アナログSWによるBM（Balanced Modulator)について

1 SW Balanced Modulator) 2006/05/05. JA1 VCW.. PSN .. SW BM . Single Balanced Mixer (SBM .. 1 1 .. AF . Car . M . Mod Car ON/OF . MOD. a M . AF b M. DC . DC=0V Car AF M . 0V. ON (=b OFF). Car . OFF (=b ON). Car SW ON/OFF . ON AF . OFF DC DC 0V .. Excel .. 1 . AF 2Vp-p 1024 8 .. = *4. AF = *8 1024 = * =500kHz 4 2 MHz AF . FFT . Excel = . 2 n 1.. Excel . SBM SBM . 1 1.. (V). 0 0. 1. 11. 21. 31. 41. 51. 61. 71. 81. 91. 101. 111. 121. 1. 79. 157. 235. 313. 391. 469. 547. 625. 703. 781. 859. 937. 1015. -1 -1.. 300. 250 AF. 200. (mV). LSB USB. 150. 100. 50. 0. 1. 40. 79. 118. 157. 196. 235. 274. 313. 352. 391. 430. 469. 508.. AF . AF M SBM .. BPF LPF . 455kHz IFT *2 . 470 . LM7171 . @50 . 51 . 2. Double Balanced Mixer (DBM . DBM . a AF b M. *AF . Car DC. *AF AF 180 ( . DC=0V. SBM 0V DBM . AF 2 .. DBM DBM . 1 1.. 0 0. 1. 63. 125. 187. 249. 311. 373. 435. 497. 559. 621.))

2 683. 745. 807. 869. 931. 993. 1. 11. 21. 31. 41. 51. 61. 71. 81. 91. 101. 111. 121. -1 -1. point . 400. 350 IN a 300. OUT. (mV). 250. 200. 150 b 100. 50. 0.. 1. 32. 63. 94. 125. 156. 187. 218. 249. 280. 311. 342. 373. 404. 435. 466. 497. DC . (=0V). DBM AF . SBM 2 . AF .. DC . 3.. BM .. 0V DC . AF 2Vp-p 100mV Excel . DBM+DC . 400. 350. 300. (mV). 250. 200 1. 150. 100. 50. 0. 1. 41. 81. 121. 161. 201. 241. 281. 321. 361. 401. 441. 481.. DSB 362mV 72mV B 14dB . 50dB DC .. SW b .. SBM DBM 6dB DBM . SSB 10 20 B 40dB . 50 60dB 6dB PSN . BM 40dB . 6dB . 4.. SBM. SBM 447 Hz . PSN I Q . SBM AF DC SW . 4053. 240mVp-p Y(15) LM7171. 1k Y1(1) 10k AFI 47k 10k +5V.. Y0(2). 2k +5V. OUT. 47k 1k 20k + 100 -5V. -5V . 4053. Z(4) 10k . 1k Z1(3). AFQ. SN74HC4053. 10k X X0. VCC Y X1 A BC. Z0(5). +5V. 47k 1k 20k + 100. -5V. Y1 Y0 INH VSS. Z VEE. Z1 Z0. X0,X1 A ,INH =>GND. RFI B(10) VEE=>-5V.

3 +5V +5V. VCC=>+5V. 2 5 12 9. D Q D Q RFQ C(9). 3 6 11 1k C C 8. 74HC74. +5V +5V. / 4 = 447kHz 1/2. 10pF .. PSN . 5 1Vp-p . 5V .. PSN 2 . MS-68B . 5. SBM 447kHz . -50dB . -55dB . 3 -55dB .. AF AF240mVp-p 3 . BM PSN LSB .. SBM 2kHz AF240mVp-p/1980Hz 1kHz/div 100Hz/RBW.. 60dB. SBM 700Hz 2kHz AF120mVp-p/tone 776Hz 1980Hz 1kHz/div 100Hz/RBW.. 60dB. SBM 4053 4pin 1980Hz AF 240mVp-p 50mV/div 100us/div 6. Double Balanced Mixer (DBM . AF SW . 47k . 150mVp-p 4053. Y(15) LM7171. 1k Y1(1) 10k AFI 47k +5V.. 10k Y0(2). 2k OUT. 10k 1k -5V.. +5V 22k 20k 100 + -5V. AFQ . SW (1),(2) AMP . DC .. 1 BM . VR . 1k .. 10uF .. 3 DBM AF . 7. DBM 447kHz . BM PSN . DBM 2kHz AF150mVp-p 1980Hz 1kHz/div 100Hz/RBW.. 60dB. DBM 700Hz 2kHz AF75mVp-p/tone 776Hz 1980Hz 1kHz/div 100Hz/RBW.. 60dB. DBM 4053 4pin 1980Hz AF 150mVp-p 300mVp-p 8.. ON/OFF .. 1. I I. 2 4 1. -I. OUTPUT. Q Q 3. 2. 3. 4.)

4 -Q. I 1 1. Q 2 2. -I 3. -Q 4.. 1. I I. 4. 2 1. -I. OUTPUT. Q Q 3. 3. 4 2. -Q. I. Q. -I. -Q. I,Q,-I,-Q 90 . I -I Q,-Q . 9. DBM .. DBM PSN 2 . I I a b . -I.. a Q Q. b -Q. 90 . I,-I Q,-Q . I Q 90 .. SW .. DBM . a b INPUT OUTPUT. b . a a b . SW SW . 10.. 447kHz . 50dB@455kHz 60dB . 60dB .. PSN AF .. PSN BM . 10pF ( 10dB . AFPSN BM .. DBM AF DC . VR . 22k .. 50dB OK .. 60dB BM PSN, . -65dB .. 9 (?) . 9 IC . 9 447 KkHz 20dB .. 447kHz . 9 447kHz LSB). 11. PSN 90 BM 2 . 1 DBM . PSN . 4 VR . 2 VR . 1 VR . BM SW .. DBM . GND .. 7171. 4052. 4580. 74HC74. 74HC90. Xtal_OSC. LOGIC .. 2191 Blackfin . JA3 DEW . 12.. Excel . B C D E F H I . sample data power point sin data offset data sample data FFT spectrum 4 0 0 -1 0 0. 5 1 -1 0 0. 6 2 1 0 0. 3 1 0 0. 245 -1 0 0. 246 1 0 0. 247 1 0 0. 248 -1 249 -1 0 0. 250 1 0 0. 251 1 0 0. 252 -1 0 0. 253 -1 0 0. 254 1 0 0. 255 1 0 0.

5 256 -1 + 257 -1 0 0. 258 1 0 0. 259 1 0 0. 260 -1 0 0. 261 -1 0 0. 262 1 0 0. 263 1 0 0. 264 -1 256+ 265 -1 0 0. 266 1 0 0. 267 1 0 0. =(C4+D4)*E4 =IMABS(H4). =SIN(2*PI()*8/1024*B4). DBM .. FFT . 1023 . DBM . 0 1023 FFT 2 n . 8 SIN(2*PI()*8/1024*B4) 8 2*PI()*8 . 1024 (/1024) 1 . F offset C4+D4) E4 . H FFT FFT realpart imagina ypart . imagina ypart i . R 2 I 2) IMABS .. 13.