Topic
Injection locking
About: Injection locking is a research topic. Over the lifetime, 4567 publications have been published within this topic receiving 60942 citations.
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Papers
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01 Jun 2014TL;DR: This paper presents a 60-GHz sub-harmonic injection-locked quadrature frequency synthesizer with subsampling operation that allows the proposed synthesizer to achieve relatively lower in-band phase noise through the use of sub-sampling operation, as well as good out-of-bandphase noise throughThe proposed synthesizers has been implemented in a standard 65-nm CMOS technology.
Abstract: This paper presents a 60-GHz sub-harmonic injection-locked quadrature frequency synthesizer with subsampling operation. This allows the proposed synthesizer to achieve relatively lower in-band phase noise through the use of sub-sampling operation, as well as good out-of-band phase noise through the use of sub-harmonic injection. The proposed synthesizer has been implemented in a standard 65-nm CMOS technology. It can support all 60-GHz channels and achieves a phase noise of -115dBc/Hz at 10MHz offset. The sub-sampling operation helps reducing an integrated jitter from 12ps to 2.1ps. It consumes 20.2mW and 14mW from a 20GHz sub-sampling phase-locked loop (SS-PLL) and a quadrature injection-locked oscillator (QILO), respectively.
33 citations
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TL;DR: In this article, an injection-locking technique with a 4458 Mbit/s RZ signal over a 170 km single-mode fiber was used to achieve transmission with a BER less than 10−11.
Abstract: Transmission with a BER less than 10−11 has been achieved using an injection-locking technique with a 4458 Mbit/s RZ signal over a 170 km single-mode fibre The injection-locking technique provides a single-longitudinal-mode optical source with a 35 dB main/side-mode power ratio and a 15 GHz spectral width
33 citations
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TL;DR: A digitally controlled delay circuit is proposed and implemented in a digital polar GSM/EDGE transmitter that makes the system less susceptible to injection pulling through automatic phase adjustment between the aggressor and the victim.
Abstract: A novel technique for mitigation of self interference in a highly integrated SoC transmitter is presented. The interference originates from the internal power amplifier (i.e., aggressor) that leads to injection pulling of the local RF oscillator (i.e., victim). The characteristic of injection pulling was found to be dependent on the AM signal applied to the power amplifier. A hypothesis describing the mechanism of injection pulling of the local oscillator is presented. A mathematical model is developed to study the characteristics of this self interference verified then by measurements. Based on this model, a digitally controlled delay circuit is proposed and implemented in a digital polar GSM/EDGE transmitter that makes the system less susceptible to injection pulling through automatic phase adjustment between the aggressor and the victim. Compliant EVM and spectrum performance is measured on SoC fabricated in 65-nm CMOS showing the effectiveness of the proposed solution.
33 citations
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05 Mar 2006TL;DR: In this article, the authors demonstrate record high resonance frequency (72 GHz) and record broadband performance (44 GHz) for 1.55-/spl mu/m DFB lasers under strong optical injection locking.
Abstract: We demonstrate record high resonance frequency (72 GHz) and record broadband performance (44 GHz) for 1.55-/spl mu/m direct-modulated distributed-feedback (DFB) lasers under strong optical injection locking. The frequency response above 50 GHz is measured directly using optical heterodyne detection.
33 citations
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TL;DR: A wideband-frequency tunable optoelectronic oscillator based on injection locking of the OEO to a tunable electronic oscillator without the need to use a narrowband filter is experimentally demonstrated.
Abstract: We experimentally demonstrate a wideband-frequency tunable optoelectronic oscillator (OEO) based on injection locking of the OEO to a tunable electronic oscillator. The OEO cavity does not contain a narrowband filter and its frequency can be tuned over a broad bandwidth of 1 GHz. The injection locking is based on minimizing the injected power by adjusting the frequency of one of the OEO cavity modes to be approximately equal to the frequency of the injected signal. The phase noise that is obtained in the injection-locked OEO is similar to that obtained in a long-cavity self-sustained OEO. Although the cavity length of the OEO was long, the spurious modes were suppressed due to the injection locking without the need to use a narrowband filter. The spurious level was significantly below that obtained in a self-sustained OEO after inserting a narrowband electronic filter with a Q-factor of 720 into the cavity.
33 citations