Blocker performance in a radio receiver
First Claim
1. A method for configuring a multiple stage band pass filter of a Radio Frequency (RF) receiver comprising:
- setting a comer of a low pass mixer output filter that receives a down sampled analog information signal;
setting a comer of a low pass buffer output filter coupled to an output of the low pass mixer output filter via a buffer;
for each of a plurality of band pass filters coupled to an output of the low pass buffer output filter;
setting a zero of the band pass filter; and
setting a plurality of poles of the band pass filter; and
setting a combined gain of the combination of the low pass mixer output filter, the low pass buffer output filter, and the plurality of band pass filters.
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Accused Products
Abstract
Configuring a multiple stage band pass filter of a radio frequency receiver commences by setting a comer of a low pass mixer output filter that receives a down sampled analog information signal. Operation continues with setting a buffer output filter comer of a low pass buffer output filter coupled to an output of low pass mixer output filter via a buffer. Then, operation includes setting the poles and zero of a plurality of band pass filters coupled to the output of the low pass buffer output filter is performed. This operation includes first setting a zero of a respected band pass filter and then setting the plurality of poles of the band pass filter. Finally, operation concludes with setting a combined gain of the combination of the low pass mixer output filter, the low pass buffer output filter, and the plurality of band pass filters.
12 Citations
26 Claims
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1. A method for configuring a multiple stage band pass filter of a Radio Frequency (RF) receiver comprising:
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setting a comer of a low pass mixer output filter that receives a down sampled analog information signal;
setting a comer of a low pass buffer output filter coupled to an output of the low pass mixer output filter via a buffer;
for each of a plurality of band pass filters coupled to an output of the low pass buffer output filter;
setting a zero of the band pass filter; and
setting a plurality of poles of the band pass filter; and
setting a combined gain of the combination of the low pass mixer output filter, the low pass buffer output filter, and the plurality of band pass filters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for configuring a multiple stage band pass filter of a Radio Frequency (RF) receiver comprising:
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setting a comer of an I branch low pass mixer output filter that receives an I component of a down sampled analog information signal;
setting a comer of an Q branch low pass mixer output filter that receives a Q component of the down sampled analog information signal;
setting a comer of an I branch low pass buffer output filter comer coupled to an output of the I branch low pass mixer output filter via an I branch buffer;
setting a comer of a Q branch low pass buffer output filter comer coupled to an output of the Q branch low pass mixer output filter via a Q branch buffer;
for each of a plurality of I branch band pass filters coupled to an output of the I branch low pass buffer output filter;
setting a zero of an I branch of the band pass filter; and
setting a plurality of poles of the I branch of the band pass filter;
for each of a plurality of Q branch band pass filters coupled to an output of the Q branch low pass buffer output filter;
setting a zero of a Q branch of the band pass filter; and
setting a plurality of poles of the Q branch of the band pass filter;
setting a combined gain of the combination of the I branch low pass mixer output filter, the I branch low pass buffer output filter, and the plurality of I branch band pass filters; and
setting a combined gain of the combination of the Q branch low pass mixer output filter, the Q branch low pass buffer output filter, and the plurality of Q branch band pass filters. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 26)
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17. A multiple stage band pass filter of a Radio Frequency (RF) Integrated Circuit comprising:
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an I branch low pass mixer output filter operable to receive an I component of a down sampled analog information signal;
an I branch buffer communicatively coupled to an output of the I branch low pass mixer output filter;
an I branch low pass buffer output filter communicatively coupled to an output of the I branch buffer;
a plurality of I branch band pass filters communicatively coupled to an output of the I branch low pass buffer output filter;
wherein the I branch low pass mixer output filter, the I branch low pass buffer output filter, and the plurality of I branch band pass filters are operable to be tuned to meet out of channel and out of band blocking requirements;
wherein the I branch low pass mixer output filter, the I branch low pass buffer output filter, and the plurality of I branch band pass filters are operable to be tuned to meet an in-channel gain requirement;
a Q branch low pass mixer output filter operable to receive a Q component of the down sampled analog information signal;
a Q branch buffer communicatively coupled to an output of the Q branch low pass mixer output filter;
a Q branch low pass buffer output filter communicatively coupled to an output of the Q branch buffer;
a plurality of Q branch band pass filters communicatively coupled to an output of the Q branch low pass buffer output filter;
wherein the Q branch low pass mixer output filter, the Q branch low pass buffer output filter, and the plurality of Q branch band pass filters are operable to be tuned to meet the out of channel and the out of band blocking requirements; and
wherein the Q branch low pass mixer output filter, the Q branch low pass buffer output filter, and the plurality of Q branch band pass filters are operable to be tuned to meet the in-channel gain requirement. - View Dependent Claims (18, 19, 20, 21)
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22. A multiple stage band pass filter of a Radio Frequency (RF) Integrated Circuit comprising:
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a low pass mixer output filter operable to receive a down sampled analog information signal;
a buffer communicatively coupled to an output of the low pass mixer output filter;
a low pass buffer output filter communicatively coupled to an output of the buffer;
a plurality of band pass filters communicatively coupled to an output of the low pass buffer output filter;
wherein the low pass mixer output filter, the low pass buffer output filter, and the plurality of band pass filters are operable to be tuned to meet out of channel and out of band blocking requirements; and
wherein the low pass mixer output filter, the low pass buffer output filter, and the plurality band pass filters are operable to be tuned to meet in-channel gain requirements. - View Dependent Claims (23, 24, 25)
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Specification