Topic
Balun
About: Balun is a research topic. Over the lifetime, 5375 publications have been published within this topic receiving 52256 citations. The topic is also known as: Telephone balance unit.
Papers published on a yearly basis
Papers
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18 Jul 1997
TL;DR: In this article, a lumped constant compensated high/pass balun (balance line to unbalance line transition) was proposed for microwave integrated circuits (MIC) and mononolithic microwave integrated circuit (MMIC) designs.
Abstract: The invention proposes a lumped constant compensated high/pass balun (balance line to unbalance line transition). The proposed circuit can be used in microwave integrated circuit(MIC) and mononolithic microwave integrated circuit(MMIC) designs. The basic operating principle of the proposed circuit is to use two sets of lumped type high pass and low pass filters to synthesize a microwave balun. The first filter set provides the wide band 180° phase difference property for the balun circuit. The amplitude imbalance of the balun is compensated by the other filter set. The advantage of the proposed circuit is to replace the bulky and non-planar distributed balun or traditional transformer in low microwave frequency range.
19 citations
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11 Jun 1998TL;DR: Using a low noise active balun and a push-pull active matching circuit, a wideband low noise amplifier MMIC is designed and fabricated in this paper, where the output VSWR is less than 1.3 dB and the output power handling capability is enhanced compared with conventional active matching circuits.
Abstract: Using a low noise active balun and a push-pull active matching circuit, a wideband low noise amplifier MMIC is designed and fabricated. For the frequency up to 3 GHz, output VSWR is less than 1.3 and the output power handling capability of 9.4 dB is enhanced compared with conventional active matching circuit.
19 citations
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11 Sep 2003TL;DR: The double-y balun was originally developed for use with balanced mixers as mentioned in this paper, and the feasibility of this balun for feeding pulsed antennas was investigated via time-domain pattern measurements of a resistively loaded V-dipole.
Abstract: The double-y balun, transitioning from an unbalanced coplanar waveguide (CPW) to a balanced coplanar strip (CPS), was originally developed for use with balanced mixers In this paper, the
feasibility of this balun for feeding pulsed antennas was investigated via time-domain pattern measurements of a resistively loaded V-dipole The need for a balun when feeding a symmetric antenna is illustrated via time-domain pattern measurements of the resistively loaded V-dipole with and without the double-y balun
19 citations
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01 Dec 2011TL;DR: In this paper, a 77 GHz integrated on-chip Yagi antenna with unbalanced-to-balanced bandpass filter with an integrated passive device (IPD) technology is presented.
Abstract: This paper presents the design and implementation of a 77-GHz integrated on-chip Yagi antenna with unbalanced-to-balanced bandpass filter with an integrated passive device (IPD) technology. The Yagi antenna is fed by the balanced output of the balun-filter, whose amplitude and phase differences between the balance ports from 74 to 82 GHz are within 0.5 dB and 180° ± 5°, respectively. The Friis power transmission formula is used to determine the radiation power gain. The measured input VSWR is less than 3 from 71 to 78 GHz and the power gain is about 0.5 dBi at 77 GHz.
19 citations
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22 Nov 2004TL;DR: A monolithic 4-way power combining balun facilitates the implementation of 21 GHz to 27 GHz power amplifiers using silicon transistors and enhances the magnetic coupling coefficient (k>0.85) and reduces substrate loss and skin effect at mm-wave frequencies.
Abstract: A monolithic 4-way power combining balun facilitates the implementation of 21 GHz to 27 GHz power amplifiers using silicon transistors. The combiner transforms a 50 /spl Omega/ output to four 13 /spl Omega/ loads with 3% mismatch at 0.9 dB power loss, using a novel symmetric, self-shielding design. This also enhances the magnetic coupling coefficient (k>0.85) and reduces substrate loss and skin effect at mm-wave frequencies.
19 citations