Narrow-band power dividers with wide range tunable power-dividing ratio

Zarghami, Sepehr; Hayati, Mohsen

doi:10.1038/s41598-022-22178-0

Cited by 8 publications

(3 citation statements)

References 41 publications

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“…Notwithstanding, researchers have presented Wilkinson power divider techniques for harmonic suppression frequencies such as an anti-coupled line [17], parallel-coupled line structure [18], looped coupled-line [19], inductively loaded microstrip line [20], and bandpass or band stop filter [21][22][23]. The utilization of power divider applications needing a narrowband divider and bandpass filter designs are prevalent in the construction of I-Q demodulator topologies, leading to the creation of simplified circuits [24][25][26][27]. For RF and microwave circuit design, including balanced amplifiers, phase shifters, image rejection mixers, I/Q modulators, and circularly polarized antenna polarizers, the techniques mentioned above can produce spurious harmonic frequencies.…”

Section: Introductionmentioning

confidence: 99%

Design of Wilkinson Power Dividers with SITL Compensated Microstrip Bandpass Filters

Phomloungsri,

Srisawat,

Sonasang

et al. 2024

ACES Journal

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This paper presents a simple technique for improving performances of a conventional Wilkinson power divider. The technique is achieved by replacing bulky quarter-wave transmission lines with stepped impedance transmission lines (SITL) compensated coupled lines. With the internal function of bandpass filter integrated with the proposed coupled lines, the spurious response at 2nd harmonics frequencies that normally exists in the conventional divider is considerably reduced. Simulated and measured results at 2.1 GHz operating frequency of the proposed and conventional Wilkinson power divider were compared. The proposed divider achieves -3.8 dB insertion loss (S21,S31) and more than 25 dB return loss (S11,S22,S33) across 10% fractional bandwidth. Based on this measurement, the proposed circuit achieves more than 34.5 dB suppression at the 2nd harmonic frequency.

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Section: Introductionmentioning

confidence: 99%

Design of Wilkinson Power Dividers with SITL Compensated Microstrip Bandpass Filters

Phomloungsri,

Srisawat,

Sonasang

et al. 2024

ACES Journal

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“…A power divider with tunable PDR and NGD will be beneficial to overcome this design challenge 16 . Power dividers based on controlling insertion loss and having a wide range dividing ratio and narrow bandwidth are presented in 17 . However, GD analysis is not done in this work.…”

Section: Introduction 1 Introductionmentioning

confidence: 99%

Design Theory of Compact Power Divider with Reconfigurable Power Division and Negative Group Delay Characteristics

Nair

Natarajamani

2023

Preprint

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This article presents the combined analysis of reconfigurable power division and Negative Group Delay (NGD) in a power divider. A novel composite transmission line (CT) based reconfigurable power divider with high power division ratio, variable negative group delay and lower characteristic impedance is presented in this work. The impedance transformation in composite transmission lines controls both NGD and power division. This power divider possesses a wide range of power division ratios from 1 to 39, adequate isolation, impedance matching, and NGD of-3.4 ns to-4.7 ns in the reconfigurable transmission path. The NGD is achieved without using any additional group delay circuits. Theoretical equations corresponding to the low characteristic impedance of the transmission line sections and that of isolation elements are derived. The measurement results justifies the attainment of high tuning of the power division ratio, and NGD. Isolation and return loss are higher than-15dB at the centre frequency of 1.5GHz. The major contributions of this design can be listed as the wide reconfigurable power division along with negative group delay and reduced size.

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“…In [5] a balanced-to-unbalanced power divider is presented, which have narrow bandpass response, and without suppressing harmonic. Although power dividers of [6] have tunable power dividing ratio, suppression of harmonics has not been paid. This disadvantage can be seen in power tri-frequency power divider of [7].…”

Section: Introductionmentioning

confidence: 99%

Design of wide rejection harmonic band Wilkinson power divider based on single suppressor topology for UHF applications

Al-Zubaidi

Abbasi

2023

Preprint

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This paper proposed a new topology of Wilkinson power divider based on the one harmonic suppressor structure. In previous works, low- and band-pass filters have been used instead of quarter-wavelength lines in conventional Wilkinson's power divider design. But in this research, a low-pass filter as a suppressor connected to the input terminal, then using two simple elliptical resonators divide the power. As a result, there is no need to two suppressor structures symmetrically. The operation of the power divider in this topology is that the spurious signals are completely suppressed by the suppressor structure, then the signal is divided and reaches the output terminals with the desired frequency. This innovation is being introduced for the first time. On the other hand, the proposed suppressor structure has two rectangular elliptical resonators with a long base length and two pairs of rectangular resonators with a short base length to suppress harmonics up to sixth order. Next, the power is divided using two circular elliptical resonators. The measurement results show that the insertion and return losses are 3.09/3.11 dB and 30 dB, respectively at 1 GHz frequency, and suppression of harmonics up to the 18th order.

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Narrow-band power dividers with wide range tunable power-dividing ratio

Cited by 8 publications

References 41 publications

Design of Wilkinson Power Dividers with SITL Compensated Microstrip Bandpass Filters

Design of Wilkinson Power Dividers with SITL Compensated Microstrip Bandpass Filters

Design Theory of Compact Power Divider with Reconfigurable Power Division and Negative Group Delay Characteristics

Design of wide rejection harmonic band Wilkinson power divider based on single suppressor topology for UHF applications

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