Measurement of the dielectric properties of Rogers R/flex 3850 liquid crystalline polymer substrate in V and W band

Smith, Stephanie; Dyadyuk, Val

doi:10.1109/aps.2005.1552844

Cited by 12 publications

(5 citation statements)

References 2 publications

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“…It was observed that TC-PPO- g -PB2 exhibits low D k and D f in the tested frequency range (10–110 GHz). Its D k value of TC-PPO- g -PB2 are superior to that of previously reported commercial LCP materials, which exhibited a D k of 3.16 over the similar frequency range, while D f of TC-PPO- g -PB2 is higher than 0.0049 observed in commercial LCP materials . Notably, upon examination of the dielectric properties of TC-PPO- g -PB2 around 10 GHz using SCR and BCDR methods, slight variations in D k and D f were observed.…”

Section: Resultsmentioning

confidence: 51%

“…Its D k value of TC-PPO-g-PB2 are superior to that of previously reported commercial LCP materials, which exhibited a D k of 3.16 over the similar frequency range, while D f of TC-PPO-g-PB2 is higher than 0.0049 observed in commercial LCP materials. 52 Notably, upon examination of the dielectric properties of TC-PPO-g-PB2 around 10 GHz using SCR and BCDR methods, slight variations in D k and D f were observed. This disparity can be inferred from the fact that SCR evaluates the in-plane component of the sample dielectric property, whereas BCDR measures the dielectric property perpendicular to the sample.…”

Section: Dielectric Properties Of Ppo-g-pb Filmsmentioning

confidence: 99%

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Graft Architectured Poly(phenylene oxide)-Based Flexible Films with Superior Dielectric Properties for High-Frequency Communication Above 100 GHz

Kim,

Park,

Yoo

et al. 2024

ACS Appl. Polym. Mater.

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The surge of fifth-generation communication has intensified the demand for advanced dielectric layers in flexible copper-clad laminates (FCCL). These layers must ensure a low dielectric constant (D k) and dielectric loss (D f) at high frequencies while meeting essential criteria, including thermal and chemical stability, flexibility, and low water uptake to achieve signal transmission efficiency and FCCL reliability. Herein, we have developed flexible dielectric layers based on poly(phenylene oxide)-g-poly(butadiene) (PPO-g-PB) that exhibit low D k and Df values at high-frequency regimes. Two PPO-g-PB samples with different PB graft densities were synthesized to explore the effect of PB side chains on the thermophysical properties of the resulting PPO-g-PB film. The as-synthesized PPO-g-PB demonstrated excellent film-forming ability, allowing for straightforward fabrication through a simple casting process followed by thermal curing. To determine the potential of these dielectric polymers in high-frequency communication applications, dielectric properties of thermally cured PPO-g-PB (TC-PPO-g-PB) were investigated at high-frequency regimes (from 10 to 110 GHz). Furthermore, we also monitored the water uptake behavior and changes in dielectric properties during an 85 °C and 85% relative humidity reliability test to demonstrate the practical application of these dielectric polymers as advanced dielectric materials.

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Section: Resultsmentioning

confidence: 51%

Section: Dielectric Properties Of Ppo-g-pb Filmsmentioning

confidence: 99%

Graft Architectured Poly(phenylene oxide)-Based Flexible Films with Superior Dielectric Properties for High-Frequency Communication Above 100 GHz

Kim,

Park,

Yoo

et al. 2024

ACS Appl. Polym. Mater.

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show abstract

“…23(a). After comparing the S 21 between measurement and simulation results, the extracted loss tangent is 0.053, as compared to 0.0067 at 98.5 GHz [40]. Fig.…”

Section: Measurement Results and Discussionmentioning

confidence: 99%

High-Efficiency Micromachined Sub-THz Channels for Low-Cost Interconnect for Planar Integrated Circuits

Wang

et al. 2016

IEEE Trans. Microwave Theory Techn.

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Abstract-This paper presents for the first time the design, fabrication, and demonstration of micromachined silicon dielectric waveguide based sub-THz interconnect channel for high efficiency, low cost sub-THz interconnect, aiming to solve the longstanding intra-/inter-chip interconnect problem. Careful studies of the loss mechanisms in the proposed sub-THz interconnect channel are carried out to optimize the design. Both theoretical and experimental results are provided with good agreement. To guide the channel design, a new Figure-of-Merit is also defined. The insertion loss of this first prototype with a 6-mm long interconnect channel is about 8.4 dB at 209.7 GHz, with a 3-dB bandwidth of 12.6 GHz.

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“…The PCB is gold plated afterwards to be able to apply wire-bonding. In [32], [33] the electrical properties of LCP substrate is measured and estimated, with a dielectric constant of 3.2 and a loss tangent of around 0.005 at 80 GHz. We have used these values in the modeling and all simulations.…”

Section: Antenna Designmentioning

confidence: 99%

Compact Integrated Full-Duplex Gap Waveguide-Based Radio Front End For Multi-Gbit/s Point-to-Point Backhaul Links at E-Band

Vosoogh

Sorkherizi

Vassilev

et al. 2019

IEEE Trans. Microwave Theory Techn.

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This paper presents the design and realization of a high data rate radio front-end module for point-to-point backhaul links at E-band. The design module consists of four vertically stacked unconnected metal layers without any galvanic and electrical contact requirements among the building blocks, by using gap waveguide technology. The module components are a high gain array antenna, diplexer, and circuitry consisting of a transmitter (Tx) and a receiver (Rx) monolithic microwave integrated circuits (MMICs) on a carrier board, which are successfully integrated in one package with a novel architecture and a compact form. The diplexer consists of two direct-coupled cavity bandpass filters with channels at 71-76 GHz and 81-86 GHz with a measured return loss of 15 dB and an isolation greater than 50 dB. A wideband 16×16 slot array antenna with a measured gain of more than 31 dBi is used to provide high directivity. The measured results show that the packaged transmitter provides a conversion gain of 22 dB and 20 dB at 76 GHz and 86 GHz, respectively, with an output power of 14 dBm and 16 dBm at 1-dB gain compression point, at the same frequencies. The packaged receiver shows an average conversion gain of 20 dB at 71-76 GHz and 24 dB at 81-86 GHz bands. A real-time wireless data transmission is successfully demonstrated with a data rate of 8 Gbit/s using 32 quadrature amplitude modulated signal over 1.8 GHz channel bandwidth with spectral efficiency of 4.44 bit/s/Hz. The proposed radio front-end provides the advantages of low loss, high efficiency, compact integration, and a simple mechanical assembly, which makes it a suitable solution for small cell backhaul links.

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Measurement of the dielectric properties of Rogers R/flex 3850 liquid crystalline polymer substrate in V and W band

Cited by 12 publications

References 2 publications

Graft Architectured Poly(phenylene oxide)-Based Flexible Films with Superior Dielectric Properties for High-Frequency Communication Above 100 GHz

Graft Architectured Poly(phenylene oxide)-Based Flexible Films with Superior Dielectric Properties for High-Frequency Communication Above 100 GHz

High-Efficiency Micromachined Sub-THz Channels for Low-Cost Interconnect for Planar Integrated Circuits

Compact Integrated Full-Duplex Gap Waveguide-Based Radio Front End For Multi-Gbit/s Point-to-Point Backhaul Links at E-Band

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