III. Gm-C Filtering - Epublications - Université de Limoges

More documents

Recommendations

Info

Table 22. Description of the capacitor bank Bit number 0 1 2 3 4 5 6 7 Capacitance (pF) 0.28 0.56 1.12 2.24 4.48 8.96 17.92 35.84 These 8 control bits together create a control byte co<strong>de</strong>, called Dtune, between 0 and 255. Figure 146 shows the evolution of the central frequency according to Dtune. Central frequency (MHz) 250 200 150 100 50 0 0 32 64 96 128 160 192 224 256 Dtune Figure 146. Central frequency of the filter versus Dtune - 130 -
IV.2.b Innovative Implementation of Gain K IV.2.b.i Open-loop Gain and Stability As explained, the positive feedback Rauch filter is unstable for small amplifier gain K values 0
Page 1:
UNIVERSITE DE LIMOGES ECOLE DOCTORA
Page 5 and 6:
Acknowledgments En préambule à ce
Page 7 and 8:
Summary ACKNOWLEDGMENTS ...........
Page 9 and 10:
V. A PERSPECTIVE FOR FUTURE DEVELOP
Page 11 and 12:
French Introduction Les signaux TV
Page 13 and 14:
I. Introduction to TV tuners and to
Page 15 and 16:
I.1.b.ii Digital modulations In dig
Page 17 and 18:
makes the covering of a large terri
Page 19 and 20:
I.1.c.iii Terrestrial spectrum Firs
Page 21 and 22:
I.1.e Broadband Reception Systems F
Page 23 and 24:
I.2.b TV Tuner High Performance Spe
Page 25 and 26:
I.2.b.ii High linearity Although co
Page 27 and 28:
I.3 RF Filter Specifications I.3.a
Page 29 and 30:
27. This leads to the downconversio
Page 31 and 32:
These adjacent channel rejection re
Page 33 and 34:
Above 870MHz, there are no more ter
Page 35 and 36:
Newest silicon tuners generations,
Page 37 and 38:
I.6 References [I.1] B. Razavi, RF
Page 39 and 40:
II. Challenges of RF Selectivity Fo
Page 41 and 42:
Figure 39. H3 and N+5 rejections of
Page 43 and 44:
Figure 43. Second order Low-pass Fi
Page 45 and 46:
Figure 46 illustrates the transfer
Page 47 and 48:
H HPF s ( s) = s 1 + ω This corres
Page 49 and 50:
Topologies comparison for a same Q-
Page 51 and 52:
Figure 56. Low-pass to Notch Transf
Page 53 and 54:
II.2 Passive LC Second Order Bandpa
Page 55 and 56:
A possible solution is to split the
Page 57 and 58:
II.2.c Second Order Bandpass Filter
Page 59 and 60:
Figure 69. Band Switching Figure 70
Page 61 and 62:
Another paper [II.7] provides a FOM
Page 63 and 64:
A parallel self resonating circuit
Page 65 and 66:
This gives the following values for
Page 67 and 68:
Vb - 63 - M1 M2 Zin Figure 76. Anot
Page 69 and 70:
when given, reported noise figures
Page 71 and 72:
In all publications dedicated to Gm
Page 73 and 74:
II.4.c Second Order Bandpass Filter
Page 75 and 76:
Figure 87. Biquad Schematic The Gm-
Page 77 and 78:
Vin Rm - 73 - C Vout Figure 89. Der
Page 79 and 80:
Figure 93 depicts the RF performanc
Page 81 and 82:
A second advantage of advanced BiCM
Page 83 and 84: II.7 Conclusion As a conclusion, th
Page 85 and 86: [II.13] C. Andriesei, L. Goras, and
Page 87 and 88: III.I Theoretical Study III. Gm-C F
Page 89 and 90: g V m3 in III.1.b Linearity Conside
Page 91 and 92: Assuming an ideal input transconduc
Page 93 and 94: Figure 102. Linearity of the filter
Page 95 and 96: Furthermore, a Gm-C circuit is not
Page 97 and 98: In terms of noise, the Flicker nois
Page 99 and 100: Table 7 summarizes the specificatio
Page 101 and 102: Idiff (A) levels reached with this
Page 103 and 104: III.2.e Unbalanced Differential Pai
Page 105 and 106: Hence, the combination of the expon
Page 107 and 108: Technique Current Increase Source D
Page 109 and 110: Using this structure and considerin
Page 111 and 112: The dimensioning of the transistors
Page 113 and 114: III.3.c Gm-cells with MGTR III.3.c.
Page 115 and 116: Furthermore, the high sensitivity t
Page 117 and 118: Figure 136. Filter in-band IIP3 ver
Page 119 and 120: III.4 Comparison of the filters III
Page 121 and 122: III.5 Conclusion Once the Gm-C seco
Page 123 and 124: IV. Rauch Filtering IV.1 Sallen-Key
Page 125 and 126: Thus, an equation linking Q and Gai
Page 127 and 128: IV.1.c.ii Proposed positive feedbac
Page 129 and 130: For both Rauch and Sallen-Key filte
Page 131 and 132: The high sensitivity to passive com
Page 133: Furthermore, it should also be take
Page 137 and 138: esulting gain K, constituted of the
Page 139 and 140: Table 25. Sum-up of the OA specific
Page 141 and 142: Figure 153. OA voltage gain versus
Page 143 and 144: Filtering in the mirror, by means o
Page 145 and 146: However, this feedback makes the fi
Page 147 and 148: Figure 160. OA Gain and phase versu
Page 149 and 150: IV.3.c Implemented Filter and Test
Page 151 and 152: Figure 165 depicts the layout of th
Page 153 and 154: Figure 169. PVT variations of the f
Page 155 and 156: IV.4 Rauch Filter Performances: Mea
Page 157 and 158: Figure 178. IIP3 versus input power
Page 159 and 160: IV.4.c Performances Sum-up The filt
Page 161 and 162: Table 30. Frequency Limitations of
Page 163 and 164: IV.7 References [IV.1] Y. Tsividis
Page 165 and 166: V. A Perspective for Future Develop
Page 167 and 168: V.2 4-path Filter Simulations V.2.a
Page 169 and 170: The frequency tunability is ensured
Page 171 and 172: V.3 State-of-the-Art V.3.a 4-path F
Page 173 and 174: V.4 Conclusion In this chapter, it
Page 175 and 176: IEEE International, 2009, pp. 222-2
Page 177 and 178: RF selectivity challenges In this t
Page 179 and 180: The positive feedback Rauch filter
Page 181 and 182: It is worth highlighting that FOM1
Page 183 and 184: étudiée. Il s’avère que la lin
Page 185 and 186:
It is worth noticing that S0 only d
Page 187 and 188:
A.3 Signal-to-Noise Ratio These dif
Page 189 and 190:
A.5 Friis’ Formula In case of mul
Page 191 and 192:
A.7 References [A.1] Friis, H.T., N
Page 193 and 194:
To estimate the influence of the di
Page 195 and 196:
Now, let’s have a look to the cub
Page 197 and 198:
Figure 200. Third order intercept p
Page 199 and 200:
B.2 RF Filter Linearity Measurement
Page 201 and 202:
B.2.c IIP2 measurement To measure t
Page 203 and 204:
- 199 -
Page 205 and 206:
C.1 Gyrator-C filtering year Ref. f
Page 207 and 208:
C.2 Gm-C Filtering year Ref. f0 (MH
Page 209 and 210:
year C.3 Rm-C filtering Ref. f0 (MH
Page 211 and 212:
C.5 References C.5.a Gyrator-C filt
Page 213 and 214:
[C.23] J. De Lima and C. Dualibe,
Page 215 and 216:
- 211 -
Page 217 and 218:
this gives: I I I md d1 d 2 = I I =
Page 219 and 220:
D.2 MOS Degenerated Common-Source C
Page 221 and 222:
⎛ I s ⎞ Vout = Vin + U T ln ⎜
Page 223 and 224:
Computing, this leads to: V out + v
Page 225 and 226:
- 221 -
Page 227 and 228:
- 223 -
Page 229 and 230:
FIGURE 54. H3 AND N+5 REJECTIONS AC
Page 231 and 232:
FIGURE 168. PVT VARIATIONS OF THE F
Page 233 and 234:
- 229 -
show all

III. Gm-C Filtering - Epublications - Université de Limoges

Create successful ePaper yourself

Delete template?

Save as template?