L-Cフィルタの設計について - yacc.co.jp

1 1L-C JA1 VCW LTspice BPF BPF BPF BPF BPF (Fc) 7150kHz 300kHz Bw<10% 20% Chebyshev 2 2 50 Elsie L- C- 2 50 => => => 50 Cj= 1 * 1 Rs* Rp-Rs = 2* *f Cj F Cp Cj Cp Cj =

2 2 *7150000 * 50* 2000-50 = = Cp-Cj = = Rs50 50 CjCp = Cp - Cj 2k 3 1 50 =>2k 2000/50=40 40 = 50 1 7K,10K 1 2 AADE Elsie 4 BPF BPF Elsie Mesh capasitor-coupled bandpass 7 MHz 3 BPF 9 MHz IF => => XL 560 >400 5 BPF 10% 20% 2 BPF Chebyshev

3 20dB VSWR VSWR L C HF 50 400 OM Q Q Q 100 200 7K 50 110 7K Q 20dB BPF Elsie Plot BPF Elsie Elsie Elsie Elsie AADE Spice C Spice 6 Chebyshev BPF TG FRMS

4 Q Q Q Q Q Loss Q C OK 7 Filter Design Program L-C ActiveFilter DigitalFilter L-C Filter 2 Download A B A AADE FILTER DESIGN AND ANALYSIS B Elsie The Windows program for electrical filter design and ladder network analysis C LTspice ?

5 HP A,B Download Download A AADE HomePage Due to illness at this time business is currently suspended . download AADE AADE Filter Design and AnalysisAADE Filter Design and AnalysisAADE Filter Design and AnalysisAADE Filter Design and Analysis HP DL B Elsie Elsie Elsie Elsie Elsie Elsie ----electrical filter design program fromelectrical filter design program fromelectrical filter design program fromelectrical filter design program fromTonneTonneTonneTonneSoftwareSoftware SoftwareSoftware HP DL C LTspice Q

6 A. B. Q A B 8 Elsie HP New Design Get old design Topology => Family => filter k M Schematic Analysis Q ReturnLoss reference Plot F Edit Plot

7 9 DipMeter Dip SG) (SPA TG) NA) C LC Dip C L L = [ 2* *F ^2*C]SPA 50 SG TG50 50 10 LC C Cc C >> Cc Cc C 1% LC Peak C L C 2 Cc 2*Cc L = [ 2* *F ^2*C ]

8 C = C + 2*CcSPA 50 SG TG51 51 1pF50 50 CcCcLC10 Q# BPF BPF BPF Q T50-6 AL 4 nH T^2 T T = 4nH = => 56 1 54 50 1 #1 #2,3 #1 20 #2,3 1 2 2 T50 54 553pF 470pF 82pF 552pF 43pF,46pF 36pF 10pF 39pF 10pF 11 Q:130 Q.

9 180 8 MHz ) GND a 7 MHz 20dB 10 dB ( HP4396A + RefRef122 MHz 100 MHz 10cm*8cm 2 80dB <50 MHz 90dB 2 MHz 100 MHz 15 MHz 2 MHz 22 MHz 15 MHz 12 MHz

10 20 MHz 13 OK Q 180 Q 130 Q 180 200 OK Q 3pF 43pF 3pF Q Q 2 Q Q 80dB 100dB GND 100dB BPF 80dB