State of the Art for Differential Circuits in Wireless Transceivers: A New Wideband Active Balun in SiGe BiCMOS Technology

Balwant GODARA; Alain FABRE

Makale detayları

State of the Art for Differential Circuits in Wireless Transceivers: A New Wideband Active Balun in SiGe BiCMOS Technology

Yazarlar:

Balwant GODARA | Alain FABRE

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2006 Vol.14 Issue 3, pp.355-386

Belge Tipi:

Makale

Yayın Tarihi:

2/2006

Belge Dili:

Türkçe

Document ID (Org No.):

2000744129

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

The aim of this paper is 3-fold: firstly, to provide a  comprehensive overview of the use of differential circuits for  analogue signal processing in wireless transceivers; secondly, to  describe, in detail, single-ended signal to differential conversion,  and the corresponding theory of such devices, their characterisation,  various methods of implementation, and comparative analyses of their  performance; lastly, to propose a new transistor-based solution for  wideband baluns.  This novel solution is based on the current conveyor  and has been modelled using the transistor parameters of a 0.35 m m  SiGe BiCMOS technology.  The salient features of the new  implementation are: (a) stable 50-W input port impedance and  easily controllable output impedance (50 W/75 W/100 W);  (b) stable matching between the differential output ports, within 1 dB  (3 dB) amplitude and 10° (20°) phase balance up to 2 GHz (3 GHz); (c)  good signal quality with output signal harmonic distortion lower than  1% for peak-to-peak input signals up to 50 mV; (d) excellent  S-parameter performance (0-3 GHz) with return losses lower than --10  dB, reverse signal rejection better than 20 dB, more than 25 dB  isolation between the output ports, and 42 dB common-mode rejection;  and (d) stable performance over a 100 °C operating temperature range.   This performance advances the state of the art for single-ended to  differential conversion circuits (evinced upon detailed comparisons to  existent baluns).

 

The aim of this paper is 3-fold: firstly, to provide a  comprehensive overview of the use of differential circuits for  analogue signal processing in wireless transceivers; secondly, to  describe, in detail, single-ended signal to differential conversion,  and the corresponding theory of such devices, their characterisation,  various methods of implementation, and comparative analyses of their  performance; lastly, to propose a new transistor-based solution for  wideband baluns.  This novel solution is based on the current conveyor  and has been modelled using the transistor parameters of a 0.35 m m  SiGe BiCMOS technology.  The salient features of the new  implementation are: (a) stable 50-W input port impedance and  easily controllable output impedance (50 W/75 W/100 W);  (b) stable matching between the differential output ports, within 1 dB  (3 dB) amplitude and 10° (20°) phase balance up to 2 GHz (3 GHz); (c)  good signal quality with output signal harmonic distortion lower than  1% for peak-to-peak input signals up to 50 mV; (d) excellent  S-parameter performance (0-3 GHz) with return losses lower than --10  dB, reverse signal rejection better than 20 dB, more than 25 dB  isolation between the output ports, and 42 dB common-mode rejection;  and (d) stable performance over a 100 °C operating temperature range.   This performance advances the state of the art for single-ended to  differential conversion circuits (evinced upon detailed comparisons to  existent baluns).

Makale detayları

State of the Art for Differential Circuits in Wireless Transceivers: A New Wideband Active Balun in SiGe BiCMOS Technology

Yazarlar: Balwant GODARA | Alain FABRE

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2006 Vol.14 Issue 3, pp.355-386

Belge Tipi: Makale

Yayın Tarihi: 2/2006

Belge Dili: Türkçe

Document ID (Org No.): 2000744129

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Balwant GODARA | Alain FABRE

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2006 Vol.14 Issue 3, pp.355-386

Belge Tipi:

Makale

Yayın Tarihi:

2/2006

Belge Dili:

Türkçe

Document ID (Org No.):

2000744129

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632