Field effect transistor circulators

Ayasli, Y.

doi:10.1109/20.42266

Cited by 74 publications

(27 citation statements)

References 4 publications

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“…By properly adjusting the electrical lengths and gains of the reciprocal and nonreciprocal paths, the signal can be expected to have a certain degree of phase cancellation resulting in a nonreciprocal response. In fact, this approach was used to develop non-ferrite circulators and nonreciprocal phase shifters [4][5][6]. The main property of these circuits is the bidirectional behavior of the transmission coefficient.…”

Section: Circuit Descriptionmentioning

confidence: 99%

Nonreciprocal coupling network for beam steering coupled oscillator arrays

Martinez-Lopez

Moussounda

Rojas

2010

2010 IEEE International Symposium on Phased Array Systems and Technology

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A nonreciprocal coupling network for beam steering coupled oscillator arrays is proposed. The circuit is based on the nonreciprocal behavior of transistor amplifiers that were specifically designed to increase the array stability while extending the achievable scanning range. Nonreciprocal coupling phases up to ± 180° are obtained for a weakly coupled oscillator array of patch antennas at 10 GHz.

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Section: Circuit Descriptionmentioning

confidence: 99%

Nonreciprocal coupling network for beam steering coupled oscillator arrays

Martinez-Lopez

Moussounda

Rojas

2010

2010 IEEE International Symposium on Phased Array Systems and Technology

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“…Later modifications were made and was designed for microwave frequencies with GaAs FETs with supply voltages above 10 V [20]. In later years the circulator was redesigned in 180 nm CMOS process for a supply voltage of 3.5 V and frequency of 2.4 GHz [21].…”

Section: Proposed Analog Phase Shiftermentioning

confidence: 99%

A 60 GHz Analog Phase Shifter in 65 nm Bulk CMOS Process

Harrison¹,

Ping²

2010

IJCNC

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“…The non-reciprocal behavior of unilateral amplifiers can also be used. These so-called active circulators have recently been investigated by several authors [2]- [6], as an alterative for their ferrite counterparts. They offer the advantage of small size and weight, low cost and compatibility with MMIC technology.…”

Section: Introductionmentioning

confidence: 99%