Results 221 to 230 of about 4,412,465 (239)
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An I/Q active balanced harmonic mixer with IM2 cancelers and a 45° phase shifter
1998 IEEE International Solid-State Circuits Conference. Digest of Technical Papers, ISSCC. First Edition (Cat. No.98CH36156), 1998To reduce DC offset caused by local-oscillator-signal self-mixing in a direct-conversion receiver, an active balanced harmonic mixer with second-order intermodulation (IM2) canceler was proposed, and a direct downconverter containing the mixer and a 45/spl deg/ phase shifter was fabricated on a BiCMOS chip.
Takafumi Yamaji +2 more
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3 bit balanced digital phase shifter using switch mode topology
2016 International Conference on Automatic Control and Dynamic Optimization Techniques (ICACDOT), 20163 bit balanced digital phase shifter is designed for 2.6 GHz to 2.9 GHz band. This circuit is based on switched network topology which is a active design and has number of network configuration. In the proposed designed high pass and low pass topology has been used. It gives both positive and negative phases according to control input applied. Low pass
Arati Arun Bhonkar, Udaysinh Sutar
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Balanced detection for spectral-domain optical coherence tomography with fiber-based phase shifter
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVIII, 2018We present a balanced detection method for spectral domain optical coherence tomography (SD-OCT) using a fiberoptic phase shifter. SD-OCT systems typically use a single line scan camera to detect the spectrogram, and noninterfered signals are not excluded from the recorded signal. That limits dynamic range and reduces image quality.
Hye J. Ma +3 more
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2019 IEEE Asia-Pacific Microwave Conference (APMC), 2019
This paper proposes the generalized topology and synthesis design method for the wideband balanced phase shifters with common-mode (CM) suppression. By utilizing of the open-and short-circuited stub-loaded T-shaped structure, high CM rejection and good differential-mode (DM) filtering property can be simultaneously achieved.
Lei-Lei Qiu, Lei Zhu, Yun-Peng Lyu
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This paper proposes the generalized topology and synthesis design method for the wideband balanced phase shifters with common-mode (CM) suppression. By utilizing of the open-and short-circuited stub-loaded T-shaped structure, high CM rejection and good differential-mode (DM) filtering property can be simultaneously achieved.
Lei-Lei Qiu, Lei Zhu, Yun-Peng Lyu
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Optik, 2019
Abstract We propose a phase noise suppression scheme for RF signal remote fiber transmission based on a photonic phase shifter. Phase noise induced by the temperature variation and mechanical perturbation is suppressed automatically and effectively through a feedback network.
Wensheng Zhai +4 more
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Abstract We propose a phase noise suppression scheme for RF signal remote fiber transmission based on a photonic phase shifter. Phase noise induced by the temperature variation and mechanical perturbation is suppressed automatically and effectively through a feedback network.
Wensheng Zhai +4 more
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IEEE Transactions on Antennas and Propagation, 2005
We propose an S-band active phased array antenna (APAA) with analog phase shifters (PSs) that use double-balanced mixers (DBMs). The quadrature phase shift keying modulator integrated circuits (ICs) used as the phase shifters can control both the amplitude and phase of the input signal continuously and independently by using the control voltages.
A. Miura +6 more
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We propose an S-band active phased array antenna (APAA) with analog phase shifters (PSs) that use double-balanced mixers (DBMs). The quadrature phase shift keying modulator integrated circuits (ICs) used as the phase shifters can control both the amplitude and phase of the input signal continuously and independently by using the control voltages.
A. Miura +6 more
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360° Tunable Balanced Filtering Phase Shifter With Reflectionless and Wide Stopband Characteristics
International Journal of Circuit Theory and ApplicationsABSTRACT A tunable balanced filtering phase shifter with reflectionless and wide stopband characteristics is presented in this paper. The proposed circuit consists of a six‐port balanced‐to‐unbalanced (BTU) quadrature coupler, two identical varactor‐tuned reflective loads, and two absorptive filtering networks.
Tong Zhao +3 more
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1998 IEEE MTT-S International Microwave Symposium Digest (Cat. No.98CH36192), 2002
This paper proposes a novel circuit configuration of an even harmonic quadrature mixer (EHQMIX) for direct conversion receivers. In this EHQMIX, a 90 degree phase shifter consists of balance type high pass and low pass filters, and it does not require any circuits connecting to the ground plane. So this configuration is suitable for low cost monolithic
M. Shimozawa +6 more
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This paper proposes a novel circuit configuration of an even harmonic quadrature mixer (EHQMIX) for direct conversion receivers. In this EHQMIX, a 90 degree phase shifter consists of balance type high pass and low pass filters, and it does not require any circuits connecting to the ground plane. So this configuration is suitable for low cost monolithic
M. Shimozawa +6 more
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Optics Letters
The cross talk and power consumption of the 2 × 2 optical switch is a key metric in the design of large-scale photonic integrated circuits (PICs). We build a theoretical model of a 2 × 2 Mach–Zehnder interferometer (MZI) optical switch, taking into account both imbalances in the arm loss and the coupler splitting ratio.
Tongxin Yang +5 more
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The cross talk and power consumption of the 2 × 2 optical switch is a key metric in the design of large-scale photonic integrated circuits (PICs). We build a theoretical model of a 2 × 2 Mach–Zehnder interferometer (MZI) optical switch, taking into account both imbalances in the arm loss and the coupler splitting ratio.
Tongxin Yang +5 more
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Balanced Microstrip Filtering Phase Shifter Using Three-end Folded Coupled Lines
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM), 2021Yi Nie, Wei Zhang, Jin Shi
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