Design of compact microstrip diplexer with high selectivity

Velidi, Vamsi Krishna; Prabhakaran, U.; Subramanyam, A. V. G.; Sivareddy, D.; Srinivasan, V. V.

doi:10.1109/spcom.2012.6290012

Cited by 8 publications

(5 citation statements)

References 9 publications

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“…ones, however diplexers with such configurations occupy a considerable footprint [16]. The coupled-junction is proposed to achieve high performances, not only to reduce the diplexer size but also to obtain better insertion loss and rejection performances [17].…”

Section: Study Of the H-shaped Resonatormentioning

confidence: 99%

A Novel Design of an H-shaped Microstrip Diplexer

Chinig

Bennis

2017

J. Microw. Optoelectron. Electromagn. Appl.

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Section: Study Of the H-shaped Resonatormentioning

confidence: 99%

A Novel Design of an H-shaped Microstrip Diplexer

Chinig

Bennis

2017

J. Microw. Optoelectron. Electromagn. Appl.

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“…e realized microstrip filter prototype with small circuit size can be achieved by this technique. e technique for size reduction and high isolation signal by using a dual-mode resonator filter and diplexer is presented in [14,15]. In this paper, an ease of four-port dual-mode diplexer with high signal isolation is presented.…”

Section: Introductionmentioning

confidence: 99%

Four-Port Dual-Mode Diplexer with High Signal Isolation

Konpang

Wattikornsirikul

2020

Active and Passive Electronic Components

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An ease of four-port dual-mode diplexer with high signal isolation is presented. A compact dual-mode diplexer with high signal isolation between the Rx and Tx modules is achievable by only using one resonator filter topology. Two back-to-back dual-mode diplexers have a 180° phase shift in one branch. The high isolation can be achieved by amplitude and phase cancellation technique. The delayed transmission line can be easily achieved by the phase shifter. The simulated and measured four-port dual-mode diplexers are designed at the centre frequency of Rx/Tx at 1.95 GHz and 2.14 GHz, respectively. The measured results of Rx/Tx dual-mode diplexer devices are presented with 47.1 dB Rx/Tx isolation. This four-port dual-mode diplexer achieves the isolation (S32) of more than 24.1 dB when compared with the conventional three-port dual-mode diplexer structure.

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“…As a essential component of RF front end, the diplexer has been widely applied in modern high quality wireless communication systems, including CDMA, WLAN and LTE [1]- [4]. The most common approach to realize a diplexer is to combine two bandpass filters (BPFs) through an impedance-matching junction with two branches [5]- [8]. In [5], a diplexer is constructed by connecting two BPFs via a Y-junction to achieve high selectivity.…”

Section: Introductionmentioning

confidence: 99%

“…The most common approach to realize a diplexer is to combine two bandpass filters (BPFs) through an impedance-matching junction with two branches [5]- [8]. In [5], a diplexer is constructed by connecting two BPFs via a Y-junction to achieve high selectivity. In [6], compact hybrid resonators are used to design a miniaturized diplexer through a T-junction.…”

Section: Introductionmentioning

confidence: 99%

Short-Circuited Stub-Embedded Ring Resonator and its Application in Diplexer

Ren

Guan

et al. 2019

IEEE Access

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Two types of short-circuited stub-embedded ring resonators (SERRs) are proposed in this paper. The resonant modes of the SERR can be designed by properly choosing the short-circuited point on the resonator. When the short-circuited point is set at the open-end of embedded-stub, type A resonator is realized and large frequency ratio of harmonic to fundamental frequency can be achieved. Simultaneously, wide stopband can be realized. When the short-circuited point is set at the loop portion of SERR, type B resonator is realized and low frequency ratio of harmonic to fundamental frequency can be achieved. These characteristics of the resonators type A and type B are explored and combined in a diplexer with common resonator part. Each channel of the diplexer are constructed by using the type A resonators for wide stopband, and then combined via a type B resonator for designated frequencies. A third-order diplexer operating at 3.45/5.8 GHz for fifth generation of mobile communications (5G) and wireless local area networks (WLAN) is designed, fabricated, and measured. Measured results agree well with the simulated ones, which confirms the proposed design methodology. INDEX TERMS Common resonator, diplexer, short-circuited stub-embedded ring resonator (SERR), wide stopband.

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Design of compact microstrip diplexer with high selectivity

Cited by 8 publications

References 9 publications

A Novel Design of an H-shaped Microstrip Diplexer

A Novel Design of an H-shaped Microstrip Diplexer

Four-Port Dual-Mode Diplexer with High Signal Isolation

Short-Circuited Stub-Embedded Ring Resonator and its Application in Diplexer

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