An All-Port Matched Impedance-Transforming Marchand Balun and Its Mixer Application

Mitchai CHONGCHEAWCHAMNAN; Kamorn BANDUDEJ; Apisak WORAPISHET; Choon Yong NG; Ian D. ROBERTSON

An All-Port Matched Impedance-Transforming Marchand Balun and Its Mixer Application

Mitchai CHONGCHEAWCHAMNAN, Kamorn BANDUDEJ, Apisak WORAPISHET, Choon Yong NG, Ian D. ROBERTSON

Full Text Views

0

Cite this

Summary :

A new technique to reduce the isolation network's size in a Marchand balun needed for perfect all-port matching and isolation is proposed. The proposed isolation circuit is realized using a coupled-line phase-inverter in place of the bulky 180line section that has been previously proposed. Analysis of the proposed circuit yields the required relationship between coupling coefficient and electrical length of the coupler. Based on the design equations, the circuit is experimentally demonstrated at 1.8 GHz and has shown excellent results. The obtained output return loss and isolation loss are more than 18 dB and 40 dB, respectively. The proposed balun was then applied to the application of a doubled-balanced ring-diode mixer. The designed mixer achieves a low conversion loss of 6 dB at its operating frequency, which is 1.5 dB lower than for a doubled-balanced diode mixer using a conventional impedance-transforming Marchand balun. The RF-IF and LO-IF isolations are well below 25 dB and 18 dB across 1 GHz RF operating bandwidth, respectively.

Publication: IEICE TRANSACTIONS on Electronics Vol.E86-C No.8 pp.1593-1600

Publication Date: 2003/08/01

Publicized

Online ISSN

DOI

Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)

Category

Cite this

Copy

Mitchai CHONGCHEAWCHAMNAN, Kamorn BANDUDEJ, Apisak WORAPISHET, Choon Yong NG, Ian D. ROBERTSON, "An All-Port Matched Impedance-Transforming Marchand Balun and Its Mixer Application" in IEICE TRANSACTIONS on Electronics, vol. E86-C, no. 8, pp. 1593-1600, August 2003, doi: .
Abstract: A new technique to reduce the isolation network's size in a Marchand balun needed for perfect all-port matching and isolation is proposed. The proposed isolation circuit is realized using a coupled-line phase-inverter in place of the bulky 180line section that has been previously proposed. Analysis of the proposed circuit yields the required relationship between coupling coefficient and electrical length of the coupler. Based on the design equations, the circuit is experimentally demonstrated at 1.8 GHz and has shown excellent results. The obtained output return loss and isolation loss are more than 18 dB and 40 dB, respectively. The proposed balun was then applied to the application of a doubled-balanced ring-diode mixer. The designed mixer achieves a low conversion loss of 6 dB at its operating frequency, which is 1.5 dB lower than for a doubled-balanced diode mixer using a conventional impedance-transforming Marchand balun. The RF-IF and LO-IF isolations are well below 25 dB and 18 dB across 1 GHz RF operating bandwidth, respectively.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e86-c_8_1593/_p

Copy

@ARTICLE{e86-c_8_1593,
author={Mitchai CHONGCHEAWCHAMNAN, Kamorn BANDUDEJ, Apisak WORAPISHET, Choon Yong NG, Ian D. ROBERTSON, },
journal={IEICE TRANSACTIONS on Electronics},
title={An All-Port Matched Impedance-Transforming Marchand Balun and Its Mixer Application},
year={2003},
volume={E86-C},
number={8},
pages={1593-1600},
abstract={A new technique to reduce the isolation network's size in a Marchand balun needed for perfect all-port matching and isolation is proposed. The proposed isolation circuit is realized using a coupled-line phase-inverter in place of the bulky 180line section that has been previously proposed. Analysis of the proposed circuit yields the required relationship between coupling coefficient and electrical length of the coupler. Based on the design equations, the circuit is experimentally demonstrated at 1.8 GHz and has shown excellent results. The obtained output return loss and isolation loss are more than 18 dB and 40 dB, respectively. The proposed balun was then applied to the application of a doubled-balanced ring-diode mixer. The designed mixer achieves a low conversion loss of 6 dB at its operating frequency, which is 1.5 dB lower than for a doubled-balanced diode mixer using a conventional impedance-transforming Marchand balun. The RF-IF and LO-IF isolations are well below 25 dB and 18 dB across 1 GHz RF operating bandwidth, respectively.},
keywords={},
doi={},
ISSN={},
month={August},}

Copy

TY - JOUR
TI - An All-Port Matched Impedance-Transforming Marchand Balun and Its Mixer Application
T2 - IEICE TRANSACTIONS on Electronics
SP - 1593
EP - 1600
AU - Mitchai CHONGCHEAWCHAMNAN
AU - Kamorn BANDUDEJ
AU - Apisak WORAPISHET
AU - Choon Yong NG
AU - Ian D. ROBERTSON
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E86-C
IS - 8
JA - IEICE TRANSACTIONS on Electronics
Y1 - August 2003
AB - A new technique to reduce the isolation network's size in a Marchand balun needed for perfect all-port matching and isolation is proposed. The proposed isolation circuit is realized using a coupled-line phase-inverter in place of the bulky 180line section that has been previously proposed. Analysis of the proposed circuit yields the required relationship between coupling coefficient and electrical length of the coupler. Based on the design equations, the circuit is experimentally demonstrated at 1.8 GHz and has shown excellent results. The obtained output return loss and isolation loss are more than 18 dB and 40 dB, respectively. The proposed balun was then applied to the application of a doubled-balanced ring-diode mixer. The designed mixer achieves a low conversion loss of 6 dB at its operating frequency, which is 1.5 dB lower than for a doubled-balanced diode mixer using a conventional impedance-transforming Marchand balun. The RF-IF and LO-IF isolations are well below 25 dB and 18 dB across 1 GHz RF operating bandwidth, respectively.
ER -