https://hamradiotransceiver.biz Mon, 06 Apr 2026 23:23:57 +0000 en-CA hourly 1 https://wordpress.org/?v=4.1.1 https://hamradiotransceiver.biz/2021/07/adf4355-250mhz-6-8g-sweep-rf-signal-generator-vco-microwave-frequency/ https://hamradiotransceiver.biz/2021/07/adf4355-250mhz-6-8g-sweep-rf-signal-generator-vco-microwave-frequency/#comments Thu, 29 Jul 2021 07:02:13 +0000 http://hamradiotransceiver.biz/2021/07/adf4355-250mhz-6-8g-sweep-rf-signal-generator-vco-microwave-frequency/ read more]]>






1, ADF4355 module is a senior engineer effort to build, full reference to the official version of the design; PCB appearance, layout and design reasonable, stress materials. 2, the output frequency range: 54M-6.8G. 3, power supply: 5V power supply, can be directly powered by USB. 4, color display, touch screen operation, you can achieve point frequency, sweep. Third, the module application. Wireless infrastructure (WCDMA, TD-SCDMA, WiMAX, GSM, PCS, DCS, DECT). Test equipment / instrumentation. When used with an external loop filter and an external reference frequency, the ADF5355 implements a fractional-N or integer-N phase-locked loop (PLL) frequency synthesizer. A range of frequency dividers allows operation from 54 MHz to 6,800 MHz. The ADF5355 has an integrated VCO with a fundamental output frequency in the range of 3400 MHz to 6800 MHz. In addition, the VCO frequency can be divided by 1, 2, 4, 8, 16, 32 or 64, so users can generate RF output frequencies as low as 54 MHz. The RF output stage can be muted for applications requiring isolation. The mute function can be controlled either by a pin or by software. All on-chip registers are controlled through a simple three-wire interface. The ADF5355 operates from a 3.15 V to 3.45 V analog and digital supply with a charge pump and VCO supply from 4.75 V to 5.25 V. In addition, ADF5355 also built-in hardware and software power-saving mode. RF output frequency range: 54 MHz to 6,800 MHz. Fractional-N frequency synthesizer and integer-N frequency synthesizer. High resolution 38 bit modulus. Low Phase Noise Voltage Controlled Oscillator (VCO). Programmable 1/2/4/8/16/32/64 frequency output. Analog and digital power supplies: 3.3 V. Charge Pump and VCO Power Supply: 5.0 V typ. Logic Compatibility: 1.8 V. Programmable dual-modulus prescaler: 4/5 or 8/9. RF output mute function. Analog and digital lock detections. 1 x ADF4355 250Mhz-6.8G Sweep RF Signal Generator VCO Microwave Frequency. After you have paid. All the items will be dispatched within. Items will arrive in. The arrival time depends on some factors and different areas. Welcome to our store! We are a professional worldwide wholesale company, with our own factory located in China. High product quality, reasonable prices, excellent customer service and a reliable credit standing is our tenet. Please come back soon and visit us again! We are looking forward to establishing cooperative relationships with you. Thank you for shopping with us! However, as every sale is final, we appreciate your reconsideration for any return. Thank you again for your business. Any returning, pls inform us first and send back with return ID (given by LD customer service). The item “ADF4355 250Mhz-6.8G Sweep RF Signal Generator VCO Microwave Frequency” is in sale since Tuesday, November 22, 2016. This item is in the category “Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Transceivers”. The seller is “2012moon816″ and is located in Guangzhou . This item can be shipped worldwide.

• Type: Antenna
• Model: ADF4355
• Country/Region of Manufacture: China
• MPN: Does not apply
• Brand: Unbranded/Generic

]]> https://hamradiotransceiver.biz/2021/07/adf4355-250mhz-6-8g-sweep-rf-signal-generator-vco-microwave-frequency/feed/ 0 https://hamradiotransceiver.biz/2021/04/dds-ad9910-arduino-shield-600mhz-1-5gsps-rf-signal-generator-low-spurs-harmonics/ https://hamradiotransceiver.biz/2021/04/dds-ad9910-arduino-shield-600mhz-1-5gsps-rf-signal-generator-low-spurs-harmonics/#comments Sun, 18 Apr 2021 17:27:36 +0000 http://hamradiotransceiver.biz/2021/04/dds-ad9910-arduino-shield-600mhz-1-5gsps-rf-signal-generator-low-spurs-harmonics/ read more]]>











DDS AD9910 Arduino Shield Signal Generator. P to sine wave output 600Mhz. Attention needs a forced cooling. DDS AD9910 Arduino Shield RF Signal Generator. DDS (Direct Digital Synthesis) Analog Devices AD9910 Arduino Shield by GRA & AFCH. Easy connection to Arduino MEGA 2560 without additional wires and converters. All functions of the DDS AD9910 are brought to the contacts of the Arduino MEGA. With this you can fully reveal all the capabilities of the DDS AD9910 Shield. Opensource Software and Scheme available on our GitHub repository: afch/DDS-AD9910-Arduino-Shield. Video review on our YouTube channel: youtube/_MUsm0cAD4. We recommend to use RF Amplifier with our DDS Shield Boards (RF Amplifier 8-2000 MHz, GAIN = 20 dB, P = +20 dBm MMIC MRFA89 SOT-89). Low harmonics no more than -60dBc. An output RF transformer is used for the correct operation of the current mirror. Signal lines TOP and Bottom, inner layers Ground and Power. Low Noise LDO Stabilizers. Separate power supply for all analog and digital lines (1.8V and 3.3V), 5 pcs IC voltage stabilizers are used. Additionally, there is an RF Ferrite bead interchange. High-speed decoupling Level converter and TTL 5V matching. Types of possible reference oscillators (choose one of them in the selector). XO Crystal 25 MHz 20 ppm internal oscillator with PLL at 1 GHz. TCXO 10 MHz 1 ppm external oscillator PLL at 1 GHz. EGEN external generator up to 1.5 GHz. (To connect an external clock source of up to 1.5 GHz, this source is NOT INCLUDED). OCXO Oven Controlled Crystal Oscillators deliver the ultimate piezo electric performance with stabilities down to less than ±1 ppm. Additionally balancing transformer is used for TCXO, EGEN and OCXO options. Easy to connect OLED display. Control buttons for control via the program menu. The software allows you to select and configure the frequency of the clock generator through the user menu (without the need to recompile the program). Any settings can be stored in non-volatile EEPROM memory (located at Arduino Mega). Basic settings are applied and saved automatically. This shield support overclocking the AD9910 core to 1.5 GHz. DDS AD9910 Shield has ability to generate a signal up to 600 MHz with a core overclocking up to 1.5 GHz. (to suppress harmonics, it is recommended to overclock the AD9910 for frequencies above 400 MHz). Has ability to increase output power by +4 dBm when DAC Current HI is activated. Since the intrinsic phase noise of DDS is obviously less than that of PLL generators, the final value is highly dependent on the clock source. In order to achieve the values stated in the datasheet for AD9910, we strictly adhered to all recommendations from Analog Devices. When designing our DDS AD9910 Arduino Shield we have followed these requirements. PCB layout in 4 layers, separate power supply of all 4 power lines (3.3 V digital, 3.3 V analog, 1.8 V digital, and 1.8 V analog). Figure 16 shows the noise level when using the built-in PLL in DDS. The PLL multiplies the frequency of a 50 MHz generator by 20 times. We use a similar frequency 40 MHz (x25 Multiplier) or 50 MHz (x20 Multiplier) from TCXO which gives even more stability. Figure 15 shows the noise level when using an external reference clock 1 GHz, with the PLL off. DDS AD9910 Arduino Shield Phase Noise. That is, when using an external clock phase noise by 15 dBc better (lower). That is, when using an external clock phase noise by 34 dBc better (lower). Conclusion: when using external clocking, you can get much lower phase noise than using the built-in PLL. But do not forget that in order to achieve such results, increased requirements are put forward to the external generator. DDS AD9910 Main Menu. DDS AD9910 Core Clock Menu. DDS AD9910 FM Modulation Menu. If you have ANY questions, PLEASE ASK US. 100 kHz – 420 MHz (600 MHz) in 1 Hz step. +0 dBm (+4) to -84 dBm (on 50 Ohm load). Output level up to. 1 Vpeak-to-peak (at +4 dBm). USB or External Power Supply 7V DC 1A. 10 Hz to 100 kHz in 1 Hz step. 0% to 100% in 1% increments. Modulation Frequency for FM (Frequency Modulation). FM modulation deviation frequency. 0 Hz to 100 kHz in 1 Hz step. Reference clock sources (on choice). XO-Crystal Oscillator, TCXO 1ppm, OCXO 0.1ppm, Crystek, or External Oscillator up to 1.5 Ghz. 53.26 x 102mm. When overclocking the core to 1.5 GHz When the “DAC Current HI” function is activated. DDS AD9910 Arduino Shield Spectrograms. GRA & AFCH DDS AD9910 Shield VS DDS Board from China Spectrograms Comparison. Spectrum Analyzer Screenshots (200 MHz). Spectrum Analyzer Screenshots (350 MHz). Spectrum Analyzer Screenshots (100 MHz). Spectrum Analyzer Screenshots (10 MHz). GRA & AFCH DDS AD9910 Shield Spectrograms. 500 MHz, DAC Current set to HI. 600 MHz, DAC Current set to HI. FM (Frequency Modulation) Frequency: 1 kHz Deviation: 3 kHz. DDS AD9910 Arduino Shield Thermal images. Arduino MEGA to Shield AD9910 Pinout Scheme. DDS Arduino Shield AD9910 RF Signal Generator Overview. Please refer to full video Overview of our DDS AD9910 Shield RF Signal Generator on our YouTube channel:’GRA & AFCH. DDS Arduino Shield AD9910 RF Signal Generator. The item “DDS AD9910 Arduino Shield 600MHz 1.5GSPS RF Signal Generator Low Spurs Harmonics” is in sale since Tuesday, October 29, 2019. This item is in the category “Business & Industrial\Test, Measurement & Inspection\Signal Sources & Conditioning\Signal Generators”. The seller is “gra_and_afch_2″ and is located in Dnipropetrovsk. This item can be shipped worldwide.

• Signal Generator Type: RF Signal Generator
• Modified Item: No
• Country/Region of Manufacture: Ukraine
• MPN: DDS9910
• Custom Bundle: No
• Brand: GRA & AFCH
• Frequency Range: 600Mhz

]]> https://hamradiotransceiver.biz/2021/04/dds-ad9910-arduino-shield-600mhz-1-5gsps-rf-signal-generator-low-spurs-harmonics/feed/ 0 https://hamradiotransceiver.biz/2021/03/dds-ad9910-arduino-shield-600mhz-1-5gsps-rf-signal-generator-free-shipping/ https://hamradiotransceiver.biz/2021/03/dds-ad9910-arduino-shield-600mhz-1-5gsps-rf-signal-generator-free-shipping/#comments Sat, 13 Mar 2021 23:53:01 +0000 http://hamradiotransceiver.biz/2021/03/dds-ad9910-arduino-shield-600mhz-1-5gsps-rf-signal-generator-free-shipping/ read more]]>










DDS AD9910 Arduino Shield Signal Generator. P to sine wave output 600Mhz. Attention needs a forced cooling. DDS AD9910 Arduino Shield RF Signal Generator. DDS (Direct Digital Synthesis) Analog Devices AD9910 Arduino Shield by GRA & AFCH. Easy connection to Arduino MEGA 2560 without additional wires and converters. All functions of the DDS AD9910 are brought to the contacts of the Arduino MEGA. With this you can fully reveal all the capabilities of the DDS AD9910 Shield. Opensource Software and Scheme available on our GitHub repository: afch/DDS-AD9910-Arduino-Shield. Video review on our YouTube channel: youtube/_MUsm0cAD4. We recommend to use RF Amplifier with our DDS Shield Boards (RF Amplifier 8-2000 MHz, GAIN = 20 dB, P = +20 dBm MMIC MRFA89 SOT-89). Low harmonics no more than -60dBc. An output RF transformer is used for the correct operation of the current mirror. Signal lines TOP and Bottom, inner layers Ground and Power. Low Noise LDO Stabilizers. Separate power supply for all analog and digital lines (1.8V and 3.3V), 5 pcs IC voltage stabilizers are used. Additionally, there is an RF Ferrite bead interchange. High-speed decoupling Level converter and TTL 5V matching. Types of possible reference oscillators (choose one of them in the selector). XO Crystal 25 MHz 20 ppm internal oscillator with PLL at 1 GHz. TCXO 10 MHz 1 ppm external oscillator PLL at 1 GHz. EGEN external generator up to 1.5 GHz. (To connect an external clock source of up to 1.5 GHz, this source is NOT INCLUDED). OCXO Oven Controlled Crystal Oscillators deliver the ultimate piezo electric performance with stabilities down to less than ±1 ppm. Additionally balancing transformer is used for TCXO, EGEN and OCXO options. Easy to connect OLED display. Control buttons for control via the program menu. The software allows you to select and configure the frequency of the clock generator through the user menu (without the need to recompile the program). Any settings can be stored in non-volatile EEPROM memory (located at Arduino Mega). Basic settings are applied and saved automatically. This shield support overclocking the AD9910 core to 1.5 GHz. DDS AD9910 Shield has ability to generate a signal up to 600 MHz with a core overclocking up to 1.5 GHz. (to suppress harmonics, it is recommended to overclock the AD9910 for frequencies above 400 MHz). Has ability to increase output power by +4 dBm when DAC Current HI is activated. Since the intrinsic phase noise of DDS is obviously less than that of PLL generators, the final value is highly dependent on the clock source. In order to achieve the values stated in the datasheet for AD9910, we strictly adhered to all recommendations from Analog Devices. When designing our DDS AD9910 Arduino Shield we have followed these requirements. PCB layout in 4 layers, separate power supply of all 4 power lines (3.3 V digital, 3.3 V analog, 1.8 V digital, and 1.8 V analog). Figure 16 shows the noise level when using the built-in PLL in DDS. The PLL multiplies the frequency of a 50 MHz generator by 20 times. We use a similar frequency 40 MHz (x25 Multiplier) or 50 MHz (x20 Multiplier) from TCXO which gives even more stability. Figure 15 shows the noise level when using an external reference clock 1 GHz, with the PLL off. DDS AD9910 Arduino Shield Phase Noise. That is, when using an external clock phase noise by 15 dBc better (lower). That is, when using an external clock phase noise by 34 dBc better (lower). Conclusion: when using external clocking, you can get much lower phase noise than using the built-in PLL. But do not forget that in order to achieve such results, increased requirements are put forward to the external generator. DDS AD9910 Main Menu. DDS AD9910 Core Clock Menu. DDS AD9910 FM Modulation Menu. If you have ANY questions, PLEASE ASK US. 100 kHz – 420 MHz (600 MHz) in 1 Hz step. +0 dBm (+4) to -84 dBm (on 50 Ohm load). Output level up to. 1 Vpeak-to-peak (at +4 dBm). USB or External Power Supply 7V DC 1A. 10 Hz to 100 kHz in 1 Hz step. 0% to 100% in 1% increments. Modulation Frequency for FM (Frequency Modulation). FM modulation deviation frequency. 0 Hz to 100 kHz in 1 Hz step. Reference clock sources (on choice). XO-Crystal Oscillator, TCXO 1ppm, OCXO 0.1ppm, Crystek, or External Oscillator up to 1.5 Ghz. 53.26 x 102mm. When overclocking the core to 1.5 GHz When the “DAC Current HI” function is activated. DDS AD9910 Arduino Shield Spectrograms. GRA & AFCH DDS AD9910 Shield VS DDS Board from China Spectrograms Comparison. Spectrum Analyzer Screenshots (200 MHz). Spectrum Analyzer Screenshots (350 MHz). Spectrum Analyzer Screenshots (100 MHz). Spectrum Analyzer Screenshots (10 MHz). GRA & AFCH DDS AD9910 Shield Spectrograms. 500 MHz, DAC Current set to HI. 600 MHz, DAC Current set to HI. FM (Frequency Modulation) Frequency: 1 kHz Deviation: 3 kHz. DDS AD9910 Arduino Shield Thermal images. Arduino MEGA to Shield AD9910 Pinout Scheme. DDS Arduino Shield AD9910 RF Signal Generator Overview. Please refer to full video Overview of our DDS AD9910 Shield RF Signal Generator on our YouTube channel:’GRA & AFCH. DDS Arduino Shield AD9910 RF Signal Generator. The item “DDS AD9910 Arduino Shield 600MHz 1.5GSPS RF Signal Generator FREE SHIPPING” is in sale since Thursday, September 24, 2020. This item is in the category “Business & Industrial\Test, Measurement & Inspection\Signal Sources & Conditioning\Signal Generators”. The seller is “gra_and_afch_2″ and is located in Dnipropetrovsk. This item can be shipped worldwide.

• Signal Generator Type: RF Signal Generator
• Modified Item: No
• Country/Region of Manufacture: Ukraine
• MPN: DDS9910
• Custom Bundle: No
• Brand: GRA & AFCH
• Frequency Range: 600Mhz

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