This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 1 = 123 μ m, W 2 = W 3 = 75 μ m, V DD = 3 . 5 V, V b 1 = . 68 V, V b 2 = 1 . 5 V, V LO = 300 mV. The transistor is modeled by: model n25 mos1 type=n kp=260u vto=.4 tox=4n lambda=.1 cgso=.1p cgdo=.1p (a) Estimate the down-conversion power gain for the mixer for an input signal at 2 GHz with the LO drive at 2 . 1 GHz. (b) Verify your results using PSS and PXF in SpectreRF or HB in ADS. (c) Estimate the LO and RF port leakage? Conﬁrm with simulation. (d) ( 242M ) Simulate the SSB NF using PSS/PNoise or HB. How much of the noise contribution is from noise centered about the ﬁrst, second, and third LO harmonic? (e) ( 242M ) Convert the output signal to a diﬀerential signal. What are the advantages and disadvantages? Verify with simulation. (f) ( 242M ) Convert the mixer into a fully balanced architecture. Recalculate the conversion gain, noise ﬁgure, LO and RF port leakages, and verify with simulation. 2...
View Full Document