Implementation of a quadrature hybrid for miniature mixer application

Lai, Yu Ann; Su, Chun Chi; Hou, Jian An; Lin, Chih Ming; Wang, Yeong-Her

doi:10.1002/mop.24499

Cited by 6 publications

(2 citation statements)

References 6 publications

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“…The balun topology of a single‐balanced diode mixer is mostly based upon 90° and 180° hybrids providing good RF to local oscillator (LO) isolation. The quadrature hybrid and ring (rat‐race) hybrid for the baluns of single‐balanced diode mixers have been studied due to their good performance and easy design . On the other hand, the transformers , substrate integrated waveguide (SIW) couplers , Gilbert‐cell , and Marchand baluns were also utilized.…”

Section: Introductionmentioning

confidence: 99%

A compact wideband ring mixer utilizing a pair of PLANAR transitions for phase inversion

Mohyuddin

Kim²,

Woo

et al. 2014

Microw. Opt. Technol. Lett.

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A new design of a compact wideband ring mixer is introduced in this article. The proposed mixer utilizes a compact ring structure comprising a pair of ultra‐wideband planar in‐phase and inverted‐phase transitions as a mixer balun. The implemented mixer has a number of desirable features such as wide bandwidth (∼120%), compact size, excellent port‐to‐port isolations, and return loss. The size of the proposed mixer is 33.2% of the conventional single‐balanced ring mixers. The measured results show flat conversion loss of ∼8.5 dB and greater than 20 dB port‐to‐port isolation from 3 to 12 GHz. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1919–1922, 2014

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Section: Introductionmentioning

confidence: 99%

A compact wideband ring mixer utilizing a pair of PLANAR transitions for phase inversion

Mohyuddin

Kim²,

Woo

et al. 2014

Microw. Opt. Technol. Lett.

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“…BLCs are requisite components in many modern wireless communication systems; they are for instance employed as major building component of Butler matrices . They are also extensively utilized in designing many microwave circuits such as balanced mixers and amplifiers , switched multiplexers , filters , and power combiners/dividers .…”

Section: Introductionmentioning

confidence: 99%

Compact Wide‐Band Branch‐Line Coupler with Meander Line, Cross, and Two‐Step Stubs

Sa’ad

Rahim

Dewan

2013

Micro & Optical Tech Letters

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Despite being widely used, branch‐line couplers (BLC) still suffer from large size. This makes it difficult to incorporate BLC into miniature microwave devices. The work presented here is the design and implementation of a 3‐dB reduced‐size wide‐band 3‐branch‐line coupler (3‐BLC). By combining meander line, cross, and two‐step stubs techniques, size reduction and bandwidth improvement is successfully achieved on 3‐BLC design. The 3‐BLC length was reduced along the horizontal branches using two‐step reduction technique while the center vertical branch was reduced using cross stubs. A simple two‐turn meander line is utilized at the two ends vertical branches of the coupler to obtain balanced length with the middle vertical branch. Hence, its width was optimized to maximize the coupler bandwidth. The 3‐BLC was designed to operate at 2.45 GHz wireless local area network frequency band (IEEE 802.11 b/g) and fabricated on a 1.6 mm thick FR‐4 board. The simulated and measured results are in very good agreement and show a fractional bandwidth of 50% and a sized reduction of 61.64% at the center of the frequency band. The proposed coupler design provides BLC that occupies less space, simple to implement, and wide‐band BLC architecture with generic 3‐BLC wide‐band characteristics retained. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1810–1815, 2013

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A compact coupler design using meandered line compact microstrip resonant cell (MLCMRC) and bended lines

Roshani

2020

Wireless Netw

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Implementation of a quadrature hybrid for miniature mixer application

Cited by 6 publications

References 6 publications

A compact wideband ring mixer utilizing a pair of PLANAR transitions for phase inversion

A compact wideband ring mixer utilizing a pair of PLANAR transitions for phase inversion

Compact Wide‐Band Branch‐Line Coupler with Meander Line, Cross, and Two‐Step Stubs

A compact coupler design using meandered line compact microstrip resonant cell (MLCMRC) and bended lines

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