Active Dual-Band Power Divider and Active Quad-Plexer Based on Traveling Wave Amplification and D-CRLH Transmission Line

Mazani, Zahra; Abdipour, Abdolali; Afrooz, Kambiz

doi:10.1109/tcsii.2019.2917750

Cited by 5 publications

(3 citation statements)

References 22 publications

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“…Among them, Because of their wider bandwidth and lower loss metamaterial characteristics, dual composite right/left-handed (D-CRLH) transmission lines are used extensively [1,2]. The RF device structure designed by D-CRLH has the characteristics of high design freedom and miniaturization, which solves the problem of balance between size, cost, and efficiency [3,4,5,6]. As an important part of the RF front-end system, the diplexer is responsible for transmitting and receiving needed signals.…”

Section: Introductionmentioning

confidence: 99%

A wideband and self-packaged D-CRLH diplexer based on substrate-integrated suspended line

Yan

2023

IEICE Electron. Express

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This letter presents a new microstrip diplexer with selfpackaged and wide bandwidth based on substrate-integrated suspended line (SISL) technology. Diplexer consists of D-CRLH filters which include mixed coupling. The electromagnetic interaction is canceled out in the filter, generating two transmission zeros and giving the filter good stopband suppression. Diplexer utilizes a T-junction to make filters work in parallel. Each channel filter can be individually controlled. To validate the proposal, a diplexer operating at 1.88 GHz and 2.64GHz with fractional bandwidth (FBW) of 14.6% and 19.1% is designed and fabricated. A good agreement is perceived between measured and simulated.

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Section: Introductionmentioning

confidence: 99%

A wideband and self-packaged D-CRLH diplexer based on substrate-integrated suspended line

Yan

2023

IEICE Electron. Express

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“…There are different types of CRLH transmission lines that can be realized including interdigital and complementary split-ring resonator (CSRR) [7,9]. CRLH transmission lines can be potentially employed in the wide variety of passive components such as filter [10][11][12], power divider [13][14][15], coupler [16][17][18], antenna [19][20][21], and triplexer [22,23]. Likewise, CRLH transmission lines can be utilized in active components, namely power amplifiers [24][25][26] and distributed amplifiers [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Compact Active Duplexer Based on CSRR and Interdigital Loaded Microstrip Coupled Lines for Lte Application

Keshavarz¹,

Keshavarz²,

Abdipour³

2021

PIER C

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In this paper, a four-port compact active duplexer based on a complimentary split ring resonator (CSRR) and interdigital loaded microstrip coupled lines (CSRR-IL MCL) is presented. Interdigital capacitor is used on the top layer of the proposed structure and CSRR transmission lines are used on the bottom layer of the coupled lines in order to increase the coupling of the proposed circuit and create triple band resonances, respectively. The proposed active duplexer has one input port and three output ports operating in three distinct operation frequencies which are 1.4 GHz, 1.8 GHz, and 3.2 GHz. The active duplexer is designed to target LTE applications which are prevalent among the new technologies and devices. The input signal is split in terms of frequency into the three designed frequencies and is amplified by 13 dB gain of the amplifiers placed at the output ports. The fractional bandwidths of the proposed structure at 1.4 GHz, 1.8 GHz, and 3.2 GHz are 5.2%, 2.8%, and 9.4%, respectively. It is worth mentioning that the size of the proposed active duplexer is 0.29λ 0 × 0.38λ 0 . The design guide of the proposed structure is presented, and it will be shown that the simulation as well as the measurement results of the proposed active duplexer have an acceptable agreement with each other. It should be noted that the VSWR of the proposed structure is less than 1.5 which means that the active duplexer has low return loss, and it is the plus point of it.

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“…These TLs can be seen in recently reported microwave components such as filters, [1][2][3] power dividers, [4][5][6] antennas, 7 and power amplifiers. 8 The controllability of the dispersion diagram and the characteristic impedance of CRLH-TLs are the main feature of such lines that led to the design of improved microwave components in term of size and bandwidth.…”

Section: Introductionmentioning

confidence: 99%

A modified composite right/left‐handed unit cell for multiband applications

Mazani

Abdipour

Afrooz

2021

Micro & Optical Tech Letters

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A new planar 3‐band composite right/left‐handed (CRLH) unit cell is presented using an interdigital capacitor, two grounded stubs and etching a defected ground structure on the ground plane. A 3‐band filter is designed using this CRLH unit cell. In addition, with nonlinear dispersion relation of the 3‐band unit cell, it can be used as a hexa‐band quarter wave impedance transformer. Using this functionality, a planar hexa‐band power splitter is designed with relatively good performance. A fabricated prototype of the power divider is measured and the experimental results indicate that the power divider achieved better than 10 dB of return loss and the insertion loss is better than 6 dB over six‐frequency bands.

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Active Dual-Band Power Divider and Active Quad-Plexer Based on Traveling Wave Amplification and D-CRLH Transmission Line

Cited by 5 publications

References 22 publications

A wideband and self-packaged D-CRLH diplexer based on substrate-integrated suspended line

A wideband and self-packaged D-CRLH diplexer based on substrate-integrated suspended line

Compact Active Duplexer Based on CSRR and Interdigital Loaded Microstrip Coupled Lines for Lte Application

A modified composite right/left‐handed unit cell for multiband applications

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