CC1310的发送信号强度比较弱

TI工程师您好：

我自己做一版电路，天线选择的PCB天线，在配置CC1310时，频段设置为433MHz，发送功率选择了15dBm，通信速率选择了100kbps，发现信号发出的强度比较弱。具体配置如下，请问这个是什么问题啊。

// CMD_PROP_RADIO_DIV_SETUP
rfc_CMD_PROP_RADIO_DIV_SETUP_t RF_cmdPropRadioDivSetup =
{
.commandNo = 0x3807,
.status = 0x0000,
.pNextOp = 0, // INSERT APPLICABLE POINTER: (uint8_t*)&xxx
.startTime = 0x00000000,
.startTrigger.triggerType = 0x0,
.startTrigger.bEnaCmd = 0x0,
.startTrigger.triggerNo = 0x0,
.startTrigger.pastTrig = 0x0,
.condition.rule = 0x1,
.condition.nSkip = 0x0,
.modulation.modType = 0x1,
//100kbps
.modulation.deviation = 0xBC,
.symbolRate.preScale = 0xF,
.symbolRate.rateWord = 0x10000,
.rxBw = 0x28,

.preamConf.nPreamBytes = 0x4,
.preamConf.preamMode = 0x0,
.formatConf.nSwBits = 0x20,
.formatConf.bBitReversal = 0x0,
.formatConf.bMsbFirst = 0x1,
.formatConf.fecMode = 0x0,
.formatConf.whitenMode = 0x0,
.config.frontEndMode = 0x0,
.config.biasMode = 0x1,
.config.analogCfgMode = 0x0,
.config.bNoFsPowerUp = 0x0,
/* .txPower = 0xA73F,
.pRegOverride = pOverrides,
.centerFreq = 0x0364,
.intFreq = 0x8000,
.loDivider = 0x05,
*/
.txPower = 0x003F,//15dbm
//.txPower = 0x6A0F, // 13.5dbM
.pRegOverride = pOverrides,
.centerFreq = 0x01B1,//0x0364,
.intFreq = 0x8000,
.loDivider = 0x0A,//0x05,
};

// CMD_FS
rfc_CMD_FS_t RF_cmdFs =
{
.commandNo = 0x0803,
.status = 0x0000,
.pNextOp = 0, // INSERT APPLICABLE POINTER: (uint8_t*)&xxx
.startTime = 0x00000000,
.startTrigger.triggerType = 0x0,
.startTrigger.bEnaCmd = 0x0,
.startTrigger.triggerNo = 0x0,
.startTrigger.pastTrig = 0x0,
.condition.rule = 0x1,
.condition.nSkip = 0x0,
/* .frequency = 0x0364,
.fractFreq = 0x0000,*/
.frequency = 0x01B1,//0x0364,
.fractFreq = 0x8000,//0x0000,
.synthConf.bTxMode = 0x0,
.synthConf.refFreq = 0x0,
.__dummy0 = 0x00,
.__dummy1 = 0x00,
.__dummy2 = 0x00,
.__dummy3 = 0x0000,
};

// CMD_PROP_TX
rfc_CMD_PROP_TX_t RF_cmdPropTx =
{
.commandNo = 0x3801,
.status = 0x0000,
.pNextOp = 0, // INSERT APPLICABLE POINTER: (uint8_t*)&xxx
.startTime = 0x00000000,
.startTrigger.triggerType = 0x0,
.startTrigger.bEnaCmd = 0x0,
.startTrigger.triggerNo = 0x0,
.startTrigger.pastTrig = 0x0,
.condition.rule = 0x1,
.condition.nSkip = 0x0,
.pktConf.bFsOff = 0x0,
.pktConf.bUseCrc = 0x1,
.pktConf.bVarLen = 0x1,
.pktLen = 0x14, // SET APPLICATION PAYLOAD LENGTH
.syncWord = 0xd391d391,
.pPkt = 0, // INSERT APPLICABLE POINTER: (uint8_t*)&xxx
};

// CMD_PROP_RX
rfc_CMD_PROP_RX_t RF_cmdPropRx =
{
.commandNo = 0x3802,
.status = 0x0000,
.pNextOp = 0, // INSERT APPLICABLE POINTER: (uint8_t*)&xxx
.startTime = 0x00000000,
.startTrigger.triggerType = 0x0,
.startTrigger.bEnaCmd = 0x0,
.startTrigger.triggerNo = 0x0,
.startTrigger.pastTrig = 0x0,
.condition.rule = 0x1,
.condition.nSkip = 0x0,
.pktConf.bFsOff = 0x0,
.pktConf.bRepeatOk = 0x0,
.pktConf.bRepeatNok = 0x0,
.pktConf.bUseCrc = 0x1,
.pktConf.bVarLen = 0x1,
.pktConf.bChkAddress = 0x0,
.pktConf.endType = 0x0,
.pktConf.filterOp = 0x0,
.rxConf.bAutoFlushIgnored = 0x0,
.rxConf.bAutoFlushCrcErr = 0x0,
.rxConf.bIncludeHdr = 0x1,
.rxConf.bIncludeCrc = 0x0,
.rxConf.bAppendRssi = 0x0,
.rxConf.bAppendTimestamp = 0x0,
.rxConf.bAppendStatus = 0x1,
.syncWord = 0xd391d391,
.maxPktLen = 0x80, // MAKE SURE DATA ENTRY IS LARGE ENOUGH
.address0 = 0xAA,
.address1 = 0xBB,
.endTrigger.triggerType = 0x1,
.endTrigger.bEnaCmd = 0x0,
.endTrigger.triggerNo = 0x0,
.endTrigger.pastTrig = 0x0,
.endTime = 0x00000000,
.pQueue = 0, // INSERT APPLICABLE POINTER: (dataQueue_t*)&xxx
.pOutput = 0, // INSERT APPLICABLE POINTER: (uint8_t*)&xxx
};

// CMD_TX_TEST
rfc_CMD_TX_TEST_t RF_cmdTxTest =
{
.commandNo = 0x0808,
.status = 0x0000,
.pNextOp = 0, // INSERT APPLICABLE POINTER: (uint8_t*)&xxx
.startTime = 0x00000000,
.startTrigger.triggerType = 0x0,
.startTrigger.bEnaCmd = 0x0,
.startTrigger.triggerNo = 0x0,
.startTrigger.pastTrig = 0x0,
.condition.rule = 0x1,
.condition.nSkip = 0x0,
.config.bUseCw = 0x0,
.config.bFsOff = 0x1,
.config.whitenMode = 0x2,
.__dummy0 = 0x00,
.txWord = 0xABCD,
.__dummy1 = 0x00,
.endTrigger.triggerType = 0x1,
.endTrigger.bEnaCmd = 0x0,
.endTrigger.triggerNo = 0x0,
.endTrigger.pastTrig = 0x0,
.syncWord = 0xd391d391,
.endTime = 0x00000000,
};

Felix ZF：

你可以直接使用smartRF studio进行收发测试，确定硬件的收发性能。

Butterfly：

建议先撇开软件寄存器设置，先查硬件问题。

用SmartRF Studio控制发送，有条件的话，接频谱仪测射频信号，是信号强度不够还是频偏。

如果没条件，和另外一块TI EVM同样发送，另外一块板子做接收做对比，先排查硬件问题。

器件参数、PCB Layout、射频前端都有可能会影响发送信号质量，从你的简单描述来看，没办法确定问题，建议把软硬件分开来查。