Wideband optical vector network analyzer based on polarization modulation

Wu, Kai; Wen, Jiajia; Shi, Zhun; Li, Ming; Chen, Wei; Zhu, Na; Li, Wei

doi:10.1016/j.optcom.2018.12.046

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…The use of this type of unidirectional biquad antenna can maximize 4G signal capture concentratedly from the direction of the 4G signal source originating from the nearest repeater and testing the performance and ability of the tool in improving the quality of 4G signal reception using direct observation, namely field testing. The test was carried out with the help of a vector network analyzer instrument to analyze the antenna efficiency by plotting data on the Smith chart [15][16][17]. The test results get valid data in the form of signal amplification parameters before and after the addition of the repeater booster device.…”

Section: Software Designmentioning

confidence: 99%

Implementation of an omnidirectional antenna on a 4G repeater with a working frequency of 1800 MHZ

Handayani¹,

Nasron

Arviando³

2021

tjst

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In this study, an omnidirectional antenna is used as a 4G signal amplifier with a frequency of 1800 Mhz. Omnidirectional antennas typically have a gain of about 3-12 dBi. The application of an omnidirectional antenna on a 4G signal amplifier repeater is used as a donor antenna facing the base transceiver station (BTS) source. Applying an omnidirectional antenna as a donor antenna will allow signal transmission from all directions to the BTS to be received from all directions. This antenna will serve or only emit signals in the vicinity of 360 degrees. While at the top of the antenna, there is no radiation signal. The voltage standing wave ratio (VSWR) test results with the MMANA test software get a reading of <1.5, with an impedance of 49 ohms and a gain of >6.5 dB. The radiation distribution pattern from the plotting results shows a circular spread of 360 degrees. This antenna is suitable for donor antennas that can receive signals from the BTS from all directions from the angle of incidence. From testing with an open signal application and comparing parameters before and after using a repeater, the download speed increased from 0.2 Mbps to 2.3 Mbps, and the latency increased from 159 ms to 73 ms. The scanning spectrum in auto mode gets a mid-frequency reading of 1867.20Mhz when the repeater is on. The results achieved in the service of this 4G signal booster tool are being able to understand 5th generation materials such as 5G technology. Several countries have started to study 5G technology by forming consortiums such as METIS, 5GNOW, and others.

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Section: Software Designmentioning

confidence: 99%

Implementation of an omnidirectional antenna on a 4G repeater with a working frequency of 1800 MHZ

Handayani¹,

Nasron

Arviando³

2021

tjst

View full text Add to dashboard Cite

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“…To simultaneously solve the problems described above, OVAs based on optical dual-sideband (ODSB) modulation were created [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. They have the following advantages: A doubled measurement frequency range up to 80 GHz with an element base based on lithium niobate (LiNbO 3 ), and an ultrahigh resolution of about 667 kHz, which depends on the quantity of control points of measurements of the electrical vector network analyzer, and which can be increased.…”

Section: Ova Based On Optical Double-sideband Modulationmentioning

confidence: 99%

“…In [23], a similar approach was proposed using a polarization modulator. The signal at the modulator output is a combination of a signal with intensity modulation and a signal with phase modulation.…”

Section: Ova Based On Symmetric Odsbmentioning

confidence: 99%

Ultrahigh-Resolution Optical Vector Analyzers

et al. 2020

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The optical vector analyzer is a device used to measure the magnitude, phase responses, and other parameters of optical devices. There have been increasingly higher demands placed on optical vector analyzers during the development of optical technologies, which are satisfied by the creation of new devices and their operating principles. For further development in this area, it is necessary to generalize the experience gained during the development of optical vector analyzers. Thus, in this report, we provide an overview of all the basic types of approaches used for the realization of optical vector analyzers, including the advanced ones with the best performances. The principles of their working, as well as their associated advantages, disadvantages, and existing solutions to the identified problems, are examined in detail. The presented approaches could be of value and interest to those working in the field of laser dynamics and optical devices, as we propose one use of the optical vector analyzer as being the characterization of Fano resonance structures.

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