AGC (automatic gain control) and ALC (adaptive logic circuit) high-gain active circuit module with uplink and downlink synchronous control function
A technology of active circuit and control function, applied in the direction of electrical components, gain control, amplification control, etc., can solve the problems of large volume, complex circuit, low gain of AGC and ALC circuits, etc.
Active Publication Date: 2015-06-10
庄昆杰
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Problems solved by technology
[0004] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: the existing AGC and ALC circuits have low gain, large volume, poor intermodulation, large noise, large time delay, and small attenuation of uplink and downlink synchronization control. complex circuit
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Embodiment 1
[0056] In the first embodiment of the present invention, AGC and ALC high-gain active circuit components with uplink and downlink synchronization control functions are fabricated on a substrate with a high dielectric constant. The substrate has a dielectric constant of 10, a plate thickness of 0.64mm, and C1 copper The thickness is 1oz (35 microns). In addition, due to the high system gain, in order to achieve the uplink and downlink synchronous digital control function, it is necessary to increase the analog attenuation and increase the slope of the attenuation curve. Therefore, the matching PIN ESC attenuator used in the first embodiment is a 5-tube PIN ESC. Attenuator, structure like Figure 5 Shown.
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The invention discloses an AGC (automatic gain control) and ALC (adaptive logic circuit) high-gain active circuit module with an uplink and downlink synchronous control function. The AGC and ALC high-gain active circuit module comprises an AGC receiving module and an ALC transmitting module, wherein the AGC receiving module comprises a first balancing amplifier, a first electrically controlled attenuator, a first balancing amplifier module, a first coupler and a first direct-current processing circuit; and the ALC transmitting module comprises a second electrically controlled attenuator, a second balancing amplifier module, a power combiner, a second coupler and a second direct-current processing circuit. On the basis that the cost is not increased, a user can control uplink and downlink synchronous time by using external uplink and downlink time slot synchronous signals through the AGC and ALC high-gain active circuit module.
Description
Technical field [0001] The present invention relates to the technical field of mobile communication, in particular to an AGC and ALC high-gain active circuit assembly with uplink and downlink synchronization control functions. Background technique [0002] When the receiver is receiving a signal, the signal level at its input may vary within a wide range, and the output power of the receiver varies with the size of the external signal, so the output of the receiver will have a very different strength Signal power. If it is necessary to maintain the linear amplification of the receiving device within such a wide range and the signal is not saturated and distorted, the gain of the receiver needs to be controlled to keep the output signal at an appropriate level to ensure the normal operation of the receiver. And through the AGC (Automatic Gain Control, automatic gain control) circuit, the gain of the amplifying circuit can be adjusted automatically with the signal strength. The A...
Claims
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IPC IPC(8): H03G3/30
Inventor 庄昆杰
Owner 庄昆杰
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