Considerations of Dielectric Property Deviation and Mechanical Limitations for Antenna-in-Package Fabrication by SiP-Based Stacked Organic Dielectric Substrates at Millimeter-Wave Frequencies

Chou, Hsi‐Tseng; Lin, Zhao-He; Lin, Ding‐Bing; Yang, Chao‐Shun; Shen, Pin-Zhong; Pan, Chi-Liang

doi:10.1109/tap.2021.3111340

Cited by 9 publications

(2 citation statements)

References 47 publications

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“…The additional losses caused by metal surface roughness of the feeding network are difficult to be justified in the simulation. This may be the main reason that the measured S11 has a lower level and a larger bandwidth than the simulated results [30]- [31]. The simulated and measured bandwidths (-10 dB) of the antenna are 18.9% (125.3-151.5 GHz) and 22.2% (124-155 GHz) respectively.…”

Section: B S-parametersmentioning

confidence: 78%

Broadband D-Band Patch Antenna Array in Wafer-Level Package Based on BCB Process

Wang

Xiao

Yang

et al. 2022

IEEE Open J. Antennas Propag.

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This paper presents a broadband stacked patch antenna array in wafer-level package based on benzocyclobutene (BCB) process for D-band wireless communications. The BCB material is not only used as a substrate for the antenna, but also as an interconnection layer, enabling low-loss interconnection with RFICs through vias and transmission lines. By introducing a BCB polymer-filled back cavity and carefully developing the feeding network, the designed antenna achieves a relative bandwidth of 18.9%. In addition, the 2×2 stacked antenna array features a stable high-gain broadside radiation pattern. The pairwise antiphase feeding technique is adopted to suppress the cross-polarization level. In order to acquire high-speed data transmission, a dual-polarization MIMO implementation is presented. The port isolations are greater than 35 dB across the whole operating band. INDEX TERMSAntenna in wafer-level package, BCB process, D-band, patch antenna array, broadband performance.

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Section: B S-parametersmentioning

confidence: 78%

Broadband D-Band Patch Antenna Array in Wafer-Level Package Based on BCB Process

Wang

Xiao

Yang

et al. 2022

IEEE Open J. Antennas Propag.

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show abstract

“…The mmWave enabled fifth generation (5 G) cellular networks are envisioned to provide ultra-low latency (<1 ms), ubiquitous connectivity and massive system capacity (100x >4 G) [2], [3]. Besides 5 G, applications of mmWaves also include highspeed indoor wireless communications (WiGig at 60 GHz), automotive radars (77 GHz), security systems and medical imaging [4], [5]. The wide spread use of mmWave technologies will induce into the environmental spectrum new types of radiations to which humans have never been exposed during evolution.…”

Section: Introductionmentioning

confidence: 99%

Millimeter-Wave Induced Heating of Cutaneous Nerves and Capillaries

et al. 2023

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In this study, we quantify microscale heating at the level of cutaneous nerves and capillaries due to continuous and pulsed plane-wave exposure at 60 GHz. The thermal properties of the nerves and capillaries were derived using mixture equations based on their water content. The electromagnetic problem was solved in conjunction with Pennes bioheat equation and Arrhenius equation using finite element method to evaluate the spatial and temporal evolution of temperature along with thermal damage within cutaneous nerves and capillaries. Although, the maximum power density within the nerve (41.6 kW/m 3 ) and capillary (20 kW/m 3 ) was 37.3% and 30.2% higher than surrounding skin for a continuous exposure at 10 W/m 2 , the peak temperature elevation ( T ) within the nerve (93.3 n°C) and capillary (90.7 n°C) occurred after 5 μs and 10 μs of exposure and was 19.2% and 17.7% higher than surrounding skin, respectively. The nerve and capillary attained thermal equilibrium with skin after roughly 10 ms. The maximal T within the nerve (0.5 °C) and capillary (0.25 °C) due to nano-and micro-second 60 GHz pulses with highest fluence (0.48 kJ/m 2 ) permitted under ICNIRP guidelines was 34% and 24% higher than in the surrounding skin. Ten 3 μs 60 GHz pulses (power density = 13.4 GW/m 2 ) separated by 10 s of cooling period were used to demonstrate the possibility of selective thermal ablation of cutaneous nerves [damage index (Ω)=1.1)] without damaging skin (Ω = 0.15). The results provide valuable insights into local millimeter-wave induced heating within various skin substructures.INDEX TERMS Finite element method, human skin, millimeter waves, thermal dosimetry.This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination.

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Low-temperature reliability enhancement of system-in-package with silicon-based resistors and its electrothermal analysis

Wang

Zhang

Xiao

2023

Microelectronics Reliability

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Considerations of Dielectric Property Deviation and Mechanical Limitations for Antenna-in-Package Fabrication by SiP-Based Stacked Organic Dielectric Substrates at Millimeter-Wave Frequencies

Cited by 9 publications

References 47 publications

Broadband D-Band Patch Antenna Array in Wafer-Level Package Based on BCB Process

Broadband D-Band Patch Antenna Array in Wafer-Level Package Based on BCB Process

Millimeter-Wave Induced Heating of Cutaneous Nerves and Capillaries

Low-temperature reliability enhancement of system-in-package with silicon-based resistors and its electrothermal analysis

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