## REFERENCES

[1]
B. Razavi : Design considerations for direct-conversion receivers. IEEE Trans. Circuits Syst. II: Analog Digital Signal Process., 44 (6) (1997), 428–435.

[2]
S.A. Maas : Microwave Mixers, 2nd ed. Artec House, Boston, London, 1993.

[3]
N. Marchand : Transmission-line conversion transformers. Electronics, 17 (1944), 142–145.

[4]
Z.-Y. Zhang ; Y.-X. Guo ; L. Ong ; M.Y.W. Chia : A new planar Marchand balun, in Int. Microwave Symp. (MTT-S), Long Beach, CA, USA, 2005.

[5]
K.S. Ang ; I.D. Robertson ; K. Elgaid ; I.G. Thayne : 40 to 90 GHz impedance-transforming CPW Marchand balun, in IEEE MTTS Int. Microwave Symp. Digest, Boston, MA, USA, 2000, 1141–1144.

[6]
T.-G. Ma ; C.-C. Wang ; C-.H. Lai : Miniaturized distributed Marchand balun using coupled synthesized CPWs. IEEE Microw. Wireless Compon. Lett., 21 (2011), 188–190.

[7]
K.S. Ang ; Y.C. Leong ; C.H. Lee : Analysis and design of miniaturized lumped-distributed impedance-transforming baluns. IEEE Trans. Microw. Theory Tech., 51 (2003), 1009–1017.

[8]
T.K. Johansen ; V. Krozer : Analysis and Design of Lumped Element Marchand Baluns, In Mikon Conf. Proc., Wroclaw, Poland, 2008.

[9]
X. Miao ; W. Zhang ; Y. Geng ; X. Chen ; R. Ma ; J. Gao : Design of compact frequency-tuned microstrip balun. IEEE Antennas Wireless Propag. Lett., 9 (2010), 686–688.

[10]
R. Michaelsen ; T. Johansen ; K. Tamborg ; V. Zhurbenko : a modified Marchand balun configuration with tunable phase balance. IEEE Microw. Wireless Compon. Lett., 23 (2013), 66–68.

[11]
R. Michaelsen ; T. Johansen ; K. Tamborg ; V. Zhurbenko : Design of a broadband passive X-band double-balanced mixer in SiGe HBT technology. Int. J. Microw. Wireless Technol., 6 (2014), 235–242.

[12]
R.S. Michaelsen ; T.K. Johansen ; T. Kjeld ; Z. Vitaliy : A Passive X-Band Double Balanced Mixer Utilizing Diode Connected SiGe HBTs, 8th European Microwave Integrated Circuit Conf. (EuMIC), Nuremberg, Germany, 2013.

[13]
R.M. Rassel
et al. : Schottky barrier diodes for millimeter wave sigebicmos applications, in Proc. of the 2006 Bipolar/Bicmos Circuits and Technology Meeting, Maastricht, Netherlands, 2006.

[14]
R. Michaelsen ; T. Johansen ; K. Tamborg : Investigation of LO-leakage cancellation and DC-offset influence on flicker-noise in X-band mixers, in 7th European Microwave Integrated Circuit Conf. (EuMIC), Amsterdam, Netherlands, 2012.

[15]
S.A. Maas : Nonlinear Microwave and RF Circuits, 2nd ed. Artec House, 2003.

[16]
Y. Wang ; J.S. Duster ; K.T. Kornegay ; H. Park ; J. Laskar : An 18 GHz low noise high linearity active mixer in SiGe, in Proc. IEEE Int. Symp. Circuits and Systems, 2005.

[17]
M. Sudow ; K. Andersson ; P-A. Nilsson ; N. Rorsman : A highly linear double balanced Schottky diode S-band mixer. IEEE Microw. Wireless Compon. Lett., 16 (2006), 336–338.

[18]
R. Michaelsen ; T. Johansen ; V. Krozer : Design of a x4 subharmonic sub-millimeter wave diode mixer, based on an analytic expression for small-signal conversion admittance parameters, in 2013 Microwave and Optoelectronics Conf. (IMOC), Rio de Janeiro, Brazil, 2013.

[19]
M. Abramowitz ; I.A. Stegun : Handbook of Mathematical Functions, Dover Publications, Washington, DC, USA, 1968.