A planar Marchand balun for wideband performance

Author(s):  
Jichen Li ◽  
Kaiyu Liu ◽  
Tianlong Li
Keyword(s):  
2006 ◽  
Vol 54 (12) ◽  
pp. 4362-4371 ◽  
Author(s):  
Sheng-Che Tseng ◽  
Chinchun Meng ◽  
Chia-Hung Chang ◽  
Chih-Kai Wu ◽  
Guo-Wei Huang
Keyword(s):  

2017 ◽  
Vol 59 (10) ◽  
pp. 2704-2704 ◽  
Author(s):  
Bijan Abbasi Arand ◽  
Mohammad Amrollahzadeh ◽  
Saeed Kamalzadeh

2014 ◽  
Vol 53 ◽  
pp. 67-73
Author(s):  
Shi Bai ◽  
Wenjie Feng ◽  
Wenquan Che

Author(s):  
Y.x. Guo ◽  
Z.y. Zhang ◽  
L.c. Ong
Keyword(s):  

2016 ◽  
Vol 9 (5) ◽  
pp. 965-976
Author(s):  
Rasmus S. Michaelsen ◽  
Tom K. Johansen ◽  
Kjeld M. Tamborg ◽  
Vitaliy Zhurbenko ◽  
Lei Yan

In this paper, we propose a double balanced mixer with a tunable Marchand balun. The circuit is designed in a SiGe BiCMOS process using Schottky diodes. The tunability of the Marchand balun is used to enhance critical parameters for double balanced mixers. The local oscillator-IF isolation can be changed from –51 to –60.5 dB by tuning. Similarly, the IIP2can be improved from 41.3 to 48.7 dBm at 11 GHz, while the input referred 1-dB compression point is kept constant at 8 dBm. The tuning have no influence on conversion loss, which remains at 8.8 dB at a LO power level of 11 dBm at the center frequency of 11 GHz. The mixer has a 3 dB bandwidth from 8 to 13 GHz, covering the entire X-band. The full mixer has a size of 2050 μm × 1000 μm.


2019 ◽  
Vol 11 (08) ◽  
pp. 761-764
Author(s):  
Kaijun Song ◽  
Fei Xia ◽  
Yuxuan Chen ◽  
Yu Zhu ◽  
Jiawei Li ◽  
...  

AbstractA compact wideband out-of-phase power divider (PD) with improved isolation performance is proposed. This divider is formed by connecting an additional stub for isolation to output ports of a traditional Marchand balun with a defected ground structure (DGS) been used. To verify the design, a prototype divider is fabricated and tested. The measured results validate the 53.86% band-width centered at 3.43 GHz with more than 15 dB return loss at all ports, more than 17 dB isolation, respectively.


2020 ◽  
Vol 12 (9) ◽  
pp. 915-921
Author(s):  
Ling-Ling Yang ◽  
Yan-Hui Ke ◽  
Jian-Xin Chen

AbstractA bidirectional dielectric resonator (DR) antenna array using back-to-back quasi-Yagi antenna configuration is proposed and implemented for the first time. The DR operating at higher-order TE3δ1 mode is used as a magnetic dipole, applying for the driver of quasi-Yagi antenna. Due to the high-order mode employment, the antenna gain can be enhanced. By partially loading the metallic strip on the side wall of the DR, the gain can be further enhanced. In addition, a simple dual Marchand balun is constructed for feeding the two quasi-Yagi antennas directly for bidirectional radiation. To verify the design concept, a prototype operating at the X-band is fabricated and measured. Good agreement between the simulated and measured results can be observed.


Author(s):  
Mohammadreza Ranjbar Naeini ◽  
Mirhamed Mirmozafari ◽  
Daniel van der Weide

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