A 2 to 5GHz-Band Self Frequency Dividing Quadrature Mixer Using Current Re-Use Configuration
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概要
- 論文の詳細を見る
A 2 to 5GHz-band self frequency dividing quadrature mixer utilizing current re-use configuration with small size and broad band operation is proposed for a direct conversion receiver and a low-IF receiver of cognitive radio. The proposed mixer operates at twice the LO frequency by directly using a static type flip-flop frequency divider as the LO switching circuit for quadrature signal generation. The current re-use configuration is realized because the dc current of the frequency divider and the RF common-emitter amplifier share the same current flow path. Simulations and experiments verify that the proposed mixer offers broad band operation, miniaturization, and low power consumption. The mixer IC fabricated by 0.35μm SiGe-BiCMOS technology achieved the conversion gain of 20.6dB, noise figure of 11.9dB and EVM for π/4-shift QPSK signal of 4.4% at 2.1GHz with power consumption of 15mW and size of 0.22×0.31mm2. For the confirmation of broad band operation, the characteristics of conversion gain and noise figure were measured at 5.2GHz. The proposed mixer could operate at 5.2GHz with enough conversion gain, but the noise figure was inferior to that of 2.1GHz. Therefore the further investigation and improvement about the noise figure will be needed for higher frequency.
- 2009-12-01
著者
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SUEMATSU Noriharu
Kamakura Works, Mitsubishi Electric Corporation
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SHIMOZAWA Mitsuhiro
Information Technology R&D Center, Mitsubishi Electric Corporation
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Taniguchi Eiji
Communication System Center Mitsubishi Electric Corporation
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Taniguchi Eiji
Information Technology R&d Center Mitsubishi Electric Corporation
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Taniguchi Eiji
Laboratory Of Pesticide Chemistry Division Of Bioresource And Bioenvironmental Sciences Graduate Sch
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Suematsu Noriharu
Kamakura Works Mitsubishi Electric Corporation
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Suematsu Noriharu
Information Technology R & D Center Mitsubishi Electric Corporation
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Suematsu Noriharu
Information Technology R Amp D Center Electro-optics Amp Microwave System Laboratory Mitsubishi Elec
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Shimozawa Mitsuhiro
Information Technology R&d Center Mitsubishi Electric Corporation
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