A modified Chebyshev bandpass filter with attenuation poles in the stopband

Lim, Jeong-Soo; Park, Dong Chul

doi:10.1109/22.588597

Cited by 47 publications

(1 citation statement)

References 4 publications

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“…Such form implies that f (s) can be either an odd function or an even function. The presence of finite zeros, such as in the modified Chebyshev design [20], often increases the number of elements and complicated synthesis [21]. Therefore, it is preferable for f (s) to be in the s k form.…”

Section: Simplified Real Frequency Technique (Srft)mentioning

confidence: 99%

Design of Impedance Matching Network for Low-Power, Ultra-Wideband Applications

Hassani,

Chen,

Nikolova

2024

JLPEA

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This paper addresses the design of ultra-wideband (UWB) impedance matching networks operating in the unlicensed 3.1–10.6 GHz frequency band for low-power applications. It improves the simplified real frequency technique (SRFT) by adding a realizability check and employing an iterative approach with different initial guesses in optimization to achieve realizable solutions under the requirements of UWB, low-power consumption, and a minimum number of circuit components. The comparison of solutions obtained using the SRFT with published solutions based on the Chebyshev filter theory is presented. It is shown that the optimal SRFT solution requires fewer components in the impedance matching network, maximizes the RF power delivery over the UWB spectrum with a reflection coefficient below −10 dB, and allows for circuit optimization to reduce power consumption. Using the improved SRFT, it demonstrates a systematic approach to find the strategies and limitations of designing the input matching networks for low-power UWB applications using GlobalFoundries 90 nm BiCMOS technology.

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Section: Simplified Real Frequency Technique (Srft)mentioning

confidence: 99%

Design of Impedance Matching Network for Low-Power, Ultra-Wideband Applications

Hassani,

Chen,

Nikolova

2024

JLPEA

View full text Add to dashboard Cite

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Pseudoelliptic bandpass filter realization using attenuation pole resonator

Huang

Tsai

1999

Microw. Opt. Technol. Lett.

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A bandpass filter composed of a conventional combline filter and an attenuation pole resonator (APR) is investigated. The transmission zero of the combline filter combines with the attenuation pole of the resonator to perform the pseudoelliptic function filter response. Without any additional lump element or cross coupling, the filter demonstrates sharp roll‐off response over the passband edges. Compact size has also been accomplished due to the simple structure. The measured frequency response agrees well with the simulation results. It shows good performance capability for the application of wireless communication. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 23: 275–277, 1999.

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Fabrication of monoblock ceramic bandpass filters with attenuation poles

Weng

Liang

2002

Micro & Optical Tech Letters

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Ž . Figure 2 Conversion gain of modified top, QUBMIX8 and un-Ž . modified mixer bottom, QUBMIX6 versus IF frequency Figure 3 MMIC mixer photographs the gate bias was V s y0.8 V, the drain bias was V s g d3.5 V, the LO power was LO s 11 dBm, and the LO frequency was 64 GHz. The differences seen between measurement and simulation are due to uncertainties in determining the absolute values of the peak transconductance G . m CONCLUSIONSA new expression for the influence of the via hole inductance on mixer performance has been presented and validated by numerical simulation and by measurement. Theoretical considerations suggest that the conversion gain may be de-creased by as much as 9 dB due to the effects of the via hole inductance. A method for counteracting this effect is introduced which, instead of reducing the wafer thickness, eliminates the reactance of the via hole by resonating it with open-circuit stubs. This is confirmed by measurement, which shows an improvement in conversion gain of 3.5 dB. ACKNOWLEDGMENT Ž . Thanks go to Derek Smith of OMMIC PML for access to the ED02AH foundry. Analysis of the source inductance effect on the power performance of high development HEMT's in Ka-band, IEEE Mi-Ž . crowave Guided Wave Lett 5 1995 , 243᎐245. 4. R. Allam, C. Kolanowski, J.M. Paillot, C. Duvanaud, and Y. Crosnier, Influence of the source inductance parasitic effect on the conversion gain of an HEMT gate mixer, Microwave Opt Ž . ABSTRACT: Small size and rapid attenuation rate are two important factors in the selection of bandpass filters for practical applications. This paper describes a monoblock and modified Chebyshe¨-type bandpass filter with an attenuation pole in the lower stopband. The equi¨alent circuit consists of resonators, and series capacitance is presented to predict the filter performance. The series capacitance is made directly by an appropriate choice of the electrode pattern. Since no additional lumped element is needed, the designed filter shows a simple structure. Also, a compact monoblock bandpass filter using high-permitti¨ity ce-( ) ramics of Ba,Sr O᎐Sm O ᎐4.7TiO is fabricated. Experimental results 2 3 2 of the fabricated filter measured by an HP8510B network analyzer¨erify the expected effect. ᮊ

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A modified Chebyshev bandpass filter with attenuation poles in the stopband

Cited by 47 publications

References 4 publications

Design of Impedance Matching Network for Low-Power, Ultra-Wideband Applications

Design of Impedance Matching Network for Low-Power, Ultra-Wideband Applications

Pseudoelliptic bandpass filter realization using attenuation pole resonator

Fabrication of monoblock ceramic bandpass filters with attenuation poles

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