Design of combline and interdigital filters with tapped-line input

Caspi, S.; Adelman, J.

doi:10.1109/22.3583

Cited by 96 publications

(57 citation statements)

References 2 publications

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“…Combline filters are popular choice due to their good performances and a relative compact size. To further reduce the size a novel design based on a meander line configuration is used here [19]. Combline filter structures are constructed from mutual coupled resonators, here three resonators are used.…”

Section: A Embedded Combline Filtermentioning

confidence: 99%

Implementation of Packaged Integrated Antenna With Embedded Front End for Bluetooth Applications

Rotaru

Lim

Kuruveettil

et al. 2008

IEEE Trans. Adv. Packag.

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Abstract-The design, integration and realization of system in enhanced package approach towards fully functional system level integration by using a compact Bluetooth USB dongle as the demonstrator is presented here. The integration was done on FR4 substrates, which is totally compatible with today's printed circuit board manufacturing capability. A commercially available Bluetooth integrated chip was chosen as the chipset of our demonstrator, and a package integrated antenna together with an embedded front end completes the system in package integration. The front end developed here is based on an embedded meander line combline filter and an embedded transformer balun. The filter has a 35% area reduction when compared with the classical combline filter and similar performance. The balun has the coils distributed on three layers that minimized the board area needed it and optimizes the performances. The proposed packaged integrated antenna approach is successfully demonstrated here and the new module shows excellent performance when compared with a commercial solution, surpassing the normal Bluetooth class II dongle range which is up to 10 m and increasing the module range up to 120 m without an extra power amplifier.Index Terms-Dielectric resonator antenna (DRA), embedded front end, embedded passives, package integrated antenna, system in package (SiP), wireless module.

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Section: A Embedded Combline Filtermentioning

confidence: 99%

Implementation of Packaged Integrated Antenna With Embedded Front End for Bluetooth Applications

Rotaru

Lim

Kuruveettil

et al. 2008

IEEE Trans. Adv. Packag.

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“…To demonstrate the feasibility of this concept, an 8-pole interdigital filter with center frequency 2.14 GHz and 152 MHz bandwidth is designed and manufactured. The input and output of the filter are realized using tapped-in lines [11,12]. The detailed dimensions are shown in Fig. 14.…”

Section: Filter Designmentioning

confidence: 99%

Stripline Transition to Ridge Waveguide Bandpass Filters

Sabbagh¹,

Hsu²,

Zaki³

et al. 2003

PIER

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Abstract-Full wave optimization is implemented to design a wide band transition from shielded stripline to ridge waveguide. A bandpass ridge waveguide filter, with input/output realized through tapped-in stripline is designed. Using rigorous mode matching technique the generalized scattering matrices of all the building blocks are obtained. Design procedure is described and examples are given to demonstrate the features of the tapped-in coupling structure. The tapped-in structure results in a considerable reduction of the filter's total length compared to the use of two transitions.

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“…2. The preliminary design of the frequency selective network was based on the tapped interdigital resonator filters [16]. The design of the resonator begins with the selection of the appropriate substrate which in this case was FR4.…”

Section: Preliminary Designmentioning

confidence: 99%

A Low Cost Rf Oscillator Incorporating a Folded Parallel Coupled Resonator

Butt¹,

Nadeem²,

Hasan³

2009

PIER C

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Abstract-In this paper, we present a low cost RF oscillator design incorporating a folded parallel coupled resonator. The oscillator is designed on FR4 substrate to achieve low cost. FR4 is a low cost substrate but has a poorly controlled dielectric constant and high loss tangent thereby challenging the design of higher performance circuits. This oscillator operates in 900 MHz band, delivers an output of −3.13 dBm and has phase noise 101.8 dBc/Hz at 10 kHz offset. The size of the folded parallel coupled resonator is 16% smaller than the conventional parallel coupled resonator, thereby making the overall circuit more compact. The power output and phase noise results are better than the oscillator designed with conventional resonator. Open loop analysis method has been adopted for the oscillator design and analysis. The measured data shows good agreement with the simulated results. The performance parameters of this oscillator make it suitable for use in low cost wireless communication solutions in 900 MHz band.

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Design of combline and interdigital filters with tapped-line input

Cited by 96 publications

References 2 publications

Implementation of Packaged Integrated Antenna With Embedded Front End for Bluetooth Applications

Implementation of Packaged Integrated Antenna With Embedded Front End for Bluetooth Applications

Stripline Transition to Ridge Waveguide Bandpass Filters

A Low Cost Rf Oscillator Incorporating a Folded Parallel Coupled Resonator

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