A design of S-band monolithic integrated switched filter bank

Yang, Xiaodong; Ming, Xing; Wang, Erfan; Zhang, Lei; Li, Nan; Qian, Zhouqiang

doi:10.1109/icept.2017.8046433

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…To address the above challenging issues, researchers focus on exploring different fabrication processes to improve the integration and compactness, including multilayer printed circuit board (PCB) [3][4][5], low temperature cofired ceramic (LTCC) [6,7], silicon wafer [8][9][10][11], and other materials [12]. Multilayer PCB is often considered a low-cost technology, but it still suffers from the low integration density of electronic systems and low isolation.…”

Section: Introductionmentioning

confidence: 99%

3D Heterogenous Integrated Wideband Switchable Bandpass Filter Bank for Millimeter Wave Applications

Wang

Shu

et al. 2022

Electronics

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This article proposes a three-dimensional heterogenous-integrated (3DHI) switchable bandpass filter bank with two independent wideband filter channels that cover 26–40 GHz and 32.5–40 GHz, respectively. An accurate wafer-level process with a high hollowed ratio of the applied 8-inch high-resistivity-silicon (HR-Si) interposer wafers is presented to form both compact filter channels. Above the interdigital filter patterns fabricated on the bottom interposer wafer, deep cavities are etched in the cap interposer wafer to improve the quality factor of the filter bank. Besides the cavities, the cap interposer wafer is 35% hollow inside, which two bare dies of GaAs single-pole double-throw (SPDT) switches and two thin film resistors are attached to the bottom interposer after the wafer-to-wafer (W2W) bonding. To ensure good out-of-band performance, a 3D EM co-simulation of the switch layout at the chip level and filter patterns at the package level is applied. Measurement results show that the switchable filter bank achieves a high isolation of 50 dB and a competitive shape factor (BW30dB/BW3dB) of about 1.3. In addition, the size of the switchable filter bank is only 7.0 mm × 3.5 mm × 0.6 mm, and the weight is only 0.1 g.

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Section: Introductionmentioning

confidence: 99%

3D Heterogenous Integrated Wideband Switchable Bandpass Filter Bank for Millimeter Wave Applications

Wang

Shu

et al. 2022

Electronics

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“…On the other hand, especially in a MIMO system, it is often hard for a single filter unit to meet the complex filtering requirements of wireless communication system, filters are needed to be combined as a filter bank to process radio frequency signals. In [5–7 ], different types of filters constituted a switchable filter bank which ensures only a single channel at one time. Instead of arranging filter units in‐plane, Billstrom and Sandwall [8 ] presented a novel method for the miniaturisation of a filter bank by 3D‐stacking of filters.…”

Section: Introductionmentioning

confidence: 99%

Miniaturised multi‐channel millimetre wave filter bank

Wang

Jiang

2020

Electron. lett.

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This Letter presents a miniaturised multi‐channel millimetre‐wave filter bank implemented by stripline and substrate integrated waveguide (SIW). Since the orthogonal transverse electric mode and transverse electromagnetic mode can coexist in the same hybrid structure cavity and be transmitted almost without mutual interference, embedding stripline into SIW to miniaturise the size of the filter bank is achievable. A prototype composed of four bandpass filter units working at X‐band is designed, fabricated and tested. Measurement results show that the proposed device has four independent channels with a good quality of bandpass filtering and the isolation among ports of different filter units are relatively high. The proposed prototype has 39.5% volume reduction than traditional stacking structure as well as good scalability, which has broad prospects in the application of next‐generation wireless communication system.

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A design of S-band monolithic integrated switched filter bank

Cited by 2 publications

References 5 publications

3D Heterogenous Integrated Wideband Switchable Bandpass Filter Bank for Millimeter Wave Applications

3D Heterogenous Integrated Wideband Switchable Bandpass Filter Bank for Millimeter Wave Applications

Miniaturised multi‐channel millimetre wave filter bank

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