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| resources:eval:user-guides:circuits-from-the-lab:cn0534 [27 Oct 2021 06:18] – [Connectors] erbe reyta | resources:eval:user-guides:circuits-from-the-lab:cn0534 [30 Nov 2021 19:49] (current) – updated intro paragraph Brandon Bushey |
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| ===== Overview ===== | ===== Overview ===== |
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| The International Telecommunication Union (ITU) allocates the unlicensed 5.8 GHz industrial, scientific, and medical (ISM) radio frequency band for use worldwide. Advancements in wireless technologies and standards, as well as minimal regulatory compliance requirements, have made this frequency band popular for short range, wireless communication systems. | The International Telecommunication Union (ITU) allocates the un-licensed 5.8 GHz industrial, scientific, and medical (ISM) radio frequency band for use worldwide. Advancements in wireless technologies and standards, as well as minimal regulatory compliance requirements, have made this frequency band popular for short range, wireless communication systems. |
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| The 5.8GHz band is preferred for short-range digital communication applications (such as WiFi) because of the number of channels and the bandwidth available. While the transmission range is shorter than that of the 2.4GHz band, its 150MHz bandwidth accommodates up to 23 non-overlapping WiFi channels. Additional common uses include software defined radio, wireless access points, public safety radio, wireless repeaters, femtocells, and LTE/WiMAX/4G, BTS infrastructure. | The 5.8 GHz band is preferred for short range digital communication applications (such as WiFi) because of the number of channels and the bandwidth available. While the transmission range is short-er than that of the 2.4 GHz band, its 150 MHz bandwidth accommodates up to 23 non-overlapping WiFi channels. Additional com-mon uses include software defined radio, wireless access points, public safety radio, wireless repeaters, femtocells, and Long-Term Evolution (LTE)/Worldwide Interoperability for Microwave Access (WiMAX)/4G, base transceiver station (BTS) infrastructure. |
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| This design provides a high gain, robust overpower monitoring, and protection all in a small footprint, a great addition to any ISM band application where low signal strength or distance may be a complication. | This design provides high gain, robust overpower monitoring, and protection all in a small footprint, which is a great addition to any ISM band application where low signal strength or distance may be a complication. |
| The circuit shown in the figure below is a high performance RF receiver system with 10dB of gain, optimized for operation at a center frequency of 5.8GHz. By keeping the input unfiltered and using a filter to attenuates out-of-band interferers at the amplifier output, the entire system noise figure performance is at 2dB. | |
| The circuit includes a high speed overpower cutoff that protects sensitive downstream equipment connected to the receiver system. The receiver system also automatically turns back on when once the RF power input is now within the acceptable range. | |
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| The RF inputs and outputs are standard SMA connectors, and the entire design is powered from a single micro USB connector. | The circuit is a high performance RF receiver system with +23 dB of gain, optimized for operation at a center frequency of 5.8 GHz. The input is unfiltered, maintaining a noise figure of 2 dB, while a bandpass filter at the output attenuates out-of-band interferers. |
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| | The circuit includes a high speed overpower detector and switch that protects sensitive downstream equipment connected to the receiver system. The receiver system also automatically returns to normal operation when the RF power level drops within the acceptable range. The RF inputs and outputs are standard SMA connectors, and the entire design is powered from a single micro USB connector. |
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| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_system_block_diagram_simplified_v3_.png?900 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_system_block_diagram_simplified_v3_.png?900 |}} |
| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_top_view.png?600 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:eval-cn0534-ebzangle.jpg?400 |}} |
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| ===== General Setup ===== | ===== General Setup ===== |
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| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:test_setup.gif?600 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:test_setup.gif?400 |}} |
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| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:led_power_indicatorv2.gif?400 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_led_power_indicator.png?300 |}} |
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| <note>LED, DS1 from CN0534, will automatically turn on indicating that the CN0534 is powered and operational. If the LED is off, the CN0534 could still be powered properly, but the RF input power into the amplifier might be activating the automatic shutdown, so try to lower the RF input signal by 10dB and see if the LED turns on.</note> | <note>LED, DS1 from CN0534, will automatically turn on indicating that the CN0534 is powered and operational. If the LED is off, the CN0534 could still be powered properly, but the RF input power into the amplifier might be activating the automatic shutdown, so try to lower the RF input signal by 10dB and see if the LED turns on.</note> |
| ===== Connectors ===== | ===== Connectors ===== |
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| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_connector_labels.png?900 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_connector_labels.png?600 |}} |
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| ==== SMA Connectors ==== | ==== SMA Connectors ==== |
| ==== Test Setup ==== | ==== Test Setup ==== |
| === Normal Operation === | === Normal Operation === |
| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:hw_test_setup.jpg |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_and_adalm_pluto_test_setup.png?600 |}} |
| - Connect the RF TX of Pluto SDR to J2 of the [[adi>CN0534|EVAL-CN0534-EBZ Board]] | - Connect the RF TX of Pluto SDR to J2 of the [[adi>CN0534|EVAL-CN0534-EBZ Board]] |
| - Connect J1 of the [[adi>CN0534|EVAL-CN0534-EBZ Board]] to an RF attenuator to protect the RX of Pluto from exceeding its limits. | - Connect J1 of the [[adi>CN0534|EVAL-CN0534-EBZ Board]] to the RF RX of Pluto SDR |
| - Connect P1 (micro USB) connector of the [[adi>CN0534|EVAL-CN0534-EBZ Board]] into a PC USB port or 5V USB charger. | - Connect P1 (micro USB) connector of the [[adi>CN0534|EVAL-CN0534-EBZ Board]] into a PC USB port or 5V USB charger. |
| - The DS1 LED of CN0534 will automatically turn on indicating the board is powered on and is in operation. | - The DS1 LED of CN0534 will automatically turn on indicating the board is powered on and is in operation. |
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| <note important>The ADALM-Pluto can be configured using an IIO Oscilloscope, visit the website on | <note important>The ADALM-Pluto can be configured using an IIO Oscilloscope, visit the website on |
| [[:resources:tools-software:linux-software:iio_oscilloscope|IIO Oscilloscope]] to know more about the tool. | * [[:resources:tools-software:linux-software:iio_oscilloscope|IIO Oscilloscope]] to know more about the tool. |
| | * Optional: an RF attenuator can be connected in between the [[adi>CN0534|EVAL-CN0534-EBZ Board]] RF Output and the RF RX of Pluto SDR to protect the RX of Pluto from exceeding its limits. |
| </note> | </note> |
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| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:connecting_of_iio_osc.jpg?400 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:connecting_of_iio_osc.jpg?400 |}} |
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| === ADALM Pluto Output === | === ADALM Pluto Loop-Back Operation === |
| The plot shown below is the ADALM Pluto output with the RF TX and RX connected directly producing a -16dBFS RF power reading: | |
| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:rf_loop_back_config_only_without_attenuator.jpg?400 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:adalm_pluto_loop_back_test_measurement_setup.png?200 |}} |
| | The plot shown below is the ADALM Pluto output with the RF TX and RX connected directly with transmit power set to -30 dBFS producing a 63.5 dB RSSI RF power input reading: |
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| | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:at_n30_rfoutput_scale_loop_back.png?600 |}} |
| | And with transmit power set to -10 dBFS producing a 43.5 dB RSSI RF power input reading: |
| | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:at_n10_rfoutput_scale_loop_back.png?600 |}} |
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| The plot shown below is the ADALM Pluto output with the RF attenuator connected only producing a -26dBFS RF power reading: | |
| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:rf_loop_back_config_only.jpg?400 |}} | |
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| === Normal Operation === | === Normal Operation === |
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| To configure the the EVAL-CN0534-EBZ with the RF switch CLOSED, replicate configuration on the IIO Oscilloscope Tab as shown below: | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_adalm_pluto_test_measurement_setup.png?400 |}} |
| {{:resources:eval:user-guides:circuits-from-the-lab:cn0534:rf_switch_closed_ad9364_settings_2.png?250|}} | The plot is as shown below with transmit power set to -30 dBFS producing a 41.5 dB RSSI RF power input reading providing a gain of 22dB in reference with the loop back test operation: |
| {{:resources:eval:user-guides:circuits-from-the-lab:cn0534:rf_switch_closed_ad9364_settings_3.png?250|}} | |
| {{:resources:eval:user-guides:circuits-from-the-lab:cn0534:rf_switch_closed_ad9364_settings_1.png?250 |}} | |
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| The plot is as shown below with -14dBFS RF power reading: | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:at_n30_rfoutput_scale.png?600 |}} |
| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:rf_switch_closed.png?400 |}} | |
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| === Auto Shutdown Operation === | === Auto Shutdown Operation === |
| To configure the the EVAL-CN0534-EBZ with the RF switch OPENED, replicate configuration on the IIO Oscilloscope Tab as shown below: | |
| {{:resources:eval:user-guides:circuits-from-the-lab:cn0534:rf_switch_open_ad9364_settings_2.png?250|}} | |
| {{:resources:eval:user-guides:circuits-from-the-lab:cn0534:rf_switch_open_ad9364_settings_3.png?250|}} | |
| {{:resources:eval:user-guides:circuits-from-the-lab:cn0534:rf_switch_open_ad9364_settings_1.png?250 |}} | |
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| The plot is as shown below with -23dBFS RF power reading: | The plot is as shown below with transmit power set to -10 dBFS producing a 40.25 dB RSSI RF power input reading and showing a 20 dB attenuation in reference with the loop back test operation: |
| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:rf_switch_open.png?400 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:at_n10_rfoutput_scale.png?600 |}} |
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| ----------------- | ----------------- |
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| {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_sample_application.png?600 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_sample_application.png?600 |}} |
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| Never do this in normal operation. | Never do this in normal operation. |
| </WRAP> | </WRAP> |
| * [[ADI>CN0534|CN0534 Circuit Note Page]] | * [[ADI>CN0534|CN0534 Circuit Note Page]] |
| * [[ADI>HMC717A|HMC717A Product Page]] | * [[ADI>HMC717A|HMC717A Product Page]] |
| * [[ADI>HMC550|HMC550 Product Page]] | * [[ADI>ADL5904|ADL5405 Product Page]] |
| * [[ADI>ADL5904|ADL5904 Product Page]] | * [[ADI>HMC802A|HMC802A Product Page]] |
| | * [[ADI>LTC6991|LTC6991 Product Page]] |
| | * [[ADI>LT8335|LT8335 Product Page]] |
| * [[ADI>ADM7150|ADM7150 Product Page]] | * [[ADI>ADM7150|ADM7150 Product Page]] |
| * [[ADI>LT3042|LT3042 Product Page]] | * [[ADI>ADP150|ADP150 Product Page]] |
| * [[ADI>LTM8045|LTM8045 Product Page]] | |
| * [[/university/tools/pluto/users/amp|RF Amplifier Considerations]] | * [[/university/tools/pluto/users/amp|RF Amplifier Considerations]] |
| </WRAP> | </WRAP> |
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| <WRAP round 80% download> | <WRAP round 80% download> |
| [[adi>media/en/reference-design-documentation/design-integration-files/CN0534-DesignSupport.zip|EVAL-CN0534-SDPZ Design & Integration Files]] | {{ :resources:eval:user-guides:circuits-from-the-lab:cn0534:cn0534_design_support_package.zip |EVAL-CN0534-SDPZ Design & Integration Files}} |
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| * Schematics | * Schematics |
