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Registered Apparatus and Method for Compensating for Delay Mismatch Between Amplitude Component Signal and Phase Component Signal
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Apparatus and Method for Compensating for Delay Mismatch Between Amplitude Component Signal and Phase Component Signal
- Inventors
- Hun Sik Kang, Sok-Kyu Lee
- Application No.
- 12961745 (2010.12.07)
- Publication No.
- 20110142177 (2011.06.16)
- Registration No.
- 8514972 (2013.08.20)
- Country
- UNITED STATES
- Project Code
- 09MR7300, Research on Radio Transmission Technology for IEEE 802.11 VHT WLAN, Sok-Kyu Lee
- Abstract
- Provided are an apparatus and method for compensating for a delay mismatch between an amplitude component signal and a phase component signal. The apparatus includes an amplitude path delay obtainer configured to obtain amplitude-delay information on a delay occurring in a propagation path of an amplitude component signal, a phase path delay obtainer configured to obtain phase-delay information on a delay occurring in a propagation path of a phase component signal, a delay controller configured to calculate and output a difference between the obtained amplitude path delay and the obtained phase path delay, and a variable delayer configured to compensate for a delay by changing a delay value on the basis of the delay difference output from the delay controller. Using an asynchronous method, in which a signal obtained before and after a delay is used as the clock signal of a memory device and the clock signal of a register to find the delay, it is possible to reduce the complexity of the constitution and increase power efficiency.