A Simple Ultra-Wideband Suspended Stripline Bandpass Filter With Very Wide Stop-Band

Suspended stripline (SSL) provides a transmission line medium featuring many advantages, but due to the effective permittivity being close to unity, distributed elements are usually bulky. This letter introduces a novel SSL resonator, which is both compact and low loss. For that purpose, cuboid shaped bricks of metal are incorporated into the SSL channel in the vicinity of the open-circuited side of the resonator. Through this capacitive loading, the area occupied by the resonator can be reduced by a factor of about 5, yet maintaining a high quality factor. The feasibility of this new resonator type is demonstrated with an example bandpass filter at 670 MHz center frequency showing both compact size and low insertion loss.

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“…In [2], [12] the substrate is suspended by a groove. This work also uses a split block assembly for realizing the channel.…”

Section: Example Filtermentioning

confidence: 99%

A Novel Compact Suspended Stripline Resonator

Ruf

Menzel

2012

IEEE Microw. Wireless Compon. Lett.

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“…Recently, ultra-wideband band pass filters have been designed by using low-pass filters structures capacitively coupling to the I/O ports [8] , [9] . In [ lO] an ultra-wideband band pass filter has been introduced using a low pass filter structure where the frequencies lower than 3.1 GHz are attenuated using quarter wavelength stubs connected to the ground by via holes.…”

Section: Introductionmentioning

confidence: 99%

B7. UWB band pass filter with two band notches using T-shape resonators

Tantawy

Habash

Abdel‐Rahman

2015

2015 32nd National Radio Science Conference (NRSC)

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In this paper, an ultra-wideband (UWB) band pass filter (BPF) with dual rejection Bands based on two parallel T shaped resonator is proposed. The UWB band pass is realized by one pole high pass filter followed by a low pass filter. The lower cut off frequency is determined using a lumped coupling capacitor whereas, the higher cut off frequency is achieved by the low pass filter. The filter is suitable for wireless communication applications within the unlicensed UWB range set by the Federal Communications Commission (FCC). Such UWB band pass filter with notched bands is required in practical systems in order to avoid the interference between the UWB radio system and existing radio systems. The notched band can be easily adjusted to some specific frequency band(s) by tuning the parameters of the T shaped resonators. The proposed filter exhibits relative excellent ultra-wide bandwidth and notched bands performance compared with references. The measured results agree with the simulated ones.

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“…Various filter structures have been proposed in the literature. [1 ] ,Band -pass filter(BPF) is one of the most important components in microwave circuits. To meet the size requirement of modem microwave communications systems, compact microwave BPFs with low insertion loss and low cost are in high demand.…”

Section: Introductionmentioning

confidence: 99%