MEMS-based photonic bandgap (PBG) band-stop filter

Zhang, X.J.; Liu, A.Q.; Karim, Muhammad Faeyz; Yu, Aibing; Shen, Zhongxiang

doi:10.1109/mwsym.2004.1338849

Cited by 13 publications

(8 citation statements)

References 7 publications

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“…Besides the tunable band-pass filter, tunable band-stop filter can also be realized using MEMS technology [18,19]. Fig.…”

Section: Tunable Band-stop Filtermentioning

confidence: 99%

RF MEMS Switches and Integrated Switching Circuits

Liu

2010

MEMS Reference Shelf

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Abstract-Radio frequency (RF) microelectromechanical systems (MEMS) have been pursued for more than a decade as a solution of high-performance on-chip fixed, tunable and reconfigurable circuits. This paper reviews our research work on RF MEMS switches and switching circuits in the past five years. The research work first concentrates on the development of lateral DC-contact switches and capacitive shunt switches. Low insertion loss, high isolation and wide frequency band have been achieved for the two types of switches; then the switches have been integrated with transmission lines to achieve different switching circuits, such as single-pole-multi-throw (SPMT) switching circuits, tunable band-pass filter, tunable band-stop filter and reconfigurable filter circuits. Substrate transfer process and surface planarization process are used to fabricate the above mentioned devices and circuits. The advantages of these two fabrication processes provide great flexibility in developing different types of RF MEMS switches and circuits. The ultimate target is to produce more powerful and sophisticated wireless appliances operating in handsets, base stations, and satellites with low power consumption and cost.

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“…Besides the tunable band-pass filter, tunable band-stop filter can also be realized using MEMS technology [18,19]. Fig.…”

Section: Tunable Band-stop Filtermentioning

confidence: 99%

RF MEMS Switches and Integrated Switching Circuits

Liu

2010

MEMS Reference Shelf

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“…EBG structures can be patterned on metal layers, such as the ground plane or the signal line of the microstrip [1] as well as of the coplanar waveguide (CPW) transmission line [2]. Comparing with microstrip lines, the CPW structures are more attractive because of the ease of characterization and fabrication, not forgetting promising applications in the devices of microwave integrated circuits (MICs), monolithic microwave integrated circuits (MMICs), and micro‐electromechanical systems (MEMS) [3]. EBG lattice can offer extremely flexibility to design the filters based on CPW transmission line.…”

Section: Introductionmentioning

confidence: 99%

A novel X‐band broadband bandstop filter with sharp cut‐off frequency using EBG dual‐ear structures

Huang

Zhu

Han

et al. 2011

Micro & Optical Tech Letters

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A novel X‐band broadband bandstop filter (BSF) with sharp cut off frequency is presented, using novel design of periodic electromagnetic bandgap (EBG) dual‐ear (DE) structures on coplanar waveguide (CPW) transmission line. An equivalent lumped circuit is introduced to model the BSF with EBG‐DE structures. The stopband of this filter is ranged within X‐band to have sharp selectivity and deep attenuation levels. The 3‐dB bandwidth of the BSF is 4.2 GHz, from 8.6 to 12.8 GHz and the center frequency is 11.5 GHz. The 20‐dB bandwidth is 2 GHz, from 9.9 to 11.9 GHz. In 20‐dB stop‐band range, the ripple of return loss is less than 0.05 dB.The proposal BSF is fabricated using the surface micromachining, and the measurement and simulation results coincided well. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26031

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“…However, SAW filters are limited in frequency (<3 GHz). A survey of the recent literature reveals that apart from the traditional active [2] and distributed RC passive [3] notch filters, novel tunable band-stop filter topologies using photonic [4] or electromagnetic band gap (EBG) structures [5], quarter wavelength open stubs, radial stubs or slotted ground structures [6][7][8], complementary split ring resonators (CSRR) utilising metamaterials [9], lumped LC circuits [10,11], multilayer ferromagnetic resonance [12] and bulk acoustic wave (BAW) resonators [13] are chosen as alternatives to address similar problems. In general, all of the above approaches are quite complex systems, requiring large silicon areas (>6 mm in length) and exhibiting moderate performances.…”

Section: Introductionmentioning

confidence: 99%