Fully differential direct conversion receiver for W-CDMA using an active harmonic mixer

Yoshida, Hiroshi; Kato, T.; Toyoda, T.; Seto, I.; Fujimoto, Ryuichi; Kimura, Taiki; Watanabe, Osamu; Arai, Tadashi; Itakura, Tetsuro; Tsurumi, Hiroshi

doi:10.1109/rfic.2003.1213970

Cited by 11 publications

(16 citation statements)

References 3 publications

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“…As shown in the figure, gain control is applied in both the LNA and the variable gain amplifiers (VGAs). Here, an LNA with two gain modes is assumed [19]- [21]. This type of LNA has been discussed in [19] and [22].…”

Section: Automatic Gain Control and Differential Filtermentioning

confidence: 99%

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IQ imbalance compensation scheme in the presence of frequency offset and dynamic DC offset for a direct conversion receiver

Inamori

Bostamam

Sanada

et al. 2009

IEEE Trans. Wireless Commun.

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A direct conversion architecture reduces the cost and power consumption of a receiver. However, a direct conversion receiver may suffer from direct current (DC) offset, frequency offset, and IQ imbalance. This paper presents an IQ imbalance estimation scheme for orthogonal frequency division multiplexing (OFDM) direct conversion receivers. The proposed IQ imbalance estimation scheme operates in the presence of dynamic DC offset and frequency offset. The proposed scheme calculates IQ imbalance from a simple equation. It employs the knowledge of the preamble symbols of the IEEE 802.11 a/g standards, while it does not require the impulse response of the channel. Numerical results obtained through computer simulation show that the bit error rate (BER) performance for the proposed IQ imbalance estimation scheme has a degradation of about 4dB with a large DC offset, frequency offset, and IQ imbalance.

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Section: Automatic Gain Control and Differential Filtermentioning

confidence: 99%

“…Here, an LNA with two gain modes is assumed [19]- [21]. This type of LNA has been discussed in [19] and [22]. The VGAs at baseband compensate the rest of the required gain.…”

Section: Automatic Gain Control and Differential Filtermentioning

confidence: 99%

IQ imbalance compensation scheme in the presence of frequency offset and dynamic DC offset for a direct conversion receiver

Inamori

Bostamam

Sanada

et al. 2009

IEEE Trans. Wireless Commun.

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“…• A double-balanced mixer is adopted for a QDEM as an alternative architecture to the active harmonic mixer, which was introduced in the previous work [2]. The LO buffer employs capacitor degeneration in order to suppress the DC offset injection to the mixer, which causes local leakage, without an active DC offset canceler.…”

Section: Configuration Of the Proposed Receivermentioning

confidence: 99%

“…Therefore, a reduction in DC offset transition for the gain change is also required for mobile communication terminals. We have previously reported a fully differential direct conversion receiver, which reduced DC offset including time variation [2]. In [2], we reported that DC offset variation is sufficiently suppressed and causes negligible degradation in receiver performance.…”

Section: Introductionmentioning

confidence: 98%

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A low DC offset direct conversion receiver for W-CDMA with low current consumption

Yoshida

Toyoda

Arai

et al. 2005

IEICE Electron. Express

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Abstract:We present evaluation results for DC offset in the direct conversion receiver for W-CDMA with low current consumption. Measured results indicate that steady-state DC offset is suppressed to less than 30 mV and transitional variation in DC offset with gain change is limited to around 100 mV. The computer simulation revealed that negligible degradation in bit error rate (BER) performance due to the DC offset transition occurs with the proposed receiver.

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Limiting Factors in Self-Interference Cancellation

Le‐Ngoc

Masmoudi

2017

Full-Duplex Wireless Communications Systems

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Fully differential direct conversion receiver for W-CDMA using an active harmonic mixer

Cited by 11 publications

References 3 publications

IQ imbalance compensation scheme in the presence of frequency offset and dynamic DC offset for a direct conversion receiver

IQ imbalance compensation scheme in the presence of frequency offset and dynamic DC offset for a direct conversion receiver

A low DC offset direct conversion receiver for W-CDMA with low current consumption

Limiting Factors in Self-Interference Cancellation

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