wireless duplex transceiver
A transceiver and wireless technology, applied in the field of wireless duplex transceivers, can solve the problems of different index requirements, limit the performance of transformer-type RF front-end, etc., and achieve the effect of performance optimization
Active Publication Date: 2016-06-29
ZGMICRO HEFEI LTD
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Problems solved by technology
However, due to the different working methods of the transmitting circuit and the receiving circuit, the indicators of the transmitting circuit and the receiving circuit on the on-chip transformer will also be different, making it difficult for ordinary on-chip transformers to achieve the optimal performance of the transmitting front-end and receiving front-end at the same time, which greatly Limits the performance of transformer-based RF front-ends
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[0018] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. Unless otherwise specified, the words connected, connected, and joined in this document mean that they are electrically connected directly or indirectly. Words such as connection, connection, and series in this article can be understood as indirect or direct connection, connection, and series.
[0020] Please refer to figure...
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The present invention provides a wireless duplex transceiver including an on-chip transformer, receiver and transmitter. The on-chip transformer includes a primary coil and a secondary coil, the primary coil includes a first primary terminal, a second primary terminal, and a primary line connected between the first primary terminal and the second primary terminal; the secondary coil includes a first secondary terminal, The second secondary terminal and the secondary line connected between the first secondary terminal and the second secondary terminal, the secondary coil also includes a first secondary tap and a second secondary tap located on the secondary line, the second secondary tap One primary terminal is connected to the antenna, the second primary terminal is connected to the ground node, the first secondary terminal and the second secondary terminal are connected to the input of the receiver; the first secondary tap and the second secondary tap are connected to the transmitter's connected to the output. Compared with the prior art, the present invention can realize the respective optimization of the performance of the transmitting front end and the receiving front end without adding extra cost.
Description
【Technical field】 [0001] The invention relates to the technical field of wireless communication, in particular to a wireless duplex transceiver. 【Background technique】 [0002] A single-chip integrated circuit wireless transceiver usually integrates two front-ends of receiving and transmitting radio frequency lines, and realizes duplex work through an on-chip or off-chip switch (switch). In addition, radio frequency integrated circuits usually adopt a differential structure, while antennas are generally single-ended, and wireless systems usually use off-chip baluns (baluns, balanced-unbalanced transformers) to achieve differential / single-ended conversion. Whether it is an off-chip switch or balun, it will increase the complexity of system design and increase the cost. [0003] In the prior art, an on-chip transformer (transformer) can also be used to switch between the receiving front end and the transmitting front end, and at the same time play the role of converting the b...
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IPC IPC(8): H04B1/40
Inventor 马欣龙吴悦
Owner ZGMICRO HEFEI LTD