from the mixer; and
output, at the first port of the first directional coupling means, the converted test signal to the receiver via the duplex filter.
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Abstract
The embodiments disclose a radio frequency loop test method and apparatus for testing frequency division duplexing transceiver in a radio communication system. The apparatus comprises a first directional coupling means and a mixer. The first directional coupling means is coupled with a duplex filter to receive, at a first port, a test signal from a transmitter via the duplex filter; the mixer is coupled with first directional coupling means on both sides to receive the test signal from a second port of the first directional coupling means, convert the frequency of the test signal from the transmitter to a frequency that is receivable by a receiver, and to output the converted test signal to the first directional coupling means, and the first directional coupling means is coupled to receive, at a third port, the converted test signal from the mixer and output, at the first port, the converted test signal to the receiver via the duplex filter.
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Citations
18 Claims
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1. A radio frequency, RF, loop test apparatus for testing Frequency Division Duplexing, FDD, transceiver in a radio communication system, the apparatus comprises:
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A first directional coupling means operably coupled to receive, at a first port of the first directional coupling means, a test signal from a transmitter via a duplex filter; and A Mixer operably coupled to receive the test signal from a second port of the first directional coupling means, convert the frequency of the test signal from the transmitter to a frequency that is receivable by a receiver; Wherein the first directional coupling means operably coupled to receive, at a third port of the first directional coupling means, the converted test signal from the mixer; and
output, at the first port of the first directional coupling means, the converted test signal to the receiver via the duplex filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 18)
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12. The method for testing Frequency Division Duplexing, FDD, transceiver in a radio communication system, the method comprises:
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Establishing a test loop between a transmitter and a receiver, wherein the test loop includes a duplex filter, a directional coupling means, a synthesizer and a mixer, the duplex filter and the directional coupling means provide two-way transmission path for the test loop; Transmitting a test signal from the transmitter to the test loop via the duplex filter; Converting the frequency of the test signal to a frequency that is receivable by the receiver; Receiving the converted test signal from the test loop via the duplex filter; and Acquiring a loop test result based on the received test signal. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification