Abstract:
A method for effective synthesis of multiple downconversion local oscillator (LO) frequencies within a harmonic rejection mixer (HRM) is presented that employs principles...Show MoreMetadata
Abstract:
A method for effective synthesis of multiple downconversion local oscillator (LO) frequencies within a harmonic rejection mixer (HRM) is presented that employs principles similar to direct digital frequency synthesis. The proposed method reduces the tuning range required of the downconversion oscillator in broadband applications. A passive HRM that implements the proposed LO synthesis method and is robust to both gain and phase mismatch is designed in 130 nm CMOS and covers the 48-860 MHz band with a master clock frequency of 0.77-1.72 GHz. Based on Monte Carlo simulations, while considering device mismatches over a 3σ spread, harmonic rejection better than 63 dB is observed for all selectable LO frequencies.
Date of Conference: 05-08 August 2012
Date Added to IEEE Xplore: 03 September 2012
ISBN Information:
ISSN Information:
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- IEEE Keywords
- Index Terms
- Harmonic Rejection ,
- Harmonic Mixing ,
- Monte Carlo Simulation ,
- Frequency Selectivity ,
- Local Oscillator ,
- Master Clock ,
- Phase Mismatch ,
- Low-pass ,
- Fundamental Frequency ,
- Duty Cycle ,
- Multiple Frequencies ,
- Phase Error ,
- Time Coefficient ,
- CMOS Process ,
- Operating Band ,
- Gain Coefficient ,
- Conversion Gain ,
- Odd Harmonics ,
- Equivalent Frequency ,
- Gain Error ,
- Digital Television ,
- Clock Phase ,
- dB For Frequencies ,
- Clock Generator ,
- Frequency Span
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Harmonic Rejection ,
- Harmonic Mixing ,
- Monte Carlo Simulation ,
- Frequency Selectivity ,
- Local Oscillator ,
- Master Clock ,
- Phase Mismatch ,
- Low-pass ,
- Fundamental Frequency ,
- Duty Cycle ,
- Multiple Frequencies ,
- Phase Error ,
- Time Coefficient ,
- CMOS Process ,
- Operating Band ,
- Gain Coefficient ,
- Conversion Gain ,
- Odd Harmonics ,
- Equivalent Frequency ,
- Gain Error ,
- Digital Television ,
- Clock Phase ,
- dB For Frequencies ,
- Clock Generator ,
- Frequency Span