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256 Bandpass Signaling Principles and Circuits Chap. 4 TABLE 4–2 FILTER CONSTRUCTION TECHNIQUES Type of Construction Description of Elements or Filter Center Frequency Range Unloaded Q (Typical) Filter Application a LC (passive) dc–300 MHz 100 Audio, video, IF, and RF – Active and dc–500 kHz 200 b Audio + Switched Capacitor Crystal Quartz 1 kHz–100 MHz 100,000 IF crystal Transducers Mechanical 50–500 kHz 1,000 IF Rod Disk Ceramic disk Ceramic 10 kHz–10.7 MHz 1,000 IF Electrodes One section Fingers Surface acoustic waves (SAW) 10–800 MHz c IF and RF Piezoelectric substrate Finger overlap region Transmission line /4 UHF and microwave 1,000 RF Cavity Microwave 10,000 RF a IF, intermediate frequency; RF, radio frequency. (See Sec. 4–16.) b Bandpass Q’s. c Depends on design: N = f 0 B, where N is the number of sections, f 0 is the center frequency, and B is the bandwidth. Loaded Q’s of 18,000 have been achieved.
- Page 510: Problems 231 How does the PSD for t
- Page 514: Problems 233 (a) Using a PC, calcul
- Page 518: Problems 235 and w 3 (t) = -(t - 1)
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- Page 526: Sec. 4-1 Complex Envelope Represent
- Page 530: Sec. 4-3 Spectrum of Bandpass Signa
- Page 534: AM A c |1+m(t2| e 0, m (t) 7-1 L c
- Page 538: Sec. 4-4 Evaluation of Power 245 Re
- Page 542: Sec. 4-4 Evaluation of Power 247 wh
- Page 546: Sec. 4-5 Bandpass Filtering and Lin
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- Page 554: Sec. 4-6 Bandpass Sampling Theorem
- Page 558: Sec. 4-8 Classification of Filters
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256<br />
Bandpass Signaling Principles and Circuits Chap. 4<br />
TABLE 4–2<br />
FILTER CONSTRUCTION TECHNIQUES<br />
Type of Construction<br />
Description of<br />
Elements or Filter<br />
Center Frequency<br />
Range<br />
Unloaded Q<br />
(Typical)<br />
Filter<br />
Application a<br />
LC (passive) dc–300 MHz 100 Audio, video,<br />
IF, and RF<br />
–<br />
Active and<br />
dc–500 kHz 200 b Audio<br />
+<br />
Switched Capacitor<br />
Crystal Quartz 1 kHz–100 MHz 100,000 IF<br />
crystal<br />
Transducers<br />
Mechanical 50–500 kHz 1,000 IF<br />
Rod Disk<br />
Ceramic disk<br />
Ceramic 10 kHz–10.7 MHz 1,000 IF<br />
Electrodes<br />
One section<br />
Fingers<br />
Surface acoustic<br />
waves (SAW)<br />
10–800 MHz<br />
c<br />
IF and RF<br />
Piezoelectric<br />
substrate<br />
Finger<br />
overlap region<br />
Transmission line<br />
/4<br />
UHF and<br />
microwave<br />
1,000 RF<br />
Cavity Microwave 10,000 RF<br />
a IF, intermediate frequency; RF, radio frequency. (See Sec. 4–16.)<br />
b Bandpass Q’s.<br />
c Depends on design: N = f 0 B, where N is the number of sections, f 0 is the center frequency, and B is the bandwidth. Loaded<br />
Q’s of 18,000 have been achieved.
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