Extension Of The Current Continuous Frequency Tuning Range Of GaAlAs Laser Diodes By The External Cavity

2021 ◽

pp. 1-7

Author(s):

Titus Oyedokun ◽

Riana H. Geschke ◽

Tinus Stander

Keyword(s):

Printed Circuit Board ◽

Tuning Range ◽

Frequency Tuning ◽

Resonant Cavity ◽

Circuit Board ◽

Resonant Cavities ◽

Tunable Resonators ◽

Simulation Strategy ◽

Dc Bias ◽

Continuous Frequency

Abstract We present a tunable planar groove gap waveguide (PGGWG) resonant cavity at Ka-band. The cavity demonstrates varactor loading and biasing without bridging wires or annular rings, as commonly is required in conventional substrate-integrated waveguide (SIW) resonant cavities. A detailed co-simulation strategy is also presented, with indicative parametric tuning data. Measured results indicate a 4.48% continuous frequency tuning range of 32.52–33.98 GHz and a Qu tuning range of 63–85, corresponding to the DC bias voltages of 0–16 V. Discrepancies between simulated and measured results are analyzed, and traced to process variation in the multi-layer printed circuit board stack, as well as unaccounted varactor parasitics and surface roughness.

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A THz-Wave Generator Based on MEMS Technology

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.74.59 ◽

2009 ◽

Vol 74 ◽

pp. 59-62 ◽

Cited By ~ 1

Author(s):

Ji Fang Tao ◽

Wei Ming Zhu ◽

Hong Cai ◽

Jian Wu ◽

Kun Xu ◽

...

Keyword(s):

Tuning Range ◽

Laser Diodes ◽

External Cavity ◽

Carrier Effect ◽

Stability Performance ◽

Optical Generation ◽

Fabry Perot ◽

Wave Generator ◽

Mems Technology ◽

Heating Up

This paper reports a new kind Terahertz generator using tunable dual-wavelength generator based on MEMS technology, which are developed based on free-carrier effect (FCE) and thermo-optic effect (TOE) [1-3]. The approach provides a wide tuning range from 0 to 15 nm by adjusting the current of laser diodes and heating up common silicon Fabry-Perot (FP) external cavity. Compared to the conventional optical generation methods, this method has fast tuning speed (<1 ms), small size (2.2 mm 0.8 mm), high integration and quite stability performance.

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Microstrip Switchable and Fully Tunable Bandpass Filter With Continuous Frequency Tuning Range

IEEE Microwave and Wireless Components Letters ◽

10.1109/lmwc.2018.2831440 ◽

2018 ◽

Vol 28 (6) ◽

pp. 500-502 ◽

Cited By ~ 21

Author(s):

Chi-Feng Chen ◽

Guo-Yun Wang ◽

Jhong-Jhen Li

Keyword(s):

Tuning Range ◽

Bandpass Filter ◽

Frequency Tuning ◽

Continuous Frequency ◽

Tunable Bandpass Filter

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A wideband Colpitts VCO with 30% continuous frequency tuning range using a tunable phase shifter

2010 IEEE International Conference of Electron Devices and Solid-State Circuits (EDSSC) ◽

10.1109/edssc.2010.5713763 ◽

2010 ◽

Cited By ~ 1

Author(s):

Ying Chen ◽

K Mouthaan ◽

M Geurts

Keyword(s):

Phase Shifter ◽

Tuning Range ◽

Frequency Tuning ◽

Continuous Frequency

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A Tunable Wideband Frequency Synthesizer Using LC-VCO and Mixer for Reconfigurable Radio Transceivers

Journal of Electrical and Computer Engineering ◽

10.1155/2011/361910 ◽

2011 ◽

Vol 2011 ◽

pp. 1-7 ◽

Cited By ~ 2

Author(s):

Yusaku Ito ◽

Kenichi Okada ◽

Kazuya Masu

Keyword(s):

Tuning Range ◽

Frequency Synthesizer ◽

Frequency Tuning ◽

Cmos Process ◽

Voltage Controlled Oscillator ◽

Chip Area ◽

Variable Gain ◽

Continuous Frequency ◽

Reconfigurable Radio ◽

Lc Vco

This paper proposes a novel wideband LC-based voltage-controlled oscillator (VCO) for multistandard transceivers. The proposed VCO has a core LC-VCO and a tuning-range extension circuit, which consists of switches, a mixer, dividers, and variable gain combiners with a spurious rejection technique. The experimental results exhibit 0.98 to 6.6 GHz continuous frequency tuning with −206 dBc/Hz of FoMT, which is fabricated by using a 0.18 μm CMOS process. The frequency tuning range (FTR) is 149%, and the chip area is 800 μm × 540 μm.

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