高周波電圧計を作る - yacc.co.jp

1 JA1 VCW. Radio Frequency Volt Meter .. RFdet OM . RFVM . RFdet . Rfdet RF . Rfdet . 100M .. RF FET . TL071 . 1000p 10meg RF . 1SS97 10meg 100p .. 1 MHz sine DC 1 MHz sine DC 1 MHz sine DC 1 MHz sine DC . V rms mV DC V rms mV DC V rms mV DC V rms mV DC. 1.. 16*2 LCD . ATMEL ATmega328P . 10bit AD .. RF . FET . RF .. 16*2. 0V 5V(rms). LCD. Atmega 0V +5V 328P.. DC+5V. +5V. +10V (SW .. RF 0V 5V RF DC FET . AD AD +5V FS1023 . RF 5 Vrms 1000 . LMC662C C-MOS Rail-to-rail . +5V 0V 5V . DC-DC 0V +10V 16V 10V 15V .. 5V SW RFVM . 5V .. +5V +10V AD . AC SW IC . BASCOM-AVR . 4095byte . 4096byte .. 2. RF 5M . (SMA) .. 0V 700mV .. 8 9 . A . B . ( .. A B.. ( .. 200mV .. LCD . RF . 3. RFVM . RFVM RF Voltage Meter .. 0V 5V 5V . FS 5mV 100mV 7mV. AD 1 . pF / 1 MHz VF 8 9 . X XXX V.. FS 1 . RF 5 Vrms.)))

2 5 Vrms .. 5 Vrms 1 MHz . RFVM JP1 JP2 JP on . JP1, JP2 . RF . RFVM . => 5 Vrms 50 => 27dBm . => 5 Vrms => 21dBm . 5 Vrms .. => 50 => . => => .. 2 JP2 .. 4.. V) V) % (V) mV (%). 99 . 14 25 1 61 142 2 303 642 3 5 1000 4 5 .. RFVM. 1 MHz SG. RF . HP-3325A.. M-170 NF). RF .. 0V 5 Vrms 10V .. -2mV 25 10 20mV . 100mV 200mV 7mV .. 1mV . RF . rms .. ATmega328P . IO .. 5.. 50 dBm .. + .. RF .. RF .. 16 mm . 1SS97 RF detector probe . Input capacitance pF / 1 MHz dc Impedance . Cap 102 // 1SS97 // 10 M . 6.. A D 1023 1000 .. 100mV 9 . 1000 .. 20 .. Common Mode 5V SW . DC-DC Conv. +10V . 5V SW . 5V .. LMC662 . Rail-to-Rail . 0V +10V Op-amp offset 100mV .. 100mV VF . 7. VF . RF signal level vs 1SS97 DET Voltage With dc Amp. NJM 072D. Input Level NF M-170 . dc Output voltage OP Amp pin-6 HP 34401A.

3 Freq. = MHz / Sin DC . AD. DET = 1SS97 / 10 M / 10 M GND / 100 pF GND // 071 pin-3 . probe No1 probe No1 . fixed point 40,000 . VF . 1 MHz sine DC mV scaling *10 *10 Y=AX+B => (%) . V rms mV DC count A B . 0 0 0 0 0 0 0 #DIV/0! 0. 100 9 90 44,444 0 100 0 0 1. 120 12 120 119 1 1. 140 15 150 26,666 1,600,060 139 1 1 2. 160 18 180 158 2 1. 180 21 210 176 4 2. 200 25 250 24,000 2,000,000 200 0 0 3. 220 28 280 216 4 2. 240 32 320 238 2 1. 260 36 360 261 -1 0. 280 39 390 277 3 1. 300 43 430 299 1 0. 320 47 470 322 -2 -1. 340 50 500 338 2 1. 360 54 540 361 -1 0. 380 57 570 377 3 1. 400 61 610 22,222 2,444,500 399 1 0 4. 500 80 800 495 5 1. 600 100 1,000 595 5 1. 700 120 1,200 695 5 1. 800 141 1,410 20,000 3,800,000 800 0 0 5. 900 161 1,610 900 0 0. 1,000 181 1,810 1,000 0 0. 1,200 221 2,210 1,200 0 0.

4 1,400 260 2,600 1,395 5 0. 1,600 301 3,010 20,000 3,800,000 1,600 0 0 6. 1,800 342 3,420 1,798 2 0. 2,000 384 3,840 2,002 -2 0. 2,200 426 4,260 2,206 -6 0. 2,400 466 4,660 2,399 1 0. 2,600 508 5,080 2,603 -3 0. 2,800 550 5,500 2,807 -7 0. 3,000 591 5,910 3,005 -5 0. 3,200 631 6,310 19,393 5,627,070 3,199 1 0 7. 3,400 672 6,720 3,399 1 0. 3,600 710 7,100 3,585 15 0. 3,800 751 7,510 3,785 15 0. 4,000 792 7,920 3,985 15 0. 4,200 834 8,340 4,190 10 0. 4,400 875 8,750 4,390 10 0. 4,600 917 9,170 4,595 5 0. 4,800 958 9,580 4,795 5 0. 5,000 1,000 10,000 19,512 4,879,280 4,999 1 0 8. DC 5 VFS 1mV . *10 . Y=AX+B A,B . CPU .. DC VR . 8. VF 1 . VF . 1 MHz sine DC mV scaling => . V rms mV DC count (mV) mV (%). 0 0 0 0 87 -87 #DIV/0! 100 9 131 -31 -31. 120 12 146 -26 -22. 140 15 161 -21 -15. 160 18 176 -16 -10.

5 180 21 191 -11 -6. 200 25 210 -10 -5. 220 28 225 -5 -2. 240 32 245 -5 -2. 260 36 265 -5 -2. 280 39 280 0 0. 300 43 299 1 0. 320 47 319 1 0. 340 50 334 6 2. 360 54 354 6 2. 380 57 368 12 3. 400 61 388 12 3. 500 80 482 18 4. 600 100 581 19 3. 700 120 679 21 3. 800 141 783 17 2. 900 161 882 18 2. 1,000 181 981 19 2. 1,200 221 1,178 22 2. 1,400 260 1,371 29 2. 1,600 301 1,573 27 2. 1,800 342 1,775 25 1. 2,000 384 1,983 17 1. 2,200 426 2,190 10 0. 2,400 466 2,387 13 1. 2,600 508 2,595 5 0. 2,800 550 2,802 -2 0. 3,000 591 3,005 -5 0. 3,200 631 3,202 -2 0. 3,400 672 3,404 -4 0. 3,600 710 3,592 8 0. 3,800 751 3,794 6 0. 4,000 792 3,997 3 0. 4,200 834 4,204 -4 0. 4,400 875 4,407 -7 0. 4,600 917 4,614 -14 0. 4,800 958 4,816 -16 0. 5,000 1,000 5,024 -24 0. Y=AX+B. A= B= DC 5 VFS 1mV . 200mV.

6 9.. Data => . RF DC RF . y = Ax+B x A/D y . A B . A, B .. y2 .. y1 , y2 y x1 , x2 y1.. B. A = X Y = y2-y1 x2-x1 . Offset B . y1 = x1*A+B x1 x x2. B = y1-x1*A.. A,B x . y y = x*A+B .. word 0 65535. long -2,147,483,648 2,147,483,647.. 4kbyte . 10.. RFVM .. 9 1 MHz . Vrms . RMS . AC 1 MHz .. RFVM. 1 MHz SG. RF . HP-3325A.. M-170 NF).. JP1 JP2 . JP1,2 . JP . Cal V XX mV XX 1 MHz Vrms . SG RF DC . AD . accept SW S2 1 1 2 XX . 9 8 9 . 9 ROM save SW S1 . 1 1 ROM save off .. save .. OK JP1 . JP2 . 11.. on . JP1. Jumper . on . Jumper . JP2. ROM . S1. SW 1 1 .. SW. S2 SW accept .. BASCOM AVR EEROM RAM .. RF . RF . DC . EEROM .. 12.. RF .. 13.