Matrix Power Amplifier With Open-Circuit Composite Right-/Left-Handed Transmission Line

Mazani, Zahra; Abdipour, Abdolali; Afrooz, Kambiz

doi:10.1109/lmwc.2019.2893326

Cited by 8 publications

(3 citation statements)

References 14 publications

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“…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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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

Self Cite

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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. 9,10 CRLH TL can be implemented based on unit cells with lumped elements or distributed sections.…”

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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“…In Reference , CRLH structures are used in different PAs, and the related performance parameters are summarized in Table . From Table , it can be seen that all these PAs are basically in narrow‐band, single‐frequency, and dual‐frequency…”

Section: Introductionmentioning

confidence: 99%

A broadband and excellent flatness power amplifier with novel‐designed band‐pass filter based on composite right/left‐handed unit cell

Luo

Wang

Lei

2020

Micro & Optical Tech Letters

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In this paper, a broadband and excellent flatness power amplifier (PA) with a novel‐designed band‐pass filter based on composite right/left‐handed (CRLH) unit cell structure is proposed. On studying the structure of CRLH unit cell, a way to enhance PA bandwidth, gain flatness, and power‐added efficiency (PAE) flatness is explored. The novel‐designed CRLH unit cell structure is studied and applied in PA design. The measurements show that the PA has an output power of greater than 40 dBm, a gain flatness of 0.5 dB, and a PAE flatness of 4.4% within 1.7‐3.1 GHz bandwidth.

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Matrix Power Amplifier With Open-Circuit Composite Right-/Left-Handed Transmission Line

Cited by 8 publications

References 14 publications

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

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

A broadband and excellent flatness power amplifier with novel‐designed band‐pass filter based on composite right/left‐handed unit cell

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