Design of a novel dual-band impedance transformer

Barik, Rusan Kumar; Bishoyi, Pradyumna Kumar; Karthikeyan, S. S.

doi:10.1109/conecct.2015.7383868

Cited by 9 publications

(8 citation statements)

References 8 publications

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“…Several dual‐band, tri‐band, and quad‐band impedance transformers have been developed. Two‐section transmission lines and three‐section transmission line have been employed for real‐to‐real dual‐band impedance transformers.…”

Section: Introductionmentioning

confidence: 99%

“…, the exact closed form design formulas of the two‐section transmission line has been derived to achieve dual‐frequency operation. Two dual‐band transformers have been developed for complex load impedance by using four‐section, two‐section, and T‐shaped transmission lines. For all these transformers, only numerical results have been presented.…”

Section: Introductionmentioning

confidence: 99%

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A novel design of ultra‐high impedance transforming ratio quad‐band matching network

Barik

Karthikeyan

2017

Micro & Optical Tech Letters

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In this article, a novel design of quad‐band matching network (QBMN) with ultra‐high impedance transforming ratios (UHTRs) is proposed and designed based on ABCD matrix method. The QBMN is capable of matching a very large real load impedance at four different frequencies simultaneously. The quad‐band structure is composed of π‐section with series connected coupled lines at each port. The design formulas of QBMN are derived analytically to obtain the quad‐band operation. In order to validate the proposed idea, three examples of QBMN for different load impedances (500, 1000, and 1500 Ω) are considered. Finally, two QBMNs with transforming ratios of 10 and 20 are fabricated and demonstrated. For both the prototypes, the measured S11 is better than 15 dB at all working frequencies. The experimental performances are consistent with the simulated results.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel design of ultra‐high impedance transforming ratio quad‐band matching network

Barik

Karthikeyan

2017

Micro & Optical Tech Letters

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“…A π-model DBIT has been presented to match two arbitrary complex loads [14]. In [15], a DBIT has been designed using T-shaped coupled-line to transfer two complex load to a real source. Different transmission lines are utilized to transfer two unequal complex loads in [16].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is frequently used in many applications such as power combining/splitting, baluns, couplers, antennas and amplifiers. Many researchers focused on the development of ITs with ultra-high transforming ratio (UHTR) for wideband [1][2][3][4][5][6][7][8][9][10][11] and multi-frequency operations [12][13][14][15][16][17][18][19][20][21][22][23]. Various techniques such as a transmission line and coupled-line section [1], a parallel coupled-line and shunt open-stub [2], multi-section quarter-wavelength line [3] and two-section transmission lines [4] have been employed to develop wideband ITs.…”

Section: Introductionmentioning

confidence: 99%

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Dual-Frequency Impedance Transformer Using Coupled-Line For Ultra-High Transforming Ratio

Barik¹,

Karthikeyan²

2017

RADIOENGINEERING

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Design of dual/tri-frequency impedance transformer with ultra-high transforming ratio

Barik¹,

Karthikeyan²

2017

Int. J. Microw. Wireless Technol.

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In this article, the design of a new dual-band impedance transformer with ultra-high transforming ratio (UHTR) is presented. The closed-form expressions are derived analytically using a lossless transmission-line theory. To practically validate the proposed design concept, two examples of dual-band transformer working at smaller and larger frequency ratios are designed for different load impedance of 500, 1000, and 1500 Ω. Finally, three prototypes of dual-band transformer with UHTR are designed, fabricated, and tested. For all these prototypes, different frequency ratios (two operating frequencies can be chosen arbitrarily) are considered. The measured return loss of the prototypes is better than 15 dB at all the operating frequencies. The measured results are matched very closely with the simulated results. This design is then extended to match a complex load at two different frequencies. The multi-band characteristic is obtained by decomposing a shorted stub into a stepped impedance section of the proposed structure. With the necessary derivation and analysis, a tri-frequency matching network is designed for a transforming ratio of 10.

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Design of a novel dual-band impedance transformer

Cited by 9 publications

References 8 publications

A novel design of ultra‐high impedance transforming ratio quad‐band matching network

A novel design of ultra‐high impedance transforming ratio quad‐band matching network

Dual-Frequency Impedance Transformer Using Coupled-Line For Ultra-High Transforming Ratio

Design of dual/tri-frequency impedance transformer with ultra-high transforming ratio

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