I have summarized the experimental results that may be useful for you in past tweets.
RF amplifiers for small signal
- Negative feedback wide band amplifier
tools for designing negative feedback wide band amplifier (uploaded on 20/08/30)
RF power amplifiers
- Wide band class-A power amplifier
7-28MHz Output 5W (uploaded on 21/05/21) - Switching-type wide band power amplifier
3-30MHz Output 6W (uploaded on 20/08/18) - Class-A power amplifier for the 144MHz band
145MHz Output 5W (uploaded on 20/08/18) - Class-B push-pull power amplifier
3-30MHz Output 5-10W (uploaded on 23/07/01)
Oscillator
- 144MHz PLL synthesizer
A PLL synthesizer for 2m band (uploaded on 22/01/28)
Modulators and demodulators
- PSN方式SSB変調回路(uPC8105GR)
直交変調IC uPC8105GRを用いたSSB変調回路 (23/07/05更新) - PSN SSB modulator
A SSB modulator with low signal distortion (uploaded on 21/05/15) - Ratio detector
A demodulator for FM signal (uploaded on 20/08/18)
Filters
- Tools for designing Butterworth filter
(uploaded on 20/08/22) - Tools for designing Chebyshev filter (ripple 0.1dB)
(uploaded on 20/08/22) - Tools for designing Chebyshev filter (ripple 0.5dB)
(uploaded on 20/08/22) - Tools for designing crystal ladder filters【links】
(uploaded on 20/08/21)
Digital signal proccesing
- Digital signal proccesing with a STM32 Nucleo board (1)
setting for ADC and DAC(uploaded on 21/05/04) - Digital signal proccesing with a STM32 Nucleo board (2)
setting for CMSIS-DSP(uploaded on 21/05/05) - Digital signal proccesing with a STM32 Nucleo board (3)
generation of AF-PSN signal(uploaded on 21/05/06)
FPGA
- Introduction of a FPGA board Cmod S7 (1)
(uploaded on 22/09/15) - Introduction of a FPGA board Cmod S7 (2)
(uploaded on 22/09/15) - Introduction of a FPGA board Cmod S7 (3)
(uploaded on 22/09/16) - Introduction of a FPGA board Cmod S7 (4)
(uploaded on 22/09/16) - Introduction of a FPGA board Cmod S7 (5)
(uploaded on 22/09/17) - Introduction of a FPGA board Cmod S7 (6)
(uploaded on 22/09/19) - Direct sampling AM receiver with FPGA
(uploaded on 23/08/20)