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Broadband Tunable Third-Order IMD Cancellation Using Left-Handed Transmission-Line-Based Phase Shifter
- Issue Date
- Jul-2015
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Amplifier; feedforward; intermodulation distortion; left-handed; phase shifter; transmission line
- Citation
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v.25, no.7, pp.478 - 480
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
- Volume
- 25
- Number
- 7
- Start Page
- 478
- End Page
- 480
- ISSN
- 1531-1309
- Abstract
- We demonstrate a broadband tunable third-order intermodulation distortion (IMD) cancellation architecture using a left-handed transmission line (LHTL)-based phase shifter for a feedforward amplifier. The fabricated circuit reduces the third-order IMD of the main amplifier up to 17 dB after adjusting for any frequencies between 1.5 and 2.4 GHz when the frequency difference between the two tones is 2 MHz. In addition, the circuit maintains a spurious-free dynamic range that is greater than 55 dBc at the output. This effective broadband third-order IMD cancellation method is possible because of the broadband and linearly phase-tunable characteristics of the LHTL-based phase shifter.
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Related Researcher
- Yoo, Hyoungsuk
- COLLEGE OF ENGINEERING (서울 바이오메디컬공학전공)